WO2023276061A1 - 光演算装置及び光演算方法 - Google Patents
光演算装置及び光演算方法 Download PDFInfo
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- WO2023276061A1 WO2023276061A1 PCT/JP2021/024814 JP2021024814W WO2023276061A1 WO 2023276061 A1 WO2023276061 A1 WO 2023276061A1 JP 2021024814 W JP2021024814 W JP 2021024814W WO 2023276061 A1 WO2023276061 A1 WO 2023276061A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4233—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4272—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
- G02B5/1871—Transmissive phase gratings
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06E—OPTICAL COMPUTING DEVICES; COMPUTING DEVICES USING OTHER RADIATIONS WITH SIMILAR PROPERTIES
- G06E3/00—Devices not provided for in group G06E1/00, e.g. for processing analogue or hybrid data
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/06—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons
- G06N3/067—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using optical means
Definitions
- the present invention relates to an optical computing device and an optical computing method that perform optical computing using an optical diffraction element.
- An optical diffraction element that has a plurality of cells and is designed to optically perform a predetermined operation by causing mutual interference between signal lights that have passed through each cell.
- Optical computation using such an optical diffraction element has the advantage of being faster and consuming less power than electrical computation using a processor. Further, by causing two or more optical diffraction elements arranged side by side to act on the signal light in sequence, it is possible to realize a multi-stage optical operation (two or more stages of optical operation).
- Patent Document 1 discloses an optical neural network having an input layer, an intermediate layer, and an output layer.
- the optical diffraction element described above can be used, for example, as an intermediate layer of such an optical neural network.
- One aspect of the present invention has been made in view of the above problems, and an object thereof is to realize an optical operation device or an optical operation method capable of performing optical operations at high speed and with high efficiency. .
- an optical arithmetic device is an optical arithmetic device including an optical diffraction element group including at least one optical diffraction element having an optical arithmetic function, wherein the optical diffraction
- the element group is an object arranged outside the light arithmetic device, and is reflected or scattered by an object that is a non-light-emitting body other than the display, or is arranged outside the light arithmetic device.
- the light emitted from the object, which is a light-emitting object other than the display sequentially passes through the optical diffraction elements included in the optical diffraction element group.
- an optical computing method is an optical computing method that performs optical computing using an optical computing device that includes an optical diffraction element group including at least one optical diffraction element.
- an optical computing device that includes an optical diffraction element group including at least one optical diffraction element.
- Light emitted from an object, which is a light emitter other than a display passes through each optical diffraction element included in the optical diffraction element group in order.
- an optical computing device or an optical computing method capable of performing optical computing at high speed and with high efficiency.
- FIG. 1A is a perspective view of an optical computing device according to an embodiment of the present invention
- FIG. (b) is a plan view of the optical arithmetic device.
- 2A and 2B are plan views of a first optical diffraction element and a filter (diaphragm) provided in the optical arithmetic device shown in FIG. 1, respectively;
- FIG. (a) shows the behavior of light (signal light) from a point close to the optical axis of the first optical diffraction element;
- (b) shows the behavior of light (noise light) from a point far from the optical axis of the first optical diffraction element; ) behavior.
- 2A is a plan view of an optical diffraction element included in the optical arithmetic device shown in FIG.
- FIG. (b) is a perspective view enlarging a part of the optical diffraction element.
- 2A is a perspective view of an optical arithmetic device that is a first modification of the optical arithmetic device shown in FIG. 1;
- FIG. (b) is a plan view of the optical arithmetic device.
- 5A and 5B are plan views of a first optical diffraction element and a filter (block), respectively, included in the optical arithmetic device shown in FIG. 4; FIG.
- FIG. 3A is a perspective view of an optical arithmetic device that is a second modification of the optical arithmetic device shown in FIG. 1;
- FIG. (b) is a plan view of the optical arithmetic device.
- 7A and 7B are plan views of a first optical diffraction element and a filter (lens) provided in the optical arithmetic device shown in FIG. 6, respectively;
- FIG. 11 is a perspective view of an optical arithmetic device that is a third modification of the optical arithmetic device shown in FIG. 1;
- FIG. 1A is a perspective view of the optical computing device 1
- FIG. 1B is a plan view of the optical computing device 1.
- the optical arithmetic device 1 includes an optical diffraction element group 11 and a filter 12, as shown in FIG.
- the optical diffraction element group 11 is a set of n optical diffraction elements 11a1 to 11an.
- n is any natural number equal to or greater than 1.
- Each optical diffraction element 11ai is an element having an optical arithmetic function, that is, a function of converting the two-dimensional intensity distribution of signal light according to a predetermined conversion rule.
- i is each natural number of 1 or more and n or less.
- FIG. 1 a set of three optical diffraction elements 11a1 to 11a3 is illustrated as an optical diffraction element group 11. As shown in FIG. A specific example of each optical diffraction element 11ai will be described later with reference to FIG.
- the filter 12 is arranged in front of the optical diffraction element group 11 .
- the filter 12 selectively guides, to the optical diffraction element group 11, light traveling in a direction in which the angle ⁇ between the optical axis L1 of the first optical diffraction element 11a1 on which the signal light is first incident and the optical axis L1 is a specific angle or less. is the configuration.
- a diaphragm having an aperture 12a is used as the filter 12. Therefore, the specific angle described above is the maximum value ⁇ 1 of the angle between the optical axis L1 and the optical axis of the light beam incident on the first optical diffraction element 11a1 through the opening 12a of the filter 12, which is the diaphragm. .
- light incident on the filter 12 light for which the angle ⁇ between the direction of travel and the optical axis L 1 is greater than a specific angle ⁇ 1 is absorbed by the filter 12 .
- optical arithmetic is performed on the visual information of the object S by inputting light from a display displaying an image including the object S as a subject into the optical diffraction element group.
- the optical arithmetic device 1 of the present embodiment light from the object S itself is input to the optical diffraction element group 11 to perform optical arithmetic on the visual information of the object S.
- the optical diffraction element group 11 is arranged so that the light from the object S itself passes through the n optical diffraction elements 11a1 to 11a included in the optical diffraction element group 11 in order.
- the target object S refers to an object other than the display, which is arranged outside the optical operation device 11 .
- the light from the object S itself refers to the light reflected or scattered by the object S when the object S is a non-light emitting body, and when the object S is a light emitting body refers to the light emitted from the object S.
- the optical arithmetic device 1 of the present embodiment there is no need to convert an optical signal into an electrical signal in order to form an image including the object S as a subject.
- the optical arithmetic device 1 may further include another image sensor that converts the signal light output from the optical diffraction element group 11 into an electrical signal.
- another image sensor for example, a two-dimensional image sensor including a plurality of light receiving cells arranged in a matrix can be used.
- FIG. 2A and 2B are plan views showing the filter 12 and the first optical diffraction element 11a1 of the optical arithmetic device 1.
- FIG. 2A and 2B are plan views showing the filter 12 and the first optical diffraction element 11a1 of the optical arithmetic device 1.
- Light from a point Pa close to the optical axis L1 of the first optical diffraction element 11a1 has an angle ⁇ formed between the traveling direction and the optical axis L1 of the above-described specific angle ⁇ 1 or less, as shown in FIG. Therefore, the light can enter the first optical diffraction element 11a1 through the opening 12a.
- Such light is mainly assumed to be light from the object S, that is, signal light.
- Such light is mainly assumed to be light from other than the object S, that is, noise light.
- the filter 12 it is possible to prevent noise light from entering the first optical diffraction element 11a1 without preventing signal light from entering the first optical diffraction element 11a1. Therefore, it is possible to suppress a decrease in calculation accuracy due to noise light.
- FIG. 3A is a plan view of the optical diffraction element 11ai according to this specific example.
- FIG. 3(b) is an enlarged perspective view of a portion of the optical diffraction element 11ai according to this specific example (the portion surrounded by the dotted line in FIG. 3(a)).
- the optical diffraction element 11ai is composed of a plurality of microcells whose thicknesses or refractive indices are set independently of each other.
- the signal lights with different phases diffracted by the microcells interfere with each other, thereby performing a predetermined light calculation (two-dimensional intensity distribution according to a predetermined conversion rule). conversion) is performed.
- the term “microcell” refers to a cell with a cell size of less than 10 ⁇ m, for example.
- the term “cell size” refers to the square root of the cell area. For example, when the microcell has a square shape in plan view, the cell size is the length of one side of the cell. The lower limit of cell size is, for example, 1 nm.
- the optical diffraction element 11ai illustrated in FIG. 3 is composed of 200 ⁇ 200 microcells arranged in a matrix.
- the plan view shape of each microcell is a square of 500 nm ⁇ 500 nm
- the plan view shape of the optical diffraction element 11ai is a square of 100 ⁇ m ⁇ 100 ⁇ m.
- each microcell is composed of a quadrangular prism-shaped pillar having a square bottom surface with the length of each side equal to the size of the cell. Further, in this case, the amount of phase change of the signal light passing through each microcell is determined according to the height of the pillars forming the microcell. That is, the phase change amount of signal light passing through microcells formed by tall pillars is large, and the phase change amount of signal light passing through microcells formed by short pillars is small.
- the setting of the thickness or refractive index of each microcell can be realized using machine learning, for example.
- machine learning for example, the two-dimensional intensity distribution of the signal light input to the optical diffraction element 11ai is input, and the two-dimensional intensity distribution of the signal light output from the optical diffraction element 11ai is output.
- a model can be used that includes the thickness or refractive index of each microcell as a parameter.
- the two-dimensional intensity distribution of signal light input to the optical diffraction element 11ai refers to a set of intensities of signal light input to each microcell constituting the optical diffraction element 11ai.
- the two-dimensional intensity distribution of the signal light output from the optical diffraction element 11ai is a set of the intensity of the signal light input to each microcell constituting the optical diffraction element 11ai+1 arranged after the optical diffraction element 11ai.
- it refers to a set of intensities of signal light input to each cell that constitutes a light-receiving section arranged after the optical diffraction element 11ai.
- FIG. 4(a) is a perspective view of the optical arithmetic device 1A
- FIG. 4(b) is a plan view of the optical arithmetic device 1A.
- the difference in the optical arithmetic device 1A from the optical arithmetic device 1 is that a block is used as the filter 12A instead of using an aperture as the filter 12.
- This block is made of a material having a higher refractive index than air, and is arranged such that the surface 12A1 opposite to the side facing the first optical diffraction element 11a1 is perpendicular to the optical axis L1.
- the filter 12A selectively guides to the optical diffraction element group 11 light that travels in a direction in which the angle .theta.
- the specific angle described above is the critical angle ⁇ 2 on the surface 12A1 of the block forming the filter 12A.
- light for which the angle .theta. between the traveling direction and the optical axis L1 is greater than a specific angle .theta.2 is totally reflected by the filter 12A.
- FIG. (a) and (b) of FIG. 5 are plan views showing the filter 12A and the first optical diffraction element 11a1 of the optical arithmetic device 1A.
- Such light is mainly assumed to be light from the object S, that is, signal light.
- the light from the point Pb far from the optical axis L1 of the first optical diffraction element 11a1, as shown in FIG. it cannot enter the first optical diffraction element 11a1.
- Such light is mainly assumed to be light from other than the object S, that is, noise light.
- the optical arithmetic device 1A it is possible to prevent noise light from entering the first optical diffraction element 11a1 without preventing signal light from entering the first optical diffraction element 11a1. Therefore, it is possible to suppress a decrease in calculation accuracy due to noise light.
- FIG. 6(a) is a perspective view of the optical arithmetic device 1B
- FIG. 6(b) is a plan view of the optical arithmetic device 1B.
- the difference in the optical arithmetic device 1B from the optical arithmetic device 1 is that a lens is used as the filter 12B instead of using an aperture as the filter 12.
- This lens is made of a material having a higher refractive index than air, and is arranged so that the optical axis of this lens coincides with the optical axis of the first optical diffraction element 11a1.
- the filter 12B selectively guides to the optical diffraction element group 11 light that travels in a direction in which the angle .theta.
- the above-mentioned specific angle is between the optical axis L1 and the optical axis of the light beam incident on the first optical diffraction element 11a1 through the filter 12B, which is a lens, before entering the filter 12B, which is a lens. is the maximum value ⁇ 3 of the angle formed by .
- FIG. (a) and (b) of FIG. 7 are plan views showing the filter 12B and the first optical diffraction element 11a1 of the optical arithmetic device 1B.
- Light from a point Pa close to the optical axis L1 of the first optical diffraction element 11a1 has an angle ⁇ formed between the direction of travel and the optical axis L1 of the above-described specific angle ⁇ 3 or less, as shown in FIG. Therefore, it can be incident on the first optical diffraction element 11a1.
- Such light is mainly assumed to be light from the object S, that is, signal light.
- the light from the point Pb far from the optical axis L1 of the first optical diffraction element 11a1, as shown in FIG. it cannot enter the first optical diffraction element 11a1.
- Such light is mainly assumed to be light from other than the object S, that is, noise light.
- the optical arithmetic device 1B it is possible to prevent noise light from entering the first optical diffraction element 11a1 without preventing signal light from entering the first optical diffraction element 11a1. Therefore, it is possible to suppress a decrease in calculation accuracy due to noise light.
- FIG. 8 is a perspective view of the optical arithmetic device 1C.
- the difference in the optical arithmetic device 1C from the optical arithmetic device 1 is that the filter 12 is omitted and the light source 13 is added.
- the light source 13 is configured to irradiate the light for illuminating the object S in a limited manner to a specific range including the optical axis L1 of the first optical diffraction element 11a1.
- the object S is a piece of paper on which numbers are drawn, and the optical diffraction element group 11 determines whether the number drawn on the paper is one of 0 to 9. Designed.
- the illumination range of the light source 13 is not limited, in addition to the light (signal light) reflected or scattered by the target area of the object S (the area where "4" is drawn in the illustrated example), the object S (in the illustrated example, areas where "3" and "5" are drawn), and light (noise light) reflected or scattered by an object other than the target object S is detected by the optical diffraction element. Incident into group 11 .
- the illumination range by the light source 13 is limited to a specific range including the optical axis L1 of the first optical diffraction element 11a1
- the attention area of the object S in the illustrated example, "4" is drawn area
- the optical arithmetic device 1C it is possible to prevent noise light from entering the first optical diffraction element 11a1 without preventing signal light from entering the first optical diffraction element 11a1. Therefore, it is possible to suppress a decrease in calculation accuracy due to noise light.
- An optical arithmetic device comprising an optical diffraction element group consisting of at least one optical diffraction element having an optical arithmetic function,
- the light diffraction element group is an object placed outside the optical operation device, and is reflected or scattered by an object that is a non-light-emitting body other than the display, or the light outside the optical operation device. and is arranged such that light emitted from the object, which is a light-emitting body other than the display, sequentially passes through each optical diffraction element included in the optical diffraction element group.
- An optical arithmetic device characterized by:
- the filter is an aperture
- the specific angle is the maximum value of the angle formed by the optical axis of the first optical diffraction element and a light ray incident on the first optical diffraction element through the opening of the aperture.
- the filter is a block made of a material having a higher refractive index than air, and arranged such that the surface opposite to the side facing the first optical diffraction element is perpendicular to the optical axis, the specific angle is a critical angle at the surface of the block;
- the optical arithmetic device according to mode 2 characterized by:
- the filter is a lens
- the specific angle is the maximum value of the angle formed between the optical axis of the first optical diffraction element and the optical axis of a ray that passes through the lens and enters the first optical diffraction element before entering the lens.
- the optical diffraction element group includes at least one optical diffraction element having a plurality of microcells whose thicknesses or refractive indices are set independently of each other.
- the optical arithmetic device according to any one of aspects 1 to 6, characterized by:
- An optical calculation method characterized by:
- optical arithmetic unit 11 optical diffraction element group 11a1 to 11an optical diffraction element 12 filter (diaphragm) 12A filter (block) 12B filter (lens) 13 light source
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Abstract
Description
本発明の一実施形態に係る光演算装置1の構成について、図1を参照して説明する。図1の(a)は、光演算装置1の斜視図であり、図1の(b)は、光演算装置1の平面図である。
光演算装置1におけるフィルタ12の効果について、図2を参照して説明する。図2の(a)及び(b)は、光演算装置1のフィルタ12及び第1光回折素子11a1を示す平面図である。
光回折素子11aiの具体例について、図3を参照して説明する。図3の(a)は、本具体例に係る光回折素子11aiの平面図である。図3の(b)は、本具体例に係る光回折素子11aiの一部(図3の(a)において点線で囲んだ部分)を拡大した斜視図である。
光演算装置1の第1の変形例(以下、光演算装置1Aと記載する)について、図4を参照して説明する。図4の(a)は、光演算装置1Aの斜視図であり、図4の(b)は、光演算装置1Aの平面図である。
光演算装置1Aの効果について、図5を参照して説明する。図5の(a)及び(b)は、光演算装置1Aのフィルタ12A及び第1光回折素子11a1を示す平面図である。
光演算装置2の第1の変形例(以下、光演算装置1Bと記載する)について、図6を参照して説明する。図6の(a)は、光演算装置1Bの斜視図であり、図6の(b)は、光演算装置1Bの平面図である。
光演算装置1Bの効果について、図7を参照して説明する。図7の(a)及び(b)は、光演算装置1Bのフィルタ12B及び第1光回折素子11a1を示す平面図である。
光演算装置1の第1の変形例(以下、光演算装置1Cと記載する)について、図8を参照して説明する。図8は、光演算装置1Cの斜視図である。
本明細書には、以下の態様が開示されている。
光演算機能を有する少なくとも1つの光回折素子からなる光回折素子群を備えた光演算装置であって、
前記光回折素子群は、当該光演算装置の外部に配置された対象物であって、ディスプレイ以外の非発光体である対象物にて反射若しくは散乱された光、又は、当該光演算装置の外部に配置された対象物であって、ディスプレイ以外の発光体である対象物にて発せられた光が、前記光回折素子群に含まれる各光回折素子を順に通過する、ように配置されている、
ことを特徴とする光演算装置。
前記光回折素子群の前段に配置されたフィルタを更に備えており、
前記フィルタは、前記光回折素子群に含まれる光回折素子のうち、最初に信号光が入射する第1光回折素子の光軸との成す角が特定の角度以下となる方向に進行する光を選択的に透過する、
ことを特徴とする態様1に記載の光演算装置。
前記フィルタは、絞りであり、
前記特定の角度は、前記第1光回折素子の光軸と、前記絞りの開口を通って前記第1光回折素子に入射する光線と、の成す角の最大値である、
ことを特徴とする態様2に記載の光演算装置。
前記フィルタは、空気よりも屈折率の高い材料により構成され、前記第1光回折素子と対向する側と反対側の表面が前記光軸と直交するように配置されたブロックであり、
前記特定の角度は、前記ブロックの前記表面における臨界角である、
ことを特徴とする態様2に記載の光演算装置。
前記フィルタは、レンズであり、
前記特定の角度は、前記第1光回折素子の光軸と、前記レンズを通って前記第1光回折素子に入射する光線の、前記レンズに入射する前の光軸との成す角の最大値である、
ことを特徴とする態様2に記載の光演算装置。
前記対象物を照らす光を、前記第1光回折素子の光軸を含む特定の範囲に限定的に照射する光源を更に備えている、
ことを特徴とする態様1に記載の光演算装置。
前記光回折素子群には、厚み又は屈折率が互いに独立に設定された複数のマイクロセルを有する光回折素子が少なくとも1つ含まれている、
ことを特徴とする態様1~6の何れか一態様に記載の光演算装置。
少なくとも1つの光回折素子からなる光回折素子群を備えた光演算装置を用いて光演算を行う光演算方法であって、
前記光演算装置の外部に配置された対象物であって、ディスプレイ以外の非発光体である対象物にて反射若しくは散乱された光、又は、前記光演算装置の外部に配置された対象物であって、ディスプレイ以外の発光体である対象物にて発せられた光が、前記光回折素子群に含まれる各光回折素子を順に通過する、
ことを特徴とする光演算方法。
本発明は上述した実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、上述した実施形態に開示された各技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。
11 光回折素子群
11a1~11an 光回折素子
12 フィルタ(絞り)
12A フィルタ(ブロック)
12B フィルタ(レンズ)
13 光源
Claims (8)
- 光演算機能を有する少なくとも1つの光回折素子からなる光回折素子群を備えた光演算装置であって、
前記光回折素子群は、当該光演算装置の外部に配置された対象物であって、ディスプレイ以外の非発光体である対象物にて反射若しくは散乱された光、又は、当該光演算装置の外部に配置された対象物であって、ディスプレイ以外の発光体である対象物にて発せられた光が、前記光回折素子群に含まれる各光回折素子を順に通過する、ように配置されている、
ことを特徴とする光演算装置。 - 前記光回折素子群の前段に配置されたフィルタを更に備えており、
前記フィルタは、前記光回折素子群に含まれる光回折素子のうち、最初に信号光が入射する第1光回折素子の光軸との成す角が特定の角度以下となる方向に進行する光を選択的に透過する、
ことを特徴とする請求項1に記載の光演算装置。 - 前記フィルタは、絞りであり、
前記特定の角度は、前記第1光回折素子の光軸と、前記絞りの開口を通って前記第1光回折素子に入射する光線と、の成す角の最大値である、
ことを特徴とする請求項2に記載の光演算装置。 - 前記フィルタは、空気よりも屈折率の高い材料により構成され、前記第1光回折素子と対向する側と反対側の表面が前記光軸と直交するように配置されたブロックであり、
前記特定の角度は、前記ブロックの前記表面における臨界角である、
ことを特徴とする請求項2に記載の光演算装置。 - 前記フィルタは、レンズであり、
前記特定の角度は、前記第1光回折素子の光軸と、前記レンズを通って前記第1光回折素子に入射する光線の、前記レンズに入射する前の光軸との成す角の最大値である、
ことを特徴とする請求項2に記載の光演算装置。 - 前記対象物を照らす光を、前記光回折素子群に含まれる光回折素子のうち、最初に信号光が入射する第1光回折素子の光軸を含む特定の範囲に限定的に照射する光源を更に備えている、
ことを特徴とする請求項1に記載の光演算装置。 - 前記光回折素子群には、厚み又は屈折率が互いに独立に設定された複数のマイクロセルを有する光回折素子が少なくとも1つ含まれている、
ことを特徴とする請求項1~6の何れか一項に記載の光演算装置。 - 少なくとも1つの光回折素子からなる光回折素子群を備えた光演算装置を用いて光演算を行う光演算方法であって、
前記光演算装置の外部に配置された対象物であって、ディスプレイ以外の非発光体である対象物にて反射若しくは散乱された光、又は、前記光演算装置の外部に配置された対象物であって、ディスプレイ以外の発光体である対象物にて発せられた光が、前記光回折素子群に含まれる各光回折素子を順に通過する、
ことを特徴とする光演算方法。
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| PCT/JP2021/024814 WO2023276061A1 (ja) | 2021-06-30 | 2021-06-30 | 光演算装置及び光演算方法 |
| JP2022568392A JP7522858B2 (ja) | 2021-06-30 | 2021-06-30 | 光演算装置及び光演算方法 |
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| JPH04280385A (ja) * | 1991-03-08 | 1992-10-06 | Sumitomo Cement Co Ltd | ニュ−ラルネットワ−ク |
| JPH1196140A (ja) * | 1997-09-19 | 1999-04-09 | Olympus Optical Co Ltd | 内積演算装置 |
| US7847225B2 (en) | 2008-05-02 | 2010-12-07 | Hiroshima University | Optical neural network |
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| US5963347A (en) * | 1994-06-28 | 1999-10-05 | Budil; Matthias | Holographic neurochip |
| JPH08263161A (ja) * | 1995-03-27 | 1996-10-11 | Olympus Optical Co Ltd | 画像演算装置 |
| US20020105725A1 (en) * | 2000-12-18 | 2002-08-08 | Sweatt William C. | Electrically-programmable optical processor with enhanced resolution |
| JP3733293B2 (ja) * | 2001-02-02 | 2006-01-11 | 三菱電機株式会社 | 恒星センサ |
| JP3804579B2 (ja) * | 2002-06-19 | 2006-08-02 | 三菱電機株式会社 | 恒星センサ |
| US20060050391A1 (en) * | 2004-08-10 | 2006-03-09 | Johan Backlund | Structured-groove diffraction granting and method for control and optimization of spectral efficiency |
| WO2019200289A1 (en) * | 2018-04-13 | 2019-10-17 | The Regents Of The University Of California | Devices and methods employing optical-based machine learning using diffractive deep neural networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04280385A (ja) * | 1991-03-08 | 1992-10-06 | Sumitomo Cement Co Ltd | ニュ−ラルネットワ−ク |
| JPH1196140A (ja) * | 1997-09-19 | 1999-04-09 | Olympus Optical Co Ltd | 内積演算装置 |
| US7847225B2 (en) | 2008-05-02 | 2010-12-07 | Hiroshima University | Optical neural network |
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| See also references of EP4365704A4 |
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| JPWO2023276061A1 (ja) | 2023-01-05 |
| EP4365704A4 (en) | 2024-08-07 |
| US20240103207A1 (en) | 2024-03-28 |
| JP7522858B2 (ja) | 2024-07-25 |
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