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REQUIREMENTS LIST
Description: 8" Ø, 7979 IR Grade Fused Silica Wedge (Wedge 1 & 2) Part Number: 7979 Quantity: 3 Configuration
| 1 |
| Material: Fused Silica (Corning 7979 IR grade, class 0, Grade F homogeneity ) |
| 1 |
| b. Substrate mechanical diameter: ᴓ 8.00, +0, -0.005 |
| 1 |
| Substrate Thickness Allowable Range: 1.33 0.02 |
| 1 |
| Substrate Thickness Tolerances: all production parts must have equal edge thickness to ± .01” |
| 1 |
| Bevels: 45 degree nominal, 0.02” face width nominal, fine ground |
| 1 |
| Clear aperture specifications: CA ≥7.75, centrally located |
| 1 |
| Wavefront distortion: Surface 1 - ≤/20 PVat 632 nm over the clear aperture |
| 1 |
| Wavefront distortion: Surface 2 - ≤5 PV at 632 nm over the clear aperture |
| 1 |
| Surface Quality: Super-polish of ≤2Å RMS in the clear aperture of both surfaces |
