Optical: systems and elements – Lens – Panoramic
Reexamination Certificate
2008-07-22
2008-07-22
Mack, Ricky L (Department: 2873)
Optical: systems and elements
Lens
Panoramic
C359S726000, C359S728000
Reexamination Certificate
active
07403343
ABSTRACT:
The invention relates to a panoramic attachment optical system and a panoramic optical system for taking an image having a full 360°-direction angle of view or projecting an image at a full 360°-direction angle of view. These optical systems are reduced in size and flare light and improved in resolving power. A panoramic attachment optical system10attached to the entrance side of an image-formation lens20to form a full 360°-direction image on an image plane30comprises a transparent medium that is rotationally symmetric about a center axis1and includes at least one internal reflecting surface12and at least two refracting surfaces11and13. A light beam incident on the entrance surface11in order of travel of light enters the transparent medium via the entrance surface11, and is reflected at the internal reflecting surface12to leave the transparent medium via the exit surface13, forming an image at a position of the image plane30off the center axis1via the image-formation lens20. The internal reflecting surface and the refracting surfaces are each of shape rotationally symmetric about the center axis1, and a light beam2coming from far way forms an image at least one time in a section including the center axis1, but does not form any image in a plane that is orthogonal to that section and includes a center ray20of that light beam.
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Greece James R
Mack Ricky L
Olympus Corporation
Pillsbury Winthrop Shaw & Pittman LLP
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