DICHROIC FILTER SPECIFICATION FOR COLOR ADDITIVE DISPLAYS: I. PRELIMINARY TOLERANCE DETERMINATION AND THE C.I.E. DESIGNATIONS FOR CODING COLORS
Abstract
Twelve pairs of dichroic filters were used in a xenon-source additive color projector to determine their effects upon observer use of the seven color codes customarily employed in Command-and-Control visual displays. The particular filters used were selected on the basis of previously published research. The resultant primary color codes and white were described in CIE terms for more ready comparison with color discrimination literature. Results indicated that the blue filter should reflect energies well into the green region of the spectrum for adequate seven-color production. No over-all differences were found among the red dichroics, although red filters interacted significantly with coding colors. It was concluded that the relative efficiencies of the seven color codes may be tailored to anticipated or present operational need by the utilization of narrow filter tolerance. Broader tolerances around 516 nanometers for the blue filter cutoff and 585-590 nanometers for the red cutoff should result in an adequate set of seven coding colors. A comparison of several studies completed over the past two years seemed to suggest that over-all display brightness may have almost as significant effect on observer performance as the selection of filters. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1966
- Accession Number
- AD0488479
Entities
People
- Edward F. Rizy
Organizations
- Rome Laboratory