Premium Fused Silica Optical Glass for Precision Measurement Instruments

• Customization: Available
• Certification: CE, ISO, BV
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass, Astronomy, Medicine, Biology, Communication, Milit
• Model NO.: RAY-LH320#
• Type: Fused Silica
• Substrate: Fused Silica
• Fs800: Oh Is More Than 800ppm
• Fs200: Oh Is More Than 200ppm
• Fs20: Oh Is Less Than 20ppm
• Fs1: Oh Is Less Than 1ppm
• Transport Package: Wood Case
• Specification: 500*500*500
• Trademark: Raytek
• Origin: China
• HS Code: 2811229000
• Production Capacity: 100000kg Per Year

Product Description

General Introduction: Fused silica glass
Raytek fused silica is an ultra-pure, amorphous form of glass that is made from high purity silica. Typically, the concentration of silica is greater than 99.9999% with miniscule quantities of other metal oxides. Due to its extremely high purity, it finds many applications in optical windows, optical components for UV transmission, IR optics (with OH- ions removed), semiconductors, metrology and more. Raytek is committed to providing high quality fused quartz. According to the content of hydroxyl (OH), fused quartz can be divided into high hydroxyl, medium hydroxyl and low hydroxyl.
The characteristics of fused silica products include: extremely low refractive index change, resulting in the highest level of homogeneity; The birefringence is very low; Large size; Excellent transmittance from UV to IR; And ultra-low coefficient of thermal expansion; All of these features are critical to meeting the demanding requirements of customers.

Products Name: Fused silica glass
Alias: Fused silica glass, Fused silica, C-laser fused silica, quartz glass, quartz, Corning fused silica, Ohara fused silica, Schott fused silica, optical fused silica, optical quartz, optical fused silica glass, optical quartz glass, etc

Main Characteristics:
A number of unique optical, mechanical and thermal properties have made quartz glass an indispensable material in the fabrication of high-tech products. they have the follwing main characters:
1).High chemical purity and resistance,
2).High softening temperature and thermal resistance,
3).Low thermal expansion with high resistance to thermal shocks,
4).High transparency from the ultraviolet to the infrared spectral range,
5).High radiation resistance.
6).The change of refractive index is very low;
7).High level of homogeneity;
8).The birefringence is very low;
9).Large size available;
10).Excellent transmittance from UV to IR;
11).Ultra low coefficient of thermal expansion;
12).Low cost

Raytek Fused Silica Types:

Model	Hydroxyl (OH) content
FS800	OH≥800ppm
FS200	OH≤200ppm
FS20	OH≤20ppm
FS1	OH≤1ppm

Thermal Properties:

 

Model	FS800	FS200	FS20	Viscosity
Softening point*	1585°C	1627°C	1627°C	107.6 poise.
Annealing point*	1042°C	1180°C	1180°C	1013 poise.
Strain point*	893°C	1068°C	1068°C	1014.5 poise.
Specific heat	0.770 J/(g K)
Thermal Conductivity	1.38 W/(m K)
Thermal diffusivity	0.0075 cm2/s
Coefficient of thermal expansion* * (ppm / C)	5°C~35°C		0.52 x 10-6
	0°C~200°C		0.57 x 10-6
	-100°C~ +200°C		0.48 x 10-6
ASTM PROGRAMM  * C-598, * * E-228

Mechanical Properties:

All values are within 25 unless otherwise specified °C
Young's modulus of elasticity	73 GPa
Shear modulus	31 GPa
Modulus of rupture/ wear	52.4 MPa
Bulk modulus of elasticity	35.9GPa
Poisson's ratio	0.16
Density	2.20 g/cm3
Knoop Hardness (100g load)	522 kg/mm2
Tensile strength	54 MPa
Compressive strength	1.14 GPa

Optical Properties:

6
 

Take FS200 Oh < 200ppm as an example
Measuring Accuracy:±1x10-6
Wavelength (nm)	Refractive index n (25°C)	Refractive index n (20°C)	Refractive index n (20°C,dn/dt)
365.015 ni	1.474710	1.474655	11.3
404.656 nh	1.469786	1.469731	11.0
435.835 ng	1.466860	1.466807	10.7
486.133 nF	1.463293	1.463240	10.5
546.075 ne	1.460245	1.460194	10.2
587.562 nd	1.458631	1.458580	10.3
656.273 nC	1.456535	1.456484	10.1

Main Applying Fields:

Applying Fields:	1).High temperature lamp envelopes 2).Temperature insensitive optical component supports 3).Lenses, mirrors in highly variable temperature regimes 4).Microwave and millimeter wave components 5).Aeronautical radar windows
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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.