Appendix C: glossary of terms
Digital Projection Ltd. E-Vision Laser 13000 WU Series
T
Test pattern
A still image specially prepared for testing a projection system. It may contain various combinations of colors, lines and geometric shapes.
TheaterScope
An aspect ratio used in conjunction with a special anamorphic lens to display 2.35:1 images packed into a 16:9 frame.
Throw distance
The distance between the screen and the projector.
Throw ratio
The ratio of the throw distance to the screen width.
TRC (Throw ratio correction)
A special number used in calculating throw distances and throw ratios when the image does not fill the width of the DMD™. TRC is the ratio of the DMD™
aspect ratio to the image source aspect ratio: TRC = DMD™ aspect ratio / Source aspect ratio TRC is only used in calculations if it is greater than 1.
U
UXGA
A display resolution of 1600 x 1200 pixels with a 4:3 screen aspect ratio. (Stands for Ultra Extended Graphics Array.)
V
Vertical Scan Rate
The rate at which the frames of the incoming signal are refreshed. The rate is set by the vertical synchronization from the source and measured in Hertz.
Vignetting
Optical cropping of the image caused by the components in the projection lens. This can happen if too much offset is applied when positioning the image
using the lens mount.
Vista
An aspect ratio of 1.66:1.
W
WUXGA
A display resolution of 1920 x 1200 pixels with a 16:10 screen aspect ratio. (Stands for Widescreen Ultra Extended Graphics Array.)
Reference Guide
Rev A June 2019
page 123
Notes
