The front surfaces of ground glass diffusers are frosted glass by abrasive sands and the other surfaces are polished. Roughness and transmittance become finer and larger as the grid size increases.
Opal glass diffusers are made of milk-white glass, which are mixed light scattering substance.
SIGMA KOKI CO.,LTD. Tokyo Head office
5F, SIGMA KOKI Tokyo Head office 1-19-9, Midori, Sumida-ku, Tokyo, 130-0021, JAPAN
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