UV Cut Filter
UV Cut Filters are precision optical filters designed to transmit visible wavelengths while blocking ultraviolet radiation. They use dielectric coating technology to provide sharp spectral separation between the visible transmission region and UV blocking region. Chenyu Optics manufactures UV cut filters in BK7, borosilicate glass and fused silica with custom cut-off wavelength design.
UV Cut Filter Overview
UV Cut Filters are precision optical filters designed to transmit visible wavelengths while blocking ultraviolet radiation. They use dielectric coating technology to provide sharp spectral separation between the visible transmission region and UV blocking region.
By reducing unwanted UV exposure, UV cut filters help improve imaging stability, protect optical sensors and maintain consistent optical performance. They are widely used in imaging systems, machine vision cameras, optical sensors, fluorescence systems and display applications.
Chenyu Optics supports custom UV cut filter manufacturing according to customer drawings, including custom substrate material, dimensions, cut-off wavelength and coating design for prototype and repeat production.
Key Advantages of UV Cut Filter
Imaging & Machine Vision Systems
UV cut filters are widely used for improved imaging stability and sensor protection in imaging systems, machine vision cameras, optical sensors and fluorescence imaging systems.
Typical Specifications of UV Cut Filter
| Material Options | BK7, Borosilicate Glass, Fused Silica |
|---|---|
| Coating Type | UV cutoff dielectric coating |
| Optical Function | Visible transmission / UV blocking |
| Cut-off Wavelength | Customizable |
| Transmission Band | Visible wavelength range |
| Blocking Band | Ultraviolet wavelength range |
| Surface Quality | High precision optical finish |
| Optical Distortion | Low |
Spectral Transmission Curve (Typical)
Why Choose Chenyu Optics for UV Cut Filter
Chenyu Optics focuses on drawing-based precision filter manufacturing for imaging, machine vision, camera and display optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard UV cut filters.
Manufacturing Capability for UV Cut Filter
Precision Polishing
High surface quality processing for stable filter performance.
Dielectric Coating
High performance UV cutoff coating for sharp visible/UV spectral separation.
Inspection & Packaging
Strict quality control on cut-off wavelength and blocking performance, with clean protective packaging before shipment.
Custom UV Cut Filter Options
Bandpass Filter Type Comparison
| Filter Type | Typical FWHM | Peak Transmission | Blocking (OD) | Typical Applications |
|---|---|---|---|---|
| UV Cut Filter | N/A — longpass edge (UV block / visible pass) | >90% in visible band | High blocking in UV band | Imaging, machine vision, sensor protection |
| Narrow Bandpass Filter | 1 – 10 nm | >90% | OD4 – OD6+ | Laser line selection, fluorescence |
| Standard Bandpass Filter | 10 – 50 nm | >90% | OD4 – OD6+ | Machine vision, instrumentation |
| Wide Bandpass Filter | 50 – 200 nm | >90% | OD4 – OD6 | Imaging, spectroscopy |
Applications of UV Cut Filter
Imaging Systems
UV blocking for accurate color reproduction and imaging stability.
Machine Vision Cameras
Sensor protection and improved image accuracy for machine vision.
Optical Sensors
Reduced UV interference for optical sensor accuracy.
Fluorescence Imaging Systems
UV blocking for fluorescence imaging setups.
Display Systems
Visible light transmission control for display applications.
Optical Instruments
UV protection for precision optical instrument design.
UV Cut Filter FAQ
What is the function of a UV cut filter?
A UV cut filter blocks ultraviolet wavelengths while transmitting visible light, helping reduce UV interference in optical systems.
What is the difference between a UV cut filter and a UV pass filter?
A UV cut filter blocks ultraviolet wavelengths, while a UV pass filter transmits ultraviolet wavelengths and blocks longer wavelengths.
Can UV cut filters be customized?
Yes. Cutoff wavelength, substrate material, dimensions, and coating specifications can be customized.
Does incident angle affect UV cut filter performance?
Yes. The cutoff wavelength may shift with incident angle, so coating design should match the optical system configuration.
What information should I provide for a quotation?
Please provide cut-off wavelength, substrate material, dimensions, angle of incidence, quantity and drawing if available.
Where can I learn more about UV cut filter design?
Additional information on UV cut filter design can be found from Edmund Optics.
Related Products for UV Cut Filter
Need Custom UV Cut Filters?
Send us your cut-off wavelength, substrate, dimensions, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable UV cut filter manufacturing suggestion.