Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1998-08-18
1999-12-28
Sugarman, Scott J.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359631, 359633, G02B 2714
Patent
active
060089474
ABSTRACT:
The invention provides an optical system which is well corrected in terms of both curvature of field and coma at a field angle of about 120.degree. and a pupil diameter of about 15 mm and may be applied to both image pickup and ocular systems. Dioptric elements 11 are located the pupil plane side E and/or image plane side I of a concentric element 12 including two semitransparent surfaces 121 and 122, said two semitransparent surfaces 121 and 122 being concave on the pupil plane side E and located such that they transmit light at least once and reflect light at least once.
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patent: 5517366 (1996-05-01), Togino
patent: 5638219 (1997-06-01), Puerta et al.
patent: 5768039 (1998-06-01), Togino
Mack Ricky
Olympus Optical Co,. Ltd.
Sugarman Scott J.
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