Industry Patents
Patent: 9989837
Lighting Device and Projection Device
(Click image for PDF of full patent)
| Patent Number: |
9989837 |
| Title: |
Lighting Device and Projection Device |
| Abstract: |
A lighting device (100) and a projection device, comprising a light
source for generating a blue excitation light (110), a base board (130),
and a wavelength conversion material layer (140) covered on the base
board (130). The wavelength conversion material layer (140) absorbs a
part of the blue excitation light and emits an excited light. The color
coordinate of the excited light is within the pre-configured color area,
so that a mixed light combined by the excited light and the remaining
blue excitation light not absorbed by the wavelength conversion material
layer (140) exits the wavelength conversion material layer (140). The
color coordinate of the mixed light is closer to the pre-set blue light
color coordinate than the color coordinate of the blue excitation light.
|
| Country of Issue: |
US |
| First Named Inventor: |
Yang, Fu |
| Assignee: |
Appotronics |
| Continuation or Divisional of: |
|
| International Classification: |
G03B 21/20 |
| US Classification: |
G03B 21/204 |
| Issue Date: |
06-05-2018 |
| Filing Date: |
08-29-2012 |
| Application : |
14/235752 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
9989837 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
9989837 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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