RGB Filters & Mirrors

KUPO Optics' RGB Filters and Mirrors represent a cutting-edge solution in the realm of light manipulation and color control. Engineered with precision, these optical components are adept at dividing or reflecting the fundamental red, green, and blue light components, a core requirement in a myriad of technical applications. The filters excel in delivering precise color separation, making them indispensable in environments where color accuracy is paramount. Utilizing Borofloat glass, known for its high-quality and durability, these filters guarantee longevity even under strenuous conditions.
The meticulous design of KUPO’s RGB filters ensures they meet rigorous standards, including a spectral tolerance of +/- 3nm at designated wavelengths and compliance with MIL-M-13508C standards for humidity, adhesion, and abrasion resistance. This level of precision and robustness makes them ideal for use in sophisticated systems like optical instruments and projector systems. The filters’ exceptional transmission rates for specific color wavelengths, coupled with their capacity to block other wavelengths, facilitate unparalleled color fidelity. In contrast, the mirrors showcase their proficiency by reflecting specific colors while transmitting others, enabling dynamic control over the light spectrum.
These attributes render KUPO's RGB filters and mirrors highly suitable for specialized industries including photography, cinematography, stage production, scientific and medical imaging, astronomy, and industrial machine vision. Their ability to provide consistent, accurate color control across different units and batches ensures reliable performance in every application. While they offer unparalleled efficiency in high-tech environments, their specialized nature means they are tailored more towards specific applications rather than general-purpose lighting or imaging. In summary, KUPO's RGB filters and mirrors stand as a testament to the brand's commitment to precision and quality, offering professionals the tools they need to achieve excellence in color control and light manipulation.  

Applications of RGB Filters & Mirrors

RGB filters and RGB mirrors are paramount in the manipulation of red, green, and blue light—the primary colors of the additive color model used in various digital displays and imaging technologies. These optical components are crucial for separating or combining these primary colors to create a full-color spectrum. The applications of RGB filters and RGB mirrors are vast and diverse, inclusive of industries such as machine vision, stage lighting, digital projection, photography, and scientific research.
Machine Vision
In machine vision, RGB filters are often used in color cameras to capture high-fidelity color images for inspection, sorting, and decision-making processes. They enable precise color discrimination and measurement, which is vital for quality control in manufacturing environments. RGB mirrors, on the other hand, can direct specific color wavelengths onto sensors, ensuring accurate color detection and enhancing the performance of the vision system.
Stage Lighting
The entertainment industry relies heavily on RGB filters and mirrors to craft visual spectacles in theatre productions, concerts, and live events. When employed in lighting systems, these components help create varied atmospheric effects and moods through vivid color changes and combinations. RGB filters can be placed in front of lights to project colored illumination, while RGB mirrors are utilized within intelligent lighting fixtures to reflect specific colors towards the stage, adding dynamism and depth to performances.
Digital Projection
In digital projectors, RGB filters are essential for the accurate reproduction of colors. They work within the projector's light engine to ensure that only the correct red, green, or blue light reaches the DMD (Digital Micromirror Device) or LCD panel. By precisely controlling the light path with RGB mirrors, a projector can mix the primary colors in various proportions to create the full range of colors seen in video and images, resulting in crisp and vibrant projections for cinemas, conferences, and educational settings.
Photographers use RGB filters to enhance or correct color balance in captured images. By filtering out certain wavelengths of light before it reaches the camera sensor, photographers can emphasize particular colors, correct for lighting conditions or creatively alter the mood of their imagery. RGB mirrors are sometimes integrated into camera systems to direct color-specific light paths for better color separation, which is especially useful in astrophotography where color differentiation is key to highlight celestial features.
Scientific Research
In scientific research, RGB filters and mirrors are valuable tools in spectroscopy and various imaging techniques. They assist in isolating particular wavelengths for analysis, helping scientists gain detailed insights into material properties, biochemical processes, and astronomical phenomena. RGB mirrored optics are also used in laser applications that require precise color reflections, such as in fluorescence microscopy or in the construction of optical instruments like spectrometers.
The telecommunications sector utilizes RGB filters in fiber-optic communications for wavelength division multiplexing, a process that allows multiple colors of light (each carrying different data channels) to travel through a single optical fiber. RGB mirrors in these settings reflect undesired wavelengths while allowing the desired data-carrying light to pass through, boosting the efficiency and data capacity of the fiber-optic networks.
In conclusion, RGB filters and mirrors are integrated into multiple facets of contemporary technology. Their ability to control and modify light makes them indispensable components in both the production of visual content and the advancement of scientific discovery. By enabling accurate color representation and manipulation, RGB optical components enhance the capabilities of diverse applications, driving innovation and efficiency in color-critical industries. 





Borofloat Glass

● Divide / Reflect R.G.B Light

Examples of Applications

● Optical Instrument
● Projector System

General Specification

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


KUPO Dichroic/ RGB Filters & Mirrors
KUPO Dichroic/ RGB Filters & Mirrors

Optical Specification (Transmission Filter AOI 45°)


Blue Transmission Filter

400~465nm Tavg > 94.5%
505~670nm Tavg<1.5%

Green Transmission Filter

420~470nm Tavg<2.5%
500~585nm Tavg>95%
625~680nm Tavg<1.0%

Red Transmission Filter

420~560nm Tavg<3%
600~680nm Tavg>95%


KUPO Dichroic/ RGB Filters & Mirrors

Optical Specification (Reflection Filter AOI 45°):


Blue Reflection Filter

420~470nm Tavg<2%
500~670nm Tavg>95%

Green Reflection Filter

420~460nm Tavg>94.5%
500~580nm Tavg<1%
625~670nm Tavg>95%

Red Reflection Filter

420~560nm Tavg>95%
610~680nm Tavg<1%


KUPO Dichroic/ RGB Filters & Mirrors