发明名称 |
INFRARED OBJECTIVE LENS WITH TWO FIELDS OF VISION AND REMOTE APERTURE DIAPHRAGM |
摘要 |
FIELD: physics. ^ SUBSTANCE: objective has fixed positive first and last components between which there is a movable negative meniscus whose convex surface faces the image plane and a positive component. The first component contains a positive and a negative meniscus whose concave side faces the image plane. The last component is in form of two positive menisci whose convex surfaces face each other, and a negative meniscus whose concave side faces the image plane. The movable component includes a divergent and a convergent lens and a negative meniscus whose convex side faces the image plane lying tightly in front of the divergent lens of this component. The aperture diaphragm is placed between the objective lens and the image plane. The entrance pupil is superposed with the first surface of the objective lens. ^ EFFECT: exclusion of aspherical and diffraction optical elements, reduced diameter of the objective lens and distance from the aperture diaphragm to the image plane with maintenance of high aperture ratio, drop in magnification and image quality. ^ 8 dwg, 1 tbl |
申请公布号 |
RU2400784(C1) |
申请公布日期 |
2010.09.27 |
申请号 |
RU20090131779 |
申请日期 |
2009.08.21 |
申请人 |
UCHREZHDENIE ROSSIJSKOJ AKADEMII NAUK INSTITUT FIZIKI POLUPROVODNIKOV IM. A.V. RZHANOVA SIBIRSKOGO OTDELENIJA RAN |
发明人 |
KHATSEVICH TAT'JANA NIKOLAEVNA;TERESHIN EVGENIJ ALEKSANDROVICH |
分类号 |
G02B9/64;G02B13/14;G02B15/16 |
主分类号 |
G02B9/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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