Changchun Hengyi Optics Co., Ltd

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Crystals from Changchun Hengyi Optics

Post Date:

2008-07-21 13:33:14.0

Expiry Date:

2008-08-04 13:33:14

Date Joined:	2008-06-30 09:28:22.0
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Detailed Product Wanted Description

Changchun Hengyi Optics Co., Ltd can produce all kinds of optical components with optical crystal materials ( such as calcium fluoride, magnesium fluoride, silicon wafer,quartz wafer, fused silica windows,BaF2,Ge wafer,etc).

Calcium Fluoride
Greater than 90% Transmission from 250nm-700 nm
Low Index of Refraction

Calcium Fluoride optics are typically used in spectroscopic windows and lenses due to its high transmission from 250nm to 700 nm. Calcium Fluoride is also commonly found in cryogenically cooled thermal imaging systems. Its low absorption and high damage threshold makes it a popular choice for excimer laser optics. Calcium Fluoride's low refractive index allows it to be used without an antireflective coating. The Knoop hardness of Calcium Fluoride is 158.3. 
Calcium Fluoride window
Material:  CaF2 (UV Grade, Standard Optical Quality)
Clear Aperture:  90% of Diameter
Surface Quality:  20-10
Surface Accuracy:  <1 wave at 630 nm
Diameter Tolerance:  +0.10/-0.10m
Parallelism:  <20 arc second
Bevel:  0.10-0.90mm x 45 degree
Coating: specified by customers

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