Domed segmented lens systems

Details Domed segmented lens systems Domed segmented lens systems

1988-08-02

1990-06-05

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250221, 250342, 340567, 350 11, G02B 2700, G08B 1318

Patent

active

049308645

ABSTRACT:
An improved optical assembly which provides a panoramic field of view for infrared motion detection. In one form of the invention the optical assembly comprises a spherical section having an inner surface and an outer spherical surface, the outer spherical surface having a radius of curvature centered in a focal region which is suitable for placement of an infrared detector. The inner surface of the spherical section comprises a plurality of circular convex lenses, each lens having an optical axis passing through the focal region. The combination of the outer spherical surface with each circular convex lens forms a biconvex lens having a focal point in the focal region. Radiation received by each biconvex lens from a zone in the field of view is focused in the focal region for sensing by the infrared detector.

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patent: 4523095 (1985-06-01), Keller-Steinbach
patent: 4606600 (1986-08-01), Schmidt
patent: 4717821 (1988-01-01), Messiou
patent: 4769545 (1988-09-01), Frader

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