Nuclear-Fusion.org

“Our world cannot and will not become a permanently better place until free unlimited energy is available to all.” This site is dedicated to my notion that a disequilibrium of energy wealth distributed unfairly and capriciously can only be fixed by the statement above. Be part of the problem or part of the solution. Therefore with full transparency I have created a forum for ideas from thoughtful people who want to contribute to making our world a better place permanantly.

Showing posts with label Negative. Show all posts

Friday, November 26, 2010

BK7 Negative Meniscus Spherical Lenses

GoldDragonOptics
P.O Box2024(guilin road),ChangChun,Jilin P.R.China
ChangChun
130021
China

Tel: +86-431-85353336
Fax: +86-431-85353338

Material:BK7

Design Wavelength :632.8nm
Focal Length Tolerance :±1%
Diameter Tolerance :+0.0/-0.1mm
Thickness Tolerance :±0.1mm
Surface Accuracy :?/4@632.8nm
Surface Quality :40-20
Centration :<3' Clear Aperture :>90%
Bevelling :<0.2×45°
Coating :AR A:350-650nm B:650-1050nm C:1050-1580nm

View the original article here