Title:
EXPOSURE CONTROLLER FOR ELECTRONIC DEVELOPING TYPE CAMERA
Document Type and Number:
Japanese Patent JP3222760
Kind Code:
B2
Abstract:
PURPOSE: To always accurately control exposure regardless of the characteristic of an electronic developing type recording medium such as sensitivity.
CONSTITUTION: The illuminance Is(0) of object light transmitted through the electronic developing type recording medium 30 is detected by a photometry sensor 51 when an exposure action is started. In the midst of the exposure action, the illuminance Is(t) of the object light transmitted through the medium 30 is detected by the sensor 51. When the ratio of Is(t)/Is(0) arrives at a reference value decided by the ratio of precise transmissivity Tg and transmissivity T(0) obtained when the exposure action is started, it is judged that the precise exposure is obtained and the exposure action with respect to the medium 30 is stopped.
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Inventors:
Harumi Aoki
Application Number:
JP8577996A
Publication Date:
October 29, 2001
Filing Date:
March 14, 1996
Export Citation:
Assignee:
Asahi Optical Co., Ltd.
International Classes:
G03B7/08; G02F1/13; G03G15/04; G03G15/043; H04N5/91; (IPC1-7): G03B7/08; G02F1/13; G03G15/04; G03G15/043; H04N5/91
Domestic Patent References:
| JP4211221A | ||||
| JP614262A |
Attorney, Agent or Firm:
Takashi Matsuura