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Bak1

BaK1 is very similar in transmission to BK7, but has somewhat better response in the near ultraviolet. Alkali and phosphate resistance is superior to BK7.






Index of Refraction (@ 587.6 nm): 1.57250
Abb¨¦ Factor (vd): 57.55
Density (gm/cm3): 3.19
-30¡ã to +70¡ã (per ¡ãC): 7.6 ¡Á 10-6
+20¡ã to +300¡ã (per ¡ãC): 8.6 ¡Á 10-6
Transformation Temperature (¡ãC): 592
Young's Modulus (dynes/mm2): 7.30 ¡Á 109
Climate Resistance: 2
Stain Resistance: 1
Acid Resistance: 3.3
Alkali Resistance: 1.2
Phosphate Resistance: 2.0
Knoop Hardness: 530
Poisson's Ratio: 0.252


Changchun Hengrun Optoelectronics Tech. Co., Ltd. 
 

IR Optics is a precision optics manufacturer offering short lead times,
Excellent products, and competitive prices.
Address£ºBuilding B15, North Lake Science and Technology Park,
Changchun city, China 130000
Email: sales@ir-optic.com
Internet:www.ir-optic.com
Tel: ++86- 431-88601057¡¢++86- 431-88601067 Fax:++86-431-88601082

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2006 contact IR Optics for quality optics including beam splitters, filters,
Prismss, windows, mirrors, cylindrical Lenses, Lenses, aspheric Lenses, achromatic Lenses, retardation plates, gratings.