Dynamic projection light with posts fixed structure
US10175569B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2017 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Nov 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B35/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dynamic projection light includes several projection units fixed in a housing and a controller used for sequentially turning on and turning off at least a part of the several projection units to produce at least one moving image. Each projection unit is used for projecting a preset image and includes an LED head, a magnifying lens configured in front of the LED head and configured for diffusing light from the LED head, an optical sheet configured in front of the magnifying lens and having a preset pattern, and a condenser lens configured in front of the optical sheet. By arranging different preset patterns of the optical sheets, utilizing the human visual persistence phenomenon, projected animation images of human or animal walking or running or jumping or swinging, or leaves or petals or snowflakes falling, or objects rolling et al. may be realized, having a strong appreciation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.