Germanium Optical Windows

General Introduction: The Raytek germanium window is very suitable for infrared applications of various wavelengths, including in low power CO2 lasers. Germanium also has low dispersion and is an ideal choice for imaging applications. The window sheet is coated with antireflection film, which can provide high transmittance of 3 to 12 μM..

 

Products Name: Germanium Optical Windows

Alias: Germanium Optical Window, Germanium windows, Germanium infrared windows, Germanium infrared optical windows, Germanium protective windows,CO2 Laser Protective Windows, CO2 Laser Windows,etc

 

Lens Substrates:

Optical Grade Germanium

 

Optional I:	Optical Grade Germanium from CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,ETC
Optional II:	Equivalent Optical Grade Germanium Made in China, C-laser own brands

 

Coating:

3 to 12 μm broadband coating

Our Ge parallel window is coated with ar.20 broadband antireflective film, which is suitable for the wavelength range of 3 μm to 12μM

 

Main Applying:

Applying Fields I:	Application of low power CO2 laser in laser.
Applying Fields II:	Application of CO2 laser cavity imaging
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Products Highlights:

1).Good choice for near infrared applications

2).3 to 12aμ m wide band antireflective coatings

3).Excellent applications requiring low dispersion

4). Good choice for low power CO2 laser applications

5).Different grades materials for option.

6).High precision & high surface roughness;

7).Sizes can be customized as per the customers’ request

8).Quick lead time and delivery time.

9).Matching super optics custom and processing capacity, including Moulding, CNC machining, Polishing, Particle beam processing, Magnetic flux conversion processing, Grinding, Coating, Lightweighting, Custom Shaping, Counterbores, Drilling & Coring, Edge & Bevel Polishing,3D Contouring, Bevels & Chamfers, Steps & Slots, Laser Cutting & Marking, Metrology & Inspection, Precision Pitch Polishing, Double-Sided Polishing, Optical Assembly, Measuring, etc.

10).Excellent post-sale quality warranty, with “3R”-return, replace & refund policy

 

Main Optical Tech Specification:

Lens Shape	Optical Parallel Window	Surface Accuracy Irregularity	-
Lens Material	Optical Grade Germanium	Diameter Tolerance	-
Coating	3 to 12 μm broadband coating	Thermal limit	59 W m-1 K-1 @ 293 K
Coating Type	-	Coefficient of thermal expansion	6.1 x 10-6 K-1 @ 298 K
Damage Threshold	-	Dia. Tolerance	10GE20: ±0.2 mm GEW: +0.0/-0.1 mm
Thickness Tolerance	-	Parallelism	-
Surface Quality	40-20cratch-dig	Clear Aperture	10GE20: central 85% of diameter GEW: central 90% of diameter
Surface Flatness	λ/20 @ 10.6um	OEM/ODM	Accepted

 

Popular Physical Size Specification:

 

Basic Data	Value
Popular Dia.Value I	25.4mm
Matching Thickness I	2.0mm
Surface Flatness I	λ/20 @ 10.6um
Parallelism(Wedge) I	<3 arc minute
AR. Coating Model I	Uncoating
Popular Dia.Value II	25.0mm/50.0mm/75.0mm,etc
Matching Thickness II	3.0mm,5.0mm,etc
Surface Flatness II	λ/20 @ 10.6um
Parallelism II	≤1arc min;
AR.Coating Model II	3 to 12 μm broadband coating
Other Size Speicification	Custom manufacturing as per demand

 

Main Cooperation Materials Manufacturers:

CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC

 

Main Export Countries & Areas:

Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.

 

Raytekoptics Extra value added services offered:

1). Optical workcraft & process solution design;

2). Rough processing raw materials;

3). Semi finishing raw materials;

4). Fabricate custom sizes and shapes;

5). Design and supply custom coatings;

6). Modify and resurface customer supplied materials;

7). Drill holes, notch glass and provide beveled substrates;

8). Precision polish optics with non-standard aspect ratios;

 

Payment Method: by T/T or Western Union.

Delivery time: 7-10 days.

Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with “3R” policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.