Strobe reflector assembly
AssigneePolaroid Corporation
InventorIgor Blinow
Life of this patent
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Abstract
A strobe lighting unit--and a reflector assembly forming part thereof--include a concave reflector having a predetermined shape, typically including a parabolic cross-section. The reflector is formed in situ as part of an assembly process by pressing a thin precut planar blank of reflective material, preferably an aluminum alloy foil having selected mechanical properties, into a die cavity in the reflector housing with a conforming die plunger to bend the blank into the predetermined shape. During the bending process residual tension forces are induced intentionally into the blank and these forces urge the foil into contact with surfaces defining the die cavity to supportively maintain the reflector in the predetermined shape.
Claims5
A strobe lighting unit including a reflector having a generally concave predetermined shape, said lighting unit comprising:
- a housing having an open ended cavity therein defined by surfaces which when engagingly contacted by reflective material support said material to form a reflector having said predetermined shape;
- a thin, substantially planar blank of bendable light reflective material having an initial shape that is formed into said predetermined shape in response to pressing said blank into said cavity with a conforming die plunger and having residual tension forces induced therein, as a result of such formation, that urge said material into contact with said cavity surfaces to form said reflector when said shaped blank is retained in said cavity;
- means, on said blank and housing, for temporarily holding said shaped blank in said cavity while the die plunger is withdrawn to prevent displacement of said shaped blank from said cavity;
- means for retaining said shaped blank in said cavity, said retaining means including a cover plate member being attachable to said housing for covering said open end of said cavity;
- a light emitting strobe tube configured to be located at a predetermined position relative to said formed reflector;
- and
- means for locating said strobe tube at its said predetermined position and retaining it thereat.
Dependencies are inferred from the claim text.