Digital Projection
HIGHlite 730 & 740 Series
APPENDIX F: GLOSSARY OF TERMS
Reference Guide
154
Rev E March 2014
Brightness (optical)
Describes how ‘bright’ an image that is projected onto a screen appears to an observer.
C
See
Chrominance
.
Chrominance
Also known as ‘
C
’, this is the component, or pair of components, of an
S-Video
or
Component Video
signal which describes
color
difference
information.
Cold mirror
A mirror that preferentially reflects or transmits infra-red light. In a projector, a cold mirror is used to reflect the visible component of the lamp
beam into the illumination optics and transmit the unwanted infrared radiation into an absorber.
Color difference
In
S-Video
or
Component Video
signals, the difference between specified colors and the
luminance
component. Color difference is zero for
monochrome images.
Color gamut
The spectrum of color available to be displayed.
Color temperature
The position along the black body curve on the chromaticity diagram, normally quoted in Kelvin. It takes into account the preset values for
color balance in the service set-up to take up the variations in the prism. The projector allows you to adjust this temperature (i.e. adjust the
picture color temperature).
Notes
