公开(公告)号：US3711722A

公开(公告)日：1973-01-16

申请号：US3711722D

申请日：1958-07-28

Applicant: AMERICAN OPTICAL CORP

Inventor： KAVANAGH A

IPC: G01J1/04 ,  G01J1/06 ,  G02B3/06 ,  H01L31/00 ,  H01J3/14

CPC classification number: G01J1/06 ,  G01J1/0209 ,  G01J1/04 ,  G01J1/0411 ,  G01J1/0422 ,  G02B3/06 ,  G02B19/0014 ,  G02B19/0076 ,  H01L31/00

Abstract: 1. A light-collecting and detecting system comprising a lens having an annularly shaped toric refracting surface formed thereon in concentric relation to a central axis of said system, and in predetermined spaced relation to a preselected focal point on said axis, said lens having a second surface thereon transversely intersecting said axis substantially at said focal point, a layer of photosensitive material of relatively small size carried by said second surface adjacent said focal point, said annular refracting surface being, in all radial sections thereof, so disposed in offset relation to said axis and so spaced relative to said focal point and so convexly elliptically curved as to face outwardly in predetermined angular relation to said optical axis and simultaneously direct and concentrate substantially all of the light being received from corresponding parts of a conically shaped hollow annular object field of predetermined mean angular value and width onto said layer, whereby any material change in intensity in the light being received from any part of said annular object field will be detected by said photosensitive layer.

Abstract translation: 1.一种集光和检测系统，包括透镜，所述透镜具有形成在其上的环形复曲面折射表面，所述折射表面与所述系统的中心轴线同心，并且以与所述轴线上的预选焦点成预定间隔的关系，所述透镜具有 基本上在所述焦点处横向与所述轴线相交的第二表面，与所述焦点相邻的由所述第二表面承载的相对较小尺寸的感光材料层，所述环形折射表面在其所有径向部分中以与 所述轴线相对于所述焦点间隔开，并且如此凸出地椭圆形地弯曲成面向与所述光轴成预定角度关系的外侧，并且同时引导并集中从锥形中空环形物体场的相应部分接收的所有光 的预定平均角度值和宽度 由所述感光层检测出从所述环形物场的任何部分接收的光中的强度变化。