公开(公告)号：US20240200755A1

公开(公告)日：2024-06-20

申请号：US18065976

申请日：2022-12-14

申请人： BAE Systems Information and Electronic Systems Integration Inc.

发明人： Matthew F. Kepler ,  Chris B. O'Brien

IPC分类号： F21V14/00 ,  F21V9/40 ,  F21V14/08 ,  G02B5/20

CPC分类号： F21V14/006 ,  F21V9/40 ,  F21V14/08 ,  G02B5/20

摘要： A filter assembly of an optical system. The filter assembly may include a first spool, a second spool, and a film filter that operably engages with the first spool and the second spool and the film filter having at least two filters that are different from one another. The filter assembly may also include a drive assembly that operably engages with one of the first spool, the second spool, and the film filter for moving at least one filter of the at least two filters into optical alignment with a focal plane sensor of the optical system. The film filter of the filter assembly may also be made from a flexible material that bends when wound about the first spool and the second spool.