About us

KUPO Optics was founded in 1992, aiming at offering the finest quality of optical coatings and filters. Thanks to uncompromising to the product criteria, we have been established an excellent reputation in professional optical filter industry.


UV / IR Cut Off Filters

KUPO Optics provides UV/IR blocking filters that effectively block both UV and IR sources, and transmit averagely 96% of visible light.
Near infrared (IR)is the major attributor of heat. Some components will be damaged when exposed to the heat continuously. For example, in the projection system, the heat from light source will burn down filters. By adding a UV/IR filter in between, the heat will be reflected backward to the light source to protect dichroic filters in front.
Ultraviolet (UV), on the other hand, contains large amount of energy. Because of this characteristic, some components will be damaged by UV as well. In order to protect those components, placing a filter that blocks UV will be an effective yet economic solution.
KUPO Dichroic/ UV / IR Cut Off Filters


● Perfect piece-to-piece, batch-to-batch consistency
● Excellent visible light transmission
● Reflect IR and block UV

Examples of Applications

● Projection System
● Illumination System
● Art Gallery
● Photographic and Film Apparatus

General Specification

● Spectral Tolerance: +/- 10nm at designated wavelength
● Available Substrate: See Glass Substrates under Products Page
● Humidity, Adhesion, and Abrasion: MIL-M-13508C