Lens system with selective image reversion
Abstract
Abstract A LENS SYSTEM WITH SELECTIVE IMAGE REVERSION INCLUDES A SYMMETRICAL OBJECTIVE LENS SYSTEM WHICH IS FIXEDLY SUPPORTED IN A HOUSING. A GENERALLY IMPERFORATE FRAME IS MOUNTED IN THE CENTER CROSS SECTION OF THE HOUSING FOR RECIPROCATION ALONG A LINE EXTENDING BETWEEN THE ELEMENTS OF THE LENS SYSTEM AND HAS A PAIR OF SLOTS FORMED IN IT WHICH EXTEND THE WIDTH OF THE LENS SYSTEM. AN IMAGE REVERSION SYSTEM COMPRISING FIRST, SECOND AND THIRD EXTERNAL REFLECTIVE SURFACES IS MOUNTED IN ONE OF THE SLOTS OF THE FRAME AND A TRANSPARENT MEMBER HAVING AN INDEX OF REFRACTION MATCHED TO THE OPTICAL CHARACTERISTICS OF THE IMAGE REVERSION SYSTEM IS MOUNTED IN THE OTHER SLOT. THE FRAME ALSO SUPPORTS A PLATE MOUNTED FOR ROTATION TO POSITION EITHER AN IMPERFORATE PORTION OR AN F:16 APERTURE OR AN F:22 APERTURE IN ALIGNMENT WITH THE TRANSPARENT MEMBER. STRUCTURE IS PROVIDED FOR NORMALLY POSITIONING THE TRANSPARENT MEMBER IN ALIGNMENT WITH THE LENS SYSTEM AND FOR RECIPROCATING THE FRAME TO SCAN THE IMAGE REVERSION SYSTEM THROUGH THE LENS SYSTEM AND THEREBY FORM AN INVERTED IMAGE.
Inventors
- 👤 H Giesecke
Bibliographic Details
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| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
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