Specifications

MIL-STD-1472E
5.10.4.5 Coding. For television viewing, symbol-or pattern-coding should be used in
preference to color-coding.
5.10.4.6 Lettering. Letters, numbers, and important details that must be viewed by television
shall be light against a dark background. Glazed or reflecting surfaces shall be avoided.
5.10.4.7 Stereo viewing. The two images produced by a stereosmpic periscope shall not differ
more than 2% in magnification or 0.50 prism d.iopterin vertical imbalance. Horizontal imbalance shall
be not greater than 0.50 prism diopter so as not to be fatiguing. Light transmittance of the two optical
paths should be within 10% of each other.
5.10.5 Illumination.
5.10.5.1 Reflected li~ht, Unless otherwise specified by the procuring activity, reflected light
from remote work areas, as measured at the operator’s work station (in direct viewing), shall conform
to the requirements of this standard.
5.10.5.2 Threshold viewing. Monochromatic lighting should be provided when viewing
conditions are near threshold, when high magnification powers are rquiti or when the operator is
required to view the work
at high angles of incidence through refractive materials.
,;.;