Non-Polarizing Plate Beamsplitter, Operating Wavelength Band: 400-700 nm OSB25R19-T2
JCOPTIX plate beamsplitters suit 45° incidence and randomly polarized light. A front dielectric splitting coating and rear antireflection coating are designed for the operating band. A 30 arcmin rear wedge on circular versions redirects rear reflections to minimize interference ghosts. UV fused silica is extremely pure synthetic amorphous silicon dioxide with maximum transmission from 195 to 2100 nm. This colorless glass combines very low thermal expansion and good optics, excellent UV transmission, no UV fluorescence, and radiation resistance. Compared with glasses such as N-BK7, it has lower refractive index at certain wavelengths, lower thermal expansion, and better homogeneity, suiting deep-UV applications requiring greater transmission than N-BK7. JCOPTIX offers circular or rectangular plates with five ratios: 10:90, 30:70, 50:50, 70:30, or 90:10 (R:T). Contact technical support for custom dimensions.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | UV Fused Silica |
| Operating Wavelength | 400-700 nm |
| Split Ratio [R:T] | 10:90 (R:T) |
| Dimensions | 25.0 mm × 36.0mm |
| Clear Aperture Dimension | >90% of Dimension |
| Dimensional Tolerance | ± 0.20 mm |
| Thickness | 1.0 mm |
| Thickness Tolerance | ± 0.20 mm |
| Wedge Angle | None |
| Coating | Antireflection coating, beamsplitter coating |
| Antireflection Coating R_abs [Operating Wavelength: 400-700 nm] | R_abs< 1% |
| Beamsplitter coating T_abs / R_abs / Ts / Tp / Rs / Rp [45° AOI; Operating Wavelength: 400-700 nm] | T_abs = 90 ± 8%，R_abs = 10 ± 8%，T_abs + R_abs >99%，|Ts - Tp|< 35%，|Rs - Rp|< 35%，45°AOI |
| Surface quality (scratch/dig) | 20/10 |
| Transmitted wavefront error [@633 nm] | λ/4 |
Key Features
Datasheet
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