Projector, projector system and image correcting method
A projector and projection technology, applied in the field of projectors, can solve problems such as distortion of projected images, and achieve the effect of reducing distortion of projected images
Active Publication Date: 2014-08-06
NEC CORP
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Problems solved by technology
[0010] The object of the present invention is to provide a projector, a projector system and an image correction method that can solve the problem of projected image distortion caused by the deviation of the incident position of projected light at the screen boundary
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Embodiment Construction
[0041] Embodiments of the present invention will be described next with reference to the drawings. In the following description, similar functional structures are denoted by similar reference numerals, and their repeated description may be omitted.
[0042] figure 1 is a schematic diagram showing the multi-projector system according to the first embodiment of the present invention. exist figure 1 , a multi-projector system has projectors 1 to 9 and a screen 100 . although figure 1 Nine projectors are shown, but the number of projectors is not limited to nine, and may be two or more. The screen 100 can be positioned independently of the multi-projector system.
[0043] The projectors 1 to 9 are rear projectors that emit light toward the back of the screen 100 to project an image from the screen 100 . The projection areas of projectors 1 to 9 are as follows figure 2 The array shown is arranged and displayed. Accordingly, the projected images of the projectors 1 to 9 are...
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The present invention proposes a projector that can solve the problem of interference to the projected image due to the deviation of the incident position of the projection light relative to the screen. The projection section (11) includes an LD light emitting section (111) and a scanning section (112) that scans the light emitted by the LD light emitting section (111) and projects the scanned light to the back side of the screen. The control section (12) controls the light emission amount of light and the scanning angle of the scanning section (112) based on the image signal so that the projection section (11) projects an image corresponding to the image signal to the screen. The control section (12) corrects the orientation of the projection light corresponding to each pixel of the image projected from the projection section (11) based on the refractive index of the light transmitting member and the scanning angle of the scanning section (112) so as to correct the projection The position of light incident on the screen is corrected.
Description
technical field [0001] The invention relates to a projector, a projector system and an image correction method. Background technique [0002] Multi-projector systems are known having multiple projectors arranged in an array and projecting a large composite image onto a screen. Since such a multi-projector system displays a large image, the system requires a screen that is large to some extent. Therefore, a support member supporting the screen may be located at the back of the screen to prevent the screen from loosening. [0003] If the aforementioned multi-projector system uses a rear projector that projects light onto the back of the screen, the support member should be located at the boundary of the projector's projection area to prevent the support member from blocking light and casting shadows on the projected image. However, if the supporting member is located at the boundary of the projection area of the projector, the boundary of the projected image of the project...
Claims
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IPC IPC(8): G03B21/00G03B21/14H04N5/74G02B27/18G03B21/62G03B21/64
CPCH04N9/3194H04N9/3185H04N9/3147G03B17/54H04N9/3129G03B21/56G03B21/14G03B21/00
Inventor 柳田美穗奥村藤男
Owner NEC CORP