Patent ID: 11914276
Assignee: CORETRONIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The optical engine module according to claim 1, wherein:
the first prism has a first surface, a second surface, and a third surface, wherein the illumination light beam enters the first prism from the first surface, is sequentially reflected by the second surface and the third surface, and exits the first prism from the second surface;
the second prism has a fourth surface, a fifth surface, and a sixth surface, wherein the illumination light beam from the first prism enters the second prism from the sixth surface, then exits the second prism from the fourth surface and is transmitted to the reflection surface of the light valve to form the image beam, wherein the image beam enters the second prism from the fourth surface, is reflected by the sixth surface, and exits the second prism from the fifth surface; and
the light-shielding element is located between the second surface and the sixth surface, and is located outside a transmission path of a center light of the illumination light beam.