发明名称 Autofocus cine camera having automatic variable speed focusing
摘要 A photographic camera having an adjustable focus lens is provided with an automatic focus control system to focus said lens at one focusing rate if the lens focusing movement necessary to focus said lens to the proper subject-in-focus position is greater than a predetermined magnitude, and at another focusing rate if said necessary lens focusing movement is equal to or less than said predetermined magnitude.
申请公布号 US4309098(A) 申请公布日期 1982.01.05
申请号 US19800137635 申请日期 1980.04.07
申请人 POLAROID CORPORATION 发明人 SHENK, EDWIN K.
分类号 G01S7/529;G02B7/40;(IPC1-7):G03B3/10 主分类号 G01S7/529
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