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JPS6485481A - Incident light limiting device for image pickup device for vehicle - Google Patents

Incident light limiting device for image pickup device for vehicle

Info

Publication number
JPS6485481A
JPS6485481A JP62240783A JP24078387A JPS6485481A JP S6485481 A JPS6485481 A JP S6485481A JP 62240783 A JP62240783 A JP 62240783A JP 24078387 A JP24078387 A JP 24078387A JP S6485481 A JPS6485481 A JP S6485481A
Authority
JP
Japan
Prior art keywords
image pickup
light
light quantity
incident light
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62240783A
Other languages
Japanese (ja)
Inventor
Takatoshi Seko
Haruhiko Iizuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP62240783A priority Critical patent/JPS6485481A/en
Publication of JPS6485481A publication Critical patent/JPS6485481A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To finely control an incident light quantity at every minute image-pick- up surface without providing a separate light quantity detecting element as usual by controlling the light transmittance of a liquid crystal plate arranged at the front surface of the image pickup device based on an image pickup signal corresponding to the incident light quantity to each minute image pickup surface of the device. CONSTITUTION:A light transmission member 21, which is the aggregate of electrically independent transmission elements and each transmission element of which corresponds to the minute image pickup surface of an image pickup element 19, is provided at the front surface of the image pickup element 19, and a control circuit part 24 to control the light transmittance of the transmission element, to which a light transmission member 21 corresponds in accordance with an output signal from the image-pick-up element 19 is provided. Thus, the light quantity received with the minute image pickup surface is used as a feedback element, and the light transmission quantity of the corresponding light transmission member is controlled by a voltage value conforming to the light quantity.
JP62240783A 1987-09-28 1987-09-28 Incident light limiting device for image pickup device for vehicle Pending JPS6485481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62240783A JPS6485481A (en) 1987-09-28 1987-09-28 Incident light limiting device for image pickup device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62240783A JPS6485481A (en) 1987-09-28 1987-09-28 Incident light limiting device for image pickup device for vehicle

Publications (1)

Publication Number Publication Date
JPS6485481A true JPS6485481A (en) 1989-03-30

Family

ID=17064633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62240783A Pending JPS6485481A (en) 1987-09-28 1987-09-28 Incident light limiting device for image pickup device for vehicle

Country Status (1)

Country Link
JP (1) JPS6485481A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR890100791A (en) * 1989-11-28 1992-04-17 Copyguard Enterprises Automatically controlled video camera
US5216510A (en) * 1990-09-28 1993-06-01 Commissariat A L'energie Atomique Imaging device
WO1994005115A1 (en) * 1992-08-20 1994-03-03 Victor Hasselblad Ab Arrangement for reading and converting optical information to electronic representation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR890100791A (en) * 1989-11-28 1992-04-17 Copyguard Enterprises Automatically controlled video camera
US5216510A (en) * 1990-09-28 1993-06-01 Commissariat A L'energie Atomique Imaging device
WO1994005115A1 (en) * 1992-08-20 1994-03-03 Victor Hasselblad Ab Arrangement for reading and converting optical information to electronic representation

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