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| Brand Name : | Longway Glass | 
| Model Number : | LW16042067 | 
| Certification : | ISO9001 | 
| Price : | NEGOTIATION | 
| Payment Terms : | T/T,Western Union | 
| Supply Ability : | 36000 Pieces per Month | 
Custom BK7 Glass Dove Prism For Optical Alignment Systems
Material
1.High-quality BK7 optical glass: A standard crown glass with excellent transmission (350–2000 nm),
low bubble/inclusion content, and high homogeneity.
2.Optional coatings: Anti-reflective (AR) coatings (e.g., 532 nm or 1064 nm laser
lines) to minimize surface reflections and enhance durability.
Properties
1.Precision polishing: λ/10 surface flatness and <5 arcsec angular tolerance for
accurate beam control.
2.Thermal stability: Low coefficient of thermal expansion (CTE: ~7.1×10⁻⁶/K) ensures
performance stability in varying temperatures.
3.High laser damage threshold: Suitable for high-power laser systems (e.g., LIDT >10 J/cm² at
1064 nm, 10 ns pulses).
Function
1.Image rotation: Rotates an image by 180° without parity change, critical for
aligning inverted optical paths.
2.Beam displacement: Shifts beam position laterally while maintaining direction, useful
for interferometry and laser alignment.
3.Polarization preservation: Minimal birefringence (<5 nm/cm) for coherent laser
applications.
Applications
1.Laser systems: Alignment of CO₂/UV lasers in industrial cutting and medical
devices.
2.Interferometry: Path correction in Michelson or Mach-Zehnder setups.
3.Imaging systems: Image inversion in telescopes, microscopes, and endoscopic tools.
4.Defense & aerospace: Beam steering in LIDAR and targeting systems.
| Item | Optical Prism | 
| Material | Optical glass, Qurartz glass, borosilicate glass, | 
| Diameter Tolerance | +0/-0.15 mm | 
| Thickness Tolerance | +/-0.15mm | 
| Processed | by grinding, polishing | 
| Surface Quality | 80/50,60/40,40/20 | 
| Material Quality | no scratches and air bubble | 
| Transmission | above 90% | 
| Chamfer | 0.1-0.5 mm x 45° | 
| Surface Coating | Available | 



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| Company Info. | 
| Shanghai Longway Special Glass Co., Ltd. | 
| Verified Supplier | 
| View Contact Details | 
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