Color Addition with Slide Projectors

Optics > Color > Synthesis and Analysis

DCS# 6F10.10

COLOR ADDITION WITH SLIDE PROJECTORS

DESCRIPTION

Project overlapping red, green, and blue beams of light on the screen to show additive color mixing.
NOTES: Use lamp settings to adjust intensities of beams.

Filters are Rosco #27 (medium red), #74 (night blue), and #4490 (calcolor 90 green). Transmission curves can be found online:
http://www.rosco-ca.com/products/filters/filters-roscolux.html#Color; These are java applets showing color addition and subtraction:
http://www.oberlin.edu/faculty/brichard/Apples/ColorMixingPage.html,