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Features
 The Plano Concave lenses are made from Sapphire material, which are manufactured with one concave surface and one plane surface. These lenses have negative focal lengths. These lenses diverge collimated incident light. They form virtual images which are seen through the lens. They are often used to expand light or to increase focal lengths in existing systems. We also offer precision grade plano convcave lens with tighter manufacturing tolerances.
Specifications
Specifications:
Material: Sapphire Lenses
Design Wavelength: 546.1nm, n=1.771
Diameter Tolerance: +0.0/-0.1mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Surface Figure : λ/4 @ 632.8 nm
Surface Quality: 80-50
Clear Aperture: >80%
Bevel: <0.25mm X 45°
Coating: Uncoated



Item# φ(mm) f(mm) R(mm) Tc Te Fb
PCV4-001 5 5 -3.86 2.9 2 3.9
PCV4-101 10 10 -7.71 3.8 2 7.9
PCV-102 20 10 -15.42 2.8 2 18.9
PCV4-103 25 10 -19.28 2.7 2 23.9
PCV4-201 50 20 -38.55 3.3 2 48.9
PCV4-202 100 20 -77.1 2.7 2 98.9
PCV4-203 150 20 -115.65 2.4 2 148.9
PCV4-204 200 20 -154.2 2.3 2 198.9