Abstract

A device which reduces eyestrain, caused by the many transverse and vertical movements of the eyes in the reading of spectrophotometric curves, is described. The spectrophotometric curve, the wave-length scale, and the reflectance scale are brought into controlled juxtaposition for reading. Means for magnifying the curve and related scales, setting the wave-length accurately and progressing quickly from point to point along the curve, are provided. The apparatus may be used with or without a wave-length correction and is applicable to either the selected or weighted ordinate method of reading. Its use is considerably less tiring than any other method tried and increases notably the speed of reading, particularly when there are several curves to a sheet.

© 1946 Optical Society of America

On the Basic Sensation Curves of the Three-Color Theory

Hl. de Vries
J. Opt. Soc. Am. 36(3) 121-127 (1946)

Spectrophotometric and Colorimetric Determination of the Colors of the TCCA Standard Color Cards

Genevieve Reimann, Deane B. Judd, and Harry J. Keegan
J. Opt. Soc. Am. 36(3) 128-159 (1946)

The Evaluation of Colorimetric Tristimulus Values by Means of a New Centroid Method*

Howard A. Robinson
J. Opt. Soc. Am. 36(5) 270-277 (1946)

Direct Determination of Wave-Lengths from Fabry-Perot Interferometer Patterns

George R. Harrison
J. Opt. Soc. Am. 36(11) 644-654 (1946)

Steady-State Load Curves for Semi-Conductor Bolometers

R. Clark Jones
J. Opt. Soc. Am. 36(8) 448-454 (1946)