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Patent Searching and Data


Title:
FINDER DEVICE, IMAGING DEVICE, AND CONTROL METHOD FOR FINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/087712
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a finder device that can measure the transmittance of an ND filter in real time, an imaging device, and a control method for the finder device. The finder device according to a first aspect of the present invention comprises: an optical finder for observing an optical image of a photographic subject using an eyepiece unit; a display device for displaying information; a half mirror disposed in a light path of the optical finder; an electronic variable ND filter inserted in the light path of the optical finder, further to the photographic subject side than the half mirror; a luminance information acquisition unit for acquiring luminance information of outside light; a luminance measurement unit for measuring the luminance of incident outside light; and a transmittance calculation unit that calculates, in real time, the transmittance of the electronic variable ND filter on the basis of the measured luminance and the acquired luminance information.

Inventors:
ISHIDA Kazuki (324 Uetake-cho 1-chome, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
Application Number:
JP2018/037672
Publication Date:
May 09, 2019
Filing Date:
October 10, 2018
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
G03B17/20; G03B7/099; G03B7/28; G03B11/00; G03B13/06; H04N5/225; H04N5/235
Domestic Patent References:
WO2012120952A12012-09-13
Foreign References:
JP2015233255A2015-12-24
JP2003078785A2003-03-14
JP2014048491A2014-03-17
JP2013088597A2013-05-13
Attorney, Agent or Firm:
NAKASHIMA Junko et al. (6F FFTP M0 BLDG, 1250 Takematsu Minamiashigara-sh, Kanagawa 11, 〒2500111, JP)
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