Catoptric anastigmatic afocal optical system
    1.
    发明授权
    Catoptric anastigmatic afocal optical system 失效
    光谱分析光学系统

    公开(公告)号:US3674334A

    公开(公告)日:1972-07-04

    申请号:US3674334D

    申请日:1971-01-04

    Inventor: OFFNER ABE

    CPC classification number: G02B17/0636 G02B17/0626 G02B17/0631

    Abstract: A CATOPTRIC ANASTIGMATIC AFOCAL OPTICAL SYSTEM IS FORMED BY TWO CONCAVE PARABOLOIDAL REFLECTORS OF DIFFERENT POWERS AND A CONVEX HYPERBOLOIDAL REFLECTOR EACH ADAPTED TO RECEIVE AND FOCUS RADIANT ENERGY. A PARABOLOIDAL REFLECTOR AND THE HYPERBOLOIDAL REFLECTOR HAVE THEIR AXES OPTICALLY COINCIDENT AND ARE POSITIONED WITH THE REAL FOCUS OF THIS PARABOLOIDAL REFLECTOR AT THE VIRTUAL FOCUS OF THE HYPERBOLOIDAL REFLECTOR. THE AXIS OF THE OTHER PARABOLOIDAL REFLECTOR IS OPTICALLY COINCIDENT WITH THE AXIS OF THE HYPERBOLOIDAL REFLECTOR AND ITS REAL FOCUS IS COINCIDENT WITH THE REAL FOCUS OF THE COMBINATION OF THE FIRST PARABOLOIDAL REFLECTOR AND THE HYPERBOLOIDALL REFLECTOR. BY HAVING THE SUM OF THE POWERS OF ALL THE REFLECTOR. BY HAVING THE SUM ORDER ABERRATIONS EXCEPT DISTORTION ARE ZERO, IF THE SUM IS NOT ZERO, THIRD ORDER ABERRATIONS, OTHER THAN FIELD CURVATURE AND DISTORTION, ARE ZERO.

    8.
    发明专利
    未知

    公开(公告)号:DE2230002A1

    公开(公告)日:1973-01-11

    申请号:DE2230002

    申请日:1972-06-20

    Inventor: OFFNER ABE

    Abstract: A catoptric system for forming in accurate micro detail an image of an object at unit magnification with high resolution is provided by convex and concave spherical mirrors arranged with their centers of curvature coinciding at a single point. The mirrors are arranged to produce at least three reflections within the system and they are used in the system with their axial conjugates at said point and to provide two off axis conjugate areas at unit magnification in a plane which contains the center of curvature, the axis of the system being an axis normal to the latter plane and through said point. This combination is free from spherical aberration, coma and distortion and, when the algebraic sum of the powers of the mirror reflecting surfaces utilized is zero, the image produced is free from third order astigmatism and field curvature.

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