Calcium Fluoride Properties
Calcium fluoride is an excellent optical material in the spectrum range of 180nm-8um. Compared with many other infrared materials, calcium fluoride has higher light transmittance and lower chromatic aberration.
Calcium fluoride is in the range of 0.25um-7um The light transmittance between them exceeds 90%. Under normal conditions, the polished surface of calcium fluoride can work for several years. Calcium fluoride is twice as hard as barium fluoride and is more resistant to thermal shock.
Customizability
According to different usage requirements, CaF2 lenses can be designed into various shapes such as plano-convex, biconvex, meniscus, plano-concave and bi-concave.
The focal length, diameter and other parameters of the lens can also be customized according to customer needs.
Application
UV optical system:
Due to its excellent transmittance in the ultraviolet band, CaF2 lenses are widely used in ultraviolet photodetectors, ultraviolet lasers and ultraviolet optical systems.
Laser technology:
In laser technology, CaF2 lenses can be used to focus, expand and shape laser beams to improve the performance and stability of laser systems.
Infrared optics and thermal imaging:
CaF2 lenses also have good transmittance in the infrared band and are suitable for infrared optical systems and thermal imaging equipment.
Astronomical Observation and Photography:
In the field of astronomy, CaF2 lenses can be used in observation equipment such as telescopes to improve the clarity and accuracy of observations.
Scientific research and experiments:
In scientific research and experiments, CaF2 lenses are widely used in various optical experiments due to their excellent optical properties.
Specification
Materials | CaF2 |
Wavelength | 587.6nm(customization) |
Transmittance Range | 130nm – 9.4μm |
Refraction | between 1.35 and 1.51 |
Focal Length Tolerance | ±1%(customization) |
Appearance Tolerance | +0.0/-0.1mm |
Thickness Tolerance | ±0.1mm |
Surface Shape | λ/[email protected] |
Surface Smoothness | 80-50 |
Eccentricity | <3 arc min |
Clear Aperture | >80% |
Bevel | <0.2×45° |
Coating | IR AR Coating 3-5μm |