infrared filter


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infrared filter

A filter that permits passage of only infrared waves of a certain wavelength.
See also: filter
References in periodicals archive ?
He modified Millikan's ear piece by improving the infrared filter and adding an inflatable balloon in order to make the earlobe bloodless for an initial zero calibration.
The effect of minimising the amount of visible light entering the lens when using an infrared filter means that focusing is best done manually and as an approximation, with the aperture stopped down to maximise depth of field.
XF], The 1/3" LTC 0495 and 1/2" LTC 0620 Digital CCD Day/Night Cameras include a mechanically switching infrared filter to ensure the highest image quality possible, even in poor lighting, guaranteeing around-the-clock surveillance.
The new 1/3-inch LTC 0495 and 1/2-inch LTC 0620 Digital CCD Day/Night Cameras include a mechanically switching infrared filter for better images in poor lighting.
To minimize heat transfer, a KL 1500 constant-color-temperature fiber-optic source with an infrared filter was used to illuminate the specimen.
The rugged, waterproof unit provides 90 minutes of illumination on a single charge and features a host of options, including an infrared filter for low-light video equipment and to boost night vision and an ultraviolet filter for marking, identification and forensic operations.
McMahon says he is developing an infrared filter that will automatically pick out Lyman-alpha light from even more-distant galaxies.
This DSLR caters to astronomers and hobbyists who enjoy capturing the beauty of the night sky by offering a modified infrared filter and a low-noise sensor with heightened hydrogen-alpha sensitivity.