Viewing head
AssigneeThe Singer Company
InventorDavid Paul Gdovin
Life of this patent
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Abstract
The invention of this disclosure is a viewing head that packages a spherical mirror, beamsplitter, and cathode ray tube (CRT) in an enclosed container. The process of assembling the viewing head will automatically maintain the spherical mirror, beamsplitter, and CRT in optical alignment, making a time-consuming alignment procedure unnecessary. Because the optical equipment is contained within an enclosed container, the optical equipment will not have to be cleaned as often.
Claims10
An improved display system and viewing head of the type which has a spherical mirror of radius r, a beamsplitter positioned between an observer and the center of said spherical mirror at approximately a 45.degree. angle and an image projecting device located at a distance r/2 above said beamsplitter contained in a machined housing wherein the improvement comprises:
- a premachined base to accept a portion of said spherical mirror and said beamsplitter;
- means for mounting said spherical mirror to a predetermined location on said base;
- means for fastening said beamsplitter to a predetermined location on said base so that said beamsplitter will be positioned at approximately a 45.degree. angle from the center of said spherical mirror;
- a first premachined side panel which is connected to said base;
- a second premachined side panel which is connected to said base;
- means for connecting the side edges of said spherical mirror to said first and second side panels;
- means for holding at predetermined locations the edges of said beamsplitter against said first and second panels;
- a premachined top panel having a hole, said top panel being able to accept a portion of said spherical mirror and said beamsplitter while being connected to said first and second side panels;
- means for attaching at predetermined locations said spherical mirror and said beamsplitter to said top panel and means for placing the screen of said device through said hole so that said device will be a distance of r/2 above said beamsplitter, whereby said beamsplitter, said spherical mirror and said image projecting device will be in optical alignment upon the assembly of said system, and an observer positioned in front of said beamsplitter will believe that the image appearing on the screen of said image projecting device is realistic and is coming from infinity.
A display device which includes a spherical mirror, a beamsplitter and a cathode ray tube which comprises:
- a machined enclosure that contains means for connecting a beamsplitter to said enclosure;
- means for connecting a spherical mirror of radius r to said enclosure so that said beamsplitter will be at approximately a 45.degree. angle from th center of said spherical mirror and means for connecting a cathode ray tube to said enclosure at a distance of r/2 above said beamsplitter;
- whereby the connection of said beamsplitter, said spherical mirror and said cathode ray tube to said enclosure will result in said spherical mirror, said beamsplitter and said cathode ray tube being in optical alignment.
Dependencies are inferred from the claim text.