JP2000294022A5 - - Google Patents

Download PDF

Info

Publication number
JP2000294022A5
JP2000294022A5 JP1999102212A JP10221299A JP2000294022A5 JP 2000294022 A5 JP2000294022 A5 JP 2000294022A5 JP 1999102212 A JP1999102212 A JP 1999102212A JP 10221299 A JP10221299 A JP 10221299A JP 2000294022 A5 JP2000294022 A5 JP 2000294022A5
Authority
JP
Japan
Prior art keywords
light
incident end
face
light source
light guide
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.)
Granted
Application number
JP1999102212A
Other languages
Japanese (ja)
Other versions
JP2000294022A (en
JP4331313B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP10221299A priority Critical patent/JP4331313B2/en
Priority claimed from JP10221299A external-priority patent/JP4331313B2/en
Publication of JP2000294022A publication Critical patent/JP2000294022A/en
Publication of JP2000294022A5 publication Critical patent/JP2000294022A5/ja
Application granted granted Critical
Publication of JP4331313B2 publication Critical patent/JP4331313B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【特許請求の範囲】
【請求項1】 光出射のための出射面と背面を提供するメジャー面、並びに光導入のための入射端面を備えた導光素子であって;
前記背面には、光進行方向転換のための多数の突起列P1,P2,P3・・・・・が設けられており、
各突起列Pi (i=1,2,3・・・・・)は前記入射端面とほぼ平行に延在するとともに、前記入射端面に関して相対的に近く且つ切り立った第1面Si と前記入射端面に関して相対的に遠く且つ傾斜した第2面Ti を含み、
第2面Ti は、前記出射面へ向かう光を生成する内部反射機能と、該突起列Pi からの漏出光を生成する漏出機能を有し、
突起列Pj (j=2,3・・・・・)は、先行する突起列Pj-1 の第2面Tj-1 からの漏出光を第1面Sj を通して回収し、第2面Tj へ内部入射させるために連鎖的に協働するように配列されている、前記導光素子。
【請求項2】 各突起列Pi (i=1,2,3・・・・・)は、先鋭でない断面形状を有する先端部を備えている、請求項1に記載された導光素子。
【請求項3】 導光板と前記導光板に結合されたシート状部材を含み、前記シート状部材が前記多数の突起列P1,P2,P3・・・・・を備えている、請求項1または請求項2に記載された導光素子。
【請求項4】 前記出射面は、出力指向特性を修正するための多数の突起列を備え、前記突起列は前記入射端面にほぼ垂直に延在している、請求項1〜請求項3のいずれか1項に記載された導光素子。
【請求項5】 一次光源と、前記一次光源から供給された光を方向転換された照明光に変換するための光学素子を含む光源装置であって;
前記光学素子は、光出射のための出射面と背面を提供するメジャー面、並びに光導入のための入射端面を備え、
前記背面には、光進行方向転換のための多数の突起列P1,P2,P3・・・・・が設けられており、
各突起列Pi (i=1,2,3・・・・・)は前記入射端面とほぼ平行に延在するとともに、前記入射端面に関して相対的に近く且つ切り立った第1面Si と前記入射端面に関して相対的に遠く且つ傾斜した第2面Ti を含み、
第2面Ti は、前記出射面へ向かう光を生成する内部反射機能と、該突起列Pi からの漏出光を生成する漏出機能を有し、
突起列Pj (j=2,3・・・・・)は、先行する突起列Pj-1 の第2面Tj-1 からの漏出光を第1面Sj を通して回収し、第2面Tj へ内部入射させるために連鎖的に協働するように配列されている、前記光源装置。
【請求項6】 各突起列Pi (i=1,2,3・・・・・)は、先鋭でない断面形状を有する先端部を備えている、請求項5に記載された前記光源装置。
【請求項7】 導光板と前記導光板に結合されたシート状部材を含み、前記シート状部材が前記多数の突起列P1,P2,P3・・・・・を備えている、請求項5または請求項6に記載された光源装置。
【請求項8】 前記出射面は、出力指向特性を修正するための多数の突起列を備え、前記突起列は前記入射端面にほぼ垂直に延在している、請求項5〜請求項7のいずれか1項に記載された光源装置。
【請求項9】 前記出射面に沿って、出力指向特性を修正するための多数の突起列を備えた光制御部材が配置されている、請求項5〜請求項8のいずれか1項に記載された光源装置。
【請求項10】 前記突起列が、前記入射端面にほぼ平行に延在している、請求項9に記載された光源装置。
【請求項11】 前記突起列が、前記入射端面にほぼ垂直に延在している、請求項9に記載された光源装置。
【請求項12】 前記出射面が乗る延在面に対して垂直な垂面に対する前記第1面Si 及び前記第2面Ti の傾斜角を夫々α及びβとした時、0度≦α≦10度、且つ、30度≦β≦60度である、請求項1〜請求項4のいずれか1項に記載された導光素子。
【請求項13】 前記出射面が乗る延在面に対して垂直な垂面に対する前記第1面Si 及び前記第2面Ti の傾斜角を夫々α及びβとした時、0度≦α≦10度、且つ、30度≦β≦60度である、請求項5〜請求項11のいずれか1項に記載された面光源装置。
[Claims]
1. A light guide element comprising an exit surface for emitting light, a major surface for providing a back surface, and an incident end surface for introducing light;
A large number of projection rows P1, P2, P3 ... For changing the direction of light traveling are provided on the back surface.
Each projection row Pi (i = 1,2,3 ...) extends substantially parallel to the incident end face, and the first surface Si and the incident end face that are relatively close and steep with respect to the incident end face. Includes a second surface Ti that is relatively far and sloping with respect to
The second surface Ti has an internal reflection function for generating light toward the exit surface and a leakage function for generating leakage light from the projection row Pi.
The protrusion row Pj (j = 2,3 ...) collects the light leaked from the second surface Tj-1 of the preceding protrusion row Pj-1 through the first surface Sj and is inside the second surface Tj. The light guide elements are arranged so as to cooperate in a chain to be incident.
2. The light guide element according to claim 1, wherein each projection row Pi (i = 1,2,3 ...) Has a tip portion having a non-sharp cross-sectional shape.
3. Claim 1 or claim 3, wherein the light guide plate and a sheet-like member coupled to the light guide plate are included, and the sheet-like member includes a large number of projection rows P1, P2, P3 ... The light guide element according to claim 2.
4. The exit surface comprises a large number of projections for modifying the output directional characteristics, the projections extending substantially perpendicular to the incident end face, claims 1 to 3. The light guide element according to any one item.
5. A light source device including a primary light source and an optical element for converting the light supplied from the primary light source into directional illumination light;
The optical element comprises an exit surface for emitting light, a major surface providing a back surface, and an incident end surface for introducing light.
A large number of projection rows P1, P2, P3 ... For changing the direction of light traveling are provided on the back surface.
Each projection row Pi (i = 1,2,3 ...) extends substantially parallel to the incident end face, and the first surface Si and the incident end face that are relatively close and steep with respect to the incident end face. Includes a second surface Ti that is relatively far and sloping with respect to
The second surface Ti has an internal reflection function for generating light toward the exit surface and a leakage function for generating leakage light from the projection row Pi.
The protrusion row Pj (j = 2,3 ...) collects the light leaked from the second surface Tj-1 of the preceding protrusion row Pj-1 through the first surface Sj and is inside the second surface Tj. The light source device, which is arranged so as to cooperate in a chain to be incident.
6. The light source device according to claim 5, wherein each protrusion Pi (i = 1,2,3 ...) Has a tip portion having a non-sharp cross-sectional shape.
7. Claim 5 or claim 7, wherein the light guide plate and a sheet-like member coupled to the light guide plate are included, and the sheet-like member includes a large number of projection rows P1, P2, P3 ... The light source device according to claim 6.
8. The exit surface comprises a large number of projections for modifying the output directional characteristics, the projections extending substantially perpendicular to the incident end face, claims 5-7. The light source device according to any one item.
9. The aspect of any one of claims 5 to 8, wherein an optical control member having a large number of projection rows for modifying the output directivity is arranged along the exit surface. Light source device.
10. The light source device according to claim 9, wherein the projection row extends substantially parallel to the incident end face.
11. The light source device according to claim 9, wherein the projection row extends substantially perpendicular to the incident end face.
When 12. was the exit surface extending surface and each alpha angle of inclination of the first surface Si and the second surface Ti for perpendicular vertical plane with respect to β ride, 0 ° ≦ alpha ≦ 10 The light guide element according to any one of claims 1 to 4, wherein the degree and 30 degrees ≤ β ≤ 60 degrees.
13. When the inclination angles of the first surface Si and the second surface Ti with respect to the perpendicular surface perpendicular to the extending surface on which the exit surface rides are α and β, respectively, 0 degree ≤ α ≤ 10 The surface light source device according to any one of claims 5 to 11, wherein the degree and 30 degrees ≤ β ≤ 60 degrees.

それら突起列は、入射端面にほぼ平行に延在して良い。この場合、入射端面に垂直な面内に関して、出力指向特性が修正される。またそれら突起列は、入射端面にほぼ垂直に延在して良い。この場合、入射端面に平行な面内に関して、出力指向特性が修正される。なお、導光素子の出射面が乗る延在面に対して垂直な垂面に対する第1面Si 及び第2面Ti の傾斜角については、前者をα及び後者をβとして、0度≦α≦10度、且つ、30度≦β≦60度であることが望ましい。 The projections may extend substantially parallel to the incident end face. In this case, the output directivity is corrected in the plane perpendicular to the incident end face. Further, these projection rows may extend substantially perpendicular to the incident end face. In this case, the output directivity is corrected in the plane parallel to the incident end face. Regarding the inclination angles of the first surface Si and the second surface Ti with respect to the perpendicular surface perpendicular to the extending surface on which the exit surface of the light guide element rides, the former is α and the latter is β, and 0 degrees ≤ α ≤ It is desirable that the temperature is 10 degrees and 30 degrees ≤ β ≤ 60 degrees.

JP10221299A 1999-04-09 1999-04-09 Light guide element and light source device Expired - Fee Related JP4331313B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10221299A JP4331313B2 (en) 1999-04-09 1999-04-09 Light guide element and light source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10221299A JP4331313B2 (en) 1999-04-09 1999-04-09 Light guide element and light source device

Publications (3)

Publication Number Publication Date
JP2000294022A JP2000294022A (en) 2000-10-20
JP2000294022A5 true JP2000294022A5 (en) 2006-05-25
JP4331313B2 JP4331313B2 (en) 2009-09-16

Family

ID=14321365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10221299A Expired - Fee Related JP4331313B2 (en) 1999-04-09 1999-04-09 Light guide element and light source device

Country Status (1)

Country Link
JP (1) JP4331313B2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002303866A (en) * 2001-04-09 2002-10-18 Nitto Denko Corp Reflective liquid crystal display device
JP3942538B2 (en) * 2002-12-16 2007-07-11 富士通化成株式会社 Surface illumination device and liquid crystal display device
US7478942B2 (en) 2003-01-23 2009-01-20 Samsung Electronics Co., Ltd. Light guide plate with light reflection pattern
JP2005099469A (en) * 2003-09-25 2005-04-14 Seiko Epson Corp Liquid crystal device and electronic equipment using the same
JP4615393B2 (en) * 2005-08-15 2011-01-19 株式会社フジクラ Manufacturing method of light guide for strip light source
JP4694985B2 (en) * 2006-02-13 2011-06-08 セイコーインスツル株式会社 Surface light emitting device and display device
KR101232059B1 (en) * 2006-07-27 2013-02-12 삼성디스플레이 주식회사 Dual prism sheet and backlight assembly having the same
JP4717835B2 (en) * 2007-01-11 2011-07-06 キヤノン株式会社 Illumination device and imaging device
JP4735852B2 (en) * 2007-04-05 2011-07-27 市光工業株式会社 Vehicle headlamp
JP5264313B2 (en) * 2008-06-18 2013-08-14 帝人株式会社 Polarized light guide plate assembly and liquid crystal display device
KR101073961B1 (en) * 2009-05-28 2011-10-17 이만혁 A Lighting Fixtures with Light Emitting Diode
US8251561B2 (en) 2009-06-05 2012-08-28 Sharp Kabushiki Kaisha Light collimating lightguide
JP5189129B2 (en) * 2010-04-09 2013-04-24 株式会社フジクラ Strip light source, strip light source including strip light guide, strip illumination device including strip light source
JP2014056848A (en) * 2013-12-25 2014-03-27 Mitsubishi Electric Corp Lighting device and image sensor using the same
EP3671020A1 (en) * 2018-12-18 2020-06-24 Ningbo Geely Automobile Research & Development Co. Ltd. A vehicle lighting system

Similar Documents

Publication Publication Date Title
JP2000294022A5 (en)
JP2002245823A5 (en)
JP5540018B2 (en) Light mixing optical device and light mixing system
JP4142234B2 (en) Surface light source device and liquid crystal display device
KR100729886B1 (en) Light emitting panel assemblies
JP4617040B2 (en) Light panel
CN101994989B (en) Optical lens and illumination fixture using the same
TWI337677B (en) Backlight module and light guide plate used in the same
JP5006914B2 (en) Light guide plate
TW201120299A (en) Light guide microstructure plate, light guiding method, and application on window structure
TW200523104A (en) Methods of making a pattern of optical element shapes on a roll for use in making optical elements on or in substrates
TW200622443A (en) Planar light source device and display device
AUPQ431399A0 (en) Light emitting diode reflector
WO2007072263A3 (en) Backlight arrangement
TWM294655U (en) Light-adjusting structure of light guide
JP2003329808A5 (en)
TW200607199A (en) Lens-attached light-emitting element
DE50002848D1 (en) LAMP
CA2374023A1 (en) Light
JP2011146386A (en) Optical part for led array
JP2004152496A (en) Light guide plate
CA2325999A1 (en) Reflector for surgical light apparatus
JP6604589B2 (en) lighting equipment
JP2004111189A (en) Light guide plate device
JP2004055168A (en) Led lamp module