WO2012063758A1 - Dispositif d'éclairage et dispositif d'affichage - Google Patents

Dispositif d'éclairage et dispositif d'affichage Download PDF

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Publication number
WO2012063758A1
WO2012063758A1 PCT/JP2011/075546 JP2011075546W WO2012063758A1 WO 2012063758 A1 WO2012063758 A1 WO 2012063758A1 JP 2011075546 W JP2011075546 W JP 2011075546W WO 2012063758 A1 WO2012063758 A1 WO 2012063758A1
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WO
WIPO (PCT)
Prior art keywords
light
lens member
light source
led
lighting device
Prior art date
Application number
PCT/JP2011/075546
Other languages
English (en)
Japanese (ja)
Inventor
張　志芳
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2012063758A1 publication Critical patent/WO2012063758A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs

Definitions

  • the present invention relates to an illuminating device and a display device, and more particularly to an illuminating device and a display device including a light source and a lens member that increases a spread angle of light emitted from the light source.
  • an illumination device including a plurality of light sources is known (see, for example, Patent Document 1).
  • Patent Document 1 discloses a direct-type planar light source device (illumination device) including a plurality of light emitting elements (light sources) and a diffusion plate (optical member) having a function of diffusing light from the light emitting elements.
  • a lens lens that increases the spread angle of the light emitted from the light emitting element is provided on the light emitting side (upper side) of the light emitting element.
  • the lens is formed integrally with the light emitting element, and the light emitting element assembly is configured by the light emitting element and the lens.
  • the spread angle of the light emitted from the light emitting element (light source) is increased by the lens, and the light emitting element and the diffusion plate (optical member) By ensuring a sufficient distance between them, the light uniformly reaches the diffuser plate and the display panel (illuminated member) disposed above the diffuser plate, and luminance unevenness of the display panel is suppressed.
  • planar light source device (illumination device) as described in Patent Document 1 has a problem that when the planar light source device is thinned, uneven luminance occurs on the display panel.
  • light emitted obliquely upward (obliquely forward) from the light emitting element has a widening angle by the lens, and light emitted from a plurality of light emitting elements is mixed.
  • the light emitted obliquely upward from the light emitting element reaches the diffusion plate and the display panel in a uniform state.
  • the light emitted from the light emitting element in the upward direction is hardly spread by the lens.
  • a sufficient distance between the light emitting element and the diffusion plate cannot be secured, so the light emitted from the light emitting element directly above is an optical path (distance from the light emitting element to the diffusion plate). Becomes shorter and is not sufficiently uniformized. For this reason, the light emitted directly upward from the light emitting element reaches the diffusion plate and the display panel in a state where the light is not sufficiently uniformized.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illuminating device and a display device capable of suppressing occurrence of luminance unevenness in an illuminated member. It is to be.
  • an illumination device is disposed between a light source, an optical member having a function of diffusing light from the light source, the light source and the optical member, and is emitted from the light source.
  • the lens member for increasing the spread angle of the light is provided, and a traveling direction changing section for diffusing or reflecting the light and changing the traveling direction of the light from the light source is provided in a portion of the lens member directly above the light source. It has been.
  • the light emitted from the plurality of light sources is mixed by providing the lens member that increases the spread angle of the light emitted from the light sources.
  • the lens member that increases the spread angle of the light emitted from the light sources.
  • the traveling direction changing unit that diffuses or reflects light to the portion of the lens member directly above the light source and changes the traveling direction of the light from the light source.
  • the traveling direction of the light emitted from the light source directly above can be changed to a direction other than directly above, the light emitted from the light source directly above is used as the light source of the optical member and the illuminated member. It is possible to reach parts other than just above. That is, it is possible to suppress the light emitted right above from the light source from reaching the optical member and the illuminated member in a state where the light is not sufficiently uniformized.
  • it is possible to suppress the luminance of the portion of the illuminated member immediately above the light source from being increased it is possible to suppress the occurrence of luminance unevenness in the illuminated member.
  • the lighting device preferably further includes a mounting substrate to which a light source is attached, and the lens member is attached to the mounting substrate or the light source. If comprised in this way, after attaching a lens member to a mounting board
  • the advancing direction changing portion includes a concavo-convex shape portion that is formed on the surface of the lens member and diffuses light. If comprised in this way, since the advancing direction of the light radiate
  • the traveling direction changing unit includes a reflective layer that is provided on the surface of the lens member and reflects light. If comprised in this way, since the light radiate
  • the reflective layer is preferably formed of a resin. If comprised in this way, the advancing direction change part can be easily provided in a lens member.
  • the surface on the illuminated member side of the lens member may be formed in a substantially convex shape, and the central portion of the surface on the illuminated member side may be formed in a concave shape.
  • the light source includes a light emitting diode. If comprised in this way, a light source and an illuminating device can be reduced in thickness, weight, and power consumption easily.
  • a display device includes the illumination device configured as described above and a display panel illuminated by the illumination device. If comprised in this way, the display apparatus which can suppress that a brightness nonuniformity generate
  • the present invention it is possible to easily obtain an illuminating device and a display device capable of suppressing occurrence of luminance unevenness in a member to be illuminated.
  • FIG. 1 is a cross-sectional view illustrating a structure of a liquid crystal display device according to a first embodiment of the present invention. It is the expanded sectional view which showed the structure of LED periphery of FIG. It is an expanded sectional view for demonstrating the advancing direction of the light radiate
  • the liquid crystal display device 1 constitutes, for example, a liquid crystal television receiver (not shown). As shown in FIG. 1, the liquid crystal display device 1 includes a liquid crystal display panel 2 and a backlight device 3 that is disposed on the lower side (back side) of the liquid crystal display panel 2 and illuminates the liquid crystal display panel 2.
  • the liquid crystal display device 1 is an example of the “display device” in the present invention
  • the liquid crystal display panel 2 is an example of the “illuminated member” and the “display panel” in the present invention.
  • the backlight device 3 is an example of the “illumination device” in the present invention.
  • the liquid crystal display panel 2 includes two glass substrates that sandwich a liquid crystal layer (not shown).
  • the liquid crystal display panel 2 functions as a display panel when illuminated by the backlight device 3.
  • the backlight device 3 is a direct type backlight device, and covers a plurality of LEDs (Light Emitting Diodes) 4, a mounting substrate 5 to which the LEDs 4 are attached, and a light emitting side (upper side) of the LEDs 4.
  • a plurality of lens members 6 arranged, a reflecting member 7 arranged on the mounting substrate 5, an optical member group 8 arranged between the LED 4 and the liquid crystal display panel 2, the LED 4 and the reflecting member 7, and the like are accommodated.
  • the backlight chassis 9 is used.
  • the LED 4 is an example of the “light source” and “light emitting diode” in the present invention.
  • the plurality of LEDs 4 are arranged in the longitudinal direction (A direction) and the short direction (perpendicular to the paper surface) of the liquid crystal display panel 2. Further, the light emitted from the LED 4 is emitted at a predetermined spread angle as will be described later. Further, the plurality of LEDs 4 are arranged so that light emitted from adjacent LEDs 4 is mixed.
  • the LED 4 is attached to the mounting substrate 5 using a solder layer (not shown) or the like.
  • LED4 may be comprised by the sealing resin etc. which seal a light emitting element part (not shown) and a light emitting element part.
  • the lens member 6 is disposed between the LED 4 and the optical member group 8 (see FIG. 1). As will be described later, the lens member 6 has a function of increasing the spread angle of the light emitted from the LED 4.
  • the lens member 6 is formed of a material (for example, resin or glass) that transmits light emitted from the LED 4.
  • the lens member 6 includes a lens portion 6a and a plurality of (for example, three) leg portions 6b.
  • the lens portion 6a includes a light emitting surface (upper surface) 6c and a lower surface 6d formed on the side opposite to the light emitting surface 6c.
  • the light emitting surface 6c is an example of the “surface” and “surface of the lens member on the illuminated member side” in the present invention.
  • the light exit surface 6c is formed in a substantially convex shape, and is formed so that light emitted from the lens member 6 has a desired light distribution pattern.
  • the central portion of the light emitting surface 6c (the portion directly above the LED 4) is formed in a concave shape.
  • the center part of the light-projection surface 6c does not need to be formed in concave shape.
  • a concavo-convex shape portion 6e formed with a plurality of fine concavo-convex portions is formed in the central portion of the light emitting surface 6c.
  • the light that passes through (passes through) the central portion (uneven shape portion 6e) of the light emitting surface 6c is diffused and the traveling direction is changed.
  • corrugated shaped part 6e is an example of the "advancing direction change part" of this invention.
  • the uneven portion 6e is formed by, for example, sandblasting.
  • corrugated shaped part 6e may be formed not by physical processing like sandblasting but by chemical processing such as frost processing.
  • a recess 6f is formed in the central portion of the lower surface 6d (the portion directly above the LED 4). As a result, as will be described later, the traveling direction of the light emitted obliquely upward (obliquely forward) from the LED 4 is further changed to the outside, and the light spreading angle is increased.
  • the leg portion 6b is attached to a predetermined position of the mounting substrate 5 using, for example, an adhesive (not shown).
  • the light P1 emitted obliquely upward (obliquely forward) from the LED 4 is refracted outward by the recess 6f and further refracted outward by the light exit surface 6c. That is, the spread angle of the light P1 emitted obliquely upward from the LED 4 is further increased by the lens member 6.
  • the light P2 emitted from the LED 4 substantially directly upward is diffused by the concavo-convex shape portion 6e, and the traveling direction is changed. That is, the light P2 that is transmitted (passed) through the center portion (uneven shape portion 6e) of the lens member 6 is diffused (uniformized) and is applied to a portion of the optical member group 8 (see FIG. 1) other than directly above the LED 4. Also reach.
  • the lens member 6 functions as a lens for lowering (widening) the directivity of the light emitted from the LED 4.
  • the light distribution pattern (directional characteristic) of the light emitted from the lens member 6 is as shown in FIG. Specifically, the luminous intensity of the light emitted from the lens member 6 is the highest in the direction inclined about 65 ⁇ 15 degrees with respect to the upward direction. Further, the relative luminous intensity of the light emitted from the lens member 6 directly upward is, for example, about 0.09. That is, the light in the direction inclined by about 65 ⁇ 15 degrees with respect to the upward direction is the principal ray.
  • the angle (0 ° to 90 °) in FIG. 4 and FIG. 5 to be described later indicates the light emission angle with respect to the upward direction.
  • the luminous intensity of the principal ray (light in a direction inclined by about 65 ⁇ 15 degrees with respect to the directly upward direction) is higher than the luminous intensity of light in other directions (for example, light emitted in the upward direction), Since the principal ray can sufficiently secure the optical path (distance from the LED 4 to the optical member group 8), it sufficiently spreads (is made uniform) before reaching the optical member group 8. For this reason, the chief rays reach the optical member group 8 and the liquid crystal display panel 2 in a uniform state. That is, the luminance of the portion of the liquid crystal display panel 2 on the extension line of the principal ray does not become higher than other portions (the luminance unevenness occurs in the liquid crystal display panel 2).
  • the luminous intensity of the light emitted from the lens member is as shown in FIG. Specifically, the relative luminous intensity of the light emitted directly upward from the lens member is, for example, about 0.23. For this reason, the brightness of the portion of the liquid crystal display panel 2 directly above the LED 4 is increased, and uneven brightness occurs in the liquid crystal display panel 2.
  • the chief ray is obtained when the uneven portion 6 e is formed (in the case of FIG. 4) and when the uneven portion 6 e is not formed (in the case of FIG. 5).
  • the luminous intensity (light in a direction inclined by approximately 65 ⁇ 15 degrees with respect to the upward direction) does not change. That is, the concavo-convex shape portion 6e is formed in a region of the lens member 6e that does not affect the progress of the principal ray.
  • the mounting substrate 5 is formed in an elongated shape extending in the A direction, and a plurality of mounting substrates 5 are arranged in a direction perpendicular to the paper surface.
  • the mounting substrate 5 may be formed so as to spread in the direction A and in a direction perpendicular to the paper surface, or all the LEDs 4 may be attached to one mounting substrate 5.
  • the mounting substrate 5 may be fixed to the backlight chassis 9 using a fixing member (not shown) or the like (not shown).
  • the reflection member 7 has a function of reflecting light from the lens member 6 (LED 4) and light emitted from the lens member 6 (LED 4) and reflected by the optical member group 8 to the upper side (the liquid crystal display panel 2 side).
  • an opening 7a is formed in a portion of the reflecting member 7 corresponding to the lens member 6.
  • the opening 7 a has an inner shape (inner diameter) that is slightly larger than or equal to the outer shape (diameter) of the lens member 6.
  • the optical member group 8 includes a diffusion sheet (or diffusion plate) 8a having a function of diffusing light from the lens member 6 (LED 4), and a prism sheet 8b for condensing the light in the forward direction. It is constituted by.
  • the diffusion sheet 8a is an example of the “optical member” in the present invention.
  • the backlight chassis 9 is made of, for example, a metal plate.
  • the lens member 6 that increases the spread angle of the light P1 emitted from the LEDs 4
  • the light P1 emitted from the plurality of LEDs 4 is mixed. Therefore, it can suppress that the brightness
  • the light is diffused to the central portion of the light emitting surface 6c of the lens member 6 (the portion directly above the LED 4), and the traveling direction of the light P2 from the LED 4 is changed.
  • An uneven shape portion 6e is provided.
  • the lens member 6 is attached to the mounting substrate 5 as described above. Thereby, it is not necessary to align the LED 4 and the lens member 6 (uneven shape portion 6e) after the lens member 6 is attached to the mounting substrate 5, so that the assembly process of the backlight device 3 becomes complicated. Can be suppressed. Moreover, it can suppress that position shift generate
  • the light source (LED 4) and the backlight device 3 can be easily reduced in thickness, weight, and power consumption. .
  • the lens member 106 includes a lens portion 106a and a plurality of (for example, three) leg portions 6b.
  • the lens portion 106a includes a light emitting surface (upper surface) 106c and a lower surface 6d.
  • the light emitting surface 106c is an example of the “surface” and “surface of the lens member on the illuminated member side” in the present invention.
  • the light exit surface 106c is not formed with fine unevenness (unevenness-shaped portion 6e).
  • the reflective layer 110 is formed on the central portion (the portion directly above the LED 4) of the light emitting surface 106c.
  • the light P ⁇ b> 102 emitted from the LED 4 substantially directly upward and reaching the reflective layer 110 (the central portion of the light emitting surface 106 c) is reflected by the reflective layer 110. That is, the traveling direction of the light P102 is changed from the upper direction to the lower direction.
  • the reflective layer 110 is an example of the “traveling direction changing unit” in the present invention.
  • the light P102 reflected by the reflective layer 110 is reflected or refracted on the surface of the mounting substrate 5 or the surface of the lens member 106, and reaches the optical member group 8 and the liquid crystal display panel 2 in a uniform state. .
  • the reflective layer 110 is formed, for example, by applying a white resin (white paint or the like) to the surface (light emitting surface 106c) of the lens member 106 and curing it.
  • a white resin white paint or the like
  • the reflective layer 110 may be formed of a metal plating layer, a metal plate, or the like.
  • the remaining structure of the second embodiment is the same as that of the first embodiment.
  • the reflection is made to reflect the light to the central portion of the light emitting surface 106c of the lens member 106 (the portion directly above the LED 4) and change the traveling direction of the light P102 from the LED 4.
  • Layer 110 is provided. Thereby, since the light P102 emitted from the LED 4 can be reflected by the reflective layer 110, it is possible to easily suppress the luminance of the portion of the liquid crystal display panel 2 just above the LED 4 from increasing. As a result, the occurrence of luminance unevenness in the liquid crystal display panel 2 can be suppressed.
  • the reflective layer 110 can be easily provided on the lens member 106 by forming the reflective layer 110 from a resin.
  • the reflective layer 210 is provided on the central portion of the light emitting surface 106c of the lens member 206. Instead, it is provided on the bottom surface of the recess 6f (the surface of the recess 6f directly above the LED 4).
  • the reflective layer 210 is an example of the “traveling direction changing unit” in the present invention.
  • the display device is applied to a liquid crystal display device.
  • the present invention is not limited thereto, and may be applied to a display device other than the liquid crystal display device.
  • the backlight device has been described as an example of the lighting device.
  • the present invention is not limited to this and can be applied to lighting devices other than the backlight device.
  • an LED is used as a light source.
  • the present invention is not limited to this, and a light source other than a semiconductor light emitting element may be used.
  • corrugated shaped part was shown about the example which formed in the light-projection surface of a lens member, this invention is not limited to this,
  • corrugated shaped part is formed in the bottom face of the recessed part of a lens member. May be. Moreover, you may form an uneven
  • the lens member 306 may be attached to the mounting substrate 305 without using an adhesive or the like.
  • the engaging portion 306 c is formed in the leg portion 306 b of the lens member 306, and the engaging hole 305 a is formed in the portion of the mounting substrate 305 corresponding to the leg portion 306 b of the lens member 306.
  • the lens member 306 may be attached to the mounting substrate 305 by inserting the leg portion 306b into the engagement hole 305a and engaging the engagement portion 306c of the leg portion 306b with the engagement hole 305a.
  • the lens member 406 is provided integrally with the LED 404, and the lens member 406 is provided with an uneven portion 406a (or a reflective layer). May be.
  • the concavo-convex shape portion 406a may be formed in a portion of the lens member 406 directly above the LED element portion (light emitting element portion) 404a.
  • corrugated shaped part 406a is an example of the "advancing direction change part" of this invention
  • the LED element part 404a is an example of the "light source” and "light emitting diode” of this invention.
  • Liquid crystal display device display device
  • Liquid crystal display panel illuminationted member, display panel
  • Backlight device lighting device
  • LED light source, light emitting diode
  • Mounting substrate 6 106, 206, 306, 406 Lens member 6c, 106c
  • Light exit surface surface, surface of the lens member on the illuminated member side
  • 406a Uneven shape part (travel direction changing part) 8a
  • Diffusion sheet optical member
  • Reflection layer (travel direction changing part)
  • LED element light source, light emitting diode

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un dispositif d'éclairage permettant d'empêcher l'apparition de variations de luminosité d'éléments éclairés. Le présent dispositif de rétro-éclairage (dispositif d'éclairage) (3) est doté de DEL (4), d'une feuille de diffusion (8a) comprenant une fonction de diffusion de la lumière depuis les DEL et d'éléments de lentille (6) disposés entre les DEL et la feuille de diffusion pour augmenter l'angle de diffusion de la lumière émise par les DEL. Dans la partie intermédiaire (partie située directement au-dessus des DEL) d'une surface de sortie de lumière (6c) de l'élément de lentille se trouve une partie en saillie et évidée (6e) qui diffuse la lumière et modifie la direction d'avancement de la lumière depuis les DEL.
PCT/JP2011/075546 2010-11-12 2011-11-07 Dispositif d'éclairage et dispositif d'affichage WO2012063758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010253485 2010-11-12
JP2010-253485 2010-11-12

Publications (1)

Publication Number Publication Date
WO2012063758A1 true WO2012063758A1 (fr) 2012-05-18

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WO (1) WO2012063758A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175906A (ja) * 2009-01-30 2010-08-12 Roland Corp 調律装置の表示器
JP2014007093A (ja) * 2012-06-26 2014-01-16 Sharp Corp 光源装置およびそれを備えた投光装置
CN104566202A (zh) * 2013-10-11 2015-04-29 鸿富锦精密工业（深圳）有限公司 透镜以及应用该透镜的光源模组
CN106051515A (zh) * 2016-05-30 2016-10-26 众普森科技（株洲）有限公司 一种配光单元及配光组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005044661A (ja) * 2003-07-23 2005-02-17 Advanced Display Inc 面状光源装置および該装置を用いる表示装置
JP2010003941A (ja) * 2008-06-23 2010-01-07 Mitsubishi Electric Corp Ｌｅｄ光源、面状光源装置および表示装置
JP2010097138A (ja) * 2008-10-20 2010-04-30 Sumitomo Electric Ind Ltd レンズ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005044661A (ja) * 2003-07-23 2005-02-17 Advanced Display Inc 面状光源装置および該装置を用いる表示装置
JP2010003941A (ja) * 2008-06-23 2010-01-07 Mitsubishi Electric Corp Ｌｅｄ光源、面状光源装置および表示装置
JP2010097138A (ja) * 2008-10-20 2010-04-30 Sumitomo Electric Ind Ltd レンズ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175906A (ja) * 2009-01-30 2010-08-12 Roland Corp 調律装置の表示器
JP2014007093A (ja) * 2012-06-26 2014-01-16 Sharp Corp 光源装置およびそれを備えた投光装置
CN104566202A (zh) * 2013-10-11 2015-04-29 鸿富锦精密工业（深圳）有限公司 透镜以及应用该透镜的光源模组
CN106051515A (zh) * 2016-05-30 2016-10-26 众普森科技（株洲）有限公司 一种配光单元及配光组件

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