Spectralite , optical elements , optical filtering movie-- product explain that spectralite is
coloured spectralite and colourless spectralite two major kinds mark. Coloured spectralite is
phosphate glass , silicate glass mark. Colored selectivity absorbs the neuter (dead colour)
glass ion adopt the selenium cadmium tinting , the ion to put colour glass.

-- product characteristic silicate glass the effect function comparison stabilizes but phosphate glass acts on to damp atmosphere to damp atmosphere the function stability is then relatively poor , use different occasion according to the consumer, but give a vacuum plating with a film handling (a sort using condition Bu Xu  to plate with film treatment).

--, product application applies to countrywide every universities and colleges , scientific research exploitation and supporting spying , clinical instrument , finance in war industry , public security punishment and so on broadly.