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To: Annie Fu

YBT custom laser protective BK7 optical windows lens

Product description
Specification
Optical Specification
Dimension Tolerance
+0/-0.1mm
Thickness Tolerance
±0.1mm
Surface Accuracy
λ/4
Surface Quality
40-20
Parallelism
<1 arc min
Clear Aperture
>90%
Bevelling
<0.2×45°
Coating
Customers Design
Product Description

Quartz glass characteristics

Mechanical Property
Reference Value

Mechanical Property
Reference Value
Density
2.2g/cm3

Deformation Point
1280℃
Compressive Strength
1100Mpa

Softening Point
1780℃
Bending Strength
67Mpa

Annealing Point
1250℃
Tensile Strength
48Mpa

Specific Heat(20~350℃)
670J/kg.℃
Poisson's Ratio
0.14~0.17

Thermal Conductivity(20℃)
1.4W/m.℃
Elastic Modulus
72000Mpa

Refractive Index
1.4585
Shearing Modulus
31000Mpa

Coefficient of thermal expansion
5.5×10-7cm/cm.℃
Mohs Hardness
5.5~6.5

Hot work temperature
1750~2050℃



The temperature for a short time
1300℃



The temperature for a long time
1100℃

JGS1( Extreme UV optical quartz glass)It is a high-purity optical quartz glass made by oxyhydrogen flame melting. Its satisfactory UV light transmission performance surpass all the other glass types in particular in the shortwave UV zone and can achieve a 90% transmission rate at the wavelength of 185nm. Hence it is an ideal choice for applications in the wavelength range of 185-2500nm.


JGS2 (UV optical quartz glass)It is an optical quartz glass made by oxyhydrogen flame melting and is suggested for applications in the wavelength range of 220-2500nm.


JGS3 (Infrared quartz glass)
It has a good performance of infrared light transmission with a transmittance of over 85%. It is recommended for applications in the wavelength range of 260-3500nm.

Installation Process
Applications
Certifications
Company Information
FAQ

Q:What's the procedure of buying Windows ?

A .Enquiry-off&fill out the proforma order chart-confirm-payment-produce-delivery-confirm delivery&feedback-service support.

B.Lead time=produce time+delivery time

C.General produce time:7-20 days.

D.Delivery time:3-9 days(DHL,Fedex,UPS,TNT).10-30 days for EMS.

E.Payment:USD to TT, Moneygram, Western Union, Bank transfer, secured payment.

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