OPTICS

WINDOWS

Optical windows play an essential role in protecting optical components in many optical systems.
The optical lens supplier3L-Systems offers optical windows used across various industries.

ZnSe window
WINDOWS

WINDOWS AND OPTICAL FLATS

Optical windows are used to create a physical barrier between two different environments.
This prevents unwanted mixing, isolating liquids from the air and maintaining system’s vacuum state.
Optical windows are used in many optical systems to protect optical components from cases like back-splatter and out-gassing.
While optical windows can be manufactured in various shapes, they are typically produced in round or rectangular shapes.
Moreover, optical windows are constructed with two flat (PLANO) polished surfaces that possess optical characteristics.

3L-Systems provides prototype and mass-produced optical windows applicable to ultraviolet, visible,and infrared wavelength ranges.

PLANE WINDOWS - WEDGE < 3 MIN.

SPEC

Substrate CaF2(VUV), CaF2(IR), SUPRASIL 1, Sapphire, Silicon, Germanium, Zinc Sulfide , or ZnSe window
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Transmitted Wavefront measure at 633 nm
Wedge < 3 arc min.
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

PARALLEL WINDOWS - WEDGE < 10 SEC.

SPEC

Substrate CaF2(VUV), CaF2(IR), SUPRASIL 1, Sapphire, Silicon, Germanium, Zinc Sulfide, or ZnSe window
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Transmitted Wavefront measure at 633 nm
Wedge < 10 arc min.
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

INTERFEROMETER FLATS - WEDGE 30 ± 5 MIN.

SPEC

Substrate SUPRASIL 1, UV Fused Silica, or BK7
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness λ /10 @ 633 nm 
Surface Quality 10-5 Laser Quality
Wedge 30 ± 5 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

LARGE WEDGE WINDOWS – 1˚, 2˚, AND 3˚

SPEC

Substrate UV Fused Silica, or BK7
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness λ /10 @ 633 nm 
Surface Quality 10-5 Laser Quality
Wedge 30 ± 6 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

SQUARE WINDOWS

SPEC

Substrate UV Fused Silica, or BK7
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness measure at 633 nm
Surface Quality 10-5 Laser Quality
Wedge 3 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

RECTANGULAR WINDOWS

SPEC

Substrate UV Fused Silica, or BK7
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness measure at 633 nm
Surface Quality 10-5 Laser Quality
Wedge 3 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

ELLIPTICAL WINDOWS

SPEC

Substrate UV Fused Silica, or BK7
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness λ /10 @ 633 nm
Surface Quality 10-5 Laser Quality
Wedge 3 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚

BREWSTER WINDOWS

SPEC

Substrate SUPRASIL 1 OR UV Fused Silica
Diameter Tolerance +0.0/-0.20 mm
Thickness Tolerance ±0.25 mm
Surface Flatness λ /10 @ 633 nm
Surface Quality 10-5 Laser Quality
Wedge 3 arc min .
Clear Aperture > 85% of diameter
Edge Bevel 0.3 mm face width at 45˚