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On the mark

On the mark. Precision Fabrication. Fabrication . R avg. < 5% @ 2.5-13 µm. 0deg Adhesion per MIL-C-48497 Abrasion per MIL-C-48497. R avg. < 0.5% @ 8-12 µm. 0deg Adhesion per MIL-C-48497 Abrasion per MIL-C-48497. R avg. < 0.5% @ 3-5 µm. 0deg Adhesion per MIL-C-48497

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On the mark

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  1. On the mark

  2. Precision Fabrication Fabrication

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

  4. Material: Ge • Diameter: 0.87” • Coating with Non-radioactive material (ThF4 ) • Moderate abrasion • Adhesion Test • Environmental Tests • Temperature Cycle Test • Humidity Test 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 Coating (Non-Radioactive)

  5. 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 QC / Abrasion & Adhesion Tests

  6. 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 QC / Salt Fog Spray Test

  7. 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 QC / Humidity Test

  8. 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 QC / Temperature Cycle Test

  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.cc For more information, go to http:// www.lambda.cc

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