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Calcium fluoride Plano convex cylindrical lens can turn the light emitted by a light emitting point into a line. Surface light can be generated by placing two Plano convex lenses perpendicular to each other or in the intersecting direction. The total focal length is the sum of each focal length.
The transmittance of calcium fluoride glass in visible light (wavelength 400-700nm) and near-infrared region (0.7-1.3μm) is as high as over 90%, especially in the near-infrared region, where the transmittance remains at 70%-80%. In the infrared band (>1.3μm), calcium fluoride’s absorptivity increases dramatically, while its transmittance decreases significantly, limiting its application in infrared optics.
Due to its high transmittance, calcium fluoride glass is often used in spectrometer windows, low-temperature thermal imaging systems, and other applications requiring low temperatures.
Processing size range: 5-500mm
Technical parameters with Calcium Fluoride Plano Convex Cylindrical Lenses
| Substrate Material | Calcium Fluoride |
|---|---|
| Design Wavelength | 4μm |
| Center Thickness Tolerance | ±0.2 mm |
| Diameter Tolerance | +0.0/-0.1 mm |
| Focal Length Tolerance | ±2% |
| Clear Aperture | >90% Diameter |
| Surface Quality | 60-40 |
| Lens Centering Error | 3' - 5' |
| Chamfered Edge | 0.2 mm x 45° |
| Coating | Uncoated@400-1.3μmµm; IR Coated@3-5μm or custom |
spectral curve with Plano Convex Cylindrical Lens
Available Sizes with Plano Convex Cylindrical Lenses
| Dimensions (x*y) mm | Focal Length (f) mm | Center Thickness (Tc) mm | Edge Thickness (h) mm | Radius of Curvature (R) mm | Back Focus (BFL) mm | Coating |
|---|---|---|---|---|---|---|
| 12.7 | 20 | 5 | 7.4 | 8.19 | 16.4 | no coated or IR coated@3-5μm |
| 12.7 | 50 | 3 | 5 | 20.48 | 47.9 | no coated or IR coated@3-5μm |
| 12.7 | 80 | 2.5 | 5 | 32.77 | 78.2 | no coated or IR coated@3-5μm |
| 25.4 | 50 | 6 | 7.9 | 20.48 | 45.7 | no coated or IR coated@3-5μm |
| 25.4 | 75 | 4.5 | 7 | 30.72 | 71.8 | no coated or IR coated@3-5μm |
| 25.4 | 100 | 4 | 7 | 40.96 | 97.2 | no coated or IR coated@3-5μm |
| 25.4 | 200 | 3.5 | 5.3 | 81.93 | 197.5 | no coated or IR coated@3-5μm |
If you need to order in stock or custom calcium fluoride plano-convex cylindrical lenses, please kindly contact our sales team:
info@borisuns.com/ jessie@borisuns.com
