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WO2017038171A1 - Élément optique et dispositif d'irradiation optique - Google Patents

Élément optique et dispositif d'irradiation optique Download PDF

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Publication number
WO2017038171A1
WO2017038171A1 PCT/JP2016/065592 JP2016065592W WO2017038171A1 WO 2017038171 A1 WO2017038171 A1 WO 2017038171A1 JP 2016065592 W JP2016065592 W JP 2016065592W WO 2017038171 A1 WO2017038171 A1 WO 2017038171A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical element
adhesive
optical
holding body
concave portion
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/JP2016/065592
Other languages
English (en)
Japanese (ja)
Inventor
松島　竹夫
保宏 大内
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.)
Ushio Denki KK
Original Assignee
Ushio Denki KK
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 Ushio Denki KK filed Critical Ushio Denki KK
Priority to CN201680050043.8A priority Critical patent/CN107924038B/zh
Publication of WO2017038171A1 publication Critical patent/WO2017038171A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Definitions

  • the present invention relates to an optical member and a light irradiation device, and more particularly to an optical member in which an optical element and a holding frame are bonded and a light irradiation device using the optical member.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2014-3086 describes an optical system technique that allows an integrator to efficiently take in emitted light from a light source composed of a plurality of LEDs.
  • an optical member 30 in which an optical element 32 made of a translucent member is attached to an upper portion of a metal holding body 31 with an adhesive 33. It is used a lot.
  • the optical element 32 is a glass member and has a large difference in thermal expansion with the metal holder 31, a strong shear strain is applied to the adhesive 33 when the temperature changes, and the bonding interface peels off. There is a problem of end up. Such peeling of the bonding interface causes positional displacement and separation of the optical element 32, making it difficult to maintain a desired optical design.
  • an optical member for capturing emitted light from a plurality of LEDs needs to be enlarged according to the number of LEDs to be mounted. As the temperature increases, the difference in thermal expansion becomes more prominent, and the optical member is more likely to be displaced or detached.
  • the present invention provides an optical member that prevents the optical element from being separated from the metal holding member due to temperature change, causing positional displacement and separation. To do. Moreover, the structure of the light irradiation apparatus using the said optical member shall be provided.
  • an optical member according to the present invention is an optical member composed of a holder made of a metal material and an optical element made of a translucent member fixed to the holder via an adhesive.
  • a concave portion is formed in a mounting plane for attaching the optical element in the holding body, the adhesive is filled in the concave portion, and the optical element is fixed to the holding body by the adhesive. It is characterized by that.
  • the optical element has a quadrilateral shape, and the concave portion is formed at a position corresponding to each of four side edges of the optical element in the holding body.
  • the said recessed part is scattered and formed along the side edge of the said optical element, It is characterized by the above-mentioned.
  • the concave portion has a continuous groove shape extending along a side edge of the optical element.
  • the concave portion is formed in the mounting plane to which the optical element is attached, and the concave portion is filled with the adhesive, so that the thickness of the adhesive can be secured large, and the optical Even if thermal strain occurs due to the difference in thermal expansion between the element and the holding body, the strength against shear stress is improved, and peeling of the bonding interface by the adhesive can be prevented. This prevents the optical element from being displaced or peeled off.
  • FIG. 6 is a partially enlarged view (A) of a part A in FIG. 5 and a BB sectional view (B) thereof.
  • FIGS. 1A and 1B show an optical member 1 of the present invention, in which an optical element 3 is placed and fixed on a mounting plane 4 of a metal holder 2.
  • the optical element 3 include a condensing lens, a collimating lens, and a fly-eye lens.
  • the optical element 3 here may have a part having no optical action.
  • a blank portion (so-called marginal portion) to be joined to the holding body 2 may be provided on the periphery of the optical element 3.
  • a plurality of recesses 5, 5 are formed on the mounting plane 4 of the holding body 2, and the adhesive 6 is filled in the recesses 5.
  • the optical element 3 is bonded and fixed by the adhesive 6.
  • the holding body 2 and the optical element 3 have a quadrilateral shape when viewed from above, and the recess 5 is formed on each side edge of the mounting plane 4, and the optical element 3 has four side edges. It is fixed with adhesive.
  • the thickness of the adhesive 6 filled in the concave portion 5 is determined by the depth of the concave portion 5, the thickness of the adhesive 6 is ensured to be large by adjusting the depth of the concave portion 5. Can do.
  • an epoxy adhesive mainly composed of an epoxy resin an acrylic adhesive mainly composed of an acrylic resin, or the like is used.
  • a thermosetting adhesive agent may be sufficient, for example, a silicone type adhesive agent can also be used.
  • the number of the recesses 5 formed on the mounting plane 4 of the holding body 2 is determined according to the dimensions of the optical element 3 and the type of the adhesive 6, and the size and depth of the cross section of the recess 5 itself are determined. .
  • thermosetting silicone adhesive An example in which an optical element 3 (100 ⁇ 100 mm) made of silica glass is bonded to a holder 2 made of aluminum.
  • the optical element 3 has a four-sided shape and is bonded by an adhesive 6 filled in the recess 5 at each side edge. (The distance between the adhesives on the opposite side edges is 100 mm.)
  • Linear expansion coefficient of aluminum 23 ⁇ 10 ⁇ 6 / K
  • Linear expansion coefficient of silica glass 0.5 ⁇ 10 ⁇ 6 / K (4)
  • the temperature is increased from 20 ° C. (293 K) to 150 ° C.
  • the shear strain applied to the adhesive will be considered.
  • the thickness of the adhesive be t.
  • ⁇ t be the amount of strain when a force is applied in a direction perpendicular to the thickness direction.
  • shear strain ⁇ ⁇ t / t.
  • the strain amount at which the adhesive is sheared is a physical property value determined by the material of the adhesive, and in the case of a Si-based resin, the strain reaches about 1 when the strain is about 1.
  • Adhesive thickness t 0.01 mm.
  • This ⁇ 15 is a strain that is 15 times the shear strain when the adhesive is sheared, and shear always occurs. Therefore, the depth of the concave portion is required to be 0.15 mm or more in the above combination (the holding body 2 is aluminum, the optical element 3 is silica glass, and the distance between the adhesives 6 on the opposite side edges is 100 mm). It becomes. In other words, a depth of 0.15% or more of the adhesive gap is required.
  • the strain at which the adhesive is sheared is approximately 0.05.
  • Adhesive thickness t 0.01 mm.
  • This ⁇ 4 is a strain that is 80 times the shear strain when the adhesive is sheared, and shear always occurs. Therefore, the depth of the recess is required to be 0.8 mm or more in the above combination (the holding body 2 is aluminum, the optical element 3 is silica glass, and the distance between the adhesives 6 on the opposite side edges is 100 mm). It becomes. In other words, a depth of 0.8% or more of the gap of the adhesive 6 is necessary.
  • the relationship between the thickness of the adhesive and the shear strain is schematically shown in FIG. 4, and in the conventional structure (A) having no concave portion, the thickness of the adhesive cannot be increased. Shear strain based on the difference in deformation amount due to thermal expansion and contraction between the optical element 3 and the optical element 3 greatly affects the adhesive, and shear resistance is not ensured. On the other hand, in the present invention (B) having a recess, the shear resistance is extremely improved because the shear strain is buffered by the thickness of the adhesive and dispersed in the thickness direction. In the conventional structure having no recess, if the thickness of the adhesive is made to be the same as the depth of the recess of the present invention, the adhesive in the softened state is unstable in shape and its instability.
  • the mounting plane ensures a sufficient relative positional relationship between the holding body and the optical element and at the same time secures the thickness of the adhesive. It is something that can be done.
  • FIG. 4 shows another embodiment.
  • the concave portions 5 formed on the mounting plane 4 of the holding body 2 are shown scattered along the side edges of the optical element 3, but in the embodiment of FIG. 4,
  • the recess 5 is formed as a continuous groove along the side edge of the optical element 3.
  • FIG. 5 and 6 show still another embodiment, in which the holding body 2 is formed with a filling hole 7 communicating with the recess 5 and opening to the outside.
  • the optical element 3 in mounting the optical element 3, the optical element 3 can be placed on the mounting plane 4 of the holding body 2, and the adhesive 6 can be filled into the recess 5 through the filling hole 7. .
  • a predetermined pressure By pressing the optical element 3 against the mounting plane 4 with a predetermined pressure, an unstable lift of the optical element 3 due to the injection of the adhesive 6 is suppressed, and an appropriate relative position between the optical element 3 and the holding body 2 is suppressed. The relationship is more secured.
  • FIG. 7 shows an example of a light irradiation device 15 on which the optical member 1 is mounted.
  • the LEDs 12 are arranged side by side on the substrate 11, the light source unit 10 on which the substrate 11 is placed on the support 13, and the optical axis of the light source unit 10
  • the provided optical member 1 is disposed.
  • a projection optical system 17 is provided on the optical member 10, and light from the light source unit 10 is projected onto the light projection surface 18 via the optical member 1 ⁇ the projection optical system 17.
  • a collimating lens is provided as the optical element 3 in the optical member 1, and the optical element 3 is mounted and fixed on the mounting plane 4 of the holding body 2.
  • the optical member composed of a holding body made of a metal material and an optical element made of a translucent member fixed to the holding body via an adhesive
  • a recess is formed in the mounting plane to which the optical element is attached, the adhesive is filled in the recess, and the optical element is fixed to the holding body by the adhesive, so that the thickness of the adhesive is sufficient.
  • the shear stress acting on the adhesive can be relaxed based on the difference between the linear expansion coefficients of the holder and the optical element, and shearing of the adhesive can be prevented. And the effect that the relative positional relationship of an optical element and a holding body can be maintained appropriately by the attachment plane of a holding body is produced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention aborde le problème de la réalisation d'une structure telle que le cisaillement d'un agent de liaison due à la différence entre les coefficients de dilatation linéaire d'un support constitué d'un matériau métallique et d'un élément optique peut être empêché pour un élément optique dans lequel l'élément optique est fixé au support avec l'agent de liaison, tout en maintenant de façon appropriée la relation de position relative entre l'élément optique et le support. Avec la solution selon l'invention, l'agent de liaison vient remplir des cavités formées dans la surface plate du support sur lequel est monté l'élément optique et l'agent de liaison fixe l'élément optique au support.
PCT/JP2016/065592 2015-08-28 2016-05-26 Élément optique et dispositif d'irradiation optique Ceased WO2017038171A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680050043.8A CN107924038B (zh) 2015-08-28 2016-05-26 光学部件以及光照射装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-168874 2015-08-28
JP2015168874A JP6108293B2 (ja) 2015-08-28 2015-08-28 光学部材および光照射装置

Publications (1)

Publication Number Publication Date
WO2017038171A1 true WO2017038171A1 (fr) 2017-03-09

Family

ID=58188078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/065592 Ceased WO2017038171A1 (fr) 2015-08-28 2016-05-26 Élément optique et dispositif d'irradiation optique

Country Status (3)

Country Link
JP (1) JP6108293B2 (fr)
CN (1) CN107924038B (fr)
WO (1) WO2017038171A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6504193B2 (ja) * 2017-03-30 2019-04-24 日亜化学工業株式会社 発光装置
JP6913532B2 (ja) * 2017-06-28 2021-08-04 京セラ株式会社 光半導体素子収納用パッケージおよび光半導体装置
JP7398882B2 (ja) * 2019-05-09 2023-12-15 三菱電機株式会社 光源ユニット、灯具及び照明装置
JP6884189B2 (ja) * 2019-10-29 2021-06-09 レノボ・シンガポール・プライベート・リミテッド 携帯用情報機器およびその製造方法
JP7395376B2 (ja) * 2020-02-06 2023-12-11 Hoya株式会社 光照射装置
JP2022180743A (ja) * 2021-05-25 2022-12-07 東芝ライテック株式会社 車両用照明装置、および車両用灯具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03271707A (ja) * 1990-03-20 1991-12-03 Fujitsu Ltd 光学レンズの固定構造
JP2011197081A (ja) * 2010-03-17 2011-10-06 Konica Minolta Business Technologies Inc 光走査光学装置
JP2014003086A (ja) * 2012-06-15 2014-01-09 Ushio Inc 光照射装置、露光装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4149184B2 (ja) * 2002-03-19 2008-09-10 株式会社エヌ・ティ・ティ・データ 空域設計支援システム及び方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03271707A (ja) * 1990-03-20 1991-12-03 Fujitsu Ltd 光学レンズの固定構造
JP2011197081A (ja) * 2010-03-17 2011-10-06 Konica Minolta Business Technologies Inc 光走査光学装置
JP2014003086A (ja) * 2012-06-15 2014-01-09 Ushio Inc 光照射装置、露光装置

Also Published As

Publication number Publication date
JP2017044947A (ja) 2017-03-02
CN107924038B (zh) 2021-03-26
CN107924038A (zh) 2018-04-17
JP6108293B2 (ja) 2017-04-05

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