Dichroic Shortpass Filter
Dichroic Shortpass Filters are precision optical filters designed to transmit shorter wavelength ranges while reflecting or blocking longer wavelengths. Using advanced dielectric coating technology, dichroic shortpass filters provide high transmission within the target spectral range and efficient rejection outside the passband. Chenyu Optics manufactures dichroic shortpass filters in optical glass and fused silica with custom cutoff wavelengths, coating designs and substrate options.
Dichroic Shortpass Filter Overview
Dichroic Shortpass Filters are precision optical filters designed to transmit shorter wavelength ranges while reflecting or blocking longer wavelengths outside the target spectral region.
Using advanced dielectric coating technology, dichroic shortpass filters provide high transmission within the short wavelength passband and high reflection performance for longer wavelengths. They are widely used in fluorescence imaging, optical sensing, laser systems, microscopy and spectral measurement applications.
Chenyu Optics supports custom dichroic shortpass filter manufacturing according to customer drawings, including custom substrate materials, dimensions, cutoff wavelengths, coating designs and optical specifications for prototype and repeat production.
Key Advantages of Dichroic Shortpass Filter
Fluorescence Imaging & Laser Systems
Dichroic shortpass filters are widely used for short wavelength isolation in fluorescence imaging systems, laser systems, microscopy and optical sensing equipment.
Typical Specifications of Dichroic Shortpass Filter
| Material Options | Optical Glass, BK7, Fused Silica |
|---|---|
| Coating Type | Dielectric shortpass coating |
| Optical Function | Short wavelength transmission / long wavelength rejection |
| Cutoff Wavelength | Customizable |
| Transmission Band | Customizable |
| Transmission | High transmission within short wavelength passband |
| Blocking | High optical density at longer wavelengths |
| Surface Quality | High precision optical finish |
Spectral Transmission Curve (Typical)
Why Choose Chenyu Optics for Dichroic Shortpass Filter
Chenyu Optics focuses on drawing-based precision filter manufacturing for fluorescence imaging, laser systems, microscopy and industrial optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard dichroic shortpass filters.
Manufacturing Capability for Dichroic Shortpass Filter
Precision Polishing
High surface quality processing for stable filter performance.
Dielectric Coating
High performance dielectric shortpass coating for precise cutoff wavelength control.
Inspection & Packaging
Strict quality control on cutoff wavelength, transmission and blocking, with clean protective packaging before shipment.
Custom Dichroic Shortpass Filter Options
Cutoff Filter Type Comparison
| Filter Type | Cutoff Behavior | Peak Transmission | Blocking (OD) | Typical Applications |
|---|---|---|---|---|
| Dichroic Shortpass Filter | Transmits short, reflects long | >90% | OD4 – OD6+ | Fluorescence, laser systems |
| Dichroic Longpass Filter | Transmits long, reflects short | >90% | OD4 – OD6+ | Fluorescence, microscopy |
| Dichroic Filter | Selective transmit / reflect | >90% | OD4 – OD6+ | Beam separation, imaging |
| Bandpass Filter | Transmits selected band only | >90% | OD4 – OD6+ | Machine vision, instrumentation |
Applications of Dichroic Shortpass Filter
Fluorescence Imaging Systems
Short wavelength isolation for fluorescence excitation paths.
Laser Systems
Short wavelength beam separation in multi-wavelength laser setups.
Microscopy Equipment
Spectral edge control for excitation light in microscopy systems.
Optical Sensing Systems
Short wavelength selection for optical sensor design.
Spectral Measurement Instruments
Precise cutoff control for spectral measurement and calibration.
Beam Management Systems
Short wavelength routing and rejection for beam management applications.
Dichroic Shortpass Filter FAQ
What is a dichroic shortpass filter used for?
A dichroic shortpass filter transmits shorter wavelengths while reflecting or blocking longer wavelengths outside the target passband.
What parameters define a dichroic shortpass filter?
Key parameters include cutoff wavelength, transmission band, peak transmission, optical density blocking, and incident angle.
How is a dichroic shortpass filter different from a longpass filter?
A shortpass filter transmits shorter wavelengths and reflects longer ones, while a longpass filter does the opposite.
Can dichroic shortpass filters be customized for different cutoff wavelengths?
Yes. Filters can be customized for UV, visible, and near-infrared cutoff wavelengths.
Does incident angle affect dichroic shortpass filter performance?
Yes. The cutoff wavelength can shift with incident angle, so coating design should match the optical setup.
What information should I provide for a quotation?
Please provide cutoff wavelength, transmission band, substrate material, dimensions, angle of incidence, quantity and drawing if available.
Where can I learn more about dichroic shortpass filter design?
Additional information on dichroic shortpass filter design can be found from Edmund Optics.
Related Products for Dichroic Shortpass Filter
Need Custom Dichroic Shortpass Filters?
Send us your cutoff wavelength, transmission band, substrate, dimensions, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable dichroic shortpass filter manufacturing suggestion.