page 70
Digital Projection INSIGHT 4K Dual LED & Quad Series
Reference Guide
APPENDIX E: GLOSSARY OF TERMS
Rev B June 2016
Lens extension
The distance between the front of the projector and the front of the mounted lens. When a long lens is intended to cover a relatively short
, lens extensions should be taken into account when calculating the
as the error margin for such calculations
should not exceed 5%.
Letterboxing
without
Lumen
A photometric unit of radiant power. For projectors, it is normally used to specify the total amount of emitted visible light.
Noise
Electrical interference displayed on the screen.
Overlapping region
See
Pillarboxing
.
Pixel
Short for
Picture Element
. The most basic unit of an image. Pixels are arranged in lines and columns. Each pixel corresponds to a micromirror
within the
; resolutions reflect the number of pixels per line by the number of lines. For example, a
lines, each consisting of 1920 pixels.
Pond of mirrors
Area around the periphery of the
containing inactive mirrors. The pond of mirrors may cause artifacts, for example during the
process.
Notes