Patent Number: 6,169,628

Title: Protective window for optical sight

Abstract: The invention comprises a protective window for an optical sight. In accordance with one embodiment of the invention, an optical sight (20) may comprise an optical component (182, 300) transmitting an image of a scene. A protective window (180, 430) may be disposed approximate to an internal side of the optical component (180, 300) to obstruct dirt from contacting the internal side of the optical component.

Inventors: Isbell; Wayne E. (Dallas, TX), Wallace; Robert E. (Garland, TX)

Assignee: Litton Systems, Inc.

International Classification: G02B 23/00 (20060101); G02B 23/12 (20060101); G02B 27/00 (20060101); G02B 023/00 (); F41G 001/38 ()

Expiration Date: 01/02/2018