
Fixed fiber optic collimator FC1690-2-PC
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LBTEK Fixed Fiber Collimator (FC/PC Connector) is compatible with FC/PC connector type optical fibers, as shown in the figure on the right. It can be paired with the LBTEK Collimator Mount TAD-11 and fixed into the 30 mm coaxial mounting plate OPM-12.5AS. Additionally, it can be optionally equipped with LBTEK's fiber flanges SM1E-FPC and SM1-FPC to mount SM1 internal and external threads, integrating into the 30 mm coaxial system.
- Working wavelength: 405 nm, 450 nm, 480 nm, 520 nm, 532 nm, 635 nm, 650 nm, 780 nm, 810 nm, 850 nm, 980 nm, 1064 nm, 1550 nm, and 1690 nm
- Output spot diameter: 2.0 mm
- Fiber connector type: FC/PC

| Operating Wavelength | 1690 nm |
| Anti-reflection coating range | 1690 nm |
| Output spot diameter | 2.0 mm |
| Focal length | 10.1 mm |
| Material | N-BK7 |
| Housing Material | Non-magnetic stainless steel |
| Housing Thread | M11×0.5 |
| Housing Diameter | 11.0 mm |
| Divergence angle | <0.079° |
| Deflection angle | <0.25° |
| AR Coating Reflectance | Rabs<0.25%@1690 nm (6° angle of incidence, single side) |
| NA<sub>lens</sub> | 0.37 |
Product Family: Fixed fiber optic collimator (10 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| Fixed fiber optic collimator FC405-2-APC |
FC405-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC405-2-APC |
FC405-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC450-2-APC |
FC450-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC450-2-APC |
FC450-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC480-2-APC |
FC480-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC480-2-APC |
FC480-2-APC
| — | — | — | View |
| Fixed fiber optic collimator FC780-2-PC |
FC780-2-PC
| — | — | — | View |
| Fixed fiber optic collimator FC780-2-PC |
FC780-2-PC
| — | — | — | View |
| Fixed fiber optic collimator FC1690-2-PC |
FC1690-2-PC
| — | — | — | View |
| Fixed fiber optic collimator FC1690-2-PC Current |
FC1690-2-PC
| — | — | — |






