Abstract
IT is often desired to combine light from two sources without generating multiple images in the mixing device. Image multiplication, which results from extra reflexions, occurs in methods already in use, such as a partly aluminized mirror, a sheet of plain glass used as a mirror, or a mixer cube (otherwise used as a beam-splitter). With the last, the apparent multiplication of the sources may not be as obtrusive as with the first two, but the mixer cube has other disadvantages, being less economical than the method described here, in which the components can serve other purposes when the device is no longer needed.
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References
Jenkins, F. A., and White, H. E., Fundamentals of Optics, third ed. (McGrawHill, 1957).
Brindley, G. S., Sci. Amer., 209, 85 (1963). Le Grand, Y., Les Yeux et la Vision (Dunod, 1960).
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RUDOLF, N. Optical Combination of Two Sources avoiding Multiple Images. Nature 202, 79–80 (1964). https://doi.org/10.1038/202079a0
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DOI: https://doi.org/10.1038/202079a0
