Your Trusted High-Performance Optical Filters China Manufacturer Partner
Coligh Optics is a leading optical filter manufacturer specializing in the design and production of a wide range of optical glass filters to meet the diverse needs of applications such as photonics, communications, imaging, and scientific research.
Custom Optical Filter Series
With expertise in precision thin-film coating, we manufacture and customize various types of optical filters, including:
1. Wavelength Filters: Covering a spectral range from 200nm to 14,000nm.
2. Optical Bandpass FiltersI (Also called band pass filter or BP filter):
- UV Bandpass Filter
- Visible Bandpass Filter
- NIR Bandpass Filter
- Infrared Bandpass Filter (IR Bandpass Filter)
3. Optical Longpass and Short pass Filters
- UV Shortpass Filter
- Infrared Longpass Filter (IR Longpass Filter)
4. Dichroic Filters/Dichroic Mirrors
5. Optical Notch Filters
6. Filter Bandwidth Options:
- Ultra-Narrow Bandpass Filters (as narrow as 0.4nm bandwidth)
- Wide Bandpass Filters
7. Custom Optical Filters: We provide tailor-made solutions to meet the unique requirements of various industries.
Why Choose Coligh for optical interference filter?
- We have served numerous industries and possess extensive industry experience, with a deep understanding of the specific optical filter requirements for each sector.
- Precision Manufacturing: Advanced thin-film deposition techniques ensure superior optical performance.
- Wide Range of Products: Covering UV, VIS, NIR, and IR spectral ranges.
- Bandwidth of filter various from ultra narrow band pass filter FWHM 0.4nm to very broad bandwidth
- High transmission to reach 99% and above, deep blocking depth to above OD6
- Custom Solutions: Flexible designs to meet diverse application needs.
- High Reliability: Robust materials and coatings for long-lasting performance.
- Global Reputation: Trusted by industry leaders for our commitment to quality and innovation.
Optical Coating Thin Film Interference Filter Application
Machine Vision
Our bandpass filters and infrared filters are used to optimize image quality and improve detection accuracy in applications such as robotic vision, automated assembly inspection, industrial robots, and automation detection.
Biomedical Life Science
Our wavelength filters, covering 200-1100nm, include UV, Visible, NIR, and SWIR filters, and are widely utilized in applications such as fluorescence microscopy, PCR, OCT, Raman spectroscopy, flow cytometry, and biomedical imaging systems.”
Aerospace and semiconductor
In aerospace and semiconductor equipment, our spectrua filters are used in laser communication, spectral analysis, and optical sensor imaging systems to achieve high-precision measurements and analysis.
Consumer Electronics and Entertainment
By precisely controlling the transmission of light waves, our color filters are widely used in the consumer electronics and entertainment industry, including screen defect detection instruments, camera module inspection equipment, VR, AR, and more.
