Title: Auto-focusing method used in optical lens of television camera
Application Number: 85109454 Application Date: 1985.12.31
Publication Number: 1001915 Publication Date: 1986.07.23
Approval Pub. Date: Granted Pub. Date: 1990.05.16
International Classifi-cation: G03B3/10,H04N5/232
Applicant(s) Name: Chang Chun Inst. of Posts Telecommunications Address:
Inventor(s) Name: Pu Zonggen
Attorney & Agent: REN YUHAI
Abstract:
     This kind of auto-focusing technique and method used in optical lens can solve some problems existing in prior art, such as poorness in dynamic tracking. serious in inertness and excessive requirement in picking up conditions etc. The method adopted in this invention is that the characteristic valuces on picking up can be handled and proccessed in real time by clousing autocontrol system, so as to arrive auti-focus. The advantages of this invention are to obtain the optimum focus under any picking up condition, to improve th quality of the reproduced picture and to advance in artistic effects. This invention is suitable for auto-focusing technology of the camera used in broadcasting TV and industrial TV.
Time: 7
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