1. On the mark

2. Fabrication Precision Fabrication

3. Coating R avg. < 5% @ 2.5-13µm. 0deg Adhesion per MIL-C-48497 Abrasion per MIL-C-48497 R avg. < 0.5% @ 3-5µm. 0deg Adhesion per MIL-C-48497 Abrasion per MIL-C-48497 R avg. < 0.5% @ 8-12µm. 0deg Adhesion per MIL-C-48497 Abrasion per MIL-C-48497

4. Coating (Non-Radioactive) Coating Specification S1: Broad AR R avg. < 0.5% @ 3.75-5.13um, 0 deg S2: Broad AR R avg. < 0.5% @ 3.75-5.13um, 0 deg Total Transmission : > 98% @ 3.75-5.13um, 0deg Actual Result: Lot # C11-1243 & C11-1245 C11-1243 : R avg. = 0.38% @ 3.75-5.13um, 0 deg C11-1245: R avg. = 0.48% @ 3.75-5.13um, 0 deg Total Transmission = 98.36% @ 3.75-5.13um, 0deg Material: Ge Diameter: 0.87” Coating with Non-radioactive material (ThF 4 ) Moderate abrasion Adhesion Test Environmental Tests Temperature Cycle Test Humidity Test

5. QC / Abrasion & Adhesion Tests MIL-C-48497 Moderate Abrasion: 50 Strokes across the coated surface with a ¼” thickness pad of clean, dry cheesecloth. Minimum 1 pound of force must be applied. Severe Abrasion: 20 strokes across the surface with standard eraser conforming to MIL-E-12397. 2-2.5 pound of force must be applied Adhesion Test: 0.5” wide SCOTCH tape is pressed firmly on to the coated surface and then quickly removed at a normal angle. Military Specification Lens Coating Hardness Kit

6. QC / Salt Fog Spray Test The salt fog method is applied to determine the effects of salt deposits on the physical & electrical aspects of the coatings. MIL-STD-810F (method 509.4) Salt Solution: 5+/-1% concentration. Confirmed by checking the specific gravity of the solution. Temperature: 35degC +/-2deg Duration: 48 hours of exposure + 48 hours of drying time 4 periods of 24hour periods (2 wet + 2 dry) The component should exhibit no signs of corrosion. Associated Environmental Systems - Model# MX9200

7. QC / Humidity Test Humidity test is performed to determine the resistance of the coatings and assemblies to degradation from exposure to high relative humidity. MIL-C-48497 : “Basic” resistance to humidity Temperature : 120deg F Humidity: 95-100% relative for 24~48hrs. The component shall not exhibit any signs of flaking, peeling, cracking, blistering, coating separation, moisture penetration or softening of cement if assembled. Blue M Electric - Model # AC-7502-TDA-4

8. QC / Temperature Cycle Test Temperature exposure testing is performed to determine the resiliency of the coatings and assemblies to changes in temperature. MIL-C-48497 Temperature: -80deg +/-2deg F & +160deg+/-2deg F Time: 2 hours at each temperature Rate of Temp Change: < 4 deg F per minute The component shall not exhibit any signs of flaking, peeling, cracking, blistering, coating separation, or softening of cement if assembled. Tenney Engineering – Model # TJR

9. Lambda Research Optics, Inc. 1695 W. MacArthur Blvd. Costa Mesa, CA 92626 (USA) Tel: 714-327-0600 Fax; 714-327-0610 Email: lambda@lambda.cclambda@lambda.cc For more information, go to http:// www.lambda.ccwww.lambda.cc