Three-mirror panoramic camera

A mirror and correction lens technology, applied in the field of panoramic cameras with ultra-wide field of view, can solve problems such as high image compression that cannot be eliminated

Inactive Publication Date: 2011-09-07
REMOTEREALITY
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Both custom objective optics require high F-stops, require co...

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Embodiment Construction

[0040] It should be understood that the specific embodiments described and illustrated herein are examples of the invention and are not intended to limit the scope of the invention in any other way. Further, the technology of the present invention is suitable for application in teleconferencing, robot vision, unmanned vehicles or any other similar applications.

[0041] In some embodiments, a panoramic camera constructed in accordance with the principles of the present invention includes at least three sections. The first part includes the optical system. The second part comprises a digital image sensor mounted to the optical system in such a way that the sensor plane of the digital image sensor exactly coincides with the image plane of the optical system. The third part includes image processing software installed on a computer or embedded on a printed circuit board (PC board) included in the digital camera electronics.

[0042] The optical system includes at least two subs...

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Abstract

A system and method for obtaining images having an ultra- wide field of view angle. A panoramic camera includes two subsystems: an optical subsystem and an image sensor. The optical subsystem includes at least a three-aspheric mirrors for producing an image of objects in the ultra-wide field of view. The produced images are correctable by a standard optical element to produce on an image plane an image having an optical resolution approximately equal or exceeding the Nyquist sampling criterion for the image sensor. A first mirror provides a sharp, compressed, virtual image using a convex paraboloidal or hyperboloidal mirror. Second and third mirrors redirect light onto the correction element through a folded optical path. The standard optical element projects a virtual image onto the image sensor. Image processing software can be used to decompress and unwrap the ultra-wide angle image captured by the image sensor.

Description

[0001] Cross references to related patent applications [0002] This application claims priority to US Provisional Application No. 61 / 088,983, filed August 14, 2008, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to image detection. More specifically, the present invention relates to a panoramic camera suitable for an ultra-wide field of view. Background technique [0004] Many panoramic imaging cameras and optical systems using various refractive and reflective optical elements are known. For example, a fisheye lens that is strictly composed of refractive lenses. Fisheye lenses can cover a very wide field of view, up to 220 degrees. The disadvantages of fisheye lenses are well known. One of the disadvantages is non-uniform image illumination and resolution over a wide field of view. A purely refractive optical system (such as a fisheye lens) is usually called a refractive system. [0005] Ano...

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Application Information

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IPC IPC(8): G03B35/00
CPCG02B17/0824G02B13/06G03B37/04G03B37/02G03B35/00
Inventor 谢尔盖·特鲁布科文卡特·佩里
Owner REMOTEREALITY
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