公开(公告)号：US10782509B2

公开(公告)日：2020-09-22

申请号：US16131845

申请日：2018-09-14

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Mark L Oskotsky ,  Michael J Russo, Jr. ,  Daniel Engheben ,  Erik L Hugel ,  Shawn C Reven ,  Vincent Lipari ,  Jerry Ma ,  Yueli Zhang

IPC: G02B13/02 ,  G02B9/62 ,  G02B13/00 ,  G02B13/18 ,  G02B27/00

Abstract: An orthoscopic, apochromatic lens is suitable for deployment such as on aerial platforms provides distortion less than 0.2% over a full field of view of more than 60° with F # less than 6.5 and focal length greater than 3″, and in embodiments greater than 5″. Embodiments are apochromatic from 500 to 950 nm to within 7 microns. Embodiments have an overall length of less than 7″. The lens includes five optical groups with an aperture stop between the second and third groups. The optical groups have one, one, two, one and one optical element each, as ordered from the object to the image plane, and have positive, negative, positive, positive, and negative optical powers, respectively. Embodiments are telephoto. In embodiments the focal length is temperature invariant within 0.0015 inches from 0° C. to 40° C.