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公开(公告)号：JPS6363137A
公开(公告)日：1988-03-19
申请号：JP20650386
申请日：1986-09-02
Applicant: SEIKO EPSON CORP
Inventor： TAKEDA TAKASHI
Abstract: PURPOSE:To form an erasing elliptic spot on a recording film, and to obtain a tracking servo-signal without using a means for beam shaping, etc. for a servo-optical system by using a slit which can change a track direction and a NA ratio of the horizontal direction to the vertical direction of the track, and a beam shaping prism. CONSTITUTION:The titled optical head is provided with a semiconductor laser 1, a collimator lens 2 for forming parallel light beam which is emitted from the semiconductor laser 1, a beam shaping prism 3 for forming a beam to a true circle, a polarization beam splitter 8 for reflecting a reflected light from a recording film to a light detecting part 9, and a slit 15 for varying a spot formed on the recording film to an ellipse. In this case, a servo-signal of tracking is obtained by forming an erasing elliptic spot on the recording film by using a numerical aperture (N.A.) converter of an objective lens, radiating a far field pattern of a reflected light of the elliptic spot which has been formed on the recording film onto two-split photosensors and taking the differential of two-split photodiodes, respectively.
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公开(公告)号：JPS6333872A
公开(公告)日：1988-02-13
申请号：JP17797686
申请日：1986-07-29
Applicant: SEIKO EPSON CORP
Inventor： TAKEDA TAKASHI
IPC: H01L31/04
Abstract: PURPOSE:To protect an ITO film while coloring a solar cell almost not deteriorating the efficiency of the solar cell by forming a film reflecting light of only a narrow band of wavelength to a protective film attached onto ITO. CONSTITUTION:A film reflecting light of only a narrow band of wavelengths is provided to a protective film mounted on an ITO film (a transparent conductive film) 5. That is, since the carrier collection efficiency of a solar cell is not kept constant with respect to wavelengths and has a peak in collection efficiency, efficiency as the solar cell does not deteriorate remarkably and is kept within a practical range even when other wavelength zones are brought to the state of total reflection when the zones of efficient wavelengths of 500-600 nm are brought previously to a nonreflective state. When the peak of reflectivity to the wavelengths of the film is sharpened beforehand, efficiency is not lowered even between the wavelength zones of 500-600 nm, and the solar cell can be colored distinctly because the peak of reflectivity is steep.
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公开(公告)号：JPS62165754A
公开(公告)日：1987-07-22
申请号：JP751186
申请日：1986-01-17
Applicant: SEIKO EPSON CORP
Inventor： TAKEDA TAKASHI , YONEKUBO MASATOSHI , NEHASHI SATOSHI
IPC: G11B11/10 , G02B27/28 , G11B11/105 , G11B17/046
Abstract: PURPOSE:To improve S/N of a reproducing signal by providing a phase difference between S and P waves incident in a recording medium so as to make an elliptically polarized light incident in the recording face and bringing its transmitted light into a linearly polarized light. CONSTITUTION:The light irradiated from a semiconductor laser 1 is collimated by a collimator lens 2, reflected in a full reflection mirror 10 through a polarized beam splitter 3 and collected on a recording face of a recording medium 6 through an objective lens 5. The dielectric film comprising alternate multi-layer films is vapor-deposited on a glass in the mirror 10 and a phase difference is given to the S and P waves. Before a light is made incident in the recording face of the recording medium 6, the full reflection mirror 10 gives a phase difference to the S and P waves to convert the incident light into the elliptically polarized wave, then the polarized plane of the light transmitted through the recording face is rotated by the Faraday effect and becomes a linearly polarized light, the light is converted into light intensity change by a polarizer 7, a reproducing signal corresponding to the direction of magnetization on the recording film is obtained by a photo sensor 8 and the S/N is improved.
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公开(公告)号：JPS6234341A
公开(公告)日：1987-02-14
申请号：JP17480985
申请日：1985-08-08
Applicant: SEIKO EPSON CORP
Inventor： TAKEDA TAKASHI
IPC: G11B7/125
Abstract: PURPOSE:To detect stably a signal by placing transparent ceramics in front of a signal detecting photodiode, and feeding back a voltage corresponding to the variation of a luminous amount caused by an uneven reflectivity of a medium, etc., to a transparent ceramics plate. CONSTITUTION:A laser light which has been emitted from a semiconductor laser 1 is made parallel by a collimator lens 2, converted to a circularly polarized light by a 1/4 wavelength plate 4 through a beam splitter 3, stopped down by an objective lens 5, and reflected by a medium 6. Thereafter, its reflected light is made incident on the 1/4 wavelength plate 4 again, returned to a linearly polarized light and reflected by the beam splitter 3, made incident on a transparent ceramics plate 10, stopped down by a condensing lens 7 after erasing the variation of the luminous amount due to an uneven medium by said plate, and made incident on a photodiode 8.
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公开(公告)号：JP2017116690A
公开(公告)日：2017-06-29
申请号：JP2015251074
申请日：2015-12-24
Applicant: セイコーエプソン株式会社 , Seiko Epson Corp
Inventor： TAKAGI MASAYUKI , TOTANI TAKAHIRO , MIYAO TOSHIAKI , TAKEDA TAKASHI , KOMATSU AKIRA
CPC classification number: G02B27/0172 , G02B2027/0118 , G02B2027/013 , G02B2027/0178
Abstract: 【課題】外界光に起因する意図しない光が観察者に向かうことを抑制し、映像光の導光の状態を良好に維持できる虚像表示装置を提供すること。【解決手段】導光装置20により映像光を導光させるとともに外界光と映像光とを重複して視認させるシースルー型の構成を有するものであって、導光装置20は、周囲より形状が狭くなっている狭幅形状部20pにおいて、導光防止構造PSを設けていることで、外界光に起因する意図しない光の反射等を防ぐことで、当該光が観察者側に向かって導光されることを抑制している。【選択図】図3
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Patent Agency Ranking
公开(公告)号：JP2014157823A
公开(公告)日：2014-08-28
申请号：JP2014044969
申请日：2014-03-07
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKEDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a projector capable of displaying an image with unvaried hue even when an LED of each color has a variation in temperature coefficient in a projector that employs an illumination apparatus having a semiconductor light emitting element such as an LED as a light source.SOLUTION: In an illumination apparatus 10 of a projector 1, light intensity of illumination light 2 of each color from each of LEDs 11r to 11b of each color is sequentially detected by a common photoelectric conversion element 13, is sampled by a common sample hold circuit 31, and is fed back to drive circuits 12r to 12b of each color by each of comparator circuits 34r to 34b of each color. Since sampling system is made to be common with regard to the illumination light 2 of each color, individual differences of sampling systems may be removed, and even when each of the LEDs 11r to 11b of each color has a variation in temperature coefficient, a projector 1 may be provided which may display an image with unvaried hue.
Abstract translation: 要解决的问题：即使在使用具有诸如LED的半导体发光元件的照明装置的投影仪中，每种颜色的LED具有温度系数的变化的情况下，也可以提供一种能够显示具有不调色调的图像的投影仪。 光源。解决方案：在投影仪1的照明装置10中，通过公共光电转换元件13顺序地检测每种颜色的LED11r至11b的每种颜色的照明光2的光强度，通过公共 采样保持电路31，并且通过每种颜色的比较器电路34r至34b的每个反馈到每种颜色的驱动电路12r至12b。 由于采样系统对于每种颜色的照明光2是共同的，因此可以消除采样系统的个体差异，并且即使当每种颜色的每个LED 11r至11b都具有温度系数的变化时，投影仪 可以提供可以显示具有不变色调的图像的图1。
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公开(公告)号：JP2014102368A
公开(公告)日：2014-06-05
申请号：JP2012253929
申请日：2012-11-20
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKEDA TAKASHI , TOTANI TAKAHIRO , TAKAGI MASAYUKI , KOMATSU AKIRA , MIYAO TOSHIAKI
CPC classification number: G02B27/0172 , G02B2027/0141
Abstract: PROBLEM TO BE SOLVED: To provide a virtual image display device which can change the range of a recognizable image in response to the line of sight of a wearer by adjusting a luminous flux without increasing the size of the device and which allows the wearer to recognize an image in response to the line of sight.SOLUTION: In the virtual image display device, image light PL is composed of, for example, luminous flux components PL1 to PL5 each having a diameter of 3 mm or less, and is made to enter a pupil of an eye EY to form an image comprising a virtual image. By setting a position CP, where the chief rays of the luminous flux components PL1 to PL5 constituting the image light PL intersect one another, at a retina side than the position of the pupil of the eye EY, ranges of luminous flux components reaching the retina among the luminous flux components PL1 to PL5 can be changed in response to the movement of the eye. Thereby, when the line of sight of the wearer directs to a specific direction, the image light PL can be controlled in such a manner that, in response to the change of the line of sight, only an image light component from the specific direction reaches the retina RE of the eye EY.
Abstract translation: 要解决的问题：提供一种虚拟图像显示装置，其可以通过调节光通量而不增加装置的尺寸并且允许佩戴者识别而改变响应于佩戴者的视线的可识别图像的范围 响应于视线的图像。解决方案：在虚像显示装置中，图像光PL由例如直径为3mm以下的光通量分量PL1〜PL5构成，并使其进入 眼睛的瞳孔EY以形成包括虚拟图像的图像。 通过设置构成图像光PL的光束分量PL1〜PL5的主光线彼此相交的位置CP，在比眼睛EY的瞳孔的位置的视网侧，到达视网膜的光通量分量的范围 可以根据眼睛的移动来改变光通量分量PL1〜PL5。 因此，当佩戴者的视线指向特定方向时，可以以这样的方式控制图像光PL，即，响应于视线的变化，仅从特定方向的图像光分量到达 视网膜RE的眼睛EY。
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公开(公告)号：JP2013186230A
公开(公告)日：2013-09-19
申请号：JP2012050121
申请日：2012-03-07
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKEDA TAKASHI , TOTANI TAKAHIRO , KOMATSU AKIRA , TAKAGI MASAYUKI , MIYAO TOSHIAKI
CPC classification number: G02B27/0176 , G02B27/0172 , G02B2027/0156 , G02B2027/0178
Abstract: PROBLEM TO BE SOLVED: To provide a virtual image display device that enables eyesight adjustment for observing external light when image light and the external light are observed in parallel and can suppress an increase in size of the virtual image display device.SOLUTION: Two pieces of image light PL formed by light emission devices 10 and virtual image formation members 20 and two pieces of external light OL transmitted through eyesight adjustment members 30 and the virtual image formation members 20 can be observed in parallel in a see-through manner. In this case, in observation of the two pieces of external light OL, the eyesight adjustment members 30 enable eyesight adjustment according to visual acuity of a wearer. Accordingly, the wearer can observe the two pieces of external light OL without wearing instruments for eyesight adjustment such as spectacle. Therefore, an increase in size of a virtual image display device 100 can be suppressed.
Abstract translation: 要解决的问题：提供一种虚拟图像显示装置，其能够在图像光和外部光并行观察时观察外部光的视力调节，并且可以抑制虚拟图像显示装置的尺寸的增加。解决方案：两个 可以以透视的方式平行地观察由发光装置10和虚拟图像形成构件20形成的图像光PL和通过视力调节构件30和虚拟图像形成构件20透射的两个外部光OL。 在这种情况下，在观察两个外部光OL时，视力调节部件30能够根据穿戴者的视力进行视力调节。 因此，穿戴者可以观察两件外部光OL，而不用戴眼镜等视力调节器具。 因此，能够抑制虚像显示装置100的尺寸的增大。
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公开(公告)号：JP2013080038A
公开(公告)日：2013-05-02
申请号：JP2011218976
申请日：2011-10-03
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKAGI MASAYUKI , TOTANI TAKAHIRO , MIYAO TOSHIAKI , KOMATSU AKIRA , TAKEDA TAKASHI
CPC classification number: G02B27/0172 , G02B17/008 , Y10T29/49
Abstract: PROBLEM TO BE SOLVED: To provide a virtual image display device which suppresses generation of luminance spots, and a manufacturing method for the same.SOLUTION: In a second ridge line vicinity region RE2 on the side of a third reflection plane 21c among a ridge line part 21r extending between the third reflection plane 21c and a second reflection plane 21b, a mirror layer 25 has a thickness of 50 nm or more to perform impermeable reflection. Therefore, reduction of the reflectance of image light can be suppressed in the second ridge line vicinity region RE2 (namely, a peripheral part on the side of a light guide part B2 in the third reflection plane 21c), and generation of band-like luminance spots extending in the longitudinal direction is suppressed in an observed image. That is, in a virtual image display device, sufficient reflection can be secured even in a peripheral part near the boundary of the second reflection plane 21b in the third reflection plane 21c, and thus a bright image having few luminance spots can be displayed.
Abstract translation: 要解决的问题：提供抑制亮点产生的虚像显示装置及其制造方法。 解决方案：在第三反射面21c和第二反射面21b之间延伸的棱线部分21r中的第三反射面21c侧的第二脊线附近区域RE2中，镜面层25的厚度为 50nm以上进行不透水反射。 因此，可以抑制第二脊线附近区域RE2（即，第三反射面21c中的导光部分B2侧的周边部分）的图像光的反射率的降低，并且产生带状亮度 在观察图像中抑制沿纵向延伸的斑点。 也就是说，在虚拟图像显示装置中，即使在第三反射面21c中的第二反射面21b的边界附近的周边部分也能够得到充分的反射，因此能够显示亮度少的亮度图像。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2013037260A
公开(公告)日：2013-02-21
申请号：JP2011174638
申请日：2011-08-10
Applicant: Seiko Epson Corp , セイコーエプソン株式会社
Inventor： TAKAGI MASAYUKI , MIYAO TOSHIAKI , TOTANI TAKAHIRO , KOMATSU AKIRA , TAKEDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a virtual image display device that suppresses an occurrence of luminance unevenness and enhances utilization efficiency of illuminating light.SOLUTION: In a virtual image display device of one embodiment, an optical directivity changing section forms a non-uniform distribution with respect to directivity of image light GL emitted from an image display device. Accordingly, even when angles of light beams emitted from the image display device and effectively taken into eyes EY of an observer are greatly different from one another depending upon a position of the image display device, the image light GL that has the directivity in response to angular characteristics of such taking-in of the light beams can be formed, an occurrence of luminance unevenness can be suppressed and utilization efficiency of illuminating light can be enhanced.
Abstract translation: 要解决的问题：提供一种抑制亮度不均匀的发生并提高照明光的利用效率的虚像显示装置。 解决方案：在一个实施例的虚拟图像显示装置中，光学方向性改变部分相对于从图像显示装置发射的图像光GL的方向性形成不均匀的分布。 因此，即使根据图像显示装置的位置，从图像显示装置发射的光被有效地摄入观察者的眼睛EY的角度彼此大大不同，所以具有响应于图像显示装置的方向性的图像光GL 可以形成这种光束入射的角度特性，可以抑制亮度不均匀的发生，并且可以提高照明光的利用效率。 版权所有（C）2013，JPO＆INPIT
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