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Patent Searching and Data


Title:
CAMERA
Document Type and Number:
Japanese Patent JP2018116291
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To shield or reduce light according to an actual situation with respect to light incident upon eyes of a photographer.SOLUTION: On the basis of both of subject luminance information obtained from a light metering sensor 25 detecting luminance of a subject observed by an optical finder 24 and pupil diameter information obtained from an infrared light sensor 28 detecting a pupil diameter of eyes E of a photographer observing the subject via the optical finder 24, an eyepiece shutter 23 shields light with respect to a ray flux emerging from the optical finder 24 or a variable dimmer filter 21 reduces light with respect to the ray flux.SELECTED DRAWING: Figure 1

Inventors:
KATO TAKUYA
Application Number:
JP2018036763A
Publication Date:
July 26, 2018
Filing Date:
March 01, 2018
Export Citation:
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Assignee:
NIKON CORP
International Classes:
G03B11/04; G03B13/02; G03B19/12; H04N5/225; H04N5/232
Domestic Patent References:
JP2000187263A2000-07-04
JP2008245105A2008-10-09
JPH07327161A1995-12-12
JPH05333405A1993-12-17
JPH06332040A1994-12-02
Foreign References:
US20120249898A12012-10-04
CN1773362A2006-05-17
Attorney, Agent or Firm:
Fuyuki Nagai
Naomasa Shiraishi