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121. 发明专利

JP2012168449A Optical sheet, surface light source device and liquid crystal display device 有权
标题翻译：光学片，表面光源装置和液晶显示装置
公开(公告)号：JP2012168449A
公开(公告)日：2012-09-06
申请号：JP2011030948
申请日：2011-02-16
申请人： Dainippon Printing Co Ltd , 大日本印刷株式会社
发明人： KURODA TSUYOSHI , KOJIMA HIROSHI , KITANO KEIKO
IPC分类号： G02B5/04 , F21S2/00 , F21V5/00 , F21V5/02 , F21V5/04 , F21Y103/00 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide an optical sheet having excellent scratch resistance that can prevent scratches of the sheet itself when the optical sheet having an optical element surface such as a prism is disposed adjacent to other members or to the same sheet, and to provide a surface light source device and a liquid crystal display device using the sheet.SOLUTION: An optical sheet 10 includes unit optical elements 2 arranged on one surface 1p of a main body 1 and a backside face Pm as an exposed face on the other surface 1q. The hardness He of an optical element face Pe and the hardness Hm of the backside face Pm, in terms of pencil hardness specified by JIS K5600-5-4 (1999) under the conditions of 1000 g load and 1 mm/s velocity, are specified to satisfy that the hardness Hm is in a level of B or higher and (hardness Hm)≥(hardness He). More preferably, when a unit hardness level higher in the pencil hardness scale is denoted by +1, the hardness levels of the above faces are controlled to satisfy (hardness He)+3≥(hardness Hm)≥(hardness He)+2. Two of the optical sheets may be stacked adjoining to each other in the same direction of top and back faces. The optical sheet is used for a surface light source device and a liquid crystal display device.
摘要翻译：要解决的问题：为了提供一种具有优异的耐划伤性的光学片，当具有诸如棱镜的光学元件表面的光学片邻接于其它构件或相同的片材布置时，可以防止片本身的划伤，并提供使用该片材的表面光源装置和液晶显示装置。解决方案：光学片10包括布置在主体1的一个表面1p上的单元光学元件2和作为另一个表面1q上的暴露面的背面Pm。根据JIS K5600-5-4（1999）规定的铅笔硬度，在1000g负荷和1mm / s速度的条件下，光学元件面Pe的硬度He和背面Pm的硬度Hm分别为规定为满足硬度Hm为B以上的水平（硬度Hm）≥（硬度He）。更优选的是，当铅笔硬度标度中的单位硬度水平为+1时，上述面的硬度水平被控制为满足（硬度He）+3≥（硬度Hm）≥（硬度He）+2。两个光学片可以在顶面和背面的相同方向上彼此相邻地堆叠。光学片用于表面光源装置和液晶显示装置。版权所有（C）2012，JPO＆INPIT

122. 发明专利

JP2011209414A Optical sheet, optical element, surface light source device, transmission type display device, and light-emitting device 审中-公开
标题翻译：光学片，光学元件，表面光源装置，透射型显示装置和发光装置
公开(公告)号：JP2011209414A
公开(公告)日：2011-10-20
申请号：JP2010075213
申请日：2010-03-29
申请人： Dainippon Printing Co Ltd , 大日本印刷株式会社
发明人： MAENISHI TOMOKO , GOISHIBARA SATOSHI , KOJIMA HIROSHI
IPC分类号： G02B5/04 , F21S2/00 , F21V5/00 , F21V5/02 , F21Y103/00 , G02B5/28 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide an optical sheet capable of securing expected light-emitting characteristics or light-emitting characteristics close to the expected light-emitting characteristics.SOLUTION: The optical sheet 30 includes a body 32 and a plurality of unit prisms 35 which are a plurality of unit prisms arranged side by side on one surface 32a of the body, each of the plurality of unit prisms 35 linearly extending in a direction crossing the arrangement direction of the plurality of unit prisms 35. The unit prism is made of an ionizing radiation curable resin and includes at least one plane surface. The optical sheet has antistatic performance. The angular distribution of brightness which is measured in the other surface of the body in such a state that a luminous flux advancing in parallel with the normal direction of the body is incident on the plane surface of the unit prism and is shown by a graph having a vertical axis showing the brightness and a horizontal axis showing a measured angle satisfies a prescribed condition.
摘要翻译：要解决的问题：提供一种能够确保预期的发光特性或发光特性接近于期望的发光特性的光学片。解决方案：光学片30包括主体32和多个单位棱镜35，是在本体的一个表面32a上并排布置的多个单位棱镜，多个单位棱镜35中的每一个在与多个单位棱镜35的排列方向相交的方向上线性延伸。单位棱镜由电离辐射固化树脂，并且包括至少一个平面。光学片具有抗静电性能。在与主体的法线方向平行的光束入射到单位棱镜的平面上的状态下，在身体的另一个表面中测量的亮度的角度分布由具有示出亮度的纵轴和表示测量角度的水平轴满足规定条件。

123. 发明专利

JP2002236201A LENS SHEET AND DISPLAY DEVICE HAVING THE SAME 失效
公开(公告)号：JP2002236201A
公开(公告)日：2002-08-23
申请号：JP2001031661
申请日：2001-02-08
申请人： DAINIPPON PRINTING CO LTD
发明人： KOJIMA HIROSHI , OISHI EIJI , ARAKAWA FUMIHIRO
IPC分类号： G02B3/00 , G02F1/1335 , G03B21/62 , G03B21/625
摘要： PROBLEM TO BE SOLVED: To solve problems of a lens sheet having lenticular lenses or so-called fly-eye lenses arranged that it is difficult to improve the front luminance and image contrast as well as the viewing angle. SOLUTION: The lens layer 2 of the lens sheet is formed as a mixture of lenses 2 having high luminance lenses and lenses 2b having a wide viewing angle. In the lens 2a having high luminance, the luminance measured in the direction apart by 40 deg. from the normal direction is =0.7 time as the luminance measured in the normal direction.

124. 发明专利

JP2002172722A TRANSPARENT MATERIAL AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002172722A
公开(公告)日：2002-06-18
申请号：JP2000369029
申请日：2000-12-04
申请人： DAINIPPON PRINTING CO LTD
发明人： HATTORI SHUJI , ARAKAWA FUMIHIRO , KOJIMA HIROSHI
IPC分类号： G02B5/02 , B32B5/18 , G02B1/11 , G02B1/111
摘要： PROBLEM TO BE SOLVED: To provide a transparent material with which an optimum thickness and optimum voids can be easily controlled without problem of compatibility of adhesive properties and an antireflection effect, maintaining an optical effect such as a sufficient antireflection effect or the like for a long time. SOLUTION: The transparent material comprises a transparent base material, and a micropore layer disposed on at least one surface of the base material and having many micropores each having an opening on the surface. In this case, the base material is integrally formed with the micropore layer, and the micropores each has an interior wider than the opening.

125. 发明专利

JP2001004814A PRISM SHEET, FORMING DIE THEREOF, AND MANUFACTURE OF THE FORMING DIE 失效
公开(公告)号：JP2001004814A
公开(公告)日：2001-01-12
申请号：JP17115499
申请日：1999-06-17
申请人： DAINIPPON PRINTING CO LTD
发明人： NAITO NOBUO , KOJIMA HIROSHI
IPC分类号： B29C33/42 , G02B5/04
摘要： PROBLEM TO BE SOLVED: To provide a prism sheet with good appearance in which fine stripes of the prism are hardly visually confirmed as noise from the appearance by periodically changing the height of the crest and/or the depth of the valley bottom top part of a unit prism. SOLUTION: A prism layer 12 is formed of a prism surface consisting of three unit prisms 12a-12c regularly arranged. Specifically, one pattern consisting of unit prisms 12a, 12b, 12c, 12b, 12a is repeated to form one prism layer 12. The unit prisms 12a-12c have different heights of the crests and the depths of the valleys, respectively. In this example, the difference is set to 1 μm, and the space from a mountain to the next mountain is set to 50 μm. A forming die 13 is a die for forming the prism layer 12. Although copper is used as the material in this example, synthetic resin, ceramics and the like are usable in addition to metal such as chromium or iron. The reversed form of the prism layer 12 is formed on the forming die 13.

126. 发明专利

JPH1138509A REFLECTION TYPE SCREEN 失效
公开(公告)号：JPH1138509A
公开(公告)日：1999-02-12
申请号：JP13651798
申请日：1998-05-19
申请人： DAINIPPON PRINTING CO LTD
发明人： KOJIMA HIROSHI , ARAKAWA FUMIHIRO , NAITO NOBUO
IPC分类号： G03B21/60
摘要： PROBLEM TO BE SOLVED: To make a reflection type screen used for a video projector, etc., wide in angle of visibility, high in luminance and ease to see. SOLUTION: This reflection type screen 10 is constituted of a prism sheet 12 in which a light diffusing layer 18 diffusing a projected image is formed on a surface 16A, and plural stripe-state prisms 20 constituted of optically transparent resin, whose cross section is an isosceles triangle and which has a fixed apex angle and fixed side length, are arrayed to be extended in a perpendicular direction on a back surface 16B, and a black light absorbing sheet 14 which is opposed to the prism group on the back surface 16B of the prism sheet 12 and whose opposed surface substantially absorbs transmitted light; and the sheet 14 is arranged in parallel with the sheet 12, so that the wide angle of visibility and the high luminance is obtained.

127. 发明专利

JPH08286279A TRANSMISSION TYPE PROJECTION SCREEN 失效
公开(公告)号：JPH08286279A
公开(公告)日：1996-11-01
申请号：JP9062295
申请日：1995-04-17
申请人： DAINIPPON PRINTING CO LTD
发明人： SEKIGUCHI HIROSHI , KOJIMA HIROSHI
IPC分类号： G03B21/62
摘要： PURPOSE: To provide a polygonal transmission type projection screen having a narrow joint part and excellent flatness, without the deterioration in an image. CONSTITUTION: This transmission type projection screen is constituted in such a manner that plural screen units 1, 1 are arrayed in the horizontal direction of a picture surface and provided with a supporting frame 4 arranged on the upper sides of the respective screen units 1, 1 elastic springs 2 provided in plural places of the supporting frame 4, to hang each screen sheet 1 and adjusting means (31 and 41a) capable of vertically or horizontally moving the springs 2 with respect to the supporting frame 4 and the respective screen units 1, 1 are mutually joined in such a manner that the side end surfaces are butted against each other.

128. 发明专利

JPH08152685A TRANSMISSION TYPE PROJECTION SCREEN 失效
公开(公告)号：JPH08152685A
公开(公告)日：1996-06-11
申请号：JP29640694
申请日：1994-11-30
申请人： DAINIPPON PRINTING CO LTD
发明人： SEKIGUCHI HIROSHI , KOJIMA HIROSHI
IPC分类号： G03B21/62 , G03B21/625
摘要： PURPOSE: To thin a joint part where a video is not displayed and to always obtain the excellent video without the interference of video light by coupling the bonding part of a screen sheet and a partition plate through a linear member. CONSTITUTION: The thin linear member 31 is embedded in the bonding part 12 of the screen sheets 11A and 11B, and fixed on the partition plate 21. The thin member made of metal such as a piano wire or a stainless wire or made of resin such as a nylon wire is used as the linear member 31. Metal such as iron or stainless or synthetic resin is used for the partition plate 21. The linear member 31 is fixed on the partition plate 21 by interposing and attaching the linear member 31 between the partition plate 21 and another fixing member 41. Thus, even when the screens 11A and 11B are warped or distorted because of the change of temperature and humidity, the screens 11A and 11B and the partition plate 21 are not separated and the excellent video is always obtained.

129. 发明专利

JPH07241919A BLADE STAGE FOR CUTTING LINEAR FRESNEL LENS 失效
公开(公告)号：JPH07241919A
公开(公告)日：1995-09-19
申请号：JP6214994
申请日：1994-03-08
申请人： DAINIPPON PRINTING CO LTD
发明人： WATANABE ISOROKU , NAKAMAE SATOSHI , KOJIMA HIROSHI
IPC分类号： G02B3/08 , B23B21/00 , B29D11/00
摘要： PURPOSE:To shorten the time for a process for manufacturing a mold for a linear Fresnel lens and simplify the process by fixing the edge of a blade with a symmetrical shape on right and left at the rotational center of a blade-fixing stage and fixing the blade fixing stage on a rotating round table rotated by means of a specified numeri cal control apparatus. CONSTITUTION:A carrying stage 4 for a lathe is moved to a specified position of the end part of a roll-like body l to be cut and the angle is set by means of a rotating round table 5 rotated by means of a numerical control apparatus and the edge of a cutting blade is fixed in a cutting blade 3 holder 10 of a blade fixing stage 12 by using cutting blade fixing screws 11 and 11 in such a way that the edge of the cutting blade 3 is fitted to the center of the round table 5. Then, the carrying stage 4 for the lathe is moved to perform cutting of a mold channel and retreating and the carrying stage 4 for the lathe is moved to the next mold channel and the same angle setting, cutting and retreating of the cutting blade 3 and the movement of the carrying stage 4 for the lath to the next mold channel are repeated. In addition, the work is repeated symmetrically to central position up to a specified position of the end part of the opposite side of the roll-like body l to be cut to obtain a mold for a linear Fresnel lens.

130. 发明专利

JPH0682917A TRANSMISSION TYPE SCREEN AND ITS PRODUCTION 失效
公开(公告)号：JPH0682917A
公开(公告)日：1994-03-25
申请号：JP25368692
申请日：1992-08-28
申请人： DAINIPPON PRINTING CO LTD
发明人： SEKIGUCHI HIROSHI , KOJIMA HIROSHI
IPC分类号： G03B21/62
摘要： PURPOSE:To suppress the chipping of lenticular lenses without making the pitch of joined parts larger than the pitch of the other parts by joining screen sheets by the cut faces inclined with light exit surfaces within non-effective parts. CONSTITUTION:The joined screen sheet 20 is constituted by forming projecting parts 26 on the light exit side of non-light exit parts 22 and providing these parts with light absorption layers 24. The cut surfaces 25A, 25b which couple the valley parts C of the projecting parts 26 and the valley parts A of lens elements 21 nearest the light inlet side and incline with the light exit surfaces are joined in the joined parts by adhesives, etc. The valley parts C of the projecting parts 26 are the end parts of the joined parts 27 and, therefore, the light absorption layers 24 are not damaged at the time of carrying out the joining operation. The joined parts 27 are provided with an allowance in their width to prevent the protrusion of the adhesives or tacky adhesives. The light exit side ends 27b of the joined parts 27 are made perpendicular to the light exit surface of the joined screen sheet 20 and, therefore, the joined parts 27 are invisible and obscure.

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