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81. 发明公开

EP1688665A4 SURFACE LIGHT SOURCE DEVICE AND APPARATUS USING THIS DEVICE 有权
标题翻译： AREA形光源设备，在本设备中使用的设备
公开(公告)号：EP1688665A4
公开(公告)日：2007-06-13
申请号：EP04819375
申请日：2004-11-24
申请人： OMRON TATEISI ELECTRONICS CO
发明人： HIROTA KAZUHIDE , SHINOHARA MASAYUKI , MAKUTA ISAO
IPC分类号： F21V8/00 , G02B6/00 , F21Y101/02 , G02B5/02
CPC分类号： G02B6/0016 , G02B6/0001 , G02B6/0021 , G02B6/0033 , G02B6/0038 , G02B6/0061
摘要： Partial dark spots in a surface light emitting area is eliminated by a diffuser, and a luminance uniformity throughout the surface light emitting area is enhanced. A surface light source device comprising a point-light-source-form light emitting unit consisting of LEDs or the like, and a light guide plate (13), the light emitting unit being disposed to face the light incident surface (19) of the light guide plate (13). The light incident surface (19) is provided alternately with first diffusion patterns (22) and second diffusion patterns (23). The first diffusion pattern (22) is provided with a V-groove (22B) at the depth surface of a rectangular recess (22A) formed in the light incidence surface (19). The second diffusion pattern (23) is a V-groove provided in the light incident surface (19). When a virtual line (26) parallel to a line drawn from the light emitting unit to the corner of the surface light emitting area of the light guide plate (13) is drawn from the end of the recess (22A), the V-grooves (22B) and the second diffusion patterns (23) are provided so as not to extend beyond the virtual line (26).

82. 发明公开

EP1229353A4 REFLECTING MEMBER AND LIGHT REFLECTING METHOD 审中-公开
标题翻译：反射元件和方法的反射光的
公开(公告)号：EP1229353A4
公开(公告)日：2006-10-11
申请号：EP00974891
申请日：2000-11-09
申请人： OMRON TATEISI ELECTRONICS CO
发明人： MANABE KATSUYUKI , AOYAMA SHIGERU , FUNAMOTO AKIHIRO , SHINOHARA MASAYUKI
IPC分类号： B29C33/38 , G02B5/08 , G02B5/09 , G02B27/00 , G02F1/1335 , B29C39/26 , G09F9/00 , H04M1/02
CPC分类号： B29C33/3878 , G02B1/11 , G02B5/08 , G02B27/0018 , G02F1/133553
摘要： A unit reflecting area (13) comprising one or more projections/recesses (17) is formed on the reflecting plate (11). Light is made to fall on the reflecting plate (11), and part of the light reflected from the unit reflecting area (13) is outputted toward the whole ringlike predetermined area (output area (14)) defined on a predetermined flat surface. The output area (14) is so defined that the light specularly reflected from a liquid crystal panel (18) overlaps with a discoloration area (15) as little as possible. Such a reflecting plate used for a display of reflection type or of semitransmission type has an improved efficiency of use of incident light by decreasing the useless light reflected in the useless direction.

83. 发明专利

JP2003150073A IMAGE DISPLAY UNIT AND FRONT LIGHT 审中-公开
公开(公告)号：JP2003150073A
公开(公告)日：2003-05-21
申请号：JP2001266570
申请日：2001-09-03
申请人： OMRON TATEISI ELECTRONICS CO
发明人： SHINOHARA MASAYUKI , MAKUTA ISAO , UENO YOSHIHIRO
IPC分类号： G02F1/1335 , F21V8/00 , F21Y101/02 , G02B6/00 , G02F1/13357 , G09F9/00
摘要： PROBLEM TO BE SOLVED: To improve the contrast of a reflection type display unit. SOLUTION: Optical patterns in a sectionally V-groove shape which are provided on a light guide plate 32 are slanted to the traveling direction of light in the light guide plate 32 and light reflected by the optical patterns 39 is reflected obliquely to the reverse surface side.

84. 发明专利

JPH11329039A SURFACE LIGHT SOURCE DEVICE 失效
公开(公告)号：JPH11329039A
公开(公告)日：1999-11-30
申请号：JP6048299
申请日：1999-03-08
申请人： OMRON TATEISI ELECTRONICS CO
发明人： ISAMOTO KEIJI , SHINOHARA MASAYUKI , AOYAMA SHIGERU , NAITO RYOSUKE
IPC分类号： G09F9/00 , F21V8/00 , G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide a high light emitting efficiency by forming reflecting surfaces forming an irregular pattern of surfaces crossing each other at a predetermined angle, and providing the crossing surfaces on a surface of a light guide plate at a right angle so that a flat surface, which equally divides the crossing angle into two, passes through a light source. SOLUTION: A reflecting surface forming an irregular pattern 15 is formed into a prism shape. Surfaces of a rectangular prism 15a crossing each other are provided so that a flat surface, which equally divide the cross angle into two, passes a spot light source 13 and crosses a surface of a light guide plate 12 at a right angle. The irregular pattern 15 is formed so that a light source side surface thereof is formed at 45 degree in relation to a surface of the light guide plate 12, and an angle formed by the rectangular prism 15a and the surface of the light guide plate 12 is set at 33.75 degree. When the light enters the rectangular prism 15a at a right angle, the light is reflected to the opposite direction, and even in the case where the rectangular prism 15a is inclined, if it is not inclined from over, the total reflection angle is maintained so as to reflect the incident light. Consequently, the total reflection is generated by the rectangular prism 15a.

85. 发明专利

JPH11260141A POLARIZATION CONVERTING OPTICAL ELEMENT AND LINEAR POLARIZATION ROTATING METHOD 失效
公开(公告)号：JPH11260141A
公开(公告)日：1999-09-24
申请号：JP8046798
申请日：1998-03-11
申请人： OMRON TATEISI ELECTRONICS CO
发明人： ISAMOTO KEIJI , AOYAMA SHIGERU , SHINOHARA MASAYUKI
IPC分类号： F21V9/14
摘要： PROBLEM TO BE SOLVED: To realize a polarization converting device capable of converting natural light to one directional linearly polarized light with high efficiency of nearly 100% by a small optical system. SOLUTION: When the light from a light source is incident on a polarization beam splitter 22, P polarized light penetrates the polarization beam splitter 22 to come to the front, and S polarized light is reflected to the side of the polarization beam splitter 22. Polarization rotating element 23 is set on the side of the polarization beam splitter 22, and the polarized direction of the S polarized light is rotated by angle of 90 degrees by the polarization rotating element 23, then the S polarized light is converted to P polarized light, thus it is emitted in the direction parallel to that of the other P polarized light.

86. 发明专利

JPH11260134A LIGHTING SYSTEM 失效
公开(公告)号：JPH11260134A
公开(公告)日：1999-09-24
申请号：JP6243598
申请日：1998-03-13
申请人： OMRON TATEISI ELECTRONICS CO
发明人： ISAMOTO KEIJI , SHINOHARA MASAYUKI , AOYAMA SHIGERU
IPC分类号： F21V8/00
摘要： PROBLEM TO BE SOLVED: To effectively adjust the luminance without changing the voltage to be applied to a light-emitting element by adjusting the total outgoing energy of a surface light source by controlling a number of lighting of light-emitting elements. SOLUTION: An LED array 3 comprises the LEDs 3b arranged by 3 raws ×8 columns, and the lighting on and out of each LED 3b is controlled by a controller. The high driving voltage is applied to each LED 3b. For example, the outgoing luminance can be made half in comparison with a case when all of LEDs 3b are lighted, by lighting the LEDs 3b by each row and making the number of lighting of the LEDs 3b half. The lighting is optionally performed every line or zigzag. That is, by applying the vector radiation coupling type surface light generating source device, the distribution of the luminance of the outgoing light from the lighting system is hardly affected by the change of the in-plane distribution caused by the lighting of a part of LEDs 3b, and any lighting distribution of the LED array 3 can be applied.

87. 发明专利

JPH11232920A SURFACE LIGHT SOURCE DEVICE AND LIGHT CAPTURE PORT MODULE FOR THE DEVICE 失效
公开(公告)号：JPH11232920A
公开(公告)日：1999-08-27
申请号：JP3079998
申请日：1998-02-13
申请人： OMRON TATEISI ELECTRONICS CO
发明人： ISAMOTO KEIJI , SHINOHARA MASAYUKI , AOYAMA SHIGERU
IPC分类号： F21V8/00 , G02B6/00 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide a surface light source required which manufacturing only a light capture port with high accuracy, capable of manufacturing a large-sized light guide plate with ease at a low cost, capable of uniformizing the luminance of irradiating light, and most suitable for a LED indoor lighting system by modularizing only a light capture port to the light guide plate, and manufacturing the same separately from the light guide plate. SOLUTION: A light capture port comprising a transparent medium for causing light to be incident from the end face of a light guide plate 2 is formed as a module 13 separately from the light guide plate 2. Thereby, the light capture port module 13 is only necessary to be made in required accuracy, the manufacturing of the light guide plate 2 is facilitated, and since the result a large size light guide plate 2 can be manufactured with ease at low cost. The shape of a boundary face between the light capture port module 13 and the light guide plate 2 is set, so that a ray irradiated from the light source is not allowed to be totally reflected from the boundary face.

88. 发明专利

JPH11232918A SURFACE LIGHT SOURCE DEVICE 失效
公开(公告)号：JPH11232918A
公开(公告)日：1999-08-27
申请号：JP5437498
申请日：1998-02-18
申请人： OMRON TATEISI ELECTRONICS CO
发明人： NAITO RYOSUKE , SHINOHARA MASAYUKI , AOYAMA SHIGERU
IPC分类号： F21V8/00
摘要： PROBLEM TO BE SOLVED: To suppress the nonuniformity of a luminance caused by the total reflection of light in a light guide plate through the edge of the light guide plate. SOLUTION: Among the bottom face of a light guide plate 42, a diffusion pattern 46 for irradiating light from a light-irradiating face in uniform luminance is provided in an effective area 58 (for example, an area corresponding to the screen of a liquid crystal display panel). A scattering pattern 63 is provided in a non-effective area 59 (for example, an area outside the screen of the liquid crystal display panel), so that the light entering the non-effective area 59 is prevented from being regularly reflected again onto the effective area 58.

89. 发明专利

JPH10269824A DIFFRACTION GRATING AND REFLECTION TYPE IMAGE DISPLAY DEVICE USING IT 失效
公开(公告)号：JPH10269824A
公开(公告)日：1998-10-09
申请号：JP9302397
申请日：1997-03-26
申请人： OMRON TATEISI ELECTRONICS CO
发明人： SHINOHARA MASAYUKI , AOYAMA SHIGERU
IPC分类号： F21V8/00
摘要： PROBLEM TO BE SOLVED: To prevent diffracted light from being colored into rainbow colors, prevent a screen from being colored, prevent the occurrence of moire fringes, prevent the diffusion of an image from being increased, and prevent a light source such as the sun and the background from being displayed on the screen by modulating the grating period of a diffraction grating pattern with a smooth pattern having the period larger than the grating period. SOLUTION: The diffraction grating pattern 51 of the fundamental period Λ0 is modulated by a smooth function (pattern) 52 having a period P longer than the fundamental period Λ0 to obtain this diffraction grating 41, the grating period is changed in a range of 15-25 μm, and the modulation period P is set at 80 μm. The modulation period P is 1/2 or below of the pixel period, and the occurrence of moire fringes on a screen is prevented. The diffraction angle is not fixed, and the diffracted light is rarely colored into rainbow colors. When light is diffracted by the diffraction grating 41, the light with the same wavelength is dispersed in response to the modulation degree of the grating period, and the light with different wavelengths is hardly overlapped into rainbow colors.

90. 发明专利

JPH10254391A PICTURE DISPLAY DEVICE 失效
公开(公告)号：JPH10254391A
公开(公告)日：1998-09-25
申请号：JP8188797
申请日：1997-03-14
申请人： OMRON TATEISI ELECTRONICS CO
发明人： SHINOHARA MASAYUKI , AOYAMA SHIGERU
IPC分类号： G02F1/1335 , G09F9/35
摘要： PROBLEM TO BE SOLVED: To couple both of a spatial optical modulation element and a plate optical element to be 1:1 so as to eliminate positional deviation between both elements and to prevent color slurring and the blurring of a picture element in the case of color display by optically coupling both elements through an unmagnified image formation element. SOLUTION: In this picture display device 36, three liquid crystal display panels 37 to 39 modulating the intensity of light beams of different colors are opposed. Namely, the picture display device 36 for color display is constituted by laminating the panel 37 using cyan liquid crystal, the panel 38 using magenta liquid crystal and the panel 39 using yellow liquid crystal and sticking the panels 37 to 39 through a transparent resin layer 40. The layer 40 is constituted of plural transparent resin layers having different refractive indexes and provided with the function of the unmagnified image formation element, and optically couples the position of the liquid crystal panel on the layer 40 and the position of the liquid crystal display panel thereunder to be 1:1.

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