Biconcave Lenses

Calcium fluoride biconcave lens

Specifications

General Parameters

material Calcium fluoride single crystal
Design wavelength 587.6nm
Diameter error +0.0/-0.1mm
Center thickness error ±0.1mm
Focal length tolerance ±1%
Lens centering error <3 arc minutes
surface finish 40/20~60/40
edge chamfering 0.2mmX45°

Details

Calcium Fluoride (CaF2) Double Concave (DCV) lenses are double concave lenses made of calcium fluoride as the base material.
Calcium fluoride material has a wide transmission spectrum range (180nm-8.0 μ m). It has the characteristics of high damage threshold, low fluorescence, high uniformity, etc. Its physical properties are relatively soft, and the surface is easy to scratch. It is often used for laser collimation and is also commonly used as a substrate for various optical components, such as lenses, window plates, etc. A biconcave lens diverges light and has a negative focal length. It consists of two concave surfaces with equal curvature and is commonly used for beam expansion, projection, and enlarging the focal length of optical systems.
Guangtan Intelligent's calcium fluoride biconcave lens comes in a variety of sizes and focal lengths, providing coated and uncoated services. It also offers broadband anti reflective coatings available in the IR1 (infrared 3-5 μ m) band to meet various applications in different scenarios and bands. Guangtan Intelligent can also customize lenses of other specifications according to your application needs.
       

Need Custom Optics?

Provide optical parameters, drawings or samples — our engineers will deliver a tailored solution within 1-2 business days

Custom Request