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US 6,275,335 B1Granted
Single-lens 3D method, microscope, and video adapter
AssigneeSL3D, Inc.
InventorBryan Costales
Life of this patent
Estimating the term…
Abstract
A method and teaching for creating stereographic images with the use of a single lens is presented. A leading linear polarizing filter, a passive half-wave retarder, an electric switched quarter-wave retarder, and a trailing linear polarizing filter are then used in various combination to create: a 3D microscope, a 3D video adapter for microscopes, a general purpose 3D video lens, a 3D video adapter, and a 3D light-valve. A neutral density filter replaces those components to then create a 3D ocular and a 3D ocular adapter.
Claims12
A method for processing a light beam, comprising:
- (a) passing the light beam through a leading polarizing filter to form a filtered light beam such that at least most of the light in the filtered light beam has a common polarization orientation;
- (b) passing a first portion and not a second portion of the filtered light beam through a retarder to provide the first portion of the filtered light beam having a first polarization orientation and the second portion having a second polarization orientation different from the first polarization orientation, the retarder being positioned at least substantially at the aperture stop or a conjugate thereof;
- and
- (c) passing the first and second light portions through one or more analyzing filters, wherein the one or more analyzing filters is a polarizing beam splitter.
1 more element
Dependencies are inferred from the claim text.