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PRODUCT OVERVIEW
Introduction
Shortpass filters are optical filters designed to transmit wavelengths below a specified cut-off wavelength while blocking longer wavelengths. The spectral edge defines the transition between the transmitted and rejected regions, allowing shorter wavelength signals to pass while suppressing unwanted long-wavelength light.
The cut-off wavelength, transition steepness, and blocking level are key parameters in shortpass filter design and can be tailored to different optical requirements. Spectral response may also vary with the angle of incidence, making coating design and operating geometry important considerations when integrating the filter into precision optical systems.
Applications
- UV and visible imaging systems
- Fluorescence excitation systems
- Optical detector systems
Features & advantages
- Precise cut-off wavelength control for defined spectral separation
- High transmission within the short-wavelength pass region
- Sharp spectral transition for improved wavelength control
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TECHNICAL DATA
Product specifications
ENGINEERING & OPTIONS
Technical capabilities & processing options
- Multilayer Optical Coating:
Controlled dielectric coating processes enable customized cut-off wavelengths and long-wavelength blocking performance for different spectral requirements. - Spectral Edge Control:
Coating design and process control support precise transition steepness between transmitted and blocked wavelength regions. - Substrate and Surface Processing:
Precision substrate preparation and optical surface finishing maintain consistent transmission quality and dimensional accuracy. - Spectral Inspection and Verification:
Optical testing verifies transmission curves, cut-off wavelength accuracy, and out-of-band blocking performance for consistent filter quality.
CUSTOM OPTICS
Need a Custom Shortpass Filter?
Share your cutoff wavelength, transmission range, blocking requirements, and filter dimensions. Our team can review optical specifications and coating design for your custom shortpass filter.
Looking for standard sizes? View stock shortpass filters