[go: up one dir, main page]

WO2019004307A1 - Imaging device - Google Patents

Imaging device Download PDF

Info

Publication number
WO2019004307A1
WO2019004307A1 PCT/JP2018/024446 JP2018024446W WO2019004307A1 WO 2019004307 A1 WO2019004307 A1 WO 2019004307A1 JP 2018024446 W JP2018024446 W JP 2018024446W WO 2019004307 A1 WO2019004307 A1 WO 2019004307A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
image sensor
imaging device
mirror
imaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/024446
Other languages
French (fr)
Japanese (ja)
Inventor
陽一 落合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pixie Dust Technologies Inc
Original Assignee
Pixie Dust Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pixie Dust Technologies Inc filed Critical Pixie Dust Technologies Inc
Publication of WO2019004307A1 publication Critical patent/WO2019004307A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/14—Arrangements specially adapted for eye photography
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B19/00—Cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems

Definitions

  • the present invention relates to an imaging device.
  • a digital camera needs to make light incident on an image sensor through a lens.
  • the electronic camera disclosed in Japanese Patent Application Laid-Open No. 2008-245129 includes an imaging lens, a quick return mirror, a finder, a display, and an imaging device. Reflected light of the subject is incident on the image sensor through the lens and the mirror. The image sensor electronically captures an image of a subject by converting incident light into an electrical signal.
  • An object of the present invention is to eliminate the restriction of the field of view of the user when shooting a subject.
  • One aspect of the present invention is A transmissive mirror having a negative refractive index,
  • the transmission mirror forms an image of the subject at a first imaging point which is symmetrical with respect to the subject with the transmission mirror as a symmetry axis.
  • FIG. 1 is a schematic view of an imaging device of the present embodiment.
  • FIG. 2 is a diagram showing a configuration of an imaging device of FIG.
  • FIG. 3 is a schematic view of a transmission type two-surface corner reflector array mirror which is an example of the transmission type mirror of FIG. 2;
  • Explanatory drawing of the operation principle of the imaging device of FIG. Explanatory drawing of the operation principle of the imaging device of FIG.
  • FIG. 7 is a view showing the arrangement of an imaging apparatus according to a modification 1 of the embodiment.
  • Explanatory drawing of the operation principle of the imaging device of FIG. The schematic diagram of the imaging device of the modification 3 of this embodiment.
  • FIG. 1 is a schematic view of an imaging device according to the present embodiment.
  • the imaging apparatus 10 has a space SP1 (hereinafter referred to as “first space”) on the user U side with respect to the transmission mirror 11 and a space (hereinafter “second space”) opposite the user U with respect to the transmission mirror 11 Separation) and SP2.
  • first space a space
  • second space a space opposite the user U with respect to the transmission mirror 11 Separation
  • the user U is present in the first space SP1.
  • a physical object OBJ1 exists in the second space SP2.
  • FIG. 2 is a diagram showing the configuration of the imaging apparatus of FIG.
  • the imaging device 10 includes a housing 10 a, a transmission mirror 11, and an image sensor 12.
  • the housing 10 a accommodates the transmission mirror 11 and the image sensor 12.
  • the transmission mirror 11 has a first surface 11a, a second surface, and a second surface 11b.
  • the first surface 11a faces the image sensor 12 side (that is, the second space SP2).
  • the second surface 11b faces the opposite side of the first surface 11a (that is, the first space SP1).
  • the transmission mirror 11 is rotatably supported by the housing 10 a.
  • the transmission type mirror 11 accommodated in the housing 10a is rotated, the transmission type mirror 11 has an inclination angle ⁇ (0 ⁇ ⁇ 90 °) with respect to the optical axis of the image sensor 12 outside the housing 10a. Forming (that is, tilting with respect to the optical axis of the image sensor 12).
  • the transmission mirror 11 has a negative refractive index.
  • the transmissive mirror 11 includes, for example, the following.
  • Optical metamaterial mirror Transmission type dihedral corner reflector array mirror Transmission Type Dihedral Corner Reflector Array Mirror
  • the image sensor 12 is configured to capture an image formed at the first imaging point IP1 in the housing 10a.
  • the image sensor 12 includes, for example, the following. ⁇ CMOS (Complementary Metal Oxide Semiconductor) sensor ⁇ CCD (Charged Coupled Devices) sensor
  • the imaging position P1 is the position of the eye UE when the user U captures an image using the imaging device 10.
  • the photographing position P1 is located in the first space SP1.
  • the virtual line VL11 is an optical axis of the reflected light of the eye UE located at the imaging position P1.
  • the virtual line VL12 is a line passing through the intersection point 11c of the transmissive mirror 11 and the virtual line VL11 and orthogonal to the virtual line VL11.
  • the transmissive mirror 11 forms an inclination angle ⁇ with respect to the virtual line VL11.
  • the first imaging point IP1 is a position that is symmetrical with respect to the imaging position P1 with the transmission mirror 11 as an axis of symmetry.
  • the focal distance d between the first imaging point IP1 and the intersection 11c is equal to the focal distance d between the photographing position P1 and the intersection 11c.
  • FIG. 3 is a schematic view of a transmission type two-face corner reflector array mirror which is an example of the transmission type mirror of FIG.
  • FIG. 3A shows the appearance of a transmission type two-face corner reflector array mirror which is an example of the transmission type mirror 11.
  • the transmissive mirror 11 has a first layer 11e including a first surface 11a and a second layer 11f including a second surface 11b.
  • the first layer 11 e and the second layer 11 f are stacked in the Y direction.
  • the first surface 11 a faces in the direction opposite to the second surface 11 b in the stacking direction (Y direction) of the first layer 11 e and the second layer 11 f.
  • FIG. 3B is an enlarged view of region I of FIG. 3A.
  • the transmission mirror 11 has a plurality of first micro mirror sheets 11 ha and a plurality of second micro mirror sheets 11 hb.
  • the plurality of first micro mirror sheets 11 ha of the first layer 11 e are arranged along the X direction at a pitch p.
  • the reflective surface 11haa of each first micro mirror sheet 11ha faces the arrangement direction (X direction) of the first micro mirror sheet 11ha.
  • the light incident on the first layer 11 e travels while being reflected in the X direction.
  • the plurality of second micro mirror sheets 11 hb of the second layer 11 f are arranged along the Z direction at a pitch p.
  • the reflective surface 11hba of each second micro mirror sheet 11hb faces the arrangement direction (Z direction) of the second micro mirror sheet 11hb.
  • the light incident on the second layer 11 f travels while being reflected in the Z direction.
  • the reflected light ROP of the physical object OBJ1 present in the second space SP2 is incident on the eye UE of the user U.
  • the reflected light ROP is imaged at the retina of the eye UE.
  • an image of the physical object OBJ1 appears on the eye UE.
  • the transmission mirror 11 receives the reflected light OP11 of the eye UE on the second surface 11b.
  • the transmission mirror 11 refracts the light OP11 received by the second surface 11b according to the negative refractive index, and transmits the light from the first surface 11a.
  • the transmitted light OP12 of the transmission mirror 11 forms an image at a first imaging point IP1 in the housing 10a.
  • the first imaging point IP1 is located at a plane-symmetrical position of the eye UE with respect to the transmission mirror 11. That is, the transmissive mirror 11 functions as an element (that is, a plane-targeted imaging element) that forms an image of incident light at a plane-symmetrical position.
  • the aerial image IMG1 corresponding to the transmitted light OP12 is displayed at the first imaging point IP1.
  • the aerial image IMG1 is an image corresponding to the reflected light OP11 of the eye UE (that is, an image of the eye UE on which the image IMG1a of the physical object OBJ1 is reflected).
  • the light OP13 corresponding to the aerial image IMG1 is incident on the image sensor 12.
  • the image sensor 12 converts the light OP13 into an electrical signal, thereby an image corresponding to the light OP13 (that is, an image of the eye UE on which the image IMG1a of the physical object OBJ1 appears) Capture the image.
  • the imaging device 10 forms a virtual lens VLE invisible to the user U at the first imaging point IP1.
  • the user U can shoot the physical object OBJ1 seen by his own eye UE via the virtual lens VLE.
  • the imaging device 10 can capture an image of the physical object OBJ1 captured in the eye UE of the user U. That is, the user U can capture an object viewed with his own eye UE without passing through the finder or the display. In this way, it is possible to eliminate the restriction on the user's field of view when shooting a subject.
  • the imaging device 10 does not have an objective lens. Therefore, the imaging device 10 can be easily miniaturized.
  • the transmission mirror 11 reflects and transmits incident light in the orthogonal direction, and thus has an aperture ratio higher than, for example, a concave mirror.
  • the brightness of the image captured by the image sensor 12 can be increased as compared to the case where the concave mirror is used.
  • Modified Example 1 A first modification will be described. Modification 1 is an example of recording a light field.
  • the imaging device 10 of the modified example 1 differs from the imaging device 10 (FIG. 2) of the present embodiment in that a microlens array 14 is provided.
  • the microlens array 14 is disposed between the transmission mirror 11 and the image sensor 12.
  • the distance between the microlens array 14 and the intersection point 11c is the focal length d.
  • FIG. 7 is an explanatory diagram of an operation principle of the imaging device of FIG.
  • the transmission type mirror 11 of the modification refracts the light OP11 received by the second surface 11b according to the negative refractive index and transmits the light from the first surface 11a as in FIG. 4A.
  • the transmitted light OP12 of the transmission mirror 11 is incident on a plurality of microlenses 14a constituting the microlens array 14.
  • Each microlens 14 a corresponds to each coordinate on the image sensor 12.
  • Each microlens 14 a refracts the transmitted light OP 12 and images the refracted light OP 14 on the corresponding coordinates of the image sensor 12.
  • the image sensor 12 captures an image of the eye UE by combining pixels corresponding to the imaged refracted light OP14.
  • the image sensor 12 also records the light field of each pixel.
  • the objective is configured to image incident light at the focal point.
  • the objective lens is on the light path between the eye UE and the microlens array 14, the image captured by the image sensor 12 is an image optically converted by the objective lens. Therefore, the range of the light field that can be recorded by the image sensor 12 is limited by the objective lens.
  • the first modification there is no objective lens on the light path between the eye UE and the microlens array 14.
  • the image captured by the image sensor 12 is an image that has not been optically converted. Therefore, the range of the light field that can be recorded by the image sensor 12 is wider than in the case where the objective lens is present.
  • Modification 2 is an example in which the focus of the imaging device 10 is adjusted.
  • the image sensor 12 is movable along the optical axis of the image sensor 12 (that is, the virtual line VL12 in FIG. 2). When the image sensor 12 moves, the first imaging point IP1 moves away from the intersection point 11c or approaches the intersection point 11c.
  • the focal length d changes according to the movement of the image sensor 12. Thereby, the focus of the image to be captured can be adjusted.
  • Modified Example 3 A third modification will be described. Modification 3 is an example of capturing an image using the image of the image sensor 12 formed in the air.
  • FIG. 8 is a schematic view of an imaging device of Modification 3 of the present embodiment.
  • the imaging device 10 transmits the light OP 16, which is the external light NL reflected by the image sensor 12, to the first space SP ⁇ b> 1 through the transmission mirror 11.
  • the transmitted light OP17 of the transmission mirror 11 forms an image in the first space SP1.
  • the aerial image IMG2 of the image sensor 12 is displayed in the first space SP1.
  • the image sensor 12 captures an image of the object OBJ2.
  • the transmission mirror 11 receives the reflected light OP16 of the image sensor 12 on the first surface 11a.
  • the transmission mirror 11 refracts the reflected light OP16 received on the first surface 11a according to the negative refractive index, and transmits the light from the second surface 11b.
  • the transmitted light OP17 of the transmission mirror 11 forms an image at a second imaging point IP2 in the first space SP1.
  • the aerial image IMG2 corresponding to the transmitted light OP17 is displayed at the second imaging point IP2.
  • the aerial image IMG2 is a real image of the image sensor 12.
  • the object OBJ2 when the object OBJ2 is aligned with the aerial image IMG2 (that is, the object OBJ2 is disposed at the second imaging point IP2), according to the principle similar to the present embodiment (FIG. 4 and FIG. 5).
  • the light OP11 that the outside light NL reflects on the object OBJ2 is incident on the transmission mirror 11.
  • the transmitted light OP12 of the transmission mirror 11 is incident on the image sensor 12.
  • the image sensor 12 captures the image of the object OBJ2 by converting the incident transmitted light OP12 into an electrical signal.
  • the imaging device 10 When the imaging device 10 is incorporated into the fingerprint authentication device, the user can give an image of a fingerprint to the fingerprint authentication device by touching the aerial image IMG2 with a finger. In this case, fingerprint authentication can be realized without contacting the finger with the imaging device 10. As a result, it is possible to avoid the adhesion of dirt to any of the imaging device 10 and the finger. It is particularly preferable to incorporate the imaging device 10 into a fingerprint authentication apparatus used by a large number of users, since the hygiene of the fingerprint authentication apparatus can be maintained.
  • the patient can give an eye image to the fundus examination apparatus by aligning the eyes with the aerial image IMG2.
  • the fundus examination can be realized without irradiating the eye with intense light. This can reduce the burden on the patient.
  • the light source of the reflected light OP16 may be transmitted light OP12 (that is, light originating from the reflected light of the object OBJ2).
  • the light source of the reflected light OP16 may be light of a light source (for example, an LED (Light Emitting Diode)) provided in the housing 10a.
  • the image of the object OBJ2 can be acquired without bringing the imaging device 10 and the object OBJ2 into contact with each other.
  • imaging device 10a housing 11: transmission type mirror 11a: first surface 11b: second surface 11c: intersection point 11e: first layer 11f: second layer 11ha: first micro mirror sheet 11haa: reflective surface 11hb: first 2 micro mirror sheet 11hba: reflective surface 12: image sensor 14: microlens array 14a: microlens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Veterinary Medicine (AREA)
  • Studio Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Cameras In General (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Viewfinders (AREA)
  • Lenses (AREA)

Abstract

An imaging device comprising a transmissive mirror with a negative refractive index. The transmissive mirror forms the image of a subject at the first image formation point, which is symmetrical to the subject with the transmissive mirror as the axis of symmetry. The imaging device comprises an image sensor which captures the formed image.

Description

撮像装置Imaging device

　本発明は、撮像装置に関する。 The present invention relates to an imaging device.

　一般に、デジタルカメラは、レンズを介してイメージセンサに光を入射させる必要がある。
　例えば、特開２００８－２４５１２９号公報の電子カメラは、撮影レンズと、クイックリターンミラーと、ファインダと、ディスプレイと、撮像素子と、を備える。被写体の反射光は、レンズ及びミラーを経由して、イメージセンサに入射する。イメージセンサは、入射した光を電気信号に変換することにより、被写体の画像を電子的に撮像する。 In general, a digital camera needs to make light incident on an image sensor through a lens.
For example, the electronic camera disclosed in Japanese Patent Application Laid-Open No. 2008-245129 includes an imaging lens, a quick return mirror, a finder, a display, and an imaging device. Reflected light of the subject is incident on the image sensor through the lens and the mirror. The image sensor electronically captures an image of a subject by converting incident light into an electrical signal.

　しかし、特開２００８－２４５１２９号公報では、ユーザは、被写体を撮影するために、ファインダ又はディスプレイに映った被写体を見る必要がある。つまり、被写体を撮影する時のユーザの視界は、ファインダ又はディスプレイによって制限される。 However, in Japanese Patent Application Laid-Open No. 2008-245129, it is necessary for the user to look at the subject shown in the finder or display in order to shoot the subject. That is, the field of view of the user when shooting an object is limited by the finder or display.

　本発明の目的は、被写体を撮影する時のユーザの視界の制限を解消することである。 An object of the present invention is to eliminate the restriction of the field of view of the user when shooting a subject.

　本発明の一態様は、
　負の屈折率を有する透過型ミラーを備え、
　　前記透過型ミラーは、前記透過型ミラーを対称軸として被写体に対して対称となる第１結像点に前記被写体の像を形成し、
　前記形成された像を撮像するイメージセンサを備える、
撮像装置である。 One aspect of the present invention is
A transmissive mirror having a negative refractive index,
The transmission mirror forms an image of the subject at a first imaging point which is symmetrical with respect to the subject with the transmission mirror as a symmetry axis.
An image sensor for capturing the formed image;
It is an imaging device.

　本発明によれば、被写体を撮影する時のユーザの視界の制限を解消することができる。 According to the present invention, it is possible to eliminate the restriction on the field of view of the user when shooting a subject.

本実施形態の撮像装置の模式図。FIG. 1 is a schematic view of an imaging device of the present embodiment. 図１の撮像装置の構成を示す図。FIG. 2 is a diagram showing a configuration of an imaging device of FIG. 図２の透過型ミラーの一例である透過型二面コーナーリフレクタアレイミラーの模式図。FIG. 3 is a schematic view of a transmission type two-surface corner reflector array mirror which is an example of the transmission type mirror of FIG. 2; 図２の撮像装置の動作原理の説明図。Explanatory drawing of the operation principle of the imaging device of FIG. 図２の撮像装置の動作原理の説明図。Explanatory drawing of the operation principle of the imaging device of FIG. 本実施形態の変形例１の撮像装置の構成を示す図。FIG. 7 is a view showing the arrangement of an imaging apparatus according to a modification 1 of the embodiment. 図６の撮像装置の動作原理の説明図。Explanatory drawing of the operation principle of the imaging device of FIG. 本実施形態の変形例３の撮像装置の模式図。The schematic diagram of the imaging device of the modification 3 of this embodiment. 図８の撮像装置の動作原理の説明図。Explanatory drawing of the operation principle of the imaging device of FIG.

　以下、本発明の一実施形態について、図面に基づいて詳細に説明する。なお、実施形態を説明するための図面において、同一の構成要素には原則として同一の符号を付し、その繰り返しの説明は省略する。 Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. Note that, in the drawings for describing the embodiments, the same components are denoted by the same reference symbols in principle, and the repetitive description thereof will be omitted.

（１）撮像装置の概要
　本実施形態の撮像装置の概要について説明する。図１は、本実施形態の撮像装置の模式図である。 (1) Overview of Imaging Device An overview of the imaging device of the present embodiment will be described. FIG. 1 is a schematic view of an imaging device according to the present embodiment.

　図１の撮像装置１０は、透過型ミラー１１を備える。 The imaging device 10 of FIG. 1 includes a transmissive mirror 11.

　撮像装置１０は、透過型ミラー１１に対してユーザＵ側の空間（以下「第１空間」という）ＳＰ１と、透過型ミラー１１に対してユーザＵと反対側の空間（以下「第２空間」という）ＳＰ２と、を分離する。
　第１空間ＳＰ１にはユーザＵが存在する。
　第２空間ＳＰ２には、物理オブジェクトＯＢＪ１が存在する。 The imaging apparatus 10 has a space SP1 (hereinafter referred to as “first space”) on the user U side with respect to the transmission mirror 11 and a space (hereinafter “second space”) opposite the user U with respect to the transmission mirror 11 Separation) and SP2.
The user U is present in the first space SP1.
A physical object OBJ1 exists in the second space SP2.

　撮像装置１０は、第２空間ＳＰ２に配置された物理オブジェクトＯＢＪ１の反射光ＲＯＰを第２空間ＳＰ２から第１空間ＳＰ１に透過させることにより、ユーザＵの目ＵＥの網膜に結像する。これにより、物理オブジェクトＯＢＪ１の像が網膜に形成される。
　撮像装置１０は、透過型ミラー１１を介して、目ＵＥの反射光ＯＰを撮像装置１０内に結像することにより、目ＵＥの像ＩＭＧ１を形成する。像ＩＭＧ１は、ユーザＵの網膜に形成された像（つまり、物理オブジェクトＯＢＪ１の像）を含む。
　撮像装置１０は、ユーザＵが目ＵＥで見た物理オブジェクトＯＢＪ１を含む像ＩＭＧ１を撮像する。つまり、撮像装置１０は、目ＵＥと、ユーザが見た物理オブジェクトＯＢＪ１と、が被写体である画像を撮像することができる。 The imaging device 10 forms an image on the retina of the eye UE of the user U by transmitting the reflected light ROP of the physical object OBJ1 disposed in the second space SP2 from the second space SP2 to the first space SP1. Thereby, an image of the physical object OBJ1 is formed on the retina.
The imaging device 10 forms an image IMG1 of the eye UE by imaging the reflected light OP of the eye UE in the imaging device 10 through the transmission mirror 11. The image IMG1 includes an image formed on the retina of the user U (that is, an image of the physical object OBJ1).
The imaging device 10 captures an image IMG1 including the physical object OBJ1 seen by the user U with the eye UE. That is, the imaging device 10 can capture an image in which the eye UE and the physical object OBJ1 seen by the user are subjects.

（２）撮像装置の構成
　本実施形態の撮像装置の構成について説明する。図２は、図１の撮像装置の構成を示す図である。 (2) Configuration of Imaging Device The configuration of the imaging device of the present embodiment will be described. FIG. 2 is a diagram showing the configuration of the imaging apparatus of FIG.

　図２に示すように、撮像装置１０は、筐体１０ａと、透過型ミラー１１と、イメージセンサ１２と、を備える。 As shown in FIG. 2, the imaging device 10 includes a housing 10 a, a transmission mirror 11, and an image sensor 12.

　筐体１０ａは、透過型ミラー１１と、イメージセンサ１２と、を収容する。 The housing 10 a accommodates the transmission mirror 11 and the image sensor 12.

　透過型ミラー１１は、第１面１１ａと、第２面と１１ｂと、を有する。
　第１面１１ａは、イメージセンサ１２側（つまり、第２空間ＳＰ２）を向いている。
　第２面１１ｂは、第１面１１ａの反対側（つまり、第１空間ＳＰ１）を向いている。 The transmission mirror 11 has a first surface 11a, a second surface, and a second surface 11b.
The first surface 11a faces the image sensor 12 side (that is, the second space SP2).
The second surface 11b faces the opposite side of the first surface 11a (that is, the first space SP1).

　透過型ミラー１１は、筐体１０ａに回動可能に軸支されている。筐体１０ａに収容された透過型ミラー１１が回動すると、透過型ミラー１１は、筐体１０ａの外部において、イメージセンサ１２の光軸に対して傾斜角θ（０＜θ≦９０°）を形成する（つまり、イメ
ージセンサ１２の光軸に対して傾斜する）。
　透過型ミラー１１は、負の屈折率を有する。 The transmission mirror 11 is rotatably supported by the housing 10 a. When the transmission type mirror 11 accommodated in the housing 10a is rotated, the transmission type mirror 11 has an inclination angle θ (0 <θ ≦ 90 °) with respect to the optical axis of the image sensor 12 outside the housing 10a. Forming (that is, tilting with respect to the optical axis of the image sensor 12).
The transmission mirror 11 has a negative refractive index.

　透過型ミラー１１は、例えば、以下のものを含む。
・オプティカルメタマテリアルミラー
・透過型二面コーナーリフレクタアレイミラー（Transmission Type Dihedral Corner Reflector Array Mirror） The transmissive mirror 11 includes, for example, the following.
Optical metamaterial mirror Transmission type dihedral corner reflector array mirror (Transmission Type Dihedral Corner Reflector Array Mirror)

　イメージセンサ１２は、筐体１０ａ内の第１結像点ＩＰ１に形成された画像を撮像するように構成される。イメージセンサ１２は、例えば、以下のものを含む。
・ＣＭＯＳ（Complementary Metal Oxide Semiconductor）センサ
・ＣＣＤ（Charged Coupled Devices）センサ The image sensor 12 is configured to capture an image formed at the first imaging point IP1 in the housing 10a. The image sensor 12 includes, for example, the following.
・ CMOS (Complementary Metal Oxide Semiconductor) sensor ・ CCD (Charged Coupled Devices) sensor

　撮影ポジションＰ１は、ユーザＵが撮像装置１０を用いて撮影する時の目ＵＥの位置である。撮影ポジションＰ１は、第１空間ＳＰ１に位置する。
　仮想線ＶＬ１１は、撮影ポジションＰ１に位置する目ＵＥの反射光の光軸である。
　仮想線ＶＬ１２は、透過型ミラー１１と仮想線ＶＬ１１との交点１１ｃを通り、且つ、仮想線ＶＬ１１に直交する線である。 The imaging position P1 is the position of the eye UE when the user U captures an image using the imaging device 10. The photographing position P1 is located in the first space SP1.
The virtual line VL11 is an optical axis of the reflected light of the eye UE located at the imaging position P1.
The virtual line VL12 is a line passing through the intersection point 11c of the transmissive mirror 11 and the virtual line VL11 and orthogonal to the virtual line VL11.

　透過型ミラー１１は、仮想線ＶＬ１１に対して傾斜角θを形成する。
　第１結像点ＩＰ１は、透過型ミラー１１を対称軸として撮影ポジションＰ１に対して対称となる位置である。第１結像点ＩＰ１と交点１１ｃとの焦点距離ｄは、撮影ポジションＰ１と交点１１ｃとの焦点距離ｄと等しい。
　透過型ミラー１１を回動させると、傾斜角θが変化する。傾斜角θが変化すると、第１結像点ＩＰ１の位置が変わる。 The transmissive mirror 11 forms an inclination angle θ with respect to the virtual line VL11.
The first imaging point IP1 is a position that is symmetrical with respect to the imaging position P1 with the transmission mirror 11 as an axis of symmetry. The focal distance d between the first imaging point IP1 and the intersection 11c is equal to the focal distance d between the photographing position P1 and the intersection 11c.
When the transmissive mirror 11 is rotated, the tilt angle θ changes. When the inclination angle θ changes, the position of the first imaging point IP1 changes.

（２－１）透過型ミラーの構成
　本実施形態の透過型ミラーの構成を説明する。図３は、図２の透過型ミラーの一例である透過型二面コーナーリフレクタアレイミラーの模式図である。 (2-1) Configuration of Transmission Type Mirror The configuration of the transmission type mirror of the present embodiment will be described. FIG. 3 is a schematic view of a transmission type two-face corner reflector array mirror which is an example of the transmission type mirror of FIG.

　図３Ａは、透過型ミラー１１の一例である透過型二面コーナーリフレクタアレイミラーの外観を示している。
　図３Ａに示すように、透過型ミラー１１は、第１面１１ａを含む第１層１１ｅと、第２面１１ｂを含む第２層１１ｆと、を有する。第１層１１ｅ及び第２層１１ｆは、Ｙ方向に積層されている。第１面１１ａは、第１層１１ｅ及び第２層１１ｆの積層方向（Ｙ方向）について、第２面１１ｂと反対方向を向く。 FIG. 3A shows the appearance of a transmission type two-face corner reflector array mirror which is an example of the transmission type mirror 11.
As shown in FIG. 3A, the transmissive mirror 11 has a first layer 11e including a first surface 11a and a second layer 11f including a second surface 11b. The first layer 11 e and the second layer 11 f are stacked in the Y direction. The first surface 11 a faces in the direction opposite to the second surface 11 b in the stacking direction (Y direction) of the first layer 11 e and the second layer 11 f.

　図３Ｂは、図３Ａの領域Ｉの拡大図である。
　図３Ｂに示すように、透過型ミラー１１は、複数の第１マイクロミラーシート１１ｈａと、複数の第２マイクロミラーシート１１ｈｂと、を有する。 FIG. 3B is an enlarged view of region I of FIG. 3A.
As shown in FIG. 3B, the transmission mirror 11 has a plurality of first micro mirror sheets 11 ha and a plurality of second micro mirror sheets 11 hb.

　第１層１１ｅの複数の第１マイクロミラーシート１１ｈａは、ピッチｐでＸ方向に沿って配列されている。各第１マイクロミラーシート１１ｈａの反射面１１ｈａａは、第１マイクロミラーシート１１ｈａの配列方向（Ｘ方向）を向く。
　第１層１１ｅに入射した光は、Ｘ方向に反射しながら進む。 The plurality of first micro mirror sheets 11 ha of the first layer 11 e are arranged along the X direction at a pitch p. The reflective surface 11haa of each first micro mirror sheet 11ha faces the arrangement direction (X direction) of the first micro mirror sheet 11ha.
The light incident on the first layer 11 e travels while being reflected in the X direction.

　第２層１１ｆの複数の第２マイクロミラーシート１１ｈｂは、ピッチｐでＺ方向に沿って配列されている。各第２マイクロミラーシート１１ｈｂの反射面１１ｈｂａは、第２マイクロミラーシート１１ｈｂの配列方向（Ｚ方向）を向く。
　第２層１１ｆに入射した光は、Ｚ方向に反射しながら進む。 The plurality of second micro mirror sheets 11 hb of the second layer 11 f are arranged along the Z direction at a pitch p. The reflective surface 11hba of each second micro mirror sheet 11hb faces the arrangement direction (Z direction) of the second micro mirror sheet 11hb.
The light incident on the second layer 11 f travels while being reflected in the Z direction.

（３）撮像装置の動作原理
　本実施形態の撮像装置の動作原理を説明する。図４及び図５は、図２の撮像装置の動作原理の説明図である。 (3) Operation Principle of Imaging Device The operation principle of the imaging device of the present embodiment will be described. 4 and 5 are explanatory diagrams of the operation principle of the imaging device of FIG.

　図４Ａに示すように、ユーザＵの目ＵＥには、第２空間ＳＰ２に存在する物理オブジェクトＯＢＪ１の反射光ＲＯＰが入射する。反射光ＲＯＰは、目ＵＥの網膜で結像する。これにより、目ＵＥには、物理オブジェクトＯＢＪ１の像が映る。 As shown in FIG. 4A, the reflected light ROP of the physical object OBJ1 present in the second space SP2 is incident on the eye UE of the user U. The reflected light ROP is imaged at the retina of the eye UE. As a result, an image of the physical object OBJ1 appears on the eye UE.

　透過型ミラー１１は、目ＵＥの反射光ＯＰ１１を第２面１１ｂで受ける。
　透過型ミラー１１は、第２面１１ｂで受けた光ＯＰ１１を、負の屈折率に応じて屈折させて、第１面１１ａから透過させる。 The transmission mirror 11 receives the reflected light OP11 of the eye UE on the second surface 11b.
The transmission mirror 11 refracts the light OP11 received by the second surface 11b according to the negative refractive index, and transmits the light from the first surface 11a.

　透過型ミラー１１の透過光ＯＰ１２は、筐体１０ａ内の第１結像点ＩＰ１で結像する。第１結像点ＩＰ１は、透過型ミラー１１を基準として、目ＵＥの面対称の位置に位置する。つまり、透過型ミラー１１は、入射した光の像を面対称の位置に結像する素子（つまり、面対象結像素子）として機能する。
　これにより、第１結像点ＩＰ１に、透過光ＯＰ１２に対応する空中画像ＩＭＧ１が表示される。空中画像ＩＭＧ１は、目ＵＥの反射光ＯＰ１１に対応する像（つまり、物理オブジェクトＯＢＪ１の像IＭＧ１ａが映る目ＵＥの像）である。 The transmitted light OP12 of the transmission mirror 11 forms an image at a first imaging point IP1 in the housing 10a. The first imaging point IP1 is located at a plane-symmetrical position of the eye UE with respect to the transmission mirror 11. That is, the transmissive mirror 11 functions as an element (that is, a plane-targeted imaging element) that forms an image of incident light at a plane-symmetrical position.
Thus, the aerial image IMG1 corresponding to the transmitted light OP12 is displayed at the first imaging point IP1. The aerial image IMG1 is an image corresponding to the reflected light OP11 of the eye UE (that is, an image of the eye UE on which the image IMG1a of the physical object OBJ1 is reflected).

　空中画像ＩＭＧ１に対応する光ＯＰ１３は、イメージセンサ１２に入射する。ユーザがシャッタボタン（不図示）を操作すると、イメージセンサ１２は、光ＯＰ１３を電気信号に変換することにより、光ＯＰ１３に対応する画像（つまり、物理オブジェクトＯＢＪ１の像ＩＭＧ１ａが映る目ＵＥの画像）を撮像する。 The light OP13 corresponding to the aerial image IMG1 is incident on the image sensor 12. When the user operates the shutter button (not shown), the image sensor 12 converts the light OP13 into an electrical signal, thereby an image corresponding to the light OP13 (that is, an image of the eye UE on which the image IMG1a of the physical object OBJ1 appears) Capture the image.

　換言すると、図５に示すように、撮像装置１０は、第１結像点ＩＰ１に、ユーザＵには見えないバーチャルレンズＶＬＥを形成する。ユーザＵは、バーチャルレンズＶＬＥを介して、自身の目ＵＥで見た物理オブジェクトＯＢＪ１を撮影することができる。 In other words, as shown in FIG. 5, the imaging device 10 forms a virtual lens VLE invisible to the user U at the first imaging point IP1. The user U can shoot the physical object OBJ1 seen by his own eye UE via the virtual lens VLE.

（４）小括
　本実施形態について小括する。 (4) Summary This embodiment will be summarized.

　本実施形態によれば、撮像装置１０は、ユーザＵの目ＵＥに映った物理オブジェクトＯＢＪ１の画像を撮像することができる。つまり、ユーザＵは、ファインダ又はディスプレイを介さずに、自身の目ＵＥで見た被写体を撮影することができる。これにより、被写体を撮影する時のユーザの視界の制限を解消することができる。 According to the present embodiment, the imaging device 10 can capture an image of the physical object OBJ1 captured in the eye UE of the user U. That is, the user U can capture an object viewed with his own eye UE without passing through the finder or the display. In this way, it is possible to eliminate the restriction on the user's field of view when shooting a subject.

　本実施形態によれば、撮像装置１０には、対物レンズがない。従って、撮像装置１０を容易に小型化することができる。 According to the present embodiment, the imaging device 10 does not have an objective lens. Therefore, the imaging device 10 can be easily miniaturized.

　本実施形態によれば、透過型ミラー１１は、入射光を直交方向に反射させて透過させるので、例えば凹面ミラーより高い開口率を有する。これにより、凹面ミラーを用いた場合に比べて、イメージセンサ１２により撮像される画像の輝度を上げることができる。 According to the present embodiment, the transmission mirror 11 reflects and transmits incident light in the orthogonal direction, and thus has an aperture ratio higher than, for example, a concave mirror. Thereby, the brightness of the image captured by the image sensor 12 can be increased as compared to the case where the concave mirror is used.

（５）変形例
　本実施形態の変形例について説明する。 (5) Modified Example A modified example of the present embodiment will be described.

（５－１）変形例１
　変形例１について説明する。変形例１は、ライトフィールドを記録する例である。 (5-1) Modified Example 1
A first modification will be described. Modification 1 is an example of recording a light field.

（５―１－１）撮像装置の構成
　変形例１の撮像装置の構成について説明する。図６は、本実施形態の変形例１の撮像装置の構成を示す図である。 (5-1-1) Configuration of Imaging Device The configuration of the imaging device of the first modification will be described. FIG. 6 is a diagram showing a configuration of an imaging device of Modification Example 1 of the present embodiment.

　図６に示すように、変形例１の撮像装置１０は、マイクロレンズアレイ１４を備える点において、本実施形態の撮像装置１０（図２）と異なる。 As shown in FIG. 6, the imaging device 10 of the modified example 1 differs from the imaging device 10 (FIG. 2) of the present embodiment in that a microlens array 14 is provided.

　マイクロレンズアレイ１４は、透過型ミラー１１とイメージセンサ１２との間に配置される。
　マイクロレンズアレイ１４と交点１１ｃとの距離は、焦点距離ｄである。 The microlens array 14 is disposed between the transmission mirror 11 and the image sensor 12.
The distance between the microlens array 14 and the intersection point 11c is the focal length d.

（５－１－２）撮像装置の動作原理
　変形例１の撮像装置の動作原理について説明する。図７は、図６の撮像装置の動作原理の説明図である。 (5-1-2) Operation Principle of Imaging Device The operation principle of the imaging device of the first modification will be described. FIG. 7 is an explanatory diagram of an operation principle of the imaging device of FIG.

　図７Ａに示すように、変形例の透過型ミラー１１は、図４Ａと同様に、第２面１１ｂで受けた光ＯＰ１１を、負の屈折率に応じて屈折させて、第１面１１ａから透過させる。 As shown in FIG. 7A, the transmission type mirror 11 of the modification refracts the light OP11 received by the second surface 11b according to the negative refractive index and transmits the light from the first surface 11a as in FIG. 4A. Let

　透過型ミラー１１の透過光ＯＰ１２は、マイクロレンズアレイ１４を構成する複数のマイクロレンズ１４ａに入射する。
　各マイクロレンズ１４ａは、イメージセンサ１２上の各座標に対応している。各マイクロレンズ１４ａは、透過光ＯＰ１２を屈折させ、且つ、イメージセンサ１２の対応する座標上に屈折光ＯＰ１４を結像する。 The transmitted light OP12 of the transmission mirror 11 is incident on a plurality of microlenses 14a constituting the microlens array 14.
Each microlens 14 a corresponds to each coordinate on the image sensor 12. Each microlens 14 a refracts the transmitted light OP 12 and images the refracted light OP 14 on the corresponding coordinates of the image sensor 12.

　イメージセンサ１２は、結像した屈折光ＯＰ１４に対応する画素を合成することにより、目ＵＥの像を撮像する。また、イメージセンサ１２は、各画素のライトフィールドを記録する。 The image sensor 12 captures an image of the eye UE by combining pixels corresponding to the imaged refracted light OP14. The image sensor 12 also records the light field of each pixel.

　一般に、対物レンズは、入射光を焦点に結像するように構成される。目ＵＥとマイクロレンズアレイ１４との間の光路上に対物レンズがある場合、イメージセンサ１２が撮像する画像は、対物レンズによって光学的に変換された像である。従って、イメージセンサ１２が記録可能なライトフィールドの範囲は、対物レンズにより制限される。 In general, the objective is configured to image incident light at the focal point. When the objective lens is on the light path between the eye UE and the microlens array 14, the image captured by the image sensor 12 is an image optically converted by the objective lens. Therefore, the range of the light field that can be recorded by the image sensor 12 is limited by the objective lens.

　これに対して、変形例１によれば、目ＵＥとマイクロレンズアレイ１４との間の光路上に対物レンズがない。イメージセンサ１２が撮像する画像は、光学的に変換されていない像である。従って、イメージセンサ１２が記録可能なライトフィールドの範囲は、対物レンズがある場合より拡がる。 On the other hand, according to the first modification, there is no objective lens on the light path between the eye UE and the microlens array 14. The image captured by the image sensor 12 is an image that has not been optically converted. Therefore, the range of the light field that can be recorded by the image sensor 12 is wider than in the case where the objective lens is present.

（５－２）変形例２
　変形例２について説明する。変形例２は、撮像装置１０のピントを調整する例である。 (5-2) Modification 2
A second modification will be described. Modification 2 is an example in which the focus of the imaging device 10 is adjusted.

　イメージセンサ１２は、イメージセンサ１２の光軸（つまり、図２の仮想線ＶＬ１２）に沿って移動可能である。
　イメージセンサ１２が移動すると、第１結像点ＩＰ１は、交点１１ｃから離間する、又は、交点１１ｃに近づく。 The image sensor 12 is movable along the optical axis of the image sensor 12 (that is, the virtual line VL12 in FIG. 2).
When the image sensor 12 moves, the first imaging point IP1 moves away from the intersection point 11c or approaches the intersection point 11c.

　変形例２によれば、イメージセンサ１２の移動に応じて焦点距離ｄが変化する。これにより、撮像すべき画像のピントを調整することができる。 According to the second modification, the focal length d changes according to the movement of the image sensor 12. Thereby, the focus of the image to be captured can be adjusted.

（５－３）変形例３
　変形例３について説明する。変形例３は、空中に結像したイメージセンサ１２の像を用いて画像を撮像する例である。 (5-3) Modified Example 3
A third modification will be described. Modification 3 is an example of capturing an image using the image of the image sensor 12 formed in the air.

（５－３－１）撮像装置の概要
　変形例３の撮像装置１０の概要について説明する。図８は、本実施形態の変形例３の撮像装置の模式図である。 (5-3-1) Outline of Imaging Device An outline of the imaging device 10 according to the third modification will be described. FIG. 8 is a schematic view of an imaging device of Modification 3 of the present embodiment.

　図８に示すように、撮像装置１０は、外光ＮＬがイメージセンサ１２で反射した光ＯＰ１６を、透過型ミラー１１を介して、第１空間ＳＰ１に透過させる。透過型ミラー１１の透過光ＯＰ１７は、第１空間ＳＰ１で結像する。これにより、第１空間ＳＰ１に、イメージセンサ１２の空中画像ＩＭＧ２が表示される。 As shown in FIG. 8, the imaging device 10 transmits the light OP 16, which is the external light NL reflected by the image sensor 12, to the first space SP <b> 1 through the transmission mirror 11. The transmitted light OP17 of the transmission mirror 11 forms an image in the first space SP1. Thus, the aerial image IMG2 of the image sensor 12 is displayed in the first space SP1.

　ユーザが、空中画像ＩＭＧ２に被写体ＯＢＪ２を位置合わせして、シャッタボタン（不図示）を操作すると、イメージセンサ１２は、被写体ＯＢＪ２の画像を撮像する。 When the user aligns the object OBJ2 with the aerial image IMG2 and operates the shutter button (not shown), the image sensor 12 captures an image of the object OBJ2.

（５－３－２）撮像装置の動作原理
　変形例３の撮像装置の動作原理を説明する。図９は、図８の撮像装置の動作原理の説明図である。 (5-3-2) Operation Principle of Imaging Device The operation principle of the imaging device of the modification 3 will be described. FIG. 9 is an explanatory diagram of an operation principle of the imaging device of FIG.

　図９Ａに示すように、外光ＮＬは、筐体１０ａ内に入射して、イメージセンサ１２で反射する。 As shown in FIG. 9A, the external light NL enters into the housing 10 a and is reflected by the image sensor 12.

　透過型ミラー１１は、イメージセンサ１２の反射光ＯＰ１６を第１面１１ａで受ける。
　透過型ミラー１１は、第１面１１ａで受けた反射光ＯＰ１６を、負の屈折率に応じて屈折させて、第２面１１ｂから透過させる。 The transmission mirror 11 receives the reflected light OP16 of the image sensor 12 on the first surface 11a.
The transmission mirror 11 refracts the reflected light OP16 received on the first surface 11a according to the negative refractive index, and transmits the light from the second surface 11b.

　透過型ミラー１１の透過光ＯＰ１７は、第１空間ＳＰ１内の第２結像点ＩＰ２で結像する。
　これにより、第２結像点ＩＰ２に、透過光ＯＰ１７に対応する空中画像ＩＭＧ２が表示される。空中画像ＩＭＧ２は、イメージセンサ１２の実像である。 The transmitted light OP17 of the transmission mirror 11 forms an image at a second imaging point IP2 in the first space SP1.
Thus, the aerial image IMG2 corresponding to the transmitted light OP17 is displayed at the second imaging point IP2. The aerial image IMG2 is a real image of the image sensor 12.

　図９Ｂに示すように、空中画像ＩＭＧ２に被写体ＯＢＪ２を位置合わせする（つまり、被写体ＯＢＪ２を第２結像点ＩＰ２に配置する）と、本実施形態（図４及び図５）と同様の原理により、外光ＮＬが被写体ＯＢＪ２で反射した光ＯＰ１１は透過型ミラー１１に入射する。透過型ミラー１１の透過光ＯＰ１２は、イメージセンサ１２に入射する。 As shown in FIG. 9B, when the object OBJ2 is aligned with the aerial image IMG2 (that is, the object OBJ2 is disposed at the second imaging point IP2), according to the principle similar to the present embodiment (FIG. 4 and FIG. 5). The light OP11 that the outside light NL reflects on the object OBJ2 is incident on the transmission mirror 11. The transmitted light OP12 of the transmission mirror 11 is incident on the image sensor 12.

　ユーザがシャッタボタン（不図示）を操作すると、イメージセンサ１２は、入射した透過光ＯＰ１２を電気信号に変換することにより、被写体ＯＢＪ２の画像を撮像する。 When the user operates the shutter button (not shown), the image sensor 12 captures the image of the object OBJ2 by converting the incident transmitted light OP12 into an electrical signal.

　撮像装置１０が指紋認証装置に組み込まれる場合、ユーザは、指で空中画像ＩＭＧ２に触れることにより、指紋の画像を指紋認証装置に与えることができる。この場合、指と撮像装置１０とを接触させることなく、指紋認証を実現することができる。これにより、撮像装置１０及び指の何れにも汚れの付着を避けることができる。
　多数のユーザが利用する指紋認証装置に撮像装置１０を組み込むと、指紋認証装置の衛生を保つことができるので、特に好ましい。 When the imaging device 10 is incorporated into the fingerprint authentication device, the user can give an image of a fingerprint to the fingerprint authentication device by touching the aerial image IMG2 with a finger. In this case, fingerprint authentication can be realized without contacting the finger with the imaging device 10. As a result, it is possible to avoid the adhesion of dirt to any of the imaging device 10 and the finger.
It is particularly preferable to incorporate the imaging device 10 into a fingerprint authentication apparatus used by a large number of users, since the hygiene of the fingerprint authentication apparatus can be maintained.

　撮像装置１０が眼底検査装置に組み込まれる場合、患者は、空中画像ＩＭＧ２に目を位置合わせすることにより、目の画像を眼底検査装置に与えることができる。この場合、目に強い光を照射することなく、眼底検査を実現することができる。これにより、患者の負担を軽減することができる。 When the imaging device 10 is incorporated into the fundus examination apparatus, the patient can give an eye image to the fundus examination apparatus by aligning the eyes with the aerial image IMG2. In this case, the fundus examination can be realized without irradiating the eye with intense light. This can reduce the burden on the patient.

　反射光ＯＰ１６の光源は、透過光ＯＰ１２（つまり、被写体ＯＢＪ２の反射光を起源とする光）であってもよい。
　反射光ＯＰ１６の光源は、筐体１０ａ内に設けられた光源（例えば、ＬＥＤ（Light Emitting Diode））の光であってもよい。 The light source of the reflected light OP16 may be transmitted light OP12 (that is, light originating from the reflected light of the object OBJ2).
The light source of the reflected light OP16 may be light of a light source (for example, an LED (Light Emitting Diode)) provided in the housing 10a.

　変形例３によれば、撮像装置１０と被写体ＯＢＪ２とを接触させることなく、被写体ＯＢＪ２の画像を取得することができる。 According to the third modification, the image of the object OBJ2 can be acquired without bringing the imaging device 10 and the object OBJ2 into contact with each other.

　以上、本発明の実施形態について詳細に説明したが、本発明の範囲は上記の実施形態に限定されない。また、上記の実施形態は、本発明の主旨を逸脱しない範囲において、種々の改良や変更が可能である。また、上記の実施形態及び変形例は、組合せ可能である。 As mentioned above, although the embodiment of the present invention was described in detail, the scope of the present invention is not limited to the above-mentioned embodiment. Further, various modifications and changes can be made to the embodiment described above without departing from the spirit of the present invention. In addition, the above embodiments and modifications can be combined.

１０　　　　：撮像装置
１０ａ　　　：筐体
１１　　　　：透過型ミラー
１１ａ　　　：第１面
１１ｂ　　　：第２面
１１ｃ　　　：交点
１１ｅ　　　：第１層
１１ｆ　　　：第２層
１１ｈａ　　：第１マイクロミラーシート
１１ｈａａ　：反射面
１１ｈｂ　　：第２マイクロミラーシート
１１ｈｂａ　：反射面
１２　　　　：イメージセンサ
１４　　　　：マイクロレンズアレイ
１４ａ　　　：マイクロレンズ 10: imaging device 10a: housing 11: transmission type mirror 11a: first surface 11b: second surface 11c: intersection point 11e: first layer 11f: second layer 11ha: first micro mirror sheet 11haa: reflective surface 11hb: first 2 micro mirror sheet 11hba: reflective surface 12: image sensor 14: microlens array 14a: microlens

Claims (11)

　負の屈折率を有する透過型ミラーを備え、
　　前記透過型ミラーは、前記透過型ミラーを対称軸として被写体に対して対称となる第１結像点に前記被写体の像を形成し、
　前記形成された像を撮像するイメージセンサを備える、
撮像装置。 A transmissive mirror having a negative refractive index,
The transmission mirror forms an image of the subject at a first imaging point which is symmetrical with respect to the subject with the transmission mirror as a symmetry axis.
An image sensor for capturing the formed image;
Imaging device. 　負の屈折率を有する透過型ミラーを備え、
　　前記透過型ミラーは、前記透過型ミラーを対称軸として被写体に対して対称となる第１結像点にバーチャルレンズを形成し、
　前記バーチャルレンズの透過光を電気信号に変換することにより、前記被写体の像を撮像するイメージセンサを備える、
撮像装置。 A transmissive mirror having a negative refractive index,
The transmission mirror forms a virtual lens at a first imaging point which is symmetrical with respect to the object with the transmission mirror as an axis of symmetry,
The image sensor includes an image sensor for capturing an image of the subject by converting transmitted light of the virtual lens into an electrical signal.
Imaging device. 　前記透過型ミラーは、前記透過型ミラーを対称軸として前記結像点に対して対称となる位置にあるユーザの目の像を前記第１結像点に形成する、
請求項１又は２に記載の撮像装置。 The transmission mirror forms, at the first image formation point, an image of a user's eye located at a position symmetrical with respect to the image formation point with the transmission type mirror as a symmetry axis.
The imaging device according to claim 1. 　前記透過型ミラーは、
　　前記透過型ミラーに対して前記目の反対側に位置する物理オブジェクトの反射光を前記負の屈折率に応じて屈折させて透過させ、
　　前記目の網膜に前記物理オブジェクトの反射光に対応する透過光を結像し、
　　前記網膜に結像された透過光に対応する前記物理オブジェクトの像と、前記目の像と、を前記第１結像点に形成する、
請求項３に記載の撮像装置。 The transmission mirror is
According to the negative refractive index, the reflected light of the physical object located on the opposite side of the eye with respect to the transmission mirror is refracted and transmitted.
Imaging the transmitted light corresponding to the reflected light of the physical object on the retina of the eye;
Forming an image of the physical object corresponding to the transmitted light imaged on the retina and the image of the eye at the first imaging point;
The imaging device according to claim 3. 　前記透過型ミラーは、更に、前記被写体の目の網膜に結像された像と、前記目の像と、
を前記第１結像点に形成する、
請求項３又は４に記載の撮像装置。 The transmission mirror further includes an image formed on a retina of the eye of the subject, an image of the eye,
Are formed at the first imaging point,
The imaging device according to claim 3 or 4. 　前記透過型ミラーは、前記透過型ミラーを対称軸として前記イメージセンサに対して対
称となる第２結像点に、前記イメージセンサの像を形成し、
　前記イメージセンサは、前記イメージセンサの像に位置合わせされた前記被写体の目の
像を撮像する、
請求項３～５の何れかに記載の撮像装置。 The transmission mirror forms an image of the image sensor at a second imaging point symmetrical to the image sensor with the transmission mirror as a symmetry axis.
The image sensor captures an image of an eye of the subject aligned with the image of the image sensor.
The imaging device according to any one of claims 3 to 5. 　イメージセンサを備え、
　負の屈折率を有する透過型ミラーを備え、
　　前記透過型ミラーは、
　　　前記イメージセンサの反射光を前記負の屈折率に応じて屈折させて透過させ、
　　　前記透過型ミラーを対称軸として前記イメージセンサに対して対称となる第２結像点に、前記透過型ミラーの透過光を結像することにより、前記イメージセンサの空中画像を表示し、
　前記イメージセンサは、前記空中画像に位置合わせされた被写体の像を撮像する、
撮像装置。 Equipped with an image sensor,
A transmissive mirror having a negative refractive index,
The transmission mirror is
The light reflected from the image sensor is refracted according to the negative refractive index and transmitted.
An aerial image of the image sensor is displayed by forming an image of the transmitted light of the transmission mirror at a second imaging point symmetrical to the image sensor with the transmission mirror as a symmetry axis.
The image sensor captures an image of a subject aligned with the aerial image.
Imaging device. 　前記透過型ミラーは、
　　前記イメージセンサ側を向く第１面と、前記第１面の反対側を向く第２面と、を有し、
　　前記イメージセンサの光軸に対して傾斜し、
　　前記被写体の反射光を前記第２面で受け、
　　前記第２面で受けた光を前記負の屈折率に応じて屈折させて前記第１面から透過させ、
　　前記第１面からの透過光を前記結像点に結像する、
請求項１～７の何れかに記載の撮像装置。 The transmission mirror is
A first surface facing the image sensor side, and a second surface facing the opposite side of the first surface,
Inclined with respect to the optical axis of the image sensor,
Receiving the reflected light of the subject on the second surface,
The light received on the second surface is refracted according to the negative refractive index and transmitted from the first surface,
Imaging the transmitted light from the first surface to the imaging point;
The imaging device according to any one of claims 1 to 7. 　前記透過型ミラーの透過光を前記イメージセンサ上に結像するマイクロレンズアレイを備え、
　前記イメージセンサは、
　　前記マイクロレンズアレイによって結像された透過光に対応する像を撮像し、
　　前記撮像された像のライトフィールドを記録する、
請求項１～８の何れかに記載の撮像装置。 A microlens array configured to form an image of transmitted light of the transmission mirror on the image sensor;
The image sensor is
Imaging an image corresponding to the transmitted light imaged by the microlens array;
Recording the light field of the imaged image,
An imaging device according to any one of claims 1 to 8. 　前記イメージセンサは、前記イメージセンサの光軸に沿って移動可能である、
請求項１～９の何れかに記載の撮像装置。 The image sensor is movable along an optical axis of the image sensor.
The imaging device according to any one of claims 1 to 9. 　請求項１～１０の何れかに記載の撮像装置を備える、眼底検査装置。 A fundus examination apparatus comprising the imaging device according to any one of claims 1 to 10.
PCT/JP2018/024446 2017-06-29 2018-06-27 Imaging device Ceased WO2019004307A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-127140 2017-06-29
JP2017127140A JP6389547B1 (en) 2017-06-29 2017-06-29 Imaging apparatus and fundus examination apparatus

Publications (1)

Publication Number Publication Date
WO2019004307A1 true WO2019004307A1 (en) 2019-01-03

Family

ID=63518840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/024446 Ceased WO2019004307A1 (en) 2017-06-29 2018-06-27 Imaging device

Country Status (2)

Country Link
JP (1) JP6389547B1 (en)
WO (1) WO2019004307A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111366338B (en) * 2020-04-24 2021-11-19 华中科技大学 Imaging quality detection device and method of virtual image forming optical system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123500A1 (en) * 2007-03-30 2008-10-16 National Institute Of Information And Communications Technology Mid-air video interaction device and its program
JP2013197933A (en) * 2012-03-21 2013-09-30 Pioneer Electronic Corp Stereoscopic videophone device
JP2013207662A (en) * 2012-03-29 2013-10-07 Seiko Epson Corp Electronic apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010249907A (en) * 2009-04-13 2010-11-04 National Institute Of Advanced Industrial Science & Technology Imaging apparatus and imaging method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123500A1 (en) * 2007-03-30 2008-10-16 National Institute Of Information And Communications Technology Mid-air video interaction device and its program
JP2013197933A (en) * 2012-03-21 2013-09-30 Pioneer Electronic Corp Stereoscopic videophone device
JP2013207662A (en) * 2012-03-29 2013-10-07 Seiko Epson Corp Electronic apparatus

Also Published As

Publication number Publication date
JP2019012107A (en) 2019-01-24
JP6389547B1 (en) 2018-09-12

Similar Documents

Publication Publication Date Title
US7817354B2 (en) Panoramic imaging system
CN106412389A (en) Sensor assembly with selective infrared filter array
JP6688073B2 (en) Optical system and device having optical system
KR102388249B1 (en) Camera module for taking picture using visible light or infrared ray
WO2018192579A1 (en) Camera module
RU2015156050A (en) DEVICE FOR FORMING AN IMAGE WITH A WIDE FIELD OF REVIEW (FOV) WITH THE POSSIBILITY OF ACTIVE GUIDING VIEW ON THE PURPOSE
JP2003036434A (en) Optical system for portable personal authentication device
WO2021136215A1 (en) Photographing method, photographing module, and electronic apparatus
JP6424478B2 (en) Imaging device
CN109983764A (en) Projecting apparatus system
TWI614530B (en) Head-mounted display
JP6389547B1 (en) Imaging apparatus and fundus examination apparatus
CN100538436C (en) The optical aberration correcting system of digital camera and method
TWI853117B (en) Electronic equipment
US20190121005A1 (en) Imaging device and filter
JP2002218510A (en) 3D image acquisition device
TW200844635A (en) Imaging apparatus
JP2001264854A (en) Finder device and optical equipment using the same
KR101661661B1 (en) 3-dimensional camera module with dual lens and imaging method using the same
JPH11205664A (en) Imaging device and video camera
JP2015166723A (en) Imaging apparatus and imaging system
CN209472639U (en) camera device
JP7642025B2 (en) Information processing device
JP2002320128A (en) Card type camera
JP2008036226A (en) Imaging unit for vein authentication and electronic device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18822754

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 16/03/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 18822754

Country of ref document: EP

Kind code of ref document: A1