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Optical Systems

High-efficiency-polarized-light-source

Segmented hologram for multi-image display

As a consequence of the above, it is an object of the present invention to provide a holographic ...

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Seam structure of rubber sheets

OF THE PREFERRED EMBODIMENT Referring to FIG. 3 of the drawings, a seam structure 30 of connecting ...

Holographic method and apparatus using incoherent light

This object is achieved by the invention by means of a method of generating a quasi-complex ...

Method and apparatus for obtaining modulated light indicative of an image operationally formed by projecting an inputted image on the flat plate of an optical induction reflective index crystal

An object of the present invention is to provide an optical logic operation apparatus which is easy ...

Method for making a holographic mirror

Accordingly, an object of the invention is to develop a simplified and improved process for making ...

Two-step gated holographic recording in photorefractive materials using cw lasers

What is claimed: 1. A method of writing to a holographic recording medium containing a ...

Masking of elongate three dimensional objects for the exposure of preselected areas for surface treatment

What is claimed is: 1. A masking member for masking at least an end portion of elongate pins, said ...

Method of preparing a photo-mask for imaging three-dimensional objects

The present invention is directed to a method of preparing a photo-mask for exposing selected areas ...

Heat-bonding method

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended ...

High-efficiency polarized light source

Details

Inventors: Loucks, Bryan E.;
Assignee: Greyhawk Systems, Inc. (Milpitas, CA)
Primary Examiner: Arnold; Bruce Y.
Assistant Examiner: Lerner; Martin
Attorney, Agent or Firm: Flehr, Hohbach, Test, Albritton & Herbert

An optical system is disclosed which combines a collimating lens with a half wave plate, a polarizing beam splitter, and imaging optics to create a polarized image of a non-polarized light source. This optical system has significant benefits of energy efficiency and brightness.

DETAILED DESCRIPTION The attainment of these and related objectives may be achieved through the use of the optical polarization system herein described.
This invention has a source of unpolarized light, a polarizing means for separating the non-polarized light into two beams with perpendicular polarizations, a projecting means for relaying the light to the polarizer, a retarding means for rotating the axis of polarization of one of the beams by 90 degrees, and light collection and focusing means for focusing the polarized light of both beams to create a polarized image of the source.

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