HOYA ULTRAVIOLET FILTERS from Bes Optics, Inc. - Hoya ultraviolet filters are used for a wide range of applications that include analytical instruments and illumination equipment.


		Hoya Ultraviolet Filters

Ultraviolet Transmitting Filters

Hoya UV transmitting filters absorb shorter wavelengths below a certain value while transmitting longer wavelengths. They are used for a wide range of applications that include analytical instruments and illumination equipment.

Glass Type	Transition Wavelength	Use	Catalog Thickness
UV-22	220 nm	Ultraviolet equipment	2.5 mm
UV-28	280 nm	Ultraviolet equipment	2.5 mm
UV-30	300 nm	Ultraviolet equipment	2.5 mm
UV-32	320 nm	Ultraviolet equipment	2.5 mm
UV-34	340 nm	Ultraviolet equipment	2.5 mm
UV-36	360 nm	Ultraviolet equipment	2.5 mm


	Below are approximate spectral curves for the above filters.

Ultraviolet Transmitting Visible Absorbing Filters

Hoya ultraviolet transmitting visible absorbing filters are nearly black in color and transmit the ultraviolet region but absorb the visible. They also transmit slightly in the near infrared region. The glass type figure represents the wavelength that provides the maximum transmittance. These filters are chiefly used for single extraction of ultraviolet rays, and are often utilized for selectively transmitting the 253.7 nm and 365 nm wavelengths, which are the representative line spectra of mercury lamps.

Glass type	Highest transmittance wavelength	Use	Catalog thickness
U-330	330 nm	Ultraviolet equipment	2.5 mm
U-340	340 nm	Ultraviolet equipment	2.5 mm
U-350	350 nm	Ultraviolet equipment	2.5 mm
U-360	360 nm	Ultraviolet equipment	2.5 mm


	Below are approximate spectral curves for the above filters.


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


	Return to Hoya Color Filters.


	Return to Color Filters Main page.


	Please sign our guestbook.

We accept the following credit cards:

[Home] [Products] [About Us]

[Facilities] [Resources] [Contact Us]

This site looks best if viewed using: