Hot Mirror, 50.8 x 50.8 mm, 0° AOI, 420-690 nm Transmittance

The 20HMS-0 Hot Mirror is a 50.8 x 50.8 mm square 0° mirror used as a heat control filter. Our hot mirrors are heat-reflecting shortpass filters designed to transmit 420-690 nm visible wavelengths while reflecting 725-1550 nm near-infrared heat generating wavelengths. These filters can be used to remove heat from an optical system.

Specifications

Technical Specs

Type
Hot Mirror
Optic Size
50.8 x 50.8 mm
Angle of Incidence
0° ±15°
Transmittance Range
420-690 nm
Transmission
≥85%
Reflectance Band
725-1550 nm
Reflectance
Ravg≥90% 725-1550 nm
Material
Borofloat® borosilicate float glass

Surface Flatness
6–8λ per 25.4 mm at 546.1 nm over the clear aperture
Thickness
3.3 mm
Thickness Tolerance
±0.2 mm
Size Tolerance
±0.4 mm
Clear Aperture
≥central 90% of dimensions
Temperature Range
-100 to 500°C
Cleaning
See How to Clean Optics

Type
Hot Mirror
Optic Size
50.8 x 50.8 mm
Angle of Incidence
0° ±15°
Transmittance Range
420-690 nm
Transmission
≥85%
Reflectance Band
725-1550 nm
Reflectance
Ravg≥90% 725-1550 nm
Material
Borofloat® borosilicate float glass

Surface Flatness
6–8λ per 25.4 mm at 546.1 nm over the clear aperture
Thickness
3.3 mm
Thickness Tolerance
±0.2 mm
Size Tolerance
±0.4 mm
Clear Aperture
≥central 90% of dimensions
Temperature Range
-100 to 500°C
Cleaning
See How to Clean Optics

Resources & Downloads

3D Product Models

Other

20HMS-0 RoHS Certificate(264.5 kB, PDF)
20HMS-0_ROHS2-2021.pdf(279.3 kB, PDF)

Related Products

Similar

Description	Compatibility
Cold Mirror, 25.4 mm, 45° AOI, 780-2500 nm Transmittance	UNIVERSAL	Learn More
Hot Mirror, 25.4 mm, 0° AOI, 420-690 nm Transmittance	UNIVERSAL	Learn More
Cold Mirror, 50.8 x 50.8 mm, 45° AOI, 780-2500 nm Transmittance	UNIVERSAL	Learn More

Compatible

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		Optical Filter Holder, Drop-in, 50.8 mm Optics	UNIVERSAL				Learn More

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