Optical projection apparatus and assembling method thereof
OwnerTsung-Jung Hsu, Ching-Chao Cheninventors
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Abstract
An optical projection apparatus and assembling method thereof are disclosed. The method includes providing a precise calibration fixture, a projection lens, a display module and an optical engine. The projection lens and the optical engine and then the display module and the precise calibration fixture are assembled together. An image calibration operation is performed so that the position of the display module relative to the projection lens is adjusted through the precise calibration fixture. Thereafter, the display module and the optical engine are assembled using glue. The aforementioned apparatus and assembling method can improve the focusing characteristic of images and resolve image-tilting and image-shifting problems.
Claims15
A method of assembling an optical projection apparatus, comprising the steps of:
- providing a projection lens, a display module, a display screen and an optical engine;
- assembling the projection lens to the optical engine;
- adjusting the relative position between the display module and the projection lens to calibrate an image projected on the display screen from the projection lens;
- and
- assembling the display module to the optical engine after the image projected on the display screen is accurately calibrated.
A method of assembling an optical projection apparatus, comprising the steps of:
- providing a precise calibration fixture, a projection lens, a display module, a display screen and an optical engine;
- assembling the projection lens to the optical engine;
- fastening the display module on the precise calibration fixture;
- adjusting the relative position between the display module and the projection lens using the precise calibration fixture to calibrate an image projected on the display screen from the projection lens;
- and
- assembling the display module to the optical engine by glue after the image projected on the display screen is accurately calibrated.
An optical projection apparatus, comprising:
- a projection lens;
- a display module having a plurality of gluing holes and a plurality of device positioning holes;
- and
- an optical engine having a plurality of alignment pins that can pass through the gluing holes on the display module and fasten the display module to the optical engine by glue.
Dependencies are inferred from the claim text.