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.


Optical Instrument Calibration

Optimizing Precision: The Role of Optical Filters in Instrument Calibration
Introduction to Optical Instrument Calibration
Optical instrument calibration is a fundamental process to ensure the accuracy and reliability of equipment used in scientific research, manufacturing, and quality assurance. Calibration involves setting or correcting an instrument to have a known relationship to a reference standard. This process is vital wherever optical measurements are critical, from the production floor of a high-tech factory to field measurements in environmental science. 
Optical filters are used strategically in calibration to control and manipulate the light entering the instrument, thus facilitating precise measurements. Whether attenuating specific wavelengths, selecting a range for transmission, or blocking unwanted light, optical filters can significantly affect the calibration of imaging systems, spectrometers, and various types of sensors.
Let's delve into the various optical filter types and how they are utilized in the calibration of optical instruments to bring about unmatched measurement fidelity.
Dichroic Filters: Spectral Control for Standardization
Dichroic filters offer high precision light modulation in a variety of calibration applications:
● Beam Steering: Used to reflect certain wavelengths precisely at specific angles, dichroic filters are essential for aligning optical paths during the calibration of imaging systems, ensuring that the light is directed accurately through lenses and onto sensors.
● Spectral Isolation: For the calibration of instruments requiring a narrow spectral band, dichroic filters can ensure that only those precise wavelengths are measured, cutting out any potential interference from neighboring wavelengths.
Dichroic filters serve the exacting needs of calibration, ensuring that light is controlled with specificity and accuracy.
IR Filters: Calibration in the Infrared Spectrum
IR filters find their application in the calibration of instruments dedicated to infrared measurements:
● Thermal Imaging Calibration: IR filters allow instruments to be calibrated to different regions of the infrared spectrum, ensuring sensitivity and accuracy while measuring temperature or energy variations.
● Infrared Spectroscopy: Calibration for wavelength accuracy in infrared spectroscopy relies significantly on the selectivity provided by IR filters, allowing for reference comparisons that are tight and dependable.
IR filtration is fundamental for instruments where infrared plays a key role, ensuring that their metrics are precisely aligned with spectral standards.
Bandpass Filters: Achieving Wavelength Precision
Bandpass filters are particularly useful for calibrating instruments that must operate within a strict spectral window:
● Photometric Calibration: By transmitting a specific wavelength range and blocking others, bandpass filters ensure that light detectors accurately measure the intensity of light within the defined passband, critical for photometric systems.
● Monochromator Tuning: For instruments that need to select for or calibrate against particular emission or absorption lines, bandpass filters can validate that only the desired narrow band of wavelengths is utilized in the process.
The focused transmission provided by bandpass filters is essential for calibrating instruments to desired levels of spectral precision and isolation.
Polarizing Filters: Ensuring Angular Consistency
Polarizing filters are employed in calibration to validate and adjust light polarization:
● Polarimeter Calibration: Instruments that measure the polarization state of light rely on polarizing filters to calibrate against known polarization levels, confirming that measurements are both precise and repeatable.
● Optical System Alignment: Polarizing filters are also used to ensure that light is consistently polarized before it enters or as it exits the system, an important consideration for calibration in systems where polarization affects the measurements.
Fine-tuning the polarization state with filters is key for instruments that depend on angular light properties.
Conclusion: The Science of Light Meets Calibration Excellence
Calibration is the unsung hero of optical measurement, ensuring instruments perform at their peak, and optical filters are the tools that help achieve this excellence. By manipulating the spectral characteristics of light with precision filters, calibration transcends mere functionality—it becomes an assurance of accuracy, reliability, and trust in every measurement taken.
At KUPO Optics, our expertise in high-quality optical filters places us at the vanguard of providing the crucial components needed for stringent calibration processes. We stand by those who value precision measurements, offering filters that set the benchmark for accuracy in every optical instrument they touch. Choose KUPO Optics for your calibration needs, and instill confidence in every reading and resolution.