Dichroic Filter

Factory Standard – Contact us for manufacturing limit or custom specifications

• Angle of Incidence: 45.0°
• Shortpass Type Transmittance: Tabs>85%
• Dimensions: 25.2mm*35.6mm*1.1 mm
• Clear Aperture: >95%
• Operating Temperature: -45°C ~ 85°C
• Physical Durability: MIL-C-48497A
• Longpass Type Transmittance: Tabs>90%
• Reflection Band: Rabs>98%
• Thickness Tolerance: ±0.1 mm
• Transmitted Wavefront: 1/4λRMS@633nm (per inch)
• Environmental Durability: MIL-STD-810F
• Substrate: UV Grade Fused Silica

Dichroic optical filters consist of thin film dielectric coatings on glass and exhibit sharp transitions between transmitted and reflected wavelengths. Dichroic filters are similar to traditional interference filters but differentiate themselves by reflecting all unwanted wavelengths. Consequently our dichroic range also offers minimal absorbance characteristics.

Our dichroic filters are available in longpass, shortpass, bandpass, bandblocking and colour correction types over a range of wavelengths. Dichroic shortpass and longpass filters can also act as hot and cold mirrors respectively.