Elastically deformed reflectors

Details Elastically deformed reflectors Elastically deformed reflectors

1979-04-09

1981-01-06

Henry, Jon W.

29522R, 29449, G02B 718, G02B 510

Patent

active

042433010

ABSTRACT:
Spherically-shaped dish and cylindrically-shaped trough reflectors are produced by the deflection of a thin reflective element within its elastic range of stress. A spherical or cylindrical shape is produced by including a pure bending moment stress pattern in the reflective element. This is accomplished by clamping the edges of the reflective element to a rigid frame which is precisely dimensioned relative to the dimensions of the reflective element. Preferably, the surface of the frame which engages and supports the reflective element is tangent to the desired radius of curvature of the reflector. Close control of the dimensions insures that no compressive or tensile stresses are induced in the element by forces from the support surfaces, such forces tending to push the edges of the reflective element toward or away from each other.

REFERENCES:
patent: 622480 (1899-04-01), Ives
patent: 1698905 (1929-01-01), Beechlyn
patent: 4059346 (1977-11-01), Levine et al.
patent: 4135493 (1979-01-01), Kennedy
patent: 4139270 (1979-02-01), Dotson

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