TW227050B - A non-mechanical camera shutter and aperture application method and apparatus - Google Patents

A non-mechanical camera shutter and aperture application method and apparatus

Info

Publication number
TW227050B
TW227050B TW82110948A TW82110948A TW227050B TW 227050 B TW227050 B TW 227050B TW 82110948 A TW82110948 A TW 82110948A TW 82110948 A TW82110948 A TW 82110948A TW 227050 B TW227050 B TW 227050B
Authority
TW
Taiwan
Prior art keywords
liquid crystal
setting
bias voltage
operation mode
aperture
Prior art date
Application number
TW82110948A
Other languages
Chinese (zh)
Inventor
Shyi-Yuan Horng
Original Assignee
Ind Tech Res Inst
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 Ind Tech Res Inst filed Critical Ind Tech Res Inst
Priority to TW82110948A priority Critical patent/TW227050B/en
Application granted granted Critical
Publication of TW227050B publication Critical patent/TW227050B/en

Links

Abstract

A non-mechanical camera shutter and aperture application method andapparatus consists of: 1. choosing one of the operation modes as below by user; (1) automatic operation mode: first executing the detection of film ASA sensitivity or setting, then from the detected light luminance to decide an appropriate bias voltage applied to liquid crystal and transformation period; (2) dual operation mode: first executing the detection of film ASA sensitivity or setting, then selecting the setting of shutter or aperture by user to decide an appropriate bias voltage applied to liquid crystal and transformation period; (3) manual operation mode: from the setting of shutter and aperture by user to decide an appropriate bias voltage applied to liquid crystal and transformation period; 2. according to the applied bias voltage decided by the chosen operationmode to change the light transmission ratio of liquid crystal as theaction of camera shutter; according to the transformation period ofapplied electric field decided by the chosen operation mode to changethe light transmission time of liquid crystal as the action of cameraaperture.
TW82110948A 1993-12-21 1993-12-21 A non-mechanical camera shutter and aperture application method and apparatus TW227050B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW82110948A TW227050B (en) 1993-12-21 1993-12-21 A non-mechanical camera shutter and aperture application method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW82110948A TW227050B (en) 1993-12-21 1993-12-21 A non-mechanical camera shutter and aperture application method and apparatus

Publications (1)

Publication Number Publication Date
TW227050B true TW227050B (en) 1994-07-21

Family

ID=51348414

Family Applications (1)

Application Number Title Priority Date Filing Date
TW82110948A TW227050B (en) 1993-12-21 1993-12-21 A non-mechanical camera shutter and aperture application method and apparatus

Country Status (1)

Country Link
TW (1) TW227050B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI385478B (en) * 2006-11-03 2013-02-11 Hon Hai Prec Ind Co Ltd Optical shutter and camera module with the same
US8822902B2 (en) 2011-12-14 2014-09-02 Industrial Technology Research Institute Optical apparatus having adjustable pinhole by adjusting the transparence of a liquid crystal switch and method using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI385478B (en) * 2006-11-03 2013-02-11 Hon Hai Prec Ind Co Ltd Optical shutter and camera module with the same
US8822902B2 (en) 2011-12-14 2014-09-02 Industrial Technology Research Institute Optical apparatus having adjustable pinhole by adjusting the transparence of a liquid crystal switch and method using the same

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees