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公开(公告)号：JP2004145249A
公开(公告)日：2004-05-20
申请号：JP2003057503
申请日：2003-03-04
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKEDA TAKASHI , YONEKUBO MASATOSHI
CPC classification number: G03B21/2013 , G03B21/008 , G03B21/2033 , G03B33/06 , H04N9/3155 , H04N9/3164
Abstract: PROBLEM TO BE SOLVED: To provide a small-sized high-luminance image display device which uses a tilt-mirror device and a projector equipped with the same. SOLUTION: An image display device includes a first color-ray light-source 10 for supplying a G-ray, a second color-ray light-source 20 for supplying an R-ray or B-ray, and a tilt-mirror device 30 having a plurality of movable mirror elements 31 being alternatively switchable between a first reflection position and a second reflection position. The first color-ray light-source 10 is arranged so that the G-ray is reflected in a predetermined direction L1 when the movable mirror elements 31 are located in the first reflection position, while the G-ray is reflected in a direction L2 when the movable mirror elements 31 are located in the second reflection position; and the second color-ray light-source 20 is arranged so that the R-ray or B-ray is reflected in the predetermined direction L1 when the movable mirror elements 31 are located in the second reflection position, while the R-ray or B-ray is reflected in a direction L3 when the movable mirror elements 31 are located in the first reflection position. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2003270587A
公开(公告)日：2003-09-25
申请号：JP2002070947
申请日：2002-03-14
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： UCHIKAWA DAISUKE , YONEKUBO MASATOSHI
Abstract: PROBLEM TO BE SOLVED: To further improve the utilization efficiency of light of an illuminator for supplying exit light to a light valve, etc., through an integrator.
SOLUTION: The outer side of an opening 22 on an incident side 20a of the integrator 20 of the illuminator 10 is provided with an outer mirror 60 which is flared to a collar shape to reflect the incident light 71a failed to be inputted to the opening 22 from a light source section 12 to return the light to a reflector 14 of the light source section 12 and to guide this light again to the opening 22 of the integrator 20. As a result, the utilization efficiency of the light can be further improved even if the size of the opening 22 is not increased.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：通过积分器进一步提高用于向光阀等供给出射光的照明器的光的利用效率。 解决方案：照明器10的积分器20的入射侧20a的开口22的外侧设置有外镜60，该外镜60向外扩张，以使入射光71a不能被输入 来自光源部分12的开口22将光返回到光源部分12的反射器14，并将光引导到积分器20的开口22。结果，光的利用效率可以是 即使开口22的尺寸没有增加，进一步提高。 版权所有（C）2003，JPO
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公开(公告)号：JP2002277617A
公开(公告)日：2002-09-25
申请号：JP2001074440
申请日：2001-03-15
Applicant: SEIKO EPSON CORP
Inventor： UCHIKAWA DAISUKE , YONEKUBO MASATOSHI , SEKI HIDEYA
IPC: G02B5/08 , G02F1/1335 , H04N5/72
Abstract: PROBLEM TO BE SOLVED: To provide a reflector which increases the light distributed in desired directions and has a high use efficiency of light and to provide a method for manufacturing the reflector. SOLUTION: In the reflector surface 21, a plurality of fine first basic forms 26 which are concave or convex and almost similar to one another are randomly arranged without overlapping and in the part where the first basic forms 26 are not arranged, a plurality of fine second basic forms 30 which are concave or convex, are tightly arranged. In the overlapped part of the first and second forms, the first basic form is preferentially formed. Thereby, a reflecting surface having no flat part while keeping the distributing performance for light of the first basic forms 26 can be formed and the use efficiency of light can be improved. The reflecting surface 21 can be mass-produced by preparing a gray mask from the spatial distribution data processed by the above method and by using photolithographic techniques.
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公开(公告)号：JP2002090511A
公开(公告)日：2002-03-27
申请号：JP2000285947
申请日：2000-09-20
Applicant: SEIKO EPSON CORP
Inventor： YONEKUBO MASATOSHI , SEKI HIDEYA , NOJIMA SHIGEO , NAGATA MITSUO
IPC: G02B5/08 , G02B5/02 , G02F1/1335 , G09F9/00
Abstract: PROBLEM TO BE SOLVED: To provide a mass-producible reflective panel having higher light utilizing efficiency according to its use and a method for producing the panel. SOLUTION: Since a liquid crystal panel attached to a cell phone or the like does not require a so wide angle of a visual field, the reflective panel has a reflective surface 21 obtained by disposing plural fine reflective shapes 28 similar to a concave or convex basic shape 26 having different shapes in the vertical and horizontal directions at random without changing the vertical and horizontal directions. The reflective surface 21 turns light from both sides to the seeing direction of a front user and can enhance light utilizing efficiency. Such reflective panels each having the fine complex three-dimensional structure can be mass-produced by forming space distribution data, forming a gray mask on the basis of the data and using photolithography.
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公开(公告)号：JP2001249228A
公开(公告)日：2001-09-14
申请号：JP2001013358
申请日：2001-01-22
Applicant: SEIKO EPSON CORP
Inventor： TAKEKOSHI TARO , YONEKUBO MASATOSHI , TAKEDA TAKASHI , ARIMURA TOSHIO
IPC: G02B5/00 , G02B1/11 , G02B1/115 , G02B5/08 , G02B5/18 , G02B5/30 , G02B5/32 , G02B6/12 , G02B7/00 , G11B7/123 , G11B7/135 , G11B11/105
Abstract: PROBLEM TO BE SOLVED: To provide an optical head of high reliability with little variation by aging and temperature while realizing the simplification and non-adjustment of the assembly process, and to realize its miniaturization by a large functional combination. SOLUTION: Functions, such as an optical path length regulating function which makes optical path length of outward trip light flux differ from optical path length of return trip light flux, a polarized light separating function for detecting a magneto-optical signal, or a light flux reflecting function for guiding a part of light flux to a second photodetector for a light-emitting power detection, are assembled on an integral optical member. Thus, the optical member constitutes the cover of package of the optical head, and houses a photodetector and a light emitting element integrally.
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Patent Agency Ranking
公开(公告)号：JP2000105345A
公开(公告)日：2000-04-11
申请号：JP27622098
申请日：1998-09-29
Applicant: SEIKO EPSON CORP
Inventor： YONEKUBO MASATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a simply structured actuator used as a driving source of an optical switching element capable of operating at a speed higher than that of a liquid crystal. SOLUTION: An operation space 32 capable of almost sealing up an operation liquid 33 is arranged, so that the operation liquid 33 can partially be warmed with a heater 36 in contact with the operation liquid 33. In this actuator 30, the operation liquid 33 is heated up and forms an air bubble 39 to raise the inner pressure, therefore, a displaceable thin film 35 is displaced upward to drive a switching part 11. Therefore, it is possible to provide a switching element 10 capable of operating at a high speed with a simple structure.
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公开(公告)号：JPH11311746A
公开(公告)日：1999-11-09
申请号：JP12133998
申请日：1998-04-30
Applicant: SEIKO EPSON CORP
Inventor： YONEKUBO MASATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide an optical switching device capable of actualizing a compact image display device which has high light use efficiency and can displays a light and sharp color image. SOLUTION: The optical switching device 30 is constituted by stacking a microlens array 40 having microlens units 43 on an optical switching element array 50 having micromirror elements 52 and arranging the micromirror elements 52r and 52g so that each of them corresponds to one microlens unit 43. Luminous flux 80 which is made incident on an incidence-side microlens unit 41 and slightly different in angle for each of the primary colors is converted on the corresponding micromirror element 52 and projection light 82 is projected on the exit-side microlens unit 42. Therefore, color-separated light can be controlled by a single plate and the light loss due to a color filter and temporal light loss at the time of time division are eliminated to provide an optical switching device which can display a light color image.
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公开(公告)号：JPH1196587A
公开(公告)日：1999-04-09
申请号：JP25902097
申请日：1997-09-24
Applicant: SEIKO EPSON CORP
Inventor： SEKI HIDEYA , KOEDA SHUJI , YONEKUBO MASATOSHI
IPC: G11B7/135
Abstract: PROBLEM TO BE SOLVED: To provide an optical head of simple constitution capable of recording and reproducing with optical disks of both of DVD standards and CD standards. SOLUTION: The optical head 7 is constituted by using a light reflection unit 7 provided with a thin film 34 on a substrate 30 formed with rugged patterns 35 on its front surface as a rising mirror. This light reflection unit 7 is usable as a mirror finished surface as well unless a potential difference is applied on the substrate 30 and the thin film 34 and, therefore, the processing of the DVD is possible. If, on the other hand, the potential difference is applied, the pattern 35 appears and decreases the reflection area. The substantial numerical aperture of the objective lens 8 may thus be lowered by reflecting a laser beam with the area suitable for the processing of the CD. Since the optical head 10 of this example does not require the increase of the optical element from the optical head to be exclusively used for the CD or DVD and, therefore, the constitution thereof is sampled and the energy attenuation of the laser beam may be prevented.
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公开(公告)号：JPH10289472A
公开(公告)日：1998-10-27
申请号：JP9778297
申请日：1997-04-15
Applicant: SEIKO EPSON CORP
Inventor： YONEKUBO MASATOSHI , ARIMURA TOSHIO
Abstract: PROBLEM TO BE SOLVED: To provide an optical head and an optical memory device which can reproduce a high density optical recording medium of the next generation while keeping interchangeability for an optical recording medium of a write-once type of the existing pigment system. SOLUTION: A main lobe 203 is made not to receive outside light by two light shielding sections; 201, 202. A center part of the main lobe 203 and major part of a side lobe 204 receive light and contribute to reproduction of a signal. The direction 205 of short sides of two light shading sections 201, 202 is substantially defined as the direction of arrangement of data pits of an optical recording medium. Since a side lobe part includes information of many shortest bits in a converged part of light returned from the optical recording medium, and the outside part of the main lobe includes many harmful components such as waveform interference, track interference or the like, characteristics are improved in this way.
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公开(公告)号：JP2552109B2
公开(公告)日：1996-11-06
申请号：JP25012885
申请日：1985-11-08
Applicant: SEIKO EPSON CORP
Inventor： YONEKUBO MASATOSHI , KOGURE SHIGERU
IPC: G02B7/09 , G11B7/08 , G11B7/085 , G11B7/09 , G11B11/105
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