Title:
DISPLAY METHOD
Document Type and Number:
Japanese Patent JP2022145614
Kind Code:
A
Abstract:
To provide an optical engine module and a projection device.SOLUTION: An optical engine module includes a light source unit, a first diffusion element, a polarizing beam splitting element, a second diffusion element, and a light valve. The light source unit emits a light beam. The first diffusion element is located on a transmission path of the light beam. The polarizing beam splitting element is located on the transmission path of the light beam. The first diffusion element is located between the polarizing beam splitting element and the light source unit. The second diffusion element has at least one optical surface to reflect and diffuse the light beam. The light beam forms an illumination beam after passing through the second diffusion element, and the illumination beam has an optical image matching angle. The light valve is located on the transmission path of the illumination beam. The light valve converts the illumination beam to an image beam. While the present invention maintains the optical image matching angle of the illumination beam, the present invention can reduce a divergence angle of a plurality of sub-beams of the beam before entering the polarizing beam splitting element.SELECTED DRAWING: Figure 1A
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Inventors:
LO YI CHIEN
Application Number:
JP2022039328A
Publication Date:
October 04, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
CTX OPTO ELECTRONICS CORP
International Classes:
G02B27/02; G02B27/18
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Osamu Miyazaki
Tadahiko Ito
Osamu Miyazaki