Claims
- 1. A reticle for use in a radiant energy detection system, said reticle comprising:
- a transparent substrate;
- a patterned layer of aluminum oxide overlying said substrate, said patterned layer having a rough surface; and
- an opaque film of titanium overlying said patterned layer of aluminum oxide and contacting said rough surface.
- 2. The reticle of claim 1 wherein said transparent substrate comprises sapphire.
CROSS REFERENCE TO RELATED APPLICATION
This application pertains to an invention disclosed in assignee's co-pending application Ser. No. 599,254, filed July 25, 1975 and identified as Navy Case 56894.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,285,422 |
Aug 1972 |
UK |