Projection apparatus having improved projection properties, and method and procedure, respectively, for projecting an image
AssigneeOsram Gesellschaft Mit Beschraenkter Haftung
InventorsOliver Drumm, Henning Rehn, Bakuri Lanchava, Wolfgang Pabst, Robert Kraus
Life of this patent
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Abstract
In a method for projecting an image onto a projection area (10) by at least one first (110) and second (210) beam, in order to create an improved image on the projection area, the deviation of the projection of the first and second beam on the projection area is determined, and the intensity of the first and/or second beam is varied over time according to the previously determined deviations.
Claims31
-89. (canceled)
A method for projecting an image onto a projection screen by means of at least one first and one second beam,
- wherein by means of the superimposition of the projection of the first and of the second beam onto the projection screen a reference impression of the image is to be generated,
- wherein the at least first and second beams for projecting the pixels are directed onto the projection screen by means of a first mirror,
- wherein by means of an actual deviation of the projection of the first and of the second beam onto the projection screen an actual impression of the image is generated which deviates from the reference impression, wherein the method comprises the method steps
- A) determination of the actual deviation of the projection of the first from the second beam on the projection screen,
- B) temporal variation of the intensity of the first and/or second beam according to the deviations determined in method step A) to generate the reference impression.
A projection apparatus comprising
- at least one first and second source of radiation for generating a first and second beam,
- a projection device for projecting the first and second beams onto a projection screen, wherein an image is projected onto the projection screen,
- an electronic control for the first and second source of radiation,
- a detection device for detecting a deviation between the projections of the first and second beams on the projection screen,
- wherein the projection apparatus is arranged such that depending on the deviation between the projections of the first and second beams on the projection screen detected by means of the detection device the electronic control for the first and/or second source of radiation may be delayed such that the deviation is reduced and corrected, respectively,
- wherein the at least first and second sources of radiation comprise lasers, wherein the projection device comprises a first mirror for directing the at least first and second beams onto the projection screen.
Dependencies are inferred from the claim text.