Posted on : 12/8/2005 Category | Medical, Pharma, Surgical & Healthcare Products | Subject | Diffraction grating | Description | changchun fortune optronics,inc could manufacture diffraction grating: a glass substrate carrying a layer of deposited aluminum that has been pressure-ruled with a large number of fine equidistant grooves, using a diamond edge as a tool. light falling on such a grating is dispersed into a series of spectra on both sides ofthe incident beam, the angular dispersion being inversely proportional to the line spacing. by propershaping of the diamond edge, however, the grooves can be formed in such a way as to concentrate most of the energy into a single spectral order; such a grating is said to be blazed. cast replica gratings can be made in plastic or another substrate, the replica being used either as a transmitting grating or by aluminizing it, as a reflecting grating. plane gratings require external optics to focus the spectral lines, but a grating ruled on a concave surface is self-focusing
| Company | CHANGCHUN FORTUNE OPTRONICS,INC, ROOM208 BUILDING 31THE FIFTH DIVISIONAL AREA OF ET, DELHI - 130033, CHINA Phone 864314666276 Fax 864314666276 Website http://www.fortuneoptical.com | |
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