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WO2017057051A1 - Lentille de diffusion, appareil d'émission de lumière et moule de moulage par injection pour une lentille de diffusion - Google Patents

Lentille de diffusion, appareil d'émission de lumière et moule de moulage par injection pour une lentille de diffusion Download PDF

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Publication number
WO2017057051A1
WO2017057051A1 PCT/JP2016/077424 JP2016077424W WO2017057051A1 WO 2017057051 A1 WO2017057051 A1 WO 2017057051A1 JP 2016077424 W JP2016077424 W JP 2016077424W WO 2017057051 A1 WO2017057051 A1 WO 2017057051A1
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WO
WIPO (PCT)
Prior art keywords
light
back surface
center
lens
emitting device
Prior art date
Application number
PCT/JP2016/077424
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English (en)
Japanese (ja)
Inventor
松本　浩一
北村　英二
雄一 田原
Original Assignee
ＩＰ Ｌａｂｏ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 ＩＰ Ｌａｂｏ株式会社 filed Critical ＩＰ Ｌａｂｏ株式会社
Publication of WO2017057051A1 publication Critical patent/WO2017057051A1/fr

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Classifications

    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements

Definitions

  • the present invention relates to a diffusion lens for diffusing light such as a light emitting diode (LED) used for a backlight of an image display device, a light emitting device including the diffusion lens, and a mold used for injection molding of the diffusion lens.
  • a diffusion lens for diffusing light such as a light emitting diode (LED) used for a backlight of an image display device, a light emitting device including the diffusion lens, and a mold used for injection molding of the diffusion lens.
  • LED light emitting diode
  • a light emitting element such as an LED has a characteristic that the amount of light is concentrated in the vicinity of the optical axis.
  • an LED used for a backlight of an image display device such as a liquid crystal television diffuses light emission in order to suppress luminance unevenness.
  • a diffusing lens is used.
  • a lens of a light emitting device described in Patent Document 1 is conventionally known.
  • the lens described in this document diffuses the light emission of the LED arranged on the back side, and is transmitted at a slant with respect to a plane whose normal is the optical axis at the center of the front surface (outgoing surface).
  • a first region in which a refracting surface and a steep reflecting surface are alternately formed in a staircase shape is provided, and a second region formed by a continuous curved surface is provided on the outer periphery of the first region. Yes.
  • a part of the light beam is reflected by the reflecting surface, thereby suppressing the occurrence of luminance unevenness due to the concentrated emitted light having a high intensity near the optical axis.
  • the present invention has been made in view of the above circumstances, and has a high degree of freedom in designing the surface shape, a diffusing lens that can be easily designed and molded, and can suppress uneven brightness, and a light-emitting device including the diffusing lens. It is an object to provide a mold used for injection molding of the diffusion lens.
  • a diffusing lens according to the present invention has a circular shape in a plan view or a rectangular shape in a plan view, and has a surface and a center axis passing through the center of the circle or a centroid axis passing through the center of gravity of the rectangle.
  • Each of the back surfaces is formed substantially symmetrically, and a concave incident portion into which light from a light source arranged so that the optical axis coincides with the central axis or the center of gravity axis is provided at the center of the back surface.
  • the back surface is formed in a tapered shape inclined upward at a predetermined angle when viewed from the incident portion side.
  • a light-emitting device includes a light source and a diffusion lens that diffuses light emitted from the light source, and the diffusion lens has a circular shape in a plan view or a rectangular shape in a plan view, and a center that passes through the center of the circle.
  • Each of the front surface and the back surface is formed substantially symmetrically with respect to the axis of gravity or the center of gravity of the rectangle passing through the center of gravity of the rectangle, and the center axis or the center of gravity axis and the optical axis are arranged at the center of the back surface.
  • a concave incident portion for receiving light from the light source is provided, and the back surface is formed in a tapered shape inclined upward at a predetermined angle when viewed from the incident portion side.
  • the back surface of the diffusing lens is formed in a tapered shape that is inclined upward at a predetermined angle when viewed from the incident portion side, so that the light source is concentrated near the optical axis.
  • the peak light quantity near the optical axis is reduced, and the light quantity away from the optical axis is increased correspondingly, thereby suppressing uneven brightness.
  • this effect can be obtained simply by forming the back surface into a tapered shape at a predetermined angle without processing the surface of the diffusion lens into a complicated shape.
  • the degree of freedom is high, design and molding are easy, and luminance unevenness can be suppressed.
  • the back surface is formed in a tapered shape, the heat of the light source that tends to be scattered near the incident portion can be easily dissipated from the lower space of the back surface, and the heat dissipation effect can be improved.
  • the heat radiation effect is further enhanced by being placed on the substrate and forming a heat radiation pattern on the side of the light source on the substrate, or by placing the light source on the substrate via the heat radiation pattern. it can.
  • the predetermined angle is preferably 2.5 degrees or more and 6 degrees or less with respect to a plane having a central axis as a normal line, or 4 degrees or more and 6 degrees or less with respect to a plane having a normal axis as a center of gravity. Accordingly, the luminance unevenness can be effectively suppressed by greatly reducing the peak light quantity.
  • the diffusing lens is a plane whose normal is the central axis or the center of gravity axis and passes through the height of the upper edge of the back surface
  • the surface side block constituting the upper side of the divided surface When the back side block constituting the lower side is joined, the back side may be completely processed into a taper shape only by the back side block, so that the processing becomes easy.
  • an air layer and an adhesive layer are formed by the joint portion between the front surface side block and the back surface side block, further light diffusion can be achieved by this joint portion.
  • the diffusing lens has a rectangular shape in plan view, it is desirable that the incident portion has a rectangular tube concave shape, so that light diffusion can be spread to the four corners of the rectangular shape of the diffusing lens.
  • a diffusion lens injection molding die is the above-described diffusion lens injection molding die, which is provided in a cavity and is provided in a surface forming portion that forms the surface of the diffusion lens.
  • a large-diameter resin reservoir is provided in a part of the runner.
  • the diffusing lens can have a high degree of freedom in designing the surface shape, can be easily designed and molded, and can suppress uneven brightness.
  • FIG. 2 is an explanatory diagram illustrating a path of emitted light from an LED in the light emitting device of FIG. 1.
  • 1A is an explanatory diagram showing the illuminance distribution on the irradiated surface when the tilt angle of the back surface of the lens is 0 degree, and FIG.
  • FIG. 1B is a diagram when the tilt angle of the back surface of the lens is 4.5 degrees. It is explanatory drawing which shows the illumination intensity distribution in the irradiation surface.
  • FIG. 2 is an explanatory diagram showing the light distribution on the irradiated surface when the inclination angle of the back surface of the lens is 0 degree and 3 degrees for the light emitting device of FIG. 1. It is explanatory drawing which illustrates the path
  • FIG. 9 is an explanatory diagram showing a light distribution on the irradiated surface when the inclination angle of the back surface of the lens is 0 degree and 3 degrees for the light emitting device of FIG. 8.
  • FIG. 11 is an explanatory diagram showing a light distribution on the irradiated surface when the inclination angle of the rear surface of the lens is 0 degree and 3 degrees for the light emitting device of FIG. 10. It is sectional drawing which shows further another light-emitting device based on the form for inventing, Comprising: A heat-radiation pattern is provided on the board
  • FIG. 14 It is sectional drawing which shows further another light-emitting device which concerns on the form for implementing invention, Comprising: LED is mounted on the board
  • FIG. 14 It is explanatory drawing which shows the change of the peak light quantity when changing the inclination-angle of the back surface of a lens.
  • FIG. 15 is a cross-sectional view illustrating still another light-emitting device according to an embodiment for carrying out the invention, in which an incident portion of a lens of the light-emitting device in FIG. 14 exhibits a rectangular tube concave shape.
  • FIG. 1 shows a light emitting device provided with a diffusion lens according to this embodiment.
  • the light emitting device 1 can be used for a backlight of an image display device of a liquid crystal television, and includes an LED 2, a substrate 3, and a lens 4.
  • the LED 2 is driven by a power supply (not shown) and emits white light.
  • the substrate 3 has a rectangular shape in plan view, and the upper surface 5 is provided with a reflective coating, and a plurality of LEDs 2 are provided along the longitudinal direction.
  • the LED 2 is fixed to the substrate 3 so that its optical axis is parallel to the normal line of the substrate 3, and emits light upward (toward the side opposite to the substrate 3).
  • the lens 4 is integrally formed of PMMA resin having a transmittance of 95% or more and a refractive index of about 1.5, and has a circular shape in plan view as shown in FIG. As the central axis X 1 through this circular center (center position in plan view) matches the LED2 of the optical axis, the lens 4 is provided above the LED2.
  • Surface 6 of the lens 4 exhibits a domed convex portion 7 is formed on the top, the shape of the surface 6 at any cross section including the central axis X 1 is substantially symmetrical with respect to the central axis X 1.
  • bullet-shaped concave entrance portion 9 which light is incident is provided from the LED2, the shape of the incident portion 9 at an arbitrary section including the central axis X 1, the central axis X 1 Is substantially symmetrical.
  • the rear surface 8, as viewed from the side of the entrance portion 9 is formed at a predetermined angle ⁇ tapered inclined upward (see FIG. 1), the shape of the back surface 8 in any cross-section including the central axis X 1, it is substantially symmetrical with respect to the central axis X 1.
  • legs 10 are equidistant from the central axis X 1, and are formed so as to be spaced at equal distances from each other
  • the lens 4 is fixed on the substrate 3 by the legs 10.
  • the light from the LED 2 enters and refracts the incident part 9 of the lens 4, a part of which is reflected by the surface 6, and the remaining part is transmitted through the surface 6 and emitted.
  • a part of the light reflected by the front surface 6 is transmitted through the back surface 8 and the remaining part is reflected by the back surface 8, and the light transmitted through the back surface 8 is reflected by the top surface 5 of the substrate 3 and passes from the back surface 8 to the lens 4.
  • the light reflected by the back surface 8 and the light reflected by the upper surface 5 are finally transmitted through the front surface 6 and emitted for illumination.
  • the rear surface 8 is formed in a tapered shape which is inclined upward at a predetermined angle as viewed from the side of the incident portion 9, the peak light intensity in the vicinity of the optical axis of LED2 (near the central axis X 1 of the lens 4) Decreases, and the amount of light away from the optical axis increases accordingly. As shown in FIG.
  • the peak light intensity is minimum in the vicinity of 4.5 °
  • the peak light amount is cut by 5% or more compared to the case where the back surface is not tapered, and the peak light amount is as shown in FIG.
  • the resulting bright spot (the central white dot in FIG. 6A) is not observed as shown in FIG. 6B.
  • the back surface 8 of the lens 4 is formed in a tapered shape that is inclined upward at a predetermined angle (inclination angle) when viewed from the incident portion 9 side, so that the peak light amount near the optical axis of the LED 2 is obtained. Decreases, and accordingly, the amount of light away from the optical axis increases to suppress uneven brightness.
  • This effect can be obtained simply by forming the back surface 8 into a tapered shape at a predetermined angle without processing the surface of the lens 4 into a complicated shape.
  • the lens 4 is designed to have a surface shape design. The degree of freedom is high, design and molding are easy, and luminance unevenness can be suppressed.
  • the back surface 8 is formed in a taper shape, the heat of the LED 2 that tends to be scattered near the incident portion 9 is easily dissipated from the lower space of the back surface 8 (the space between the back surface 8 and the upper surface 5 of the substrate 3). Thus, the heat dissipation effect can be improved.
  • the predetermined angle is 2.5 degrees or more and 6 degrees or less, whereby the peak light amount can be greatly reduced and luminance unevenness can be effectively suppressed.
  • FIG. 8 shows another example of a light emitting device provided with a diffusing lens according to the present invention.
  • the light emitting device 11 is the same as the light emitting device 1 except that the convex portion 7 is not formed on the top of the surface 6, and the light distribution corresponding to FIG. 7 is as shown in FIG.
  • FIG. 10 shows still another example of the light emitting device including the diffusing lens according to the present invention.
  • This light emitting device 12 is the same as the light emitting device 1 except that the convex portion 7 is not formed on the top of the surface 6 but the concave portion 13 is formed, and the light distribution corresponding to FIG. 7 is shown in FIG. As shown.
  • FIG. 12 shows a light emitting device 15 in which a heat radiation pattern 14 is provided on the substrate 3 of the light emitting device 1.
  • the heat radiation pattern 14 is formed on the side of the LED 2 by means of vapor deposition, etching or the like using a material having good thermal conductivity such as copper foil or aluminum foil, and sandwiches the LED 2 on the substrate 3 (on the substrate 3).
  • the circuit pattern (not shown) connected to the LED 2 is also formed, but this circuit pattern and the heat radiation pattern 14 are insulated.
  • the heat dissipation pattern 14 may be brought into close contact with each other in order to increase heat dissipation efficiency, or the heat dissipation pattern 14 may be used as a thermal pad, and an aluminum heat dissipation plate thereon. May be provided. Thereby, even if it is a case where LED2 is high-intensity and the emitted-heat amount is large, it can thermally radiate efficiently.
  • FIG. 13 shows a light-emitting device 17 in which the LED 2 is mounted on the substrate 3 of the light-emitting device 1 via the heat radiation pattern 16.
  • the LED 2 enters the inside of the concave incident portion 9 to increase the amount of light.
  • a heat radiation pattern 16 is formed immediately below the LED 2 to promote heat radiation. , Enhance the heat dissipation effect.
  • the heat radiation pattern 16 can be further increased in heat dissipation efficiency by increasing the thickness and lowering the position of the substrate 3 and expanding the space below the back surface 8 in the vertical direction.
  • the heat radiation pattern 16 is dimensioned so that the LED 2 is just mounted, but the heat radiation pattern 16 may have a certain length and size as in FIG. 12.
  • FIG. 14 and 15 show a light emitting device 19 provided with a lens 18 having a rectangular shape in plan view (square shape in plan view) instead of a circular shape in plan view.
  • the lens 18 is integrally formed of PMMA resin having a transmittance of 95% or more and a refractive index of about 1.5, and a center of gravity axis X 2 passing through a rectangular center of gravity (a center of gravity of the lens 18 in plan view) It is provided above the LED 2 so as to coincide with the optical axis of the LED 2.
  • the surface 20 of the lens 18, four bulged portion 21 so as to be substantially symmetrical are formed with respect to the center of gravity axis X 2, the shape of the surface 20, as a whole, substantially symmetrical with respect to the central axis X 2 It is.
  • the bulging portion 21 is effective when it is desired to increase the light diffusion by the rectangular lens 18 in the horizontal direction, particularly when the light-emitting device 19 is used as a backlight of a liquid crystal panel. It does not have to be provided.
  • shell-shaped concave entrance portion 23 is provided the light from LED2 incident, the shape of the incident portion 23 at an arbitrary section including the central axis X 2 is the central axis X 2 Is substantially symmetrical.
  • the back surface 22 is formed in a tapered shape inclined upward at a predetermined angle when viewed from the incident portion 23 side. Specifically, as shown in FIG. 16, the back surface 22 is a substantially triangular four divided tapered surface 24, the shape of the back surface 22 at any cross section including the central axis X 2, to the central axis X 2 It is almost symmetrical.
  • the entrance portion 23 On the outside of the entrance portion 23, as viewed from the bottom circular four legs 25 is positioned equidistant from the central axis X 2, and is formed to be spaced at equal distances from each other, the lens 18, the legs 25 to be fixed on the substrate 3.
  • the back surface 22 is formed in a tapered shape, so that even in the case of a rectangular lens, light can be diffused to the four corners to suppress luminance unevenness, and the lens surface shape can be freely designed.
  • the degree can be increased. That is, as shown in FIG. 17, varying the forming angle of inclination of the plane of the central axis X 2 and tapered surface (back surface 22) and the normal one by one degree, the peak light intensity becomes the minimum value in the vicinity of 5 degrees, In particular, when the tilt angle is 4 degrees or more and 6 degrees or less, the peak light amount is cut by 5% or more compared to the case where the back surface is not tapered, and the spectrum is diffused throughout the lens.
  • the 18 and 19 show a light emitting device 27 in which the incident portion 23 of the light emitting device 19 is changed to a rectangular tube concave incident portion 26.
  • the incident portion 25 has a square shape in plan view so as to be substantially similar to the outer shape of the lens 18, and suppresses radial rays extending in all directions by the ridgeline (square corner portion) of the rectangular tube.
  • the corner 28 is rounded.
  • the light emitting device 27 can easily obtain stronger light diffusion than the light emitting device 19 at the four corners of the lens 18, and can be suitably used for indirect lighting, stage lighting, and the like.
  • the light diffuses in a rectangular shape, and the light intensity tends to decrease from the central portion to the peripheral portion (this tendency is the light emission as shown in FIG. 6).
  • the device 1 and other light-emitting devices Such a light intensity distribution can be adjusted by changing the taper angle of the lens back surface.
  • a back surface polishing step is required separately from the lens molding step, which requires a lot of man-hours, and the accuracy of the taper angle also becomes a problem.
  • a lens having a rectangular shape in plan view when a divided tapered surface is formed on the back surface, it is difficult to uniformly process each divided tapered surface.
  • the division You may manufacture so that the upper block 29 which comprises the upper side of a surface, and the lower block 30 which comprises a lower side may be joined (the lens 4 is also the same). Thereby, it is only necessary to separate the upper block 29 including the surface 20 of the lens 18 and perform the taper processing only with the lower block 30, and it becomes easy to obtain the processing accuracy. In the mold, the nesting may be changed according to the taper angle. .
  • the lens 4 is manufactured, for example, by a mold 31 shown in FIGS. 22 and 23 (the same applies to the lens 18).
  • the mold 31 includes an upper mold 32 and a lower mold 33, and the upper mold 32 is provided with a surface forming portion 35 that is provided in the cavity 34 and forms the surface 6 of the lens 4.
  • a back surface forming portion 36 that forms the back surface 8 of the lens 4 in a tapered shape, an incident portion forming portion 37 that forms the incident portion 9 of the lens 4, and a leg portion forming portion that forms the leg portion 10 of the lens 4.
  • a gate 39 connected to the back surface forming portion 36 so as to inject the resin toward the front surface forming portion 35, a runner 40 connected to the gate 39, and a large diameter in the vertical direction on a part of the runner 40
  • a resin reservoir 41 formed in a circular shape in plan view is provided.
  • the large-diameter resin reservoir 41 is provided in a part of the runner 40, after the resin flowing into the cavity 34 stays in the resin reservoir, the pressure is received by the subsequent resin. Because it flows into the cavity through the gate all at once, a strong flow input can be obtained.
  • the gate 39 is connected to the back surface forming portion 36 so as to inject the resin toward the front surface forming portion 35, the resin flows into the cavity 34 along the surface forming portion 35, causing welds and shorts. Is less likely to occur.
  • the LED 2 emits white light, but may emit light of red, green, blue, or the like.
  • the lenses 4 and 18 may not be integrally formed of PMMA resin, and ABS (acrylonitrile / butadiene / styrene copolymer), PC (polycarbonate), or other transparent materials may be used.
  • the surface shape of the lens is not limited to the illustrated example, and the back surface 22 of the lens 18 having a rectangular shape in plan view has a single conical surface shape (instead of four divided tapered surfaces 24) as shown in FIG. It may be a tapered surface, or the back surface may be tapered with respect to an oval lens that is not circular or rectangular in plan view, and the shape of the resin reservoir is not limited to that illustrated. Instead, it may be a rectangular shape in plan view.
  • the present invention can be suitably used when the backlight of a large-screen image display device is composed of a small number of light emitting elements.
  • Light-emitting device 2 LED (light source) 3 Substrate 4, 18 lens (diffuse lens) 6,20 Front surface 8, 22 Back surface 9, 23, 26 Incident part 14, 16 Heat radiation pattern X 1 center axis X 2 center of gravity axis

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Lenses (AREA)
  • Led Device Packages (AREA)
  • Planar Illumination Modules (AREA)

Abstract

Le problème à résoudre dans le cadre de la présente invention consiste à fournir une lentille de diffusion qui présente un degré élevé de liberté de conception d'une forme de surface, qui peut être facilement conçue et moulée et qui peut réduire des variations de luminance. La solution selon la présente invention consiste en une lentille (4) qui présente une forme circulaire selon une vue en plan, une surface opposée (6) et une surface inverse (8) étant chacune formées de sorte à être sensiblement symétriques par rapport à l'axe central X passant par le centre de la forme circulaire, une partie d'incidence en retrait (9), sur laquelle est incidente une lumière provenant d'une DEL (2) placée de telle sorte qu'un axe optique corresponde à l'axe central X, ladite lentille étant disposée dans la partie centrale de la surface inverse (8) et la surface inverse (8) est façonnée dans une forme conique inclinée vers le haut selon un angle prédéterminé lorsqu'elle est vue depuis le côté partie incidente (9).
PCT/JP2016/077424 2015-09-30 2016-09-16 Lentille de diffusion, appareil d'émission de lumière et moule de moulage par injection pour une lentille de diffusion WO2017057051A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015195121A JP2018194566A (ja) 2015-09-30 2015-09-30 拡散レンズ及び発光装置
JP2015-195121 2015-09-30

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WO2017057051A1 true WO2017057051A1 (fr) 2017-04-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107816701A (zh) * 2017-01-20 2018-03-20 佛山市中山大学研究院 一种具有非平滑曲线的直下式背光透镜
JP2019101407A (ja) * 2017-12-05 2019-06-24 國家中山科學研究院 光均一性を向上できる中空ナノ構造の二次光学レンズの製作方法

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Publication number Priority date Publication date Assignee Title
JP2007311524A (ja) * 2006-05-18 2007-11-29 Pentax Corp レーザ走査装置の放熱装置
JP2011022444A (ja) * 2009-07-17 2011-02-03 Panasonic Corp 接合光学素子
JP2011095492A (ja) * 2009-10-29 2011-05-12 Asahi Rubber Inc ハイブリッドレンズ
JP2012099409A (ja) * 2010-11-04 2012-05-24 Nittoh Kogaku Kk 照明用レンズ
JP2012129105A (ja) * 2010-12-16 2012-07-05 Hitachi Consumer Electronics Co Ltd バックライトユニット、及びそれを用いた液晶表示装置
WO2013047274A1 (fr) * 2011-09-30 2013-04-04 コニカミノルタアドバンストレイヤー株式会社 Moule et procédé pour produire un élément optique
JP2014064021A (ja) * 2008-05-30 2014-04-10 Sharp Corp 発光装置、面光源および液晶表示装置
JP2015043427A (ja) * 2013-08-26 2015-03-05 ソウル セミコンダクター カンパニー リミテッド 面照明用レンズ及び発光モジュール
JP2015153629A (ja) * 2014-02-14 2015-08-24 株式会社小糸製作所 投影レンズ及びそれを備えた車両用灯具

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007311524A (ja) * 2006-05-18 2007-11-29 Pentax Corp レーザ走査装置の放熱装置
JP2014064021A (ja) * 2008-05-30 2014-04-10 Sharp Corp 発光装置、面光源および液晶表示装置
JP2011022444A (ja) * 2009-07-17 2011-02-03 Panasonic Corp 接合光学素子
JP2011095492A (ja) * 2009-10-29 2011-05-12 Asahi Rubber Inc ハイブリッドレンズ
JP2012099409A (ja) * 2010-11-04 2012-05-24 Nittoh Kogaku Kk 照明用レンズ
JP2012129105A (ja) * 2010-12-16 2012-07-05 Hitachi Consumer Electronics Co Ltd バックライトユニット、及びそれを用いた液晶表示装置
WO2013047274A1 (fr) * 2011-09-30 2013-04-04 コニカミノルタアドバンストレイヤー株式会社 Moule et procédé pour produire un élément optique
JP2015043427A (ja) * 2013-08-26 2015-03-05 ソウル セミコンダクター カンパニー リミテッド 面照明用レンズ及び発光モジュール
JP2015153629A (ja) * 2014-02-14 2015-08-24 株式会社小糸製作所 投影レンズ及びそれを備えた車両用灯具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107816701A (zh) * 2017-01-20 2018-03-20 佛山市中山大学研究院 一种具有非平滑曲线的直下式背光透镜
JP2019101407A (ja) * 2017-12-05 2019-06-24 國家中山科學研究院 光均一性を向上できる中空ナノ構造の二次光学レンズの製作方法

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