Domed segmented lens systems
First Claim
1. An optical assembly for providing a panoramic field of view about a central point in a focal region for sensing radiation, the assembly comprising:
- a spherical section having an outer spherical surface and an inner surface, the outer surface having a radius of curvature originating at the central point and the inner surface comprising a plurality of convex lenses, each lens having an optical axis passing through the focal region.
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Accused Products
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.
53 Citations
19 Claims
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1. An optical assembly for providing a panoramic field of view about a central point in a focal region for sensing radiation, the assembly comprising:
a spherical section having an outer spherical surface and an inner surface, the outer surface having a radius of curvature originating at the central point and the inner surface comprising a plurality of convex lenses, each lens having an optical axis passing through the focal region. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical assembly for providing a panoramic field of view about a central point in a focal region for sensing radiation, the assembly comprising:
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a plurality of circular lenses each having an optical axis, an inner surface and an outer surface, said lenses being arranged in a spherical matrix having a radius of curvature originating at the central point with each optical axis passing through the focal region; and
whereinthe outer surface of each circular lens is convex and has a radius of curvature originating in the focal region. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. An optical assembly for providing a panoramic field of view about a radiation sensor positioned in a focal region for sensing radiation, the assembly comprising:
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a first spherical surface having a radius of curvature originating at the radiation sensor; and a plurality of circular biconvex lenses each having an inner surface directed toward the radiation sensor and an outer surface directed away from the radiation sensor, said outer lens surfaces being evenly distributed along the first surface; and
whereinthe outer surface of each lens has the same radius of curvature as the first surface. - View Dependent Claims (16, 17)
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18. A segmented lens sysem for focusing incoming radiation from a panoramic field of view about a central point in a focal region comprising:
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a spherical section having an outer spherical surface and an inner surface, the outer spherical surface ahving a single radius of curvature about the central point; a plurality of convex lenses formed in the spherical section between the outer surface and the inner surface, each convex lens hving an optical axis passing through the focal region.
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19. A panoramic infrared detector comprising:
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an infrared detector element; a spherical section about the infared detector, the spherical section having an outer spherical surface and an inner surface, the outer spherical surface having a single radius of curvature about the infrared detector element; a plurality of convex lens formed in the spherical section between the outer spherical surface and the inner surface; and
whereinthe optical axis of each lens intersects the detector element.
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Specification