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.


Underwater Imaging

Unveiling the Depths: Optical Filters as a Window into Underwater Imaging
Exploring the Realm of Underwater Imaging and Optical Filters
Underwater imaging is the practice of capturing photographs and videos beneath the surface of water bodies. It plays a crucial role in marine biology research, underwater archaeology, and oceanography. Furthermore, it's an essential tool for inspecting underwater infrastructure and ecosystems, and it holds special appeal for recreational divers and filmmakers. The unique optical properties of water, such as different absorption and scattering characteristics compared to air, make underwater imaging challenging.
Optical filters are essential in overcoming these challenges, improving image quality by correcting color casts, enhancing contrast, and mitigating the effects of particulate matter. In an environment where light behaves differently due to refraction, absorption, and scattering, filters help in tailoring the imaging system to capture the true vibrancy and detail of underwater scenes.
Let's dive into the different types of optical filters and their specific uses in the specialized field of underwater imaging.
Dichroic Filters: Selective Transmission for Color Fidelity
Precise color correction is paramount in underwater imaging, and dichroic filters play a vital role:
● Color Enhancement: Underwater, red wavelengths are absorbed first, leading to a blue●green color cast. Dichroic filters can be designed to selectively transmit red wavelengths back into the captured image, rebalancing color proportions for a more natural look.
● Glare Reduction: These filters can also help to direct unwanted wavelengths away from the camera sensor, reducing glare from particulate matter suspended in the water.
Dichroic filters improve color fidelity and clarity in underwater imaging, enhancing the accuracy of scientific data and the aesthetic quality of photographs and videos.
IR Filters: Infrared Insights Below the Surface
While IR radiation is mostly absorbed in water, IR filters can still find some applications in underwater imaging scenarios:
● Sensor Protection: In situations where infrared light poses a risk to camera sensors during shallow dives or in clear waters, IR filters can be used to block these wavelengths.
● Specialized Research: Certain scientific applications may involve the use of IR filters to study thermal properties of water bodies or to identify and observe aquatic organisms with specific IR reflective or absorptive patterns.
Although less common, IR filters in underwater imaging are valuable for specialized observation and sensor protection.
Polarizing Filters: Eliminating Reflections for Clearer Views
Polarizing filters are particularly useful underwater for:
● Reflection Control: Polarizers can significantly reduce the reflections off the water surface and submerged objects, which is especially useful for scientific studies and infrastructure inspections.
● Saturation Boost: By cutting through scattered light, polarizing filters can help amplify the natural colors in underwater environments, making marine life and features more vivid.
With these filters, subtle details and true colors are rendered more accurately in underwater visuals.
Bandpass Filters: Discriminating Wavelengths for Improved Contrast
Bandpass filters that isolate specific sections of the light spectrum can be crucial:
● Targeted Observations: Certain marine species may fluoresce at particular wavelengths, and bandpass filters allow for the isolation of these emissions against the ambient underwater light for research or documentation.
● Enhanced Imaging in Murky Waters: By blocking out blue light, which scatters easily, bandpass filters help obtain better contrast in sediments or plankton rich waters.
Bandpass filters provide a means of cutting through the aquatic haze to unveil the mysteries of the underwater world.
UV Filters: Protecting Equipment and Enhancing Visibility
In underwater imaging, UV filters serve a dual role:
● Lens Protection: Acting as a barrier for the camera lens, UV filters protect against scratches, dust, and the corrosive nature of saltwater.
● Improved Clarity: Although UV light absorption by water is significant, UV filters can still clarify the remaining UV radiation that affects surface and shallow water imaging, ensuring crisper images.
Conclusion: Refining the Art and Science of Underwater Imaging with Optical Filters
Optical filters provide indispensable enhancements to the field of underwater imaging, offering both professional and recreational users the means to overcome the optical challenges presented by aquatic environments. With appropriate filtering, images and videos captured underwater can attain the color accuracy, clarity, and detail necessary for scientific research, industrial applications, and the creation of breathtakingly beautiful content.
KUPO Optics is dedicated to facilitating the exploration and conservation of our underwater worlds through the provision of high-quality optical filters. By understanding the specific needs and challenges of underwater imaging, we offer solutions designed to meet and exceed the demands of our customers. Engage with KUPO Optics to ensure your underwater imaging endeavors capture the full spectrum of aquatic splendor.