CaF2 Plano-Concave Lenses (PCV4-205)
CaF2 plano-concave lenses are made of calcium fluoride (CaF2) material. They have one concave surface and one flat surface, with a negative focal length, and are used to reduce images or spread light. These lenses diverge collimated incident light to form a virtual image seen through the lens. They are commonly used to expand light or increase focal length in existing systems.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | Calcium fluoride |
| Design Wavelength [n=1.425] | 1500 nm,n=1.425 |
| Diameter Tolerance | +0.0/-0.15 mm |
| Focal Length Tolerance | ±2 % |
| Deviation | <3 ′ |
| Clear Aperture | >85 % |
| Surface Figure [@633nm] | <λ/4@633 nm |
| Surface Quality | 80/50 |
| Chamfer [45°] | <0.25 mmx45 ° |
| Coating | Custom coating available upon request |
| Diameter | 25.4 mm |
| Focal Length f | -200.0 mm |
| Radius of Curvature R | 85.25 mm |
| Tc | 2.0 mm |
| Te | 2.95 mm |
| fb | -201.4 mm |
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Datasheet
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Supplier Information
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