Compact flir optical configuration
First Claim
1. A FLIR system having a refractive FLIR optical configuration which comprises:
- (a) a substantially spherical housing having a center and substantially circular cross-sections; and
(b) an optical window disposed in and extending to an outer surface of said housing, said window defining an optical aperture;
(c) the diameter of said optical aperture defined by the window exceeding the radius of a circular cross-section of said housing passing through said center of said housing.
8 Assignments
0 Petitions
Accused Products
Abstract
A FLIR system having a refractive FLIR optical configuration including a substantially spherical housing and an optical window disposed in and extending to the outer housing surface. The window aperture diameter exceeds the housing radius and is a near dome-shaped, relatively high dispersive negative lens forming a part of the FLIR optical system and is disposed adjacent a positive relatively low dispersive lens. A first optical system extends to a first housing window for receiving light and is within a hemispherical housing portion comprises an afocal lens system of a first pair of lenses, one lens disposed at a housing wall, a first mirror disposed within the hemisphere and reflecting light passing through the first pair of lenses, a second mirror for receiving the light reflected from the first mirror and reflecting the light along a path parallel to the light impinging upon the first mirror and a further plurality of lenses for transmission of the light reflected from the second mirror. The light reflected from the first mirror preferably is reflected in a direction normal to the light impinging upon the first mirror. A second window is disposed at the housing surface and a second optical system disposed within the housing is bounded by the hemisphere, receives light through the second window and is capable of selectively substituting the second optical system for a portion of the first optical system. Apparatus is provided to selectively substitute the second optical system for the first pair of lenses, the first mirror and the second mirror.
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Citations
36 Claims
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1. A FLIR system having a refractive FLIR optical configuration which comprises:
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(a) a substantially spherical housing having a center and substantially circular cross-sections; and (b) an optical window disposed in and extending to an outer surface of said housing, said window defining an optical aperture; (c) the diameter of said optical aperture defined by the window exceeding the radius of a circular cross-section of said housing passing through said center of said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A FLIR system having a refractive FLIR optical configuration which comprises:
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a substantially spherical housing having a center and substantially circular cross-sections; and a first optical system disposed within said housing and extending to a first window at said housing for receiving light through said first window; said first optical system being disposed in a volume within said housing bounded by said housing and a plane passing through said center of said housing; wherein said first optical system includes an afocal lens system which includes;
a first pair of lenses, one lens of said first pair of lenses disposed at a wall of said housing;
a first mirror disposed within said volume within said housing bounded by said housing and said plane passing through said center of said housing and reflecting light passing through said first pair of lenses and impinging thereon;
a second mirror for receiving said light reflected from said first mirror and reflecting said light along a path parallel to said light impinging upon said first mirror; and
a further plurality of lenses for transmission of said light reflected from said second mirror. - View Dependent Claims (10, 11, 12, 13)
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14. A FLIR system having a refractive FLIR optical configuration which comprises:
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a substantially spherical housing having a center and substantially circular cross-sections; and a first optical system disposed within said housing and extending to a first window at said housing for receiving light through said first window; said first optical system being disposed in a volume within said housing bounded by said housing and a plane passing through said center of said housing; wherein said housing is substantially in the shape of a truncated sphere; and wherein said first optical system includes an afocal lens system which includes;
a first pair of lenses, one lens of said first pair of lenses disposed at a wall of said housing;
a first mirror disposed within said volume within said housing bounded by said housing and said plane passing through said center of said housing and reflecting light passing through said first pair of lenses and impinging thereon;
a second mirror for receiving said light reflected from said first mirror and reflecting said light along a path parallel to said light impinging upon said first mirror; and
a further plurality of lenses for transmission of said light reflected from said second mirror. - View Dependent Claims (15, 16, 17)
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18. A FLIR system having a refractive FLIR optical configuration which comprises:
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a substantially spherical housing having a center and substantially circular cross-sections; and a first optical system disposed within said housing and extending to a first window at said housing for receiving light through said first window; said first optical system being disposed in a volume within said housing bounded by said housing and a plane passing through said center of said housing; and said first optical system including a second window disposed at the surface of said housing and a second optical system disposed in said volume within said housing bounded by said housing and a plane passing through said center of said housing receiving light through said second window, said system further including means to selectively substitute said second optical system for a portion of said first optical system.
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19. An apparatus, comprising:
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a substantially spherical housing having a substantially spherical exterior surface with a radius, and having a window portion which is substantially transparent to infrared radiation and which defines an optical aperture through which infrared radiation can enter said housing, said optical aperture having a diameter which is greater than said radius of said surface of said housing; and an optical system disposed within said housing and responsive to infrared radiation which enters said housing through said optical aperture. - View Dependent Claims (20, 21)
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22. An apparatus, comprising:
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a substantially spherical housing having a substantially spherical exterior surface with a centerpoint, said housing including a window portion which has thereon a portion of said exterior surface and which is substantially transparent to infrared radiation; a system which is operative to support said housing for pivotal movement about said centerpoint of said exterior surface; and an optical system disposed within said housing and responsive to infrared radiation which enters said housing through said optical aperture, said optical system moving with said housing when said housing moves about said centerpoint of said exterior surface. - View Dependent Claims (23, 24, 25)
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26. An apparatus, comprising:
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a substantially spherical housing having a substantially spherical exterior surface with a centerpoint, and having a window portion which is substantially transparent to infrared radiation and which defines at least one optical aperture through which infrared radiation can enter said housing; and an optical system disposed within said housing and responsive to infrared radiation which enters said housing through said window portion, said optical system being a FLIR optical system, and said FLIR optical system occupying a volume within said housing which is less than one-half of the volume of said housing. - View Dependent Claims (27, 28, 29)
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30. An apparatus, comprising:
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a substantially spherical housing having a substantially spherical exterior surface with a centerpoint, and having a window portion which is substantially transparent to infrared radiation and which defines at least one optical aperture through which infrared radiation can enter said housing; and an optical system disposed within said housing and responsive to infrared radiation which enters said housing through said window portion, said optical system having at least two different fields of view through said window portion, and said optical system occupying a volume within said housing which is less than one-half of the volume of said housing. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification