Illumination – With polarizer
Patent
1984-12-18
1986-09-16
Wolfe, W. R.
Illumination
With polarizer
362328, 362373, F21V 914
Patent
active
046126040
ABSTRACT:
A uniform beam of polarized light for biostimulation purposes is provided by a projector having a lamp, and a reflector which create a diverging beam that refracts through a Fresnel lens and becomes a bundle of parallel beams, which strikes a multi-plate Brewster polarizer to be reflected and become a polarized light bundle of substantially parallel light beams of nearly uniform intensity and having a dimension of some hundreds of cm.sup.2. The projector may include a rectangular housing, a pair of rods hingedly connecting a frame around the polarizer and engaging the housing to position the polarizer, a halogen overhead projector lamp, a cooling fan and a six plate glass polarizer.
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patent: 3876285 (1975-04-01), Schwarzmuller
patent: 3912920 (1975-10-01), Kubota
patent: 4428031 (1984-01-01), Mori
Bildsystem AB
Wolfe W. R.
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