Precise Prisms
Description
Precision prisms including penta, roof and right-angle types deliver arc-second accuracy for imaging, HUD and alignment systems.
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Technical details
Penta Prisms
- 90° deviation tolerance: ±20 arc sec (standard); ±2 arc sec available
- Material: N-BK7 Grade A optical glass
- Size: 8×8 mm to 20×20 mm, Dimension tolerance: ±0.2 mm
- Clear aperture: >90%
- Flatness: λ/4 @ 632.8 nm (standard); λ/10 @ 632.8 nm available
- Surface quality: 60-40 Scratch/Dig (40-20 available)
- Reflectivity: R > 95% per surface from 630–680 nm
- Coating: Aluminum coated on reflecting surfaces with black paint; AR coated or uncoated on entrance and exit surfaces
Roof Prisms
- Deviation tolerance: ±5 arc sec (standard); ±1 arc sec available
- Material: N-BK7 Grade A optical glass
- Size: 8×8 mm to 20×20 mm (standard); custom sizes available
- Dimension tolerance: ±0.15 mm
- Clear aperture: >90%
- Flatness: λ/4 @ 632.8 nm (standard); λ/10 @ 632.8 nm available
- Surface quality: 60-40 Scratch/Dig (40-20 available)
- Chamfer & chips: Specified by customer
Right-Angle Prisms & Cemented Prisms
- 45° deviation tolerance: ±3 arc min (standard); ±30 arc sec available
- Material: N-BK7 Grade A optical glass; UV fused silica
- Size: 5×5 mm to 50.8×50.8 mm (standard); custom sizes available
- Dimension tolerance: ±0.1 mm
- Clear aperture: >90%
- Flatness: λ/4 @ 632.8 nm (standard); λ/10 @ 632.8 nm available
- Surface quality: 60-40 Scratch/Dig (40-20 available)
- Bevel (face width × 45°): 0.2 mm (0.05-0.2 mm available)
- Coating: Single-wavelength AR with R ≤ 0.25% per surface; broadband AR with R ≤ 0.5% per surface
Cubic Prisms & Pyramid Mirror Lens
- Material: Fused silica; optical glass, Silicon
- Clear aperture: >90%
- Flatness: λ/4 @ 632.8 nm (λ/10 available)
- Surface quality: 60-40 Scratch/Dig (40-20 available)
- Bevel (face width × 45°): 0.2-0.5 mm
- Silicon corner cube, concave cone mirror, cone mirror, optical cement without glue, custom corner cube, mirror lens & pyramid mirror lens, mini corner cube & huge corner cube
Main Applications
- Projection and imaging optics, for projection displays, imaging systems, and optical measurement instruments.
- Optical display systems: for head-up displays (HUD), helmet-mounted displays, and other display applications.
- Precision measurement systems: for interferometry, autocollimators, and optical alignment systems.