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PRODUCT OVERVIEW
Introduction
Dichroic filters are wavelength-selective optical filters that transmit one spectral region while reflecting another. Their multilayer dielectric structure allows different wavelength bands to be separated or combined within the same optical path, making them particularly useful where spectral routing is required rather than simple wavelength blocking.
Unlike absorptive filters that remove unwanted light, dichroic filters redirect selected wavelengths through controlled reflection and transmission. Their spectral response can be designed around transition wavelength, angle of incidence, and polarization requirements, allowing precise integration into multi-wavelength optical systems.
Applications
- Fluorescence microscopy systems
- Laser beam combining and separation systems
- Projection and display optical systems
- Multi-wavelength imaging systems
Features & advantages
- Selective transmission and reflection of different wavelength bands
- Efficient spectral splitting without absorbing most rejected light
- Sharp transition between reflected and transmitted regions
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TECHNICAL DATA
Product specifications
ENGINEERING & OPTIONS
Technical capabilities & processing options
- Multilayer Dielectric Coating:
Controlled thin-film coating processes enable customized reflection and transmission characteristics for different wavelength ranges. - Spectral Transition Control:
Coating design and process management support precise transition wavelengths and sharp spectral edges for wavelength-selective applications. - Angle and Polarization Optimization:
Dichroic filter designs can be adapted for specific angles of incidence and polarization conditions to maintain required spectral performance. - Spectral Inspection and Verification:
Optical testing verifies transmission, reflection, transition wavelength, and spectral consistency to ensure reliable filter performance.
CUSTOM OPTICS
Need a Custom Dichroic Filter?
Share your transmission band, reflection band, angle of incidence, and filter dimensions. Our team can review spectral requirements and coating design for your custom dichroic filter.
Looking for standard sizes? View stock dichroic filters