About us

Since our inception in 1992, KUPO Optics has been at the forefront of the optical coatings and filters industry. With a steadfast commitment to quality, we've carved out a distinguished reputation, providing top-tier optical solutions. Our focus on maintaining high standards has positioned us as a leader in the professional optical filter market, catering to a diverse range of industries with unmatched expertise and precision.

State-of-the-art Facilities

Our dedication to excellence is reflected in our investment in cutting-edge production technology. Our arsenal includes advanced planetary coating machines, precise linear and laser cutting tools, and high-resolution spectrometers. This sophisticated equipment enables us to craft filters and coatings with exceptional accuracy and consistency, ensuring each product meets our stringent quality benchmarks.


Wide Range Applications

KUPO Optics' products find their application across a vast array of fields. We cater to sectors as diverse as medical and fluorescence imaging, machine vision, astronomy, defense systems, and entertainment. Our optical filters and coatings are integral in enhancing the performance and functionality of various devices and systems in these industries.


Flexibility and Customization

We understand the urgency and unique requirements of our clients. Our extensive inventory is poised to fulfill rush orders, demonstrating our commitment to responsive service. Furthermore, our seasoned R&D team is adept at developing bespoke filters tailored to meet the most exacting specifications, providing solutions that align perfectly with client needs.


KUPO Dichroic Filter

At KUPO Optics, the precision and consistency of our optical filters are a testament to our advanced coating chambers equipped with planetary revolution and Ion Assistant Deposition (IAD) technology. Adhering to MIL-M-13508C standards, our rigorous manufacturing process ensures each filter withstands environmental challenges, including abrasion, humidity, and flaking. Our commitment to quality is further solidified by our adherence to ISO 9001 standards, guaranteeing uniformity in all our products.
Our relentless pursuit of innovation is grounded in continuous research and development. We are dedicated to exploring new possibilities in optical solutions, striving to exceed expectations in both product quality and customer service. At KUPO Optics, your satisfaction is our priority. We welcome your inquiries and are committed to providing prompt and comprehensive responses to all your needs.


Display Color Correction

Calibrating Chromatic Excellence: Optical Filters and Their Role in Display Color Correction
The Spectrum of Color Correction in Displays
Color correction in displays is a critical process that ensures the colors users see on a screen are as accurate and consistent as possible. It's a vital factor in industries such as digital cinematography, photography, graphic design, and manufacturing of display technology, where precise color reproduction is essential. In an era where visuals are paramount to user experience, maintaining color fidelity across various devices and lighting conditions has become a key objective.
Optical filters are indispensable tools for achieving precise color correction in displays. By selectively blocking, reflecting, or transmitting specific wavelengths of light, optical filters can adjust the color balance of displays to match predefined standards or to compensate for undesired color casts caused by ambient light or display technologies themselves.
Now, let us explore the different types of optical filters and their nuanced applications in the realm of color correction for displays.
Dichroic Filters: Precision in Color Segregation
Dichroic filters are known for their steep transmission and reflection edges, making them precise tools for color manipulation:
● Projector Displays: Dichroic filters can be used in projectors to refine the color light output. Different colored light beams can pass through their respective dichroic filters, which combine to project the desired full-color image.
● Ambient Light Compensation: For displays that are susceptible to the effects of ambient lighting, dichroic filters can be used to adjust the display's emitted color spectrum, ensuring that the on-screen colors remain stable and unaffected by external light sources.
Dichroic filters bring about the necessary spectral fine-tuning that high-quality displays demand for accurate color reproduction.
IR Filters: Maintaining Color Consistency
While infrared light is invisible to the human eye, it can affect color perception in displays:
● IR Heat Reduction: IR filters are used to remove the heat associated with IR radiation, which can affect the thermal balance of a display and lead to color drift over time.
● Sensor Protection: Many displays integrate sensors for automatic brightness and color adjustment. IR filters ensure that these sensors only detect visible light and properly regulate display settings without the interference of infrared radiation.
Color consistency is protected by IR filters, ensuring the longevity and accuracy of display performance.
Neutral Density (ND) Filters: Balancing Display Brightness
Neutral density filters are vital for the control of luminance without altering the color hue:
● Brightness Matching: In multi-display systems, ND filters can help to balance the brightness among different units, ensuring that colors appear uniform across several displays.
● Glare Mitigation: Used in overly bright environments or with displays that are intrinsically bright, ND filters can reduce glare that might otherwise wash out colors and affect the viewer's ability to perceive the correct color mix.
ND filters are essential for managing the brightness levels of displays, enhancing user comfort, and maintaining color integrity.
Polarizing Filters: Enhancing Color Saturation and Contrast
Polarizing filters adjust the light entering and emanating from a display, improving the viewing experience:
● Improved Color Saturation: By filtering polarized light, these filters enhance color saturation and reduce reflections, allowing for richer, deeper colors on-screen.
● LCD Displays: Many liquid crystal displays (LCDs) use polarizing filters as an integral component of their operation, dictating how light is allowed to pass through the liquid crystals and color filters within the display.
Utilizing polarizing filters can dramatically affect the vibrancy and legibility of display colors in different lighting conditions.
Color Correction (CC) Filters: Fine-Tuning Display Hues
CC filters, often available in magenta, yellow, and cyan, are utilized to incrementally adjust the color temperature:
● Camera and Sensor Calibration: Used in the calibration of cameras and imaging sensors integrated within displays or in testing equipment, CC filters ensure that the captured or rendered colors meet specified standards.
● Manufacturing Quality Control: During the manufacturing process, these filters assist in validating that a display meets the required color accuracy, ensuring consistency straight from production.
Conclusion: Capturing Visual Authenticity with Optical Filter Technology
Optical filters stand as pillars in the world of display technology, crucial for ensuring that what we see retains the vibrancy and accuracy of real life. Precision color correction powered by these filters not only satisfies the discerning eyes of professionals but also delights everyday users, enhancing their interaction with digital content across various platforms.
KUPO Optics specializes in providing state-of-the-art optical filters designed to meet the complexities of color correction in displays. Our commitment to excellence sees us delivering products that redefine the standards of color accuracy, fostering trust among consumers and professionals alike. Partner with us to elevate the fidelity, contrast, and uniformity of your display systems, ensuring an unmatched viewing experience reflective of a world full of color.