CVD Zinc Selenide/Zinc Selenide Lens/Zinc Selenide Windows/Znse Optical Window

• After-sales Service: 3r Quality Warranty-Return, Replacement, Refund
• Warranty: 12months
• Usage: Lighting, Medical, Optical, Photography, Astronomy, Laser, Communication
• Type: Zinc Selenide
• Transmittance: 10% Transmission Limits(T=6mm):0.5-22um
• Shape: Single-lens
• Model NO.: RAY-OS096#
• Material: Zinc Selenide
• Lenses Color: Yellow-Red
• Certification: RoHS, BV
• Customized: Customized
• Coating: Coating/Uncoating/Polishing
• Substrate: Zinc Selenide
• 10% Transmission Limits (T=6mm): 0.5-22um
• Index of Refraction Inhomogeneity (DN/N): Less Than 3ppm @633nm
• Coefficient of Thermal Expansion: [K-1] @273K 7.1 X 10(-6)
• Thermal Conductivity: 18
• Heat Capacity: 0.339
• Chemical Purity [%]: 99.9996
• Transport Package: Wood Case
• Specification: 400mm*400mm*100mm
• Trademark: Hellma
• Origin: Germany
• HS Code: 9001909090
• Production Capacity: 100000kg Per Year

Product Description

General Introduction: CVD Zinc Selenide
Chemically vapor deposited CVD Zinc Selenide is the material of choice for use as optical components in high powered CO2 lasers due to its low bulk absorption at 10.6 microns. Its index of refraction homogeneity and uniformity offers excellent optical performance for use as protective windows or optical elements in high resolution forward looking (FLIR) thermal imaging equipment. This material has also been used as small windows and lenses in medical and industrial applications, such as thermometry and spectroscopy.
CVD Zinc Selenide is chemically inert, non-hygroscopic, highly pure, theoretically dense and easily machined. It has extremely low bulk losses due to absorption and scatter, has a high resistance to thermal shock and is stable in virtually all environments.
Custom diameters, rectangles, CNC-profiled blanks, generated lens blanks, prisms and near-net shape domes can be made to your specifications.

Products Name: CVD Zinc Selenide
Alias: CVD Zinc Selenide, Zinc Selenide, Hellma Zinc Selenide, Hellma CVD Zinc Selenide, Hellma ZnSe, Hellma ZnSe materials, Hellma ZnSe IR materials, Zinc Selenide IR glass, ZnSe IR glass, ZnSe Optical Widnows, Hellma Zinc Selenide Infrared materials, ZnSe Infrared materials, etc.
, etc.

Main Characteristics:
1).The chemical properties of CVD ZnSe Of Hellma matrials are inert;
2). It has non hygroscopicity and high purity;
3). Very compact and easy to machine;
4). It has good absorption and scattering ability;
5).The volume loss of this material is very low,
6).It has high tolerance to thermal shock;
7).It can maintain its stability under almost all environmental conditions.
8).Round blanks and sheets are available in stock to meet your urgent needs

Thermal Properties:

Items	Value
Coefficient of Thermal Expansion [K-1] @273K 7.1 x 10-6 [K-1] @373K 7.8 x 10-6 [K-1] @473K 8.3 x 10-6	[K-1] @273K 7.1 x 10^-6 [K-1] @373K 7.8 x 10-6 [K-1] @473K 8.3 x 10-6
Thermal conductivity [JK^-1m^-1s^-1] @298K	18
Heat capacity [Jg^-1K^-1] @298K	0.339

Mechanical Properties:

Items	Value
Hardness: Knoop, 50g load [kg mm^-2] 110 Vickers, 1kg load [kg mm^-2]	110 112
Flexural strength (modulus of rupture) 4pt. loading [psi] 4pt. loading [MPa]	8 x 10^3 55
Fracture toughness (critical stress intensity factor, KIC values) [MPa m, Vickers, 100g]	0.5
Posssion's Ration u	0.343
Young's modulus [psi] [GPa]	9.75 x 10^6 67.2
Poisson's ratio	0.28
Crystal structure	Cubic
Grain size	50-70um
Density [g/cm^-3] @298K	5.27
Resistivity [ cm]	~10^12
Chemical purity [%]	99.9996

Optical Properties:

Items	Value
10% transmission limits (t=6mm)	0.5μm - 22μm
Index of refraction inhomogeneity (Dn/n)	<3ppm @633nm
Thermo-optic coefficient dn/dT (298-358K) K^-1 @ 0.6328μm K^-1 @ 1.15μm K^-1@ 3.39μm K^-1 @ 10.6μm	1.07 x 10-4 7.0 x 10-5 6.2 x 10-5 6.1 x 10-5
Bulk absorption coefficient cm^-1 @ 1.3μm cm^-1  @ 2.7μm cm^-1  @ 3.8μm cm^-1  @ 5.25μm cm^-1  @ 10.6μm	5.0 x 10^-3 7.0 x 10^-4 4.0 x 10^-4 4.0 x10^-4 5.0 x 10^-4

Main Applying Fields:

Applying Fields:	1).High energy CO2 laser system 2).High resolution forward looking infrared (fur) 3).Protection window of thermal imaging equipment 4).Small size windows and lenses for medical and industrial applications, such as thermometers and spectrometers. 5). Evaporation source material
*****

Matching Custom Manufacturing Serivce:
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.
Matching processing equipments;
1).Single side lapping and polishing machines
2).Duble sided polishing machines
3).Ring throwing machines
4).DMG five-axis five-linkage spherical milling machine
5).DMG ultrasonic machining center
6).Super large scale gantry cnc machining center (2.0*2.0m)
7).Super large scale surface grinder (1.6m*1.6m)
8).CNC cutting machines
9).Thin plate cleaning machines
10).Ultrasonic trough cleaning machines
11).Plane interferometers
12).Two dimensional detectors
13).Ion beam polishing machines
14).Magnetorheological polishing equipments

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--return, replace & refund policy.
For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.