Light modulation module having temperature adjustment module and reflective projection device having the same
US12332515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light modulation module, including a liquid crystal on silicon (LCoS) display panel and a temperature adjustment module, is provided. The LCoS display panel is disposed on a transmission path of an illumination beam and is configured to modulate the illumination beam. The LCoS display panel is disposed in the temperature adjustment module, which includes a temperature sensing element and a temperature control element. The temperature sensing element is disposed next to the LCoS display panel and is configured to sense an ambient temperature of the LCoS display panel. The temperature control element is disposed next to the LCoS display panel and is coupled to the temperature sensing element. The temperature control element controls a temperature of the LCoS display panel according to the ambient temperature. A reflective projection device is also provided, which is applied with the light modulation module and has good reliability and good projection quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.