Optical domes are lenses with two concentric spherical surfaces.

A double concave lens/mirror has a negative focal length, thereby causing collimated incident light to diverge. The double concave lens/mirror has an equal radius of curvature on both sides of the lens. They are generally used to expand light or increase focal length in the existing system, such as beam expander and projection systems.

A compound eye lens array is a two-dimensional array composed of multiple independent optical elements

Optical lens from the focal length can be divided into short focus lens, medium focus lens, telephoto lens; From the field of view size, there are wide Angle, standard, telephoto lens;

A pyramidal prism/angular cube reflector is always used to reflect a beam of light into the prism, regardless of the direction of the beam. Corner prisms are widely used where accurate alignment is difficult.

Zinc Selenide Lens is a kind of chemically inert material with high purity, strong adaptability and easy processing. It has low optical transmission loss and good transmittance. With low absorption coefficient and high resistance to thermal shock, it is the preferred material for high-power CO2 laser optical elements.