Optical: systems and elements – Compound lens system – Telescope
Patent
1993-07-02
1996-09-03
Nguyen, Thong Q.
Optical: systems and elements
Compound lens system
Telescope
359421, 359422, 354222, G02B 2300, G03B 1310
Patent
active
055529313
ABSTRACT:
A finder optical system includes a finder objective lens provided independent of a photographic objective lens, an image erecting unit for erecting an image formed by the finder objective lens, and an eyepiece. The distance from a surface, closest to an image, of the finder objective lens to a surface, closest to an object, of the eyepiece is changed and at the same time, the focal length of the eyepiece is also changed, thereby converting the state of ordinary photography into the state of panoramic photography. Thus, in the panoramic photography, aberration is favorably maintained and finder magnification is improved.
REFERENCES:
patent: 4131354 (1978-12-01), Hagiwana
patent: 4887109 (1989-12-01), Fujila et al.
patent: 4949107 (1990-08-01), Kilagrshi et al.
patent: 5021815 (1991-06-01), Harvey
patent: 5144349 (1992-09-01), Kalo et al.
patent: 5194886 (1993-03-01), Mukai et al.
patent: 5257055 (1993-10-01), Cho et al.
patent: 5321457 (1994-06-01), Imaizuul
Hideyuki Abe, "Making Of Picture Of Panoramic Photographic", Photographic Industries, Feb. 1991, p. 38 vol. 49, No. 2, Shashin Kogyo Publishing Co., Ltd.
Photographic Industires, Jan. 1992, pp. 42 & 45, vol. 50, No. 1, Shashin kogyo Publishing Co., Ltd.
Nguyen Thong Q.
Olympuus Optical Co., Ltd
LandOfFree
Finder optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Finder optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finder optical system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1955378