United Photonics Technology (UPT) Co., Ltd. products

Positive focus length. Most suitable where one conjugate is more than five times the other, e.g. in sensor applications or for use with near collimated light. Also where both conjugates are on the same side of the lens, e.g. as an add-on lens to increase the numerical aperture.

Windows are used to isolate different physical environments while allowing light to pass. A window is usually parallel and is likely to be anti-reflective coated. UPT offers all kinds of custom-made windows according to customers’ requirement:

Penta prism can deviate an incident beam without inverting or reversing to 90°.The deviation angle of 90° is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces. It is commonly used in Plumb Level, Surveying, Alignment, Range finding and Optical Tooling. The reflecting surfaces of this Prism must be coated with a metallic or dielectric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum.

By adding a wedge and with partial reflective coating on first reflective surface, Penta Prism can be used as Beamsplitter.We supply Beamsplitter Penta Prism with standard Transmission/reflection (T/R) ratio of 10/90,50/50.Other T/R ratio is available upon request.

Bonding (Diffusion bonded) crystals consist of one laser crystal and one or two undoped material. They are combined by optical contact method and further bonded under high temperature. Diffusion Bonded Crystal helps to decrease thermal lens effect considerably.

Yttrium orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has a wide transparency range and larger birefringence, which make it widely used in many applications in particular fiber optics field. YVO4 is an excellent synthetic substitute for calcite and rutile crystal.