Patent EP0655640A1 successfully refreshed from Google Patents.
EP0655640A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Finder
Assignee: Canon Inc
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Filing: 1994-11-28
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Granted: —
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Expires: 2014-11-28
Abstract
Abstract A finder has display means for displaying an image, and a finder optical system for observing the image therethrough. The spacing between the display means and the whole of the finder optical system is relatively varied to thereby effect the adjustment of the field of view.
Inventors
- 👤 Hideo C/O Canon Kabushiki Kaisha Yokota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 04:16
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; A; A61; A61B; A61B3/00; A61B3/10; A61B3/113; G03; G03B; G03B13/00; G03B13/02; G03B2213/00; G03B2213/02; G03B2213/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A finder device including: display means for displaying an image; and a finder optical system for observing said image therethrough; wherein a spacing between said display means and the whole of said finder optical system is varied to thereby effect diopter adjustment.
Claim 2
Dependent Claim
43 words
A finder device according to Claim 1, wherein said finder optical system has a plurality of lenses and a reflecting member disposed between said lenses for reflecting light from an eye, and a sensor for receiving the light reflected from said reflecting member.
Claim 3
Dependent Claim
38 words
A finder device according to Claim 1, satisfying the following condition: H/f > 0.27, where H is the length of said display means in a horizontal direction, and f is the focal length of said finder optical system.
Claim 4
Dependent Claim
38 words
A finder device according to Claim 2, satisfying the following condition: H/f > 0.27, where H is the length of said display means in a horizontal direction, and f is the focal length of said finder optical system.
References Cited (Backward Citations)
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