CVD Zinc Sulfide/Zinc Sulfide Optical Lens/Zinc Sulfide Machining/Zinc Sulfide Optical Windows

• After-sales Service: 3r Quality Warranty-Return, Replacement, Refund
• Warranty: 12months
• Usage: Lighting, Medical, Optical, Photography, Astronomy, Laser, Communication
• Type: Zinc Sulfide
• Transmittance: 10% Transmission Limits(T=6mm):1.0-14um
• Shape: Single-lens
• Model NO.: RAY-OS098#
• Material: Zinc Sulfide
• Lenses Color: Yellow
• Certification: RoHS, BV
• Customized: Customized
• Coating: Coating/Uncoating/Polishing
• Substrate: Zinc Sulfide
• 10% Transmission Limits (T=6mm): 1.0-14um
• Index of Refraction Inhomogeneity (DN/N): Less Than 100ppm @10.6um
• Coefficient of Thermal Expansion: [K-1] @273K 6.6 X 10(-6)
• Thermal Conductivity: 16.7
• Heat Capacity: 0.469
• Chemical Purity [%]: 99.996
• Transport Package: Wood Case
• Specification: 450mm*450mm*38mm
• Trademark: Hellma
• Origin: Germany
• HS Code: 9001909090
• Production Capacity: 100000kg Per Year

Product Description

General Introduction: CVD Zinc Sulfide
CVD Ceramics' chemically vapor deposited CVD Zinc Sulfide is the low cost alternative for infrared windows, domes and optical elements. With a fracture strength double that of zinc  Sulfide and high hardness, zinc sulfide has been used successfully in many military applications requiring mechanical resistance to hostile environments. Cleartran is a form of CVD Zinc Sulfide material that is modified by a post-deposition hot isostatic process. This process removes zinc hydrides from the crystal lattice, normalizes crystal structure and purifies the material, all contributing to single crystal-like transmittance in the visible through far infrared ranges (0.35 -14 microns). With its low absorption and scatter throughout its broad transmitting range and high optical quality, is particularly well-suited for multi-spectral applications that require a single aperture for beam path for several wavebands.
CVD Zinc Sulfide and Cleartran are chemically inert, non-hygroscopic, highly pure, theoretically dense and easily machined.
Custom diameters, rectangles, CNC-profiled blanks, generated lens blanks, prisms and near-net shape domes can be made to your specifications.
CVD Zinc Sulfide usually is used in VIS/IR applications

Products Name: CVD Zinc Sulfide
Alias: CVD Zinc Sulfide, Zinc Sulfide, Hellma Zinc Sulfide, Hellma CVD Zinc Sulfide, Hellma ZnS, Hellma ZnS materials, Hellma ZnS IR materials, Zinc Sulfide IR glass, ZnS IR glass, ZnS Optical Widnows, Hellma Zinc Sulfide Infrared materials, ZnS Infrared materials, ZnS Cleartran, Hellma ZnS Cleartran, CVD ZnS, CVD Zns materials,etc.
, etc.

Main Characteristics:
1).Its breaking strength is twice that of ZnSe, and its hardness is very high;
2).Excellent mechanical properties make it highly resistant to rain and dust
3).Its low cost also makes it very attractive for business and application
4).The chemical properties of CVD ZnS are inert
5).It has non hygroscopicity and high purity
6).Theoretically very compact and easy to machine
7).Same to ZnSe, ZnS exhibits high refractive uniformity and provides imaging uniformity over the entire 8-12 micron band
8).This kind of material can also transmit in the medium wave IR region, but with the increase of wave number, its absorption and scattering begin to increase
9).It can be used as a source of evaporation
10).It can maintain its stability under almost all environmental conditions.
11).Round blanks and sheets are available in stock to meet your urgent needs

Thermal Properties:

Items	Value
Coefficient of Thermal Expansion [K-1] @273K [K-1] @373K [K^-1] @473K [K^-1] @208-573K	[K-1] @273K 6.6 x 10^-6 [K-1] @373K 7.3 x 10-6 [K-1] @473K 7.7 x 10-6
Thermal conductivity [JK^-1m^-1s^-1] @298K	16.7
Heat capacity [Jg^-1K^-1] @298K [Jg^-1K^-1] @273K [Jg^-1K^-1] @323K [Jg^-1K^-1] @373K	0.469

Mechanical Properties:

Items	Value
Hardness: Knoop, 50g load [kg mm^-2] Vickers, 1kg load [kg mm^-2]	200-235 230
Flexural strength (modulus of rupture) 4pt. loading [psi] 4pt. loading [MPa]	15 x 10^3 103 84
Fracture toughness (critical stress intensity factor, KIC values) [MPa m, Vickers, 100g]	0.8
Posssion's Ration u	0.290
Young's modulus [psi] [GPa]	10.8 x 10^6 74.5
Poisson's ratio(Cleartran)	0.28
Crystal structure	Cubic
Grain size	2-8um
Density [g/cm^-3] @298K	4.09
Resistivity [ cm]	~10^12
Chemical purity [%]	99.996

Optical Properties:

Items	Value
10% transmission limits (t=6mm)	1.0μm - 14μm
Index of refraction inhomogeneity (Dn/n)	<100ppm @10.6um
Thermo-optic coefficient dn/dT (298-358K) K^-1 @ 0.6328μm K^-1 @ 1.15μm K^-1@ 3.39μm K^-1 @ 10.6μm	4.6 x 10-5 4.3 x 10-5 4.1 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	2.0 x 10^-1

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.