HOYA HEAT ABSORBING FILTERS from Bes Optics, Inc. - Hoya heat absorbing filters absorb thermal radiations emitted from a light source, and are highly effective when used for slide projectors and a variety of illumination equipment.


	Hoya Heat Absorbing Filters


	Hoya heat absorbing filters are slightly bluish, feature high transmittance in the visible region, and good absorption of infrared rays. These filters absorb thermal radiations emitted from a light source, and are highly effective when employed for slide projectors and a variety of illumination equipment.

Glass type	Transmittance at 750 nm	Use	Catalog thickness
HA-15	15%	Absorbing heat radiation	3.0 mm
HA-30	30%	Absorbing heat radiation	3.0 mm
HA-50	50%	Absorbing heat radiation	3.0 mm


	Below are approximate spectral curves for the above filters


	For more information or prices on Hoya color filters please contact us.


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