Hollow Roof Prism Mirror, Material: Borofloat 33 OPHR25-S1
JCOPTIX hollow roof prism mirrors combine two right-angle prisms and a rectangular substrate. Protected-silver hypotenuses form a 90º ±10 arcsec dihedral angle. Light incident from outside reflects by 180° when perpendicular to the hypotenuse intersection line, giving retroreflection. Silica over silver prevents oxidation, but hot, humid use is prohibited because harsh conditions weaken protection and degrade silver. Broadband performance includes average reflectance >97.5% at 450-2000 nm and >96% at 2-20 µm, with low intrinsic GDD for redirecting femtosecond lasers. Metallic films are consumables susceptible to oxidation during prolonged air exposure or in humid, corrosive atmospheres. 1. Keep clean and dry. 2. Wear gloves and avoid touching the mirror. 3. Prevent scuffs and scratches that accelerate oxidation and delamination. 4. Store unused products sealed in their protective boxes. JCOPTIX offers three sizes; contact technical support for other sizes, materials, or coatings.
Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | Borofloat 33 |
| Dimensions [L / W / H (Corresponding to Original Values, Respectively)] | L:25.4 mm,W:25.4 mm,H:18.7 mm |
| Clear Aperture Dimension | >80% of Face Dimensions |
| Operating Wavelength [Lower Limit 450 nm; Upper Limit 20.0 μm (Original Units Retained Separately)] | 450 nm - 20.0 μm |
| Coating | Silver Coating (With Silica Protective Layer) |
| Reflection R_avg [450-2000 nm Corresponds to >97.5%; 2000 nm-20 μm Corresponds to >96%] | R_avg >97.5% (450-2000 nm),R_avg >96% (2000 nm - 20 μm) |
| Angle of incidence (AOI) | 0-45° |
| Reflected Wavefront Error [@633 nm] | < λ/2 |
| Angle Between Inclined Faces [Central Angle in °; Angular Tolerance in arcsec] | 90° ± 10 arcsec |
| Dihedral Angle Accuracy | ± 10 arcsec |
| Dimensional Tolerance | ± 0.1 mm |
| Surface Flatness [@633 nm] | λ/4 |
| Surface parallelism | <3 arcmin |
| Surface quality (scratch/dig) | 40/20 |
Key Features
Datasheet
Please provide your email to download the datasheet.
Invalid email format. Please try again.
Supplier Information
Loading...
Name
Phone
Organization
Use Case

Database Platform