Automatic focusing apparatus for use with a plurality of lenses,申请号US19790029498-传众专利搜索

Automatic focusing apparatus for use with a plurality of lenses

申请公布号：US4246476(A)

申请号：US19790029498

申请日期：1979.04.12

申请公布日期：1981.01.20

申请人：

HONEYWELL INC.

发明人：STAUFFER, NORMAN L.

分类号：G01C3/06;G01B11/00;G01C3/00;G02B7/28;G02B7/34;G03B7/099;G03B13/36;(IPC1-7):H01J40/14;G03B3/10

主分类号：G01C3/06

摘要：A radiation responsive detector arrangement for use with a range determination system. A first plurality of detector pairs are mounted to receive radiation from a lenslet array which produces a plurality of images of the exit pupil of a first objective lens whose f number is equal to or less than a predetermined value and a second plurality of detector pairs are mounted to receive radiation from the lenslet array which produces a plurality of images of the exit pupil of a second objective lens whose f number is greater than the predetermined value. Switch means is provided so as to use the outputs of the first plurality of detector pairs in the range determination system when the first objective lens is employed and to use the outputs of the second plurality of detector pairs in the range determination system when the second objective lens is employed.