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General Specifications
- Size(s): 25.4 mm OD, 3 mm thick | 50.8 mm OD, 6 mm thick | 30 mm OD, 6 mm thick | 35 x 45 mm, 6 mm thick | 20 x 30 mm, 4 mm thick
- Part #: WP-HD1800/840-25.4 | WP-HD1800/840-35X45 | WP-HD1800/840-30 | WP-HD1800/840-50.8 | WP-HD1800/840-20x30
- Wavelength Range: 790 - 890 nm
- Surface Quality: 60-40 scratch-dig
- Diffracted Wavefront: < λ/5 rms @ 632.8 nm over a 1" diameter
- Spatial Frequency: 1800 l/mm +/- 1 l/mm
- CWL: 840 nm
- Angle of Incidence (AOI): 49.1° @ 840 nm
- Thickness Tolerance: +/- 0.25
- Chamfers: 0.25-0.75 mm face width
- Chamfers Angle/Tolerance: 45° +/-15°
- AR Coating: Optimized for the specified wavelength range & AOI
- Substrate and Cover Glass: 1.5 mm BK7 (3 mm total thickness) | 3 mm B270i (6 mm total thickness) | 3 mm BK7 (6 mm total thickness) | 3 mm BK7 (6 mm total thickness) | 2 mm B270i (4 mm total thickness)
- Clear Aperature: 20 mm | 24 mm | 45 mm | 30 x 40 mm | 15 x 25 mm
- Dimensions: A=25.4 mm B=3 mm | A=30 mm B=6 mm | A=50.8 mm B=6 mm | A=35 mm B=45 mm T=6 mm | A=20 mm B=30 mm T=4 mm
