WO2012056670A1 - 組み合わせ光学素子とそれを備えた照明装置 - Google Patents
組み合わせ光学素子とそれを備えた照明装置 Download PDFInfo
- Publication number
- WO2012056670A1 WO2012056670A1 PCT/JP2011/005924 JP2011005924W WO2012056670A1 WO 2012056670 A1 WO2012056670 A1 WO 2012056670A1 JP 2011005924 W JP2011005924 W JP 2011005924W WO 2012056670 A1 WO2012056670 A1 WO 2012056670A1
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- Prior art keywords
- optical element
- combined
- light
- combined optical
- light source
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- 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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
-
- 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
- G03B2215/00—Special procedures for taking photographs; Apparatus therefor
- G03B2215/05—Combinations of cameras with electronic flash units
- G03B2215/0589—Diffusors, filters or refraction means
- G03B2215/0592—Diffusors, filters or refraction means installed in front of light emitter
Definitions
- the present invention relates to a combined optical element which is compact and bright and can irradiate only a necessary range as an auxiliary light source of photographing equipment such as a DSC, a portable telephone, a video camera and the like, and an illumination apparatus provided with the same.
- photographing devices such as digital still cameras (DSCs), cellular phones, video cameras and the like are equipped with a strobe lighting device for illuminating a subject brightly in order to enable photographing at night or in a dark place.
- DSCs digital still cameras
- cellular phones cellular phones
- video cameras and the like are equipped with a strobe lighting device for illuminating a subject brightly in order to enable photographing at night or in a dark place.
- FIG. 7 is a front view illustrating the configuration of a camera-equipped mobile phone.
- the exterior body 17 is provided with various buttons 18, a release button 19 used for photographing, a liquid crystal display 20, an electronic camera 21, and a strobe device 22. .
- a plurality of buttons 18 are provided on the lower portion of the front of the exterior body 17 to input numbers and characters.
- the display 20 is provided on the upper portion of the exterior body 17 and displays communication information, an image, and the like.
- the electronic camera 21 is disposed on the upper side of the display 20 with the lens exposed.
- a lighting device 27 as shown in FIG. 8 can be applied as a lighting device for a strobe that meets the above requirements.
- FIG. 8 is a schematic view showing a conventional lighting device.
- the illuminating device 27 is provided with the LED light source 23 and the optical lens 24 which are point light sources (for example, refer patent document 1).
- the optical lens 24 has an entrance surface 25 facing the LED light source 23 and an exit surface 26 on the opposite side (subject side) of the LED light source 23.
- the LED light source 23 itself of the lighting device 27 is also provided with an optical system, the radiation light emitted from the LED light source 23 forms a circular dispersion pattern of a positive irradiation angle by condensing the light. Then, the radiation light of the circular dispersion pattern can be controlled by the optical lens 24 so that the radiation light of the LED light source 23 can be condensed with a necessary light dispersion pattern.
- the LED light source 23 of the illumination device 27 is a point light source, the radiation light emitted from the optical lens 24 is conically irradiated even if it is controlled by the optical lens 24. As a result, the illumination device 27 illuminates the subject with circular light.
- the horizontal and vertical dimensions are the aspect ratio (4: 3). Therefore, when the subject is illuminated in a circular shape by the illumination device 27, as shown in FIG. 4 which will be described in detail later, four places are projected and projected in a bow shape from the tetragonal outer periphery of the illuminated surface 16 of the subject.
- the light of the part, that is, the bow-shaped part 13 does not contribute to photographing. As a result, there is a problem that the light emitted from the illumination device 27 can not be effectively used as illumination of the illumination surface 16 of the subject.
- the combination optical element of the present invention comprises: a first optical element for condensing light in one direction on an irradiation surface; and a second optical element for condensing light in another direction.
- the incident surfaces of the first optical element and the second optical element are made to be the same surface, and the output surface is formed only by the overlapping portions.
- the light from the point light source can be condensed on the irradiation surface, and the light can be effectively used.
- a compact and bright illumination device can be realized.
- the power consumption of the photographing device provided with the lighting device can be lowered, the life of the battery can be extended.
- FIG. 1 is a perspective view showing a lighting device according to an embodiment of the present invention.
- FIG. 2A is a perspective view showing a first optical element that contributes to light distribution characteristics in the vertical direction of the combined optical element in the embodiment.
- FIG. 2B is a perspective view showing a second optical element that contributes to light distribution characteristics in the horizontal direction of the combined optical element in the embodiment.
- FIG. 2C is a perspective view showing a combined optical element in which the first optical element of FIG. 2A and the second optical element of FIG. 2B in the same embodiment are combined.
- FIG. 3 is a cross-sectional view showing the lighting device in the embodiment.
- FIG. 4 is a schematic perspective view explaining the state of being illuminated by the illumination device in the embodiment.
- FIG. 4 is a schematic perspective view explaining the state of being illuminated by the illumination device in the embodiment.
- FIG. 5 is a perspective view showing another example of the combined optical element in the embodiment.
- FIG. 6 is a perspective view showing still another example of the combined optical element and the illumination apparatus using the same in the embodiment.
- FIG. 7 is a front view illustrating the configuration of a camera-equipped mobile phone.
- FIG. 8 is a schematic view of a conventional lighting device.
- FIG. 1 is a perspective view showing a lighting device according to an embodiment of the present invention.
- the illumination device of the present embodiment comprises at least a point light source 1 composed of, for example, an LED chip, and a combination optical element 2.
- the combined optical element 2 is composed of, for example, two sets of cylindrical lenses, and the incident surface 3 of the combined optical element 2 and the point light source 1 are disposed to face each other.
- the incident surface 3 on which the light emission from the point light source 1 of the combined optical element 2 is formed is rectangular and flat.
- light is emitted from the exit surface 4 which is the opposite side (subject side) of the entrance surface 3 of the combined optical element 2, and illuminates the illumination surface 16 (see FIG. 4) of the subject.
- the lighting device of the present embodiment is configured.
- the combination optical element 2 can be formed of, for example, a transparent resin material such as PMMA (polymethyl methacrylate), PC (polycarbonate), EP (epoxy resin), silicone resin, or transparent glass.
- a transparent resin material such as PMMA (polymethyl methacrylate), PC (polycarbonate), EP (epoxy resin), silicone resin, or transparent glass.
- FIG. 2A-FIG. 2C the combination optical element which comprises an illuminating device is demonstrated in detail using FIG. 2A-FIG. 2C, referring FIG.
- FIG. 2A is a perspective view showing a first optical element that contributes to light distribution characteristics in the vertical direction of the combined optical element in the embodiment.
- FIG. 2B is a perspective view showing a second optical element that contributes to light distribution characteristics in the horizontal direction of the combined optical element in the embodiment.
- FIG. 2C is a perspective view showing a combined optical element in which the first optical element of FIG. 2A and the second optical element of FIG. 2B in the same embodiment are combined.
- FIG. 4 is a schematic perspective view explaining the state of being illuminated by the illumination device in the embodiment.
- the combination optical element 2 is comprised from the 1st optical element 2A and the 2nd optical element 2B.
- the first optical element 2A has a substantially semicircular (including semicircular) cross section for effectively condensing light in the horizontal direction 14 of the irradiation surface 16 shown in FIG.
- it comprises a cylindrical lens.
- the second optical element 2B has, for example, a substantially semicircular (including semicircular) cross section for effectively condensing light in the vertical direction 15 of the irradiation surface 16 shown in FIG. It is composed of a cylindrical lens.
- the combined optical element 2 has two types of optical elements, the first optical element 2A and the second optical element 2B, in the direction of the optical axis 8 such that the incident surface 3 of each optical element has the same height (flat surface) It piles up to become.
- the combined optical element 2 shown in FIG. 2C is formed which has the exit surface 4 in which the overlapping portion of the first optical element 2A and the second optical element 2B is a lens.
- the combination optical element 2 may be referred to as a cylindrical combination lens.
- FIG. 3 is a cross-sectional view showing a lighting apparatus according to an embodiment of the present invention.
- the point light source 1 such as an LED chip disposed close to the combined optical element 2 emits light
- the light on the optical axis 8 vertically enters the incident surface 3 of the combined optical element 2 And go straight out of the exit surface 4 of the combined optical element 2.
- two diagonal lines 5a and 5b are formed on the exit surface 4 of the combined optical element 2 ing. Therefore, the light emitted from each of the four exit faces 4 divided by the two diagonal lines 5a and 5b is emitted in a shape closer to a quadrangle (here, an aspect ratio). Thereby, the irradiation surface 16 of the subject can be irradiated in the shape of the aspect ratio. As a result, light can be effectively collected and illuminated within the range of the required illuminated surface 16 of the subject.
- the light emitted from the point light source 1 spreads in a circular shape and is irradiated, but by using the combined optical element 2 of the present invention, a tetragonal inscribed in a circle
- the light irradiated to the arc-shaped portion 13 in the hatched portion surrounded by the sides 11 and the arc 12 can be condensed by the combined optical element 2 onto the tetragonal irradiation surface 16 for illumination. Therefore, light can be used effectively.
- FIG. 5 is a perspective view showing another example of the combined optical element in the present embodiment.
- the relationships of a ⁇ b and 0 ⁇ R ⁇ a / 2 are satisfied.
- the curvature R is set to be satisfactory. Thereby, the condensing property of the combination optical element 2 can be further improved.
- a is the length of one side of the rectangular combined optical element 2
- b is the length of the side adjacent to a.
- R indicates the curvature of the exit surface 4 of the combined optical element 2.
- the curvature R is given to the diagonal lines 5a and 5b of the overlapping portion of the surface of the first optical element 2A of the combined optical element 2 and the surface of the second optical element 2B. Can be adjusted. Then, by satisfying the conditions of a ⁇ b and 0 ⁇ R ⁇ a / 2, the light collecting property can be further improved.
- the illumination device includes at least a substrate 9, a socket 10, a combination optical element 2, and a point light source 1.
- the substrate 9 has an electric circuit wired so as to be connectable to another circuit, and an electronic component that forms, for example, a lighting circuit or the like is mounted.
- the combination optical element 2 is positioned and fixed by fitting the combination optical element 2 into the socket 10 fixed on the substrate 9.
- the point light source 1 is mounted on the inner side of the socket 10 on the substrate 9 at the position of the optical axis 8 opposite to the incident surface 3 of the combined optical element 2. That is, the point light source 1 is disposed on the optical axis 8 extending a line connecting the center of the combined optical element 2 and the center of the irradiation surface 16 of the subject.
- the incident surface 3 of the combined optical element 2 close to the point light source 1 in order to make all the light emitted by the point light source 1 enter the combined optical element 2.
- the point light source 1 for example, a compact LED chip with low power consumption is used.
- each side of the quadrangle of the combined optical element 2 of the lighting device is parallel to, for example, each side of the exterior body 17 in the exterior body 17 of the mobile phone with a camera shown in FIG. It arranges and loads it like. Then, when the shooting button of the mobile phone is turned on, the lighting device emits light in accordance with the timing. At this time, the combined optical element 2 of the illumination device can collect light on the irradiation surface within the imaging range of the subject and can effectively irradiate it. Thus, light is not irradiated to the unnecessary part, so that the irradiation surface of the subject can be irradiated and photographed with a small amount of light emission. As a result, the power consumption of the mobile phone can be reduced to extend the life of the limited capacity battery and enable long-term use.
- FIG. 6 is a perspective view showing still another example of the combined optical element according to the embodiment of the present invention and the illumination apparatus using the same.
- the combined optical element 6 differs from the above combined optical element 2 in that, for example, the incident surface 7 is formed in a rhombus shape and the irradiated surface of the object is irradiated in a rhombus shape.
- the other component is the same as the illuminating device of the said embodiment, description is abbreviate
- the combined optical element 6 of the present embodiment is a first optical element that effectively condenses light in the horizontal direction 14 of the irradiation surface, and a second optical element that effectively condenses light in the vertical direction 15. It is constructed by superposing two types of lenses of the optical element as described below.
- any one of the first optical element and the second optical element for example, the first optical element is disposed at an angle of 45 ° with respect to the horizontal direction 14 when viewed from the optical axis direction.
- the first optical element and the second optical element arranged at an angle are superimposed so that the incident surface 3 of each optical element has the same height (flat surface).
- a combined optical element 6 having, for example, a rhombic shape shown in FIG. 6 having an exit surface 4 in which the overlapping portion of the first optical element and the second optical element is a lens is formed.
- the point light source 1 such as an LED chip disposed close to the combined optical element 6 emits light
- the light on the optical axis 8 vertically enters the incident surface 7 of the combined optical element 2 And go straight out of the exit surface 4 of the combined optical element 6.
- the light spread in a circular shape from the optical axis 8 enters the incident surface 7 of the combined optical element 6 from an oblique direction and is refracted in the direction of the optical axis 8. Light emerges from face 4.
- the incident surface 7 of the combined optical element 6 is in the shape of a rhombus because one of the, for example, the first optical elements is inclined by 45 °. Therefore, the light emitted from each of the four output surfaces 4 divided by the two diagonal lines 5c and 5d is emitted in a shape close to the shape of a rhombus.
- the irradiation surface of the subject can be irradiated in a rhombic shape.
- the lighting device of the present invention is not built in to a mobile phone, but may be external, and can be implemented in the same manner.
- the irradiation surface of the subject is not limited to the aspect ratio (4: 3), and may be a screen aspect ratio, a pixel aspect ratio, or a high definition screen.
- a point light source is not limited to an LED chip, For example, if it is an element which light-emits, it can be used similarly.
- the incident surface of the combination optical element is a flat surface
- the present invention is not limited to this.
- the incident surface of the combined optical element may be, for example, a concave or convex surface centered on the optical axis.
- the shape of the incident surface of the combined optical element the shape of a rectangle or a rhombus has been described as an example, but the present invention is not limited to this.
- any irradiation surface such as a square or an ellipse may be formed by changing the dimensions of the first optical element or the second optical element, the curvature of the exit surface, or the overlapping angle.
- the combined optical element of the present invention includes a first optical element that condenses light in one direction on the irradiation surface, and a second optical element that condenses light in another direction, and the first optical element
- the incident surface of the second optical element is made to be the same surface and superimposed, and the exit surface is formed only by the overlapping portion.
- the light from the point light source can be condensed on the irradiation surface, and the light can be effectively used.
- a compact but bright illumination device can be realized.
- the power consumption of the photographing device provided with the lighting device can be lowered, the life of the battery can be extended.
- the curvature R satisfying the condition of a ⁇ b and 0 ⁇ R ⁇ a / 2 is provided in the diagonal cross section on the exit surface of the optical element.
- the combination optical element is disposed at a position close to the point light source. Thereby, all the light emitted by the point light source 1 can be made to enter into the combined optical element.
- the present invention is widely used in DSCs, cellular phones, video cameras, etc., and can be widely applied as illumination devices etc. that illuminate a subject brightly.
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Abstract
Description
以下に、本発明の実施の形態における組み合わせ光学素子およびそれを用いた照明装置について、図1から図6を用いて説明する。
2,6 組み合わせ光学素子
2A 第1光学素子
2B 第2光学素子
3,7,25 入射面
4,26 出射面
5a,5b,5c,5d 対角線
8 光軸
9 基板
10 ソケット
11 辺
12 円弧
13 弓形状部分
14 水平方向
15 垂直方向
16 照射面
17 外装体
18 ボタン
19 レリーズボタン
20 ディスプレイ
21 電子カメラ
22 ストロボ装置
23 LED光源
24 光学レンズ
27 照明装置
Claims (5)
- 照射面上の一方向の光を集光する第1光学素子と、別の一方向の光を集光する第2光学素子と、を備え、
前記第1光学素子と第2光学素子の入射面を同一面にして重ね合わせ、重なり合った部分のみで出射面を形成する組み合わせ光学素子。 - 前記第1光学素子および前記第2光学素子は、シリンドリカルレンズである請求項1に記載の組み合わせ光学素子。
- 前記組み合わせ光学素子の前記出射面上の対角線断面部において、四角形状の前記組み合わせ光学素子の一辺の長さをaとし、隣接する辺の長さをbとした場合に、a≦b、0<R<a/2を満足する曲率Rを設けたことを特徴とする請求項1に記載の組み合わせ光学素子。
- 請求項1に記載の組み合わせ光学素子が、点光源に近接した位置に配置された照明装置。
- 前記第1光学素子の集光方向と前記第2光学素子の集光方向が直角であり、照射面がアスペクト比である請求項4に記載の照明装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/502,179 US20120281420A1 (en) | 2010-10-26 | 2011-10-24 | Combined optical element and lighting device including the same |
CN2011800043849A CN102597610A (zh) | 2010-10-26 | 2011-10-24 | 组合光学元件和具备该组合光学元件的照明装置 |
Applications Claiming Priority (2)
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JP2010-239259 | 2010-10-26 | ||
JP2010239259A JP2012094310A (ja) | 2010-10-26 | 2010-10-26 | 照明装置 |
Publications (1)
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WO2012056670A1 true WO2012056670A1 (ja) | 2012-05-03 |
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PCT/JP2011/005924 WO2012056670A1 (ja) | 2010-10-26 | 2011-10-24 | 組み合わせ光学素子とそれを備えた照明装置 |
Country Status (4)
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US (1) | US20120281420A1 (ja) |
JP (1) | JP2012094310A (ja) |
CN (1) | CN102597610A (ja) |
WO (1) | WO2012056670A1 (ja) |
Families Citing this family (2)
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CN104595847B (zh) * | 2013-10-30 | 2018-04-10 | 赛恩倍吉科技顾问(深圳)有限公司 | 透镜 |
JP6729627B2 (ja) * | 2018-04-20 | 2020-07-22 | 日亜化学工業株式会社 | 光源モジュール |
Citations (2)
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JP2003294910A (ja) * | 2002-04-08 | 2003-10-15 | Sanyo Electric Co Ltd | 光学素子および光源装置 |
JP2006196569A (ja) * | 2005-01-12 | 2006-07-27 | Seiko Epson Corp | 発光素子 |
Family Cites Families (16)
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US4548469A (en) * | 1984-06-07 | 1985-10-22 | Mitsubishi Rayon Co., Ltd. | Rear projection screen |
US7054068B2 (en) * | 2001-12-03 | 2006-05-30 | Toppan Printing Co., Ltd. | Lens array sheet and transmission screen and rear projection type display |
US8294992B2 (en) * | 2003-11-18 | 2012-10-23 | Merlin Technologies, Inc. | Projection-receiving surface |
CN100449351C (zh) * | 2003-11-18 | 2009-01-07 | 莫林技术有限公司 | 可变光阵列和该可变光学阵列的制作方法 |
JP2006330631A (ja) * | 2005-05-30 | 2006-12-07 | Miraial Kk | 背面投射型スクリーン |
CN100510785C (zh) * | 2005-06-03 | 2009-07-08 | 索尼株式会社 | 蝇眼透镜片及制造方法、透射型屏幕、背投型图像显示装置 |
JP2007012323A (ja) * | 2005-06-28 | 2007-01-18 | Cheil Ind Co Ltd | 面光源装置及び液晶表示装置 |
EP1855151B1 (en) * | 2006-05-10 | 2013-02-20 | Samsung Display Co., Ltd. | Optical plate, method of manufacturing optical plate, backlight assembly and liquid crystal display device |
CN103257452B (zh) * | 2006-06-27 | 2016-08-03 | Nlt科技股份有限公司 | 显示面板,显示装置和终端装置 |
JPWO2008050763A1 (ja) * | 2006-10-27 | 2010-02-25 | 日本ゼオン株式会社 | 直下型バックライト装置 |
JP2009037162A (ja) * | 2007-08-03 | 2009-02-19 | Panasonic Corp | 円筒成形品、レンズ鏡筒、カメラおよび射出成形用金型 |
JP5347399B2 (ja) * | 2008-06-30 | 2013-11-20 | 富士通株式会社 | 照明装置及び電子機器 |
TWI418855B (zh) * | 2008-08-28 | 2013-12-11 | Ind Tech Res Inst | 多變曲率光學模組 |
JP2010067415A (ja) * | 2008-09-09 | 2010-03-25 | Stanley Electric Co Ltd | Led照明灯具 |
CN101936502A (zh) * | 2009-06-30 | 2011-01-05 | 富准精密工业(深圳)有限公司 | 透镜、发光二极管模组及其应用的照明装置 |
US7948678B1 (en) * | 2010-02-06 | 2011-05-24 | Merlin Technologies, Llc | Four-region catadioptric tile |
-
2010
- 2010-10-26 JP JP2010239259A patent/JP2012094310A/ja active Pending
-
2011
- 2011-10-24 CN CN2011800043849A patent/CN102597610A/zh active Pending
- 2011-10-24 US US13/502,179 patent/US20120281420A1/en not_active Abandoned
- 2011-10-24 WO PCT/JP2011/005924 patent/WO2012056670A1/ja active Application Filing
Patent Citations (2)
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JP2003294910A (ja) * | 2002-04-08 | 2003-10-15 | Sanyo Electric Co Ltd | 光学素子および光源装置 |
JP2006196569A (ja) * | 2005-01-12 | 2006-07-27 | Seiko Epson Corp | 発光素子 |
Also Published As
Publication number | Publication date |
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CN102597610A (zh) | 2012-07-18 |
US20120281420A1 (en) | 2012-11-08 |
JP2012094310A (ja) | 2012-05-17 |
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