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.

State-of-the-art Facilities

We keep investing in the state-of-the-art production equipment including planetary coating, accurate linear and laser cutting machine, high resolution spectrometers and the likes. Those advanced facilities makes filters and coatings perfectly and precisely.


Wide Range Applications

KUPO Optics manufactures optical filters and coatings for wide range of application including medical, fluorescence, machine vision, astronomy, defense systems, entertainment, and more.


Flexibility and Customization

We stock abundant and diverse filter inventory to fulfill rush order. Our experienced R&D team is also happy to provide customized filters that meet your most demanding requirements.


KUPO Dichroic Filter

KUPO optical filters are renowned for their precision and constituency due to the excellent work of our coating chambers with planetary revolution and the assistance of the Ion Assistant Deposition (IAD). Base on MIL-M-13508C regulations, the rigorously strict manufacturing process creates filters that strongly resist the damage from abrasion, humidity, and flaking. The performance never degrades.

Our procedures are completely in accordance with the ISO 9001 to ensure quality uniformity, making filter at narrow tolerance, within ±1.5% at T50%. KUPO Optics is dedicated in pursuing the visualization of any possibilities through continuous research and development. We are relentless in our commitment to provide quality products and better service to our customers.

We dedicates ourselves to ensure product quality and customer satisfaction. Please contact us if you have any inquiries, your requests are always welcome and will be addressed as soon as possible.


UV Transmission Filters

With rapid development of newtechnology, the usage of light has expanded to invisible region. Due to the characteristic of high energy, the applications of UV filter are growing very fast.

From time to time the UV LED emits wide range of UV, but this may not be suitable for specific application as the UV range is too wide. Therefore, adding a UV filter is able to narrow the range of the UV LED by filtering out the unwanted UV range. 
KUPO Optics provides different types of UV transmission filters with high transmitting rate on designated and commonly used UV. While transmitting the UV, our filter also reflects visible light that can be utilized in coaxial light source.
KUPO Dichroic/ UV Transmission Filters


● Perfect piece-to-piece, batch-to-batch consistency
● High UV transmission
● Visible light reflection

Examples of Applications

● Fluorescent Effect (Stage Lighting)
● Medical
● Tanning Bed

General Specification

● Available Substrate: See Glass Substrates under Products Page
● Humidity, Adhesion, and Abrasion: MIL-M-13508C

UV Transmission Filter (Type 4)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (Type 4)

315 - 390nm Tavg>80%
T50% at 400+/-5nm
410 - 700nm Tavg<0.5%

UV Transmission Filter (Type 5)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (Type 5)

355 - 440nm Tavg>90%
T50% at 460+/-10nm
500 - 700nm Tavg<1.0%

UV Transmission Filter (330/380)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (330/380)

300 - 320nm Tavg<1.0%
340 - 370nm Tavg>80%
400 - 700nm Tavg<1.0%
T50% at 330/380 +/-10nm

UV Transmission Filter (330/490)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (330/490)

300 - 320nm Tavg<1.0%
340 - 480nm Tavg>80%
520 - 700nm Tavg<1.0%
T50% at 330/490 +/-10nm