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    • 41. 发明专利
    • BEAM SHAPING OPTICAL SYSTEM
    • JPS60175018A
    • 1985-09-09
    • JP3088784
    • 1984-02-20
    • ASAHI OPTICAL CO LTD
    • MARUYAMA KOUICHI
    • G02B13/08G02B13/10G02B27/09
    • PURPOSE:To eliminate deviaton between optical axes of the incidence-side system and the exit-side system and to relax requirements of working and attaching precisions by providing such angle of incidence that the incident light and the exit light are parallel with each other when an incident optical beam is made incident at a certain angle on one face. CONSTITUTION:In the case shown in the figure, this optical system has a beam width conversion function in the Z direction when this optical system is used at such angle of incidence that the incident light and the exit light are parallel with each other. That is, this optical system has such angle of incidence that the incident light and the exit light are parallel with each other when the incident optical beam is made incident at a certain angle on one face. By this optical system, a beam shaping optical system is obtained without deviation between optical axes of the incidence-side system and the exit-side system neither severe requirements of working and attaching precisions with respect to spherical aberration.
    • 46. 发明专利
    • Optical system
    • 光学系统
    • JP2007183308A
    • 2007-07-19
    • JP2006000047
    • 2006-01-04
    • Olympus Corpオリンパス株式会社
    • KENNO KOKICHI
    • G02B17/08G02B13/06G02B13/08G02B13/10G02B27/22G03B21/14
    • PROBLEM TO BE SOLVED: To provide an optical system for projecting a stereoscopic image display screen to all azimuth directions, wherein focusing to clearly project or form the image can be performed, irrespective of a projection image distance.
      SOLUTION: Regarding the optical system for forming the image from the full 360° azimuth direction on a conical image surface 3 or projecting the image displayed on the conical display screen 3 in the full 360° azimuth direction, and also, including at least one rotational-symmetrical reflection surface 2 taking the rotational center axis 1 of the image surface or the display screen 3 as the rotational symmetric axis, the focusing is performed by shifting and adjusting the image surface or the display screen 3 in the direction of the rotational center axis 1.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于将立体图像显示屏幕投影到所有方位方向的光学系统,其中可以执行聚焦以清楚地投影或形成图像,而与投影图像距离无关。 解决方案:关于用于在圆锥形图像表面3上从整个360°方位角方向形成图像的光学系统或者以360度全方位方向投影显示在锥形显示屏3上的图像,并且还包括在 将图像表面的旋转中心轴1或显示屏3作为旋转对称轴的至少一个旋转对称反射面2,通过在图像表面或显示屏3的方向上移动和调整图像表面或显示屏3来进行聚焦 旋转中心轴1.版权所有(C)2007,JPO&INPIT
    • 47. 发明专利
    • Optical scanning device
    • JP3483834B2
    • 2004-01-06
    • JP2000194338
    • 2000-06-28
    • 三星電機株式会社
    • 鳳濬 兪
    • B41J2/44B41J2/47G02B13/00G02B13/10G02B13/18G02B26/10G02B26/12H04N1/113
    • B41J2/471G02B13/0005G02B26/125
    • An optical scanner comprises a laser diode which scans laser beam of definite wavelength; first optical element which patterns the beam scanned from the laser diode to an almost parallel beam; a slit where long hole has been formed in main scan direction parallel to optical axis which slit is located in front of the first optical element; second optical element located in front of the slit, having refractivity in direction perpendicular to optical axis; an optical deflector where reflection plane has been provided which reflects with designated angle the laser beam that has been scanned from the laser diode and has passed the first optical element, slit and second optical element; and third optical element whose main scan direction is nonspherical shape and subscan direction is made spherical surface which optical element spots to scanned surface the laser beam reflected from the optical deflector. So it makes effect that the birefringence influence is decreased and the metal mold machining and the injection molding are made easier by making both surfaces of third optical element to have slow curvature shapes having relatively few inflection points. And it achieves effect that performance deterioration according to errors in assembling and environmental variation of temperature and humidity etc. by way of making refractivity of both surfaces of lens in main scan direction to be similar.
    • 48. 发明专利
    • OPTICAL SCANNER
    • JP2001066536A
    • 2001-03-16
    • JP2000194338
    • 2000-06-28
    • SAMSUNG ELECTRO MECH
    • YU HOSHUN
    • B41J2/44B41J2/47G02B13/00G02B13/10G02B13/18G02B26/10G02B26/12H04N1/113
    • PROBLEM TO BE SOLVED: To facilitate the working of a metallic mold and injection molding and to reduce the influence of double refraction by making both surfaces of a 3rd optical device have gentle shape where inflection points are comparatively few. SOLUTION: This scanner is equipped with a laser diode 10 emitting a laser beam having specified wavelength, and a 1st optical device 20 shaping the emitted beam to nearly parallel beams is positioned ahead of the diode 10. A slit 30 where a slot is formed in a main scanning direction parallel with an optical axis is positioned ahead of the device 20, then a 2nd optical device 40 having refractivity in a subscanning direction perpendicular to the optical axis is positioned ahead of the slit 30. A light deflector 60 equipped with a reflection surface 61 reflecting the laser beam passing through the device 40 at a specified angle toward a surface to be scanned 50 is positioned ahead of the device 40. Then, the 3rd optical device 70 which casts the laser beam as a spot on the surface 50 and is especially made aspherical in the main scanning direction and spherical in the subscanning direction is positioned between the deflector 60 and the surface 50.
    • 49. 发明专利
    • MECHANISM FOR SWITCHING FINDER VISUAL FIELD FRAME
    • JPH11119298A
    • 1999-04-30
    • JP28352397
    • 1997-10-16
    • NIKON CORP
    • OWASHI MASAOIIJIMA SHUJI
    • G03B13/04G02B13/10G02B23/14
    • PROBLEM TO BE SOLVED: To make a holding member compact and to prevent a turning member from being detached from the holding member by allowing the holding member to hold the turning member by a second engagement means at a position separated from the engagement means when the turning member is set at a second position. SOLUTION: The mechanism for switching finder visual field frame is provided with the turning member 1 turned around a finder optical path and the holding member 2 holding the turning member 1. Besides, it is provided with the engagement means la and 2a allowing the holding member 2 to hold the turning member 1 at the position separated from the engagement means when the turning member 1 is set at the second position. When the turning member 1 is turned with respect to the holding member 2, the projecting part 1a thereof is displaced while being brought into slidable contact with the slidable contact surface 2a of the holding member 2. Thus, even when the holding member 2 is made compact and the turning member 1 is constituted so that engagement amount between the turning member 1 and the engagement means at the second position is reduced in comparison with the engagement amount between them at a first position, the turning member is not easily detached from the holding member 2.