Patent ID: 11906893
Assignee: SONY GROUP CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  F | IPC G

Claim 7:
8. An optical system, comprising:
a fluorescent unit including a phosphor region excited by a first color light beam to output fluorescent light including at least one color light beam, the fluorescent unit outputting the first color light beam in a first period and outputting the fluorescent light in a second period;
one or two light valves illuminated by at least one of the first color light beam or the fluorescent light; and
a region division element including a first region and a second region and being disposed on an optical path between the fluorescent unit and the one or two light valves, the first region having a property of outputting the first color light beam and the fluorescent light from the fluorescent unit to be able to reach the one or two light valves, the second region having a property of outputting the fluorescent light from the fluorescent unit to be able to reach the one or two light valves, wherein
the fluorescent unit further includes a reflective diffuser region that reflects and outputs the first color light beam in the first period in a state of holding a polarization direction, and
the phosphor region reflects and outputs the fluorescent light in the second period.