Excellent quality Plano-Concave Spherical Lens - Customized Sapphire/Fused Silica/Bk7 Optical Aspherical Lens – DG

Optical Windows

Optical windows are flat, plane-parallel plates, they are offen used as protective barriers for electonic sensors or detectors from outside enbironments, we offer optical windows those are made from different materials, such as Germanium (Ge), Silicon (Si), N-BK7(k9), Fused Silica, Zinc Selenide (ZnSe) and other choice as your requirements, About the Ultraviolet (UV), visible, or Infrared (IR) optical windows, we offer multipe anti-reflection coating choice to fulfill your need.

N-bk7(k9) material has a lot of advantage in many different way, like the excellent quality, and uniform transmission in the visible, there are virtually free of bubbles and inclusions, very high refractive index homogeneity.

Fused silica windows has a high degree of purity, and normally they are superior enviromental durability, extremley temperature resistant ability, they have excellent transmission from UV to the NIR, exceptional hardness for demanding application which require a high degree of flatness.

Windows are applied to isolate different physical environments while allowing light to pass. When selecting windows you should consider materials, transmission, scattering, wavefront distortion, parallelism and resistance to certain environment. Tempotec offers a wide range of different materials and different degree of precision windows. Tempotec provides serveral kinds windows for defferent applications. Customer designed special windows are available.

Material: BK7, Fused silica, Quartz, Germanium(Ge), Silicon(Si).

Precision Windows

Ideal for interferometer flats, laser windows, beamsplitter substrates, or parallel plates.
Material: BK7 and Fused silica typically. Other Glass, Quartz, Germanium(Ge), Silicon(Si) are also available.

Commercial Quality Windows

Non-precision windows commonly used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, etc.

Specifications:
Diameter Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.2mm
Clear Aperture: >85%
Parallelism: 1′
Surface Quality: 60-40 scratch and dig
Flatness: λ/4 @632.8nm
Protective Bevel
AR coating is available by request.
R<0.2%@single wavelength
Ravg<0.5%@broadband wavelength range

Laser Windows

With perfect surface polishing, the window have extremly smooth surface to fit fot the high power application.

It also can be used as substrate for laser mirror, laser coupler, etc.

Material: BK7 or Fused silica

Specifications:
Diameter Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.2mm
Clear Aperture: >85%
Surface Quality: Better than 10-5
Flatness: Better than λ/10 @632.8nm
Parallelism: up to 5″
Protective Bevel
High damage threshold AR coating is availabe.

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