公开(公告)号：US09297987B2

公开(公告)日：2016-03-29

申请号：US14467533

申请日：2014-08-25

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

Inventor： Mark Oskotsky ,  Shawn Reven ,  Michael J. Russo, Jr.

IPC: G02B13/04 ,  G02B13/18 ,  G02B9/60 ,  G02B13/00 ,  G02B7/02

CPC classification number: G02B13/04 ,  G02B7/028 ,  G02B9/60 ,  G02B13/0045 ,  G02B13/18

Abstract: A wide field optically athermalized orthoscopic lens system includes, in order from object to image, a first lens having a negative power, a second lens having a positive power, a third lens group having a positive power, a fourth lens having a positive power and a fifth lens having a negative power. The third lens group includes two lenses having, in order, a first lens with positive power and a second lens with negative power. The powers, shapes, Abbe dispersion values and temperature coefficients of refractive indices of the lenses are selected such that the lens system is athermalized, orthoscopic and achromatized over a wide (e.g. >140° C.) temperature range.

Abstract translation: 宽场光学无热式化的正射镜透镜系统包括从物体到图像的顺序，具有负光焦度的第一透镜，具有正光焦度的第二透镜，具有正光焦度的第三透镜组，具有正光焦度的第四透镜;以及 具有负功率的第五透镜。 第三透镜组包括依次具有正光焦度的第一透镜和具有负光焦度的第二透镜的两个透镜。 选择透镜的功率，形状，阿贝分散值和折射率的温度系数，使得透镜系统在宽（例如> 140℃）的温度范围内被无热处理，无畸变和消色差。