Optical: systems and elements – Absorption filter – Superimposed or series
Patent
1993-11-26
1995-09-26
Ben, Loha
Optical: systems and elements
Absorption filter
Superimposed or series
359889, 359589, 362293, G02B 522, G01J 100
Patent
active
054538831
ABSTRACT:
An apparatus for producing a substantially monochromatic light beam for chromotherapy and/or actinotherapy is disclosed ; the apparatus comprises a transportable housing including a light source, which housing includes a movable heterogeneous interference filter mounted on a support that is displaceable by means of a motor, said apparatus further including a wand enabling said light beam to be directed onto a zone to be treated, and said apparatus also including transmission means for conveying said light beam from said housing to said wand, said housing including an infrared filter interposed between said light source and said interference filter.
REFERENCES:
patent: 3457002 (1969-07-01), Magrath
patent: 4342516 (1982-08-01), Chamran et al.
patent: 4385344 (1983-05-01), Gonser
patent: 4396288 (1983-08-01), Helphrey
patent: 4860172 (1989-08-01), Schlager et al.
Ben Loha
Chang Audrey Y.
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