WO2014038182A1 - 発光装置 - Google Patents
発光装置 Download PDFInfo
- Publication number
- WO2014038182A1 WO2014038182A1 PCT/JP2013/005197 JP2013005197W WO2014038182A1 WO 2014038182 A1 WO2014038182 A1 WO 2014038182A1 JP 2013005197 W JP2013005197 W JP 2013005197W WO 2014038182 A1 WO2014038182 A1 WO 2014038182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- taper rod
- rod
- led
- emitting device
- Prior art date
Links
- 239000011347 resin Substances 0.000 claims abstract description 63
- 229920005989 resin Polymers 0.000 claims abstract description 63
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 3
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 28
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
- 239000004038 photonic crystal Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
-
- 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
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0994—Fibers, light pipes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
Definitions
- the present invention relates to a light emitting device mainly used as a light source of a video device.
- Non-Patent Document 1 describes this structure.
- the light extraction efficiency cannot be said to be sufficiently high.
- Non-Patent Document 2 a method of attaching a hemispherical lens on a LED via a resin as in Non-Patent Document 2 is used.
- a resin is applied on the LED having the texture structure as described above, and a hemispherical lens is disposed thereon.
- the resin and the hemispherical lens are selected to have substantially the same refractive index. If the area of the bottom surface of the hemispherical lens is sufficiently larger than the light emitting area of the LED, most of the light extracted into the resin can be extracted into the air. Therefore, the light extraction efficiency of the LED is improved.
- the structure using a hemispherical lens as described above is suitable for applications such as lighting where it is desirable to irradiate a wide area because it is difficult to collect the extracted light, but the light from the light source is compared with a light valve, etc. It is not suitable for applications such as projectors that need to be collected in an optical component with a small area. If the light source having such a structure is applied to a projector, the light extraction efficiency from the LED into the air is improved as compared with the case of the LED alone, but the light utilization efficiency in the subsequent optical system is greatly reduced. As a result, the efficiency of the projector as a whole decreases.
- the present invention has been made in view of such problems, and its purpose is to collect emitted light while making the light extraction efficiency of the LED sufficiently high and to enter the subsequent optical system.
- An object is to provide an easy light emitting device.
- the light-emitting device of the present invention includes a light-emitting element and a tapered rod having an exit surface area larger than the incident surface, and a transparent resin is filled between the light-emitting element and the tapered rod, and at least a part of the tapered rod is The refractive index is higher than that of the transparent resin.
- a part of the taper rod has a higher refractive index than the transparent resin, in addition to the case where the taper rod body is made of a material such as glass having a higher refractive index than the resin between the light emitting element and the taper rod.
- the refractive index of the taper rod body is equal to or less than that of the transparent resin, but includes a case where a multilayer film including a material having a higher refractive index than the transparent resin is provided on the side surface.
- the light extraction efficiency from the LED can be improved, and the emitted light can be easily condensed.
- FIG. 1 is a cross-sectional view showing the structure of a light emitting device according to a first embodiment of the present invention.
- the light emitting device shown in FIG. 1 includes an LED 1, a transparent resin 2, and a taper rod 3.
- This LED 1 emits red light having AlGaInP as an active layer.
- the refractive index of the transparent resin 2 is 1.41
- the refractive index of the tapered rod 3 is 2.15.
- LED1 has a light emitting surface of 2 ⁇ 2.7 mm and an area of 5.4 mm 2 .
- the entrance surface and the exit surface of the taper rod 3 are 2 ⁇ 2.7 mm, 2.83 ⁇ 3.82 mm, the area is 5.4 mm 2 , 10.8 mm 2 , and the length of the taper rod 3 is 9.4 mm. did.
- Antireflection films for air and transparent resin are formed on the entrance surface and the exit surface of the taper rod 3, respectively.
- the thickness of the transparent resin 2 is about 10 ⁇ m.
- FIG. 2 is a diagram showing measured values of the light output characteristics of the first embodiment of the present invention.
- FIG. 2 also shows measured values of the light output characteristics of the LED alone.
- a light output of about 1.65 times that of a single LED was obtained, and a significant improvement in light extraction efficiency was confirmed.
- the operation of the light emitting device in this embodiment will be described.
- a structure in which a resin is simply applied to an LED Since the ratio of the refractive index of the LED and the resin is smaller than the refractive index ratio of the LED and the air, the light extraction efficiency from the LED into the resin is higher than the light extraction efficiency from the LED into the air.
- the light extraction efficiency from the LED to the air in this structure is the product of the light extraction efficiency from the LED to the resin and the light extraction efficiency from the resin to the air, and the value is directly from the LED to the air. The efficiency is the same as when taking out.
- the taper rod 3 is disposed on the transparent resin 2 as exemplified in the above embodiment, the angle of light is converted in the taper rod, so that the light totally reflected on the emission surface is greatly reduced. To do. For this reason, the light extraction efficiency is significantly higher in the case of exiting from the transparent resin through the taper rod to the air than in the case of exiting directly from the transparent resin to the air. Therefore, the light extraction efficiency from the LED 1 to the air in the present embodiment is higher than when light is extracted directly from the LED to the air. In this configuration, it is necessary that light does not leak outside when reflected on the side surface of the taper rod 3.
- the refractive index of the taper rod 3 is sufficiently higher than the refractive index of the transparent resin 2.
- the refractive index of the transparent resin is n1
- the refractive index of the taper rod is n2
- the taper angle of the taper rod is ⁇ t, n2 ⁇ cos ⁇ sin ⁇ 1 (n1 / n2) ⁇ t ⁇ ⁇ 1 (1) It is desirable to satisfy.
- the taper angles are 2.53 ° and 3.41 ° on the short side and the long side of the rectangle of the incident / exit surface, respectively.
- the refractive index of the taper rod 3 is 2.15, and the refractive index of the transparent resin 2 is sufficiently higher than 1.41, sufficiently satisfying the above formula (1).
- Patent Document 1 discloses a structure in which the refractive index of the tapered rod and the transparent resin is matched, that is, a structure in which n2 ⁇ n1, but in this structure, a part of the light incident on the tapered rod leaks from the side surface, It will not reach the exit surface. For this reason, in the video equipment such as a projector, the light use efficiency decreases.
- a reflective coating to the entire side surface of the taper rod, it is possible to reduce light leakage from the side surface, but this involves a significant increase in cost.
- the above formula (1) is satisfied, light leakage from the side surface can be prevented without performing such coating.
- Equation (1) is a necessary condition for preventing light from leaking from the side surface.
- Equation (1) represents a necessary condition for preventing light from leaking from the side surface.
- Equation (1) is a necessary condition for preventing light from leaking from the side surface.
- the side surface of the taper rod is covered with a transparent medium or the like, that is, when the refractive index around the side surface is larger than 1, Equation (1) is a necessary condition for preventing light from leaking from the side surface.
- the taper rod structure desirable from the viewpoint of improving the light extraction efficiency from the LED will be described.
- the exit area of the taper rod is less than the incident area.
- the ratio needs to be at least the square of the refractive index of the resin.
- FIG. 3 is a cross-sectional view showing the structure of the light emitting device according to the second embodiment of the present invention.
- the second embodiment of the present invention includes an LED 1, a transparent resin 2, and a taper rod 3 as in the first embodiment.
- the LED 1 and the transparent resin 2 are the same as those in the first embodiment, but the refractive index of the taper rod 3 is 1.52, which is lower than that in the first embodiment.
- the high reflection film 4 made of a dielectric is formed on all side surfaces to prevent light from leaking out from the side surfaces of the taper rod.
- an angle filter 5 is arranged in addition to the LED 1, the transparent resin 2, and the taper rod 3 that are the same as those in the first embodiment.
- the angle filter 5 has a characteristic of transmitting light within a certain incident angle but reflecting light having a larger angle. Of the light incident on the angle filter 5, light having a large incident angle is reflected, returns to the LED 1 side through the taper rod 3 and the transparent resin 2, and is reflected by the LED 1. Since the texture structure and photonic crystal as described above are formed on the surface of the LED 1, the angle of light changes when reflected by the LED 1. The light reflected by the LED 1 travels again through the transparent resin 2 and the taper rod 3 to the angle filter 5.
- the angle of the light changes upon reflection by the LED 1, so the angle filter again.
- the light incident on 5 includes light having a small incident angle. Accordingly, some light passes through the angle filter 5. On the other hand, light having a large angle is reflected. By repeating this, only light within a certain angle is extracted from the light source in the form of FIG.
- the angle filter 5 functions even if it is disposed on the LED 1.
- the angle filter 5 As described above, light having a large incident angle is reflected by the angle filter 5, then reflected by the LED 1, and enters the angle filter 5 again. That is, the reflected light is reused. All the reflected light is not used, and a part is lost. The main loss is caused by the fact that the reflectance of the LED 1 is not sufficiently high. Since most of the light incident on the LED 1 enters the inside of the LED 1, the reflectance of the LED 1 greatly depends on the light extraction efficiency from the LED 1. In general, the higher the light extraction efficiency, the higher the reflectance. In the structure of the present invention, since the light extraction efficiency from the LED 1 can be increased, the reflectance of the LED 1 is also increased.
- the 4th Embodiment of this invention consists of LED1, the transparent resin 2, and the taper rod 3 similarly to the 1st form.
- LED1 and transparent resin 2 are the same as in the first embodiment.
- the taper rod 3 is different.
- the incident surface of the tapered rod 3 is a 5.4 mm 2
- the exit surface is 52 mm 2
- the area ratio of the entrance surface and the exit surface is approximately 9.6.
- the taper rod length is 50 mm and the refractive index is 1.9.
- the square of the refractive index of the resin 2 is 1.99, whereas the area ratio of the incident / exit surface is 2, and both are substantially equal.
- the angular distribution of light emitted from the exit surface of the tapered rod 3, that is, the light distribution is substantially equal to the light distribution of the LED 1.
- the light distribution is distributed at an angle of 0 to 90 ° according to Lambertian.
- the light distribution from the tapered rod 3 is also approximately according to Lambertian. It is distributed from 0 to 90 °.
- the area ratio of the incident / exit surfaces is 9.6, which is sufficiently larger than the square of the refractive index of the transparent resin 2.
- the light distribution on the exit surface changes due to the angle conversion in the taper rod. In this case, most of the light is distributed within approximately 0 to 30 °.
- FIG. 5 is a sectional view showing the structure of a light emitting device according to the fifth embodiment of the present invention.
- the first taper rod 6 is connected to the LED 1 via the transparent resin 2, and the second taper rod 7 is disposed at the subsequent stage.
- LED1, transparent resin 2, and the 1st taper rod 6 are the same as a 1st form.
- the second tapered rod 7, the area of the incident surface is 10.8 mm 2, the area of the exit surface has a 52 mm 2. That is, the areas of the exit surface of the first taper rod 6 and the entrance surface of the second taper rod 7 are the same.
- the length of the second taper rod 7 is 35 mm, and the refractive index is 1.52.
- the 1st taper rod 6 and the 2nd taper rod 7 are arrange
- the first taper rod 6 is made of high refractive index glass having a refractive index of 2.15
- the second taper rod 7 is made of glass having a general refractive index of refractive index of 1.52.
- the first taper rod 6 fulfills the function of improving the light extraction efficiency from the LED 1 and needs to have a higher refractive index than the transparent resin 2 as described above, but the second taper rod 7 has a light distribution distribution of the emitted light.
- the conversion function is fulfilled, and the taper rod length can be shortened when the refractive index is lower in this portion. This is because the lower the refractive index, the larger the angle of light with respect to the normal direction of the incident / exit surface in the taper rod, and the easier it is to reach the side surface. Therefore, in order to realize an equivalent light distribution, the present embodiment can keep the entire length shorter than the fourth embodiment, and can contribute to the miniaturization of the apparatus.
- the first taper rod 6 and the second taper rod 7 are arranged with a slight gap therebetween, but both may be in close contact or may be bonded together.
- bonding if the refractive index of the adhesive is equal to that of the second taper rod 7, an antireflection film on the incident surface of the second taper rod 7 becomes unnecessary, and the cost can be reduced.
- the antireflection film on the emission surface of the first taper rod 6 is designed to function with respect to the refractive index of the adhesive.
- the LED 1, the transparent resin 2, the first taper rod 6, and the second taper rod 7 are arranged in this order.
- a child 8 is arranged.
- the reflective polarizer 8 light having polarization parallel to the transmission axis direction is transmitted, and the remaining light is reflected. Since the light emitted from the LED 1 is non-polarized light, the ratio of the transmitted light and the reflected light is approximately 1: 1.
- the light reflected by the reflective polarizer 8 returns to the LED 1 side through the second tapered rod 7, the first tapered rod 6 and the transparent resin 2, and is reflected by the LED 1. At the time of reflection by the LED 1, the polarization is disturbed due to the influence of the texture structure of the surface, and becomes non-polarized again.
- the light reflected by the LED 1 travels toward the reflective polarizing element 8 again. Here again, about half is transmitted and the other half is reflected. By repeating this process, finally, almost all light is extracted from the exit surface as linearly polarized light in one direction.
- the reflectance at the LED 1 is increased in order to improve the light extraction efficiency from the LED 1. Therefore, compared with the case where the direct reflection type polarizer 8 is disposed on the LED 1, the reuse efficiency of the reflected light can be increased.
- light is distributed in a narrow angle range of 0 to 30 ° from the exit surface of the second taper rod 7 as in the fifth embodiment. Since this light is incident on the reflective polarizer 8, the incident angle tolerance required for the reflective polarizer 8 can be greatly reduced.
- the light incident on and reflected by the LED 1 is assumed to be non-polarized light.
- the depolarization effect may be insufficient.
- a diffusion plate may be inserted between the first taper rod 6 and the second taper rod 7. In this case, it is desirable that at least the diffusion plate and the second taper rod 7 are not bonded and have an air layer.
- the case where the structure of the present invention is applied to the red LED is taken as an example.
- a red LED made of an AlGaInP crystal has a higher refractive index than a blue or green LED made of an InGaN crystal, so that the light extraction efficiency is low and the effect of the present invention is most noticeable.
- the present invention can be applied to LEDs of other colors such as blue and green, and can also be applied to light sources such as organic ELs as well as LEDs made of semiconductors.
- the area ratio of the entrance and exit surfaces of the taper rod is preferably equal to or larger than the square of the refractive index of the transparent resin.
- this area ratio is The ratio of the incident surface of the taper rod to the exit surface of the taper rod from which light is first emitted to the air.
- the incidence of the first taper rod 7 is incident. It is the area ratio of the surface to the exit surface.
- a transparent resin 9 is filled between the first taper rod 6 and the second taper rod 7, and optical components such as a third taper rod 10 or a lens are sandwiched with air in the subsequent stage. Is the area ratio of the incident surface of the first taper rod 6 and the exit surface of the second taper rod 7.
- the light emitting area of the LED and the area of the incident surface of the taper rod immediately above the LED are substantially the same. This is because when the incident area of the taper rod is small, a part of the light is not taken in, and when the incident area is large, Etendue increases.
- a transparent resin is filled between the LED and the taper rod, but this may be a transparent adhesive.
- an adhesive is used, the relative position between the LED and the taper rod can be maintained even when an impact or vibration is applied to the light source module.
- the transparent resin between the LED and the taper rod is as thin as possible. This is to prevent light from escaping from the side surface of the transparent resin. For the same reason, it is desirable that the application area of the transparent resin is substantially the same as the light emission area of the LED.
- the taper rod having a constant taper angle is taken as an example.
- the taper angle may change from the incident surface toward the output surface. In this case, it is desirable to satisfy the formula (1) shown in the first embodiment for the largest taper angle in the taper rod.
- the transparent resin between the LED and the taper rod, or the transparent resin 9 between the first taper rod 6 and the second taper rod 7 in FIG. 7 may be in the form of a gel, or an adhesive such as thermosetting or UV curing. It may be an agent.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Projection Apparatus (AREA)
- Led Device Packages (AREA)
- Optical Elements Other Than Lenses (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
本発明の実施形態について図面を参照して説明する。図1は本発明の第1の実施の形態における発光装置の構造を示す断面図である。
n2×cos{sin-1(n1/n2)-θt}≧1 ・・・(1)
を満たすことが望ましい。
(第2の実施形態)
本発明の第2の実施形態に係る発光装置について説明する。図3は本発明の第2の実施の形態における発光装置の構造を示す断面図である。
(第3の実施形態)
本発明の第3の実施形態に係る発光装置について説明する。図4は本発明の第3の実施の形態における発光装置の構造を示す断面図である。
(第4の実施形態)
本発明の第4の実施形態に係る発光装置について説明する。
(第5の実施形態)
本発明の第5の実施形態に係る発光装置について説明する。図5は本発明の第5の実施の形態における発光装置の構造を示す断面図である。
(第6の実施形態)
本発明の第6の実施形態に係る発光装置について説明する。図6は本発明の第6の実施の形態における発光装置の構造を示す断面図である。
2 透明樹脂
3 テーパロッド
4 誘電体からなる高反射膜
5 角度フィルタ
6 第1のテーパロッド
7 第2のテーパロッド
8 反射型偏光子
9 透明樹脂
10 第3のテーパロッド
Claims (10)
- 発光素子と、入射面よりも出射面の面積が大きいテーパロッドを備え、前記発光素子と前記テーパロッドの間に透明樹脂が充填されており、前記テーパロッドの少なくとも一部は、前記透明樹脂よりも屈折率が高いことを特徴とする発光装置。
- 前記発光素子の発光面積と前記テーパロッドの入射面の面積が略等しいことを特徴とする請求項1に記載の発光装置。
- 前記テーパロッドが、前記透明樹脂よりも屈折率が高い材料を主体として構成されることを特徴とする請求項1から2の何れかに記載の発光装置。
- 前記テーパロッドの出射面と入射面の面積比が、前記透明樹脂の屈折率の二乗以上であることを特徴とする請求項1から3の何れかに記載の発光装置。
- 前記発光素子はAlGaInPを主成分とする発光層を有することを特徴とする請求項1から4の何れかに記載の発光装置。
- 前記テーパロッドの最大テーパ角をθt、透明樹脂の屈折率をn1、テーパロッドの屈折率をn2とする場合、これらが下記の条件を満たすことを特徴とする請求項3から5に記載の発光装置。
n2×cos{sin-1(n1/n2)-θt}≧1 - 前記テーパロッドの側面に誘電体反射膜が形成されていることを特徴とする請求項1から5の何れかに記載の発光装置。
- 前記テーパロッドの後段に、出射光のうち、ある状態にある光を透過し、それ以外の光を反射する光学素子を有することを特徴とする請求項1から7の何れかに記載の発光装置。
- 前記テーパロッドの出射面の後段に、さらに第2のテーパロッドを備えることを特徴とする請求項1から8の何れかに記載の発光装置。
- 前記第2のテーパロッドの屈折率が、第1のテーパロッドの屈折率よりも低いことを特徴とする請求項9に記載の発光装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/424,273 US20150323733A1 (en) | 2012-09-04 | 2013-09-03 | Luminescent device |
JP2014534186A JPWO2014038182A1 (ja) | 2012-09-04 | 2013-09-03 | 発光装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-194034 | 2012-09-04 | ||
JP2012194034 | 2012-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014038182A1 true WO2014038182A1 (ja) | 2014-03-13 |
Family
ID=50236811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/005197 WO2014038182A1 (ja) | 2012-09-04 | 2013-09-03 | 発光装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150323733A1 (ja) |
JP (1) | JPWO2014038182A1 (ja) |
WO (1) | WO2014038182A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017228712A (ja) * | 2016-06-24 | 2017-12-28 | シチズン電子株式会社 | Led発光装置 |
WO2018225376A1 (ja) * | 2017-06-06 | 2018-12-13 | コニカミノルタ株式会社 | 照明ユニット |
JP2020155265A (ja) * | 2019-03-19 | 2020-09-24 | 丸茂電機株式会社 | 壁面照射用のランプ、およびそれを用いた照明器具 |
JP2021152632A (ja) * | 2020-03-23 | 2021-09-30 | セイコーエプソン株式会社 | 光源装置およびプロジェクター |
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- 2013-09-03 JP JP2014534186A patent/JPWO2014038182A1/ja active Pending
- 2013-09-03 WO PCT/JP2013/005197 patent/WO2014038182A1/ja active Application Filing
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JP2005346970A (ja) * | 2004-05-31 | 2005-12-15 | Canon Inc | 照明装置および撮影装置 |
JP2005353816A (ja) * | 2004-06-10 | 2005-12-22 | Olympus Corp | 発光デバイス、発光デバイスの製造方法、発光デバイスを用いた照明装置、及び、プロジェクタ |
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JP2009058594A (ja) * | 2007-08-30 | 2009-03-19 | Ricoh Co Ltd | 照明装置および画像表示装置 |
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JP2017228712A (ja) * | 2016-06-24 | 2017-12-28 | シチズン電子株式会社 | Led発光装置 |
WO2018225376A1 (ja) * | 2017-06-06 | 2018-12-13 | コニカミノルタ株式会社 | 照明ユニット |
JP2020155265A (ja) * | 2019-03-19 | 2020-09-24 | 丸茂電機株式会社 | 壁面照射用のランプ、およびそれを用いた照明器具 |
JP2021152632A (ja) * | 2020-03-23 | 2021-09-30 | セイコーエプソン株式会社 | 光源装置およびプロジェクター |
JP7070620B2 (ja) | 2020-03-23 | 2022-05-18 | セイコーエプソン株式会社 | 光源装置およびプロジェクター |
Also Published As
Publication number | Publication date |
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JPWO2014038182A1 (ja) | 2016-08-08 |
US20150323733A1 (en) | 2015-11-12 |
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