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| Coad | 669023 | Substrate | UVFS | |
| Type | Long-Wave-Pass Dichroic Mirrors | Clear Aperture | >32.4mm x 22.5mm | |
| Dimension(mm) | 36.0 x 25.0 x 1.0 | Parallelism | <3arcmin | |
| Diameter | 36.0mm x 25.0mm +0/-0.2mm | Protective Chamfer | - | |
| Thickness | 1.0mm ±0.05mm | Surface Quality S1 | 60-40 | |
| HR Wavelength (nm) | 400 - 760 | Surface Quality S2 | - | |
| HT Wavelength (nm) | 830 - 1300 | Surface Flatness | λ/2@633nm | |
| AOI(°) | 45 | Coating Type | Dielectric Coating | |
| Reflectivity | >95% | Coating Parameter S1 | Ravga>95%，Rabs>90%@400-760nm+Tavga>90%，Tabs>85%@830-1300nm | |
| Transmittance | >90% | Coating Parameter S2 | Rabsb<2%@830nm-1300nm |
LBTEK Dichroic Mirrors can separate beams based on wavelength. Long-pass dichroic mirrors transmit light above the cutoff wavelength while reflecting light below the cutoff wavelength, featuring high transmission and high reflection performance. We offer 13 cutoff wavelengths to choose from: 425 nm, 490 nm, 505 nm, 550 nm, 605 nm, 638 nm, 650 nm, 805 nm, 950 nm, 1000 nm, 1180 nm, 1500 nm, and 1800 nm. Within the specified spectral ranges, both the average transmission and average reflectance can reach over 90%.
LBTEK provides four available sizes: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm, and 36.0 mm × 25.0 mm. One surface of the dichroic mirror is coated with a filter coating, while the other side is coated with an anti-reflection coating. The arrow indicates the filter-coated surface, and it is recommended to orient the mirror so that the light enters from this side.
LBTEK also offers short-pass dichroic mirrors, which transmit light below the cutoff wavelength while reflecting light above it. In addition to our standard dichroic mirrors, LBTEK provides a variety of customization services—please contact us for special requirements.
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