公开(公告)号：US11886104B2

公开(公告)日：2024-01-30

申请号：US17585675

申请日：2022-01-27

Applicant: Qisda Corporation

Inventor： Peng Lee ,  Tsung-Hsun Wu ,  Ching-Tze Huang ,  Jia-Ming Zhang

IPC: G03B33/08 ,  G03B21/20 ,  G02B26/00

CPC classification number: G03B33/08 ,  G02B26/008 ,  G03B21/204

Abstract: A light source system includes a first light emitter configured to emit a first light with a first color band in a first time interval of a time period, a second light emitter configured to emit a second light with a second color band in a second time interval of the time period rather than in the rest of the time period other than the second time interval, and a light guide disposed downstream from the first light emitter and the second light emitter. The first time interval and the second time interval overlap in an overlapping time interval. The first light emitter and the second light emitter synchronously emit the first light and the second light in the overlapping time interval to form a combined light beam in the light guide. The light with the second color band is dominant of the combined light beam.

公开(公告)号：US11774840B2

公开(公告)日：2023-10-03

申请号：US17730110

申请日：2022-04-26

Applicant: Qisda Corporation

Inventor： Peng Lee

IPC: G03B21/20 ,  G02B27/28

CPC classification number: G03B21/2066 ,  G02B27/283 ,  G03B21/208 ,  G03B21/2073

Abstract: A light source module includes phase retardation layer, first light source, second light source, first Polarization Beam Splitter (PBS) layer, second PBS layer, first redirector and second redirector. The phase retardation layer, the first light source, the second light source, the first PBS layer, the second PBS layer, the first redirector and the second redirector are symmetrically disposed relative to symmetry axis. The first light source and the second light source each emit polarized light having first linear polarization direction and polarized light having second linear polarization direction. The phase retardation layer converts the first linear polarization direction of polarized light into the second linear polarization direction. The PBS layers allow polarized light having the first linear polarization direction to travel through but reflect polarized light having the second linear polarization direction. The redirector reflects polarized light having the second linear polarization direction.