Title:
LAMP
Document Type and Number:
WIPO Patent Application WO/2018/228223
Kind Code:
A1
Abstract:
Disclosed is a lamp, comprising: a light source comprising a laser diode and a fluorescent sheet, with a laser emitted from the laser diode being focused on the fluorescent sheet and exciting the fluorescent sheet to emit fluorescent light; and a light-collimating element for receiving light emitted from the light source and emitting the light in a collimated way, wherein a field angle of an effective aperture of the light-collimating element relative to a light emission point of the light source is A, and A is no more than 60 degrees. The laser emitted from the laser diode is focused on the fluorescent sheet. Since the laser is coherent light emitted from a tiny light-emitting chip, a very small light emission spot can be formed, so that a highly collimated light beam can be formed according to optical theories. Moreover, according to the experimental conclusions discovered by the inventor, the field angle of the light-collimating element relative to the light emission point of the light source is controlled such that same is be less than 60 degrees, thereby further improving the degree of collimation of the collimated light beam. In this way, a highly collimated emergent light beam can be obtained, and same is not significantly diffused and enlarged in a few meters or even tens of meters. Such a light beam has many uses in decorative lighting.
Inventors:
YANG YI (CN)
Application Number:
PCT/CN2018/089596
Publication Date:
December 20, 2018
Filing Date:
June 01, 2018
Export Citation:
Assignee:
YANG YI (CN)
International Classes:
F21K9/20; F21V7/00; F21V13/14
Foreign References:
| CN107166180A | 2017-09-15 | |||
| CN103913937A | 2014-07-09 | |||
| CN106502036A | 2017-03-15 | |||
| CN106707669A | 2017-05-24 | |||
| CN105765460A | 2016-07-13 | |||
| CN105864647A | 2016-08-17 | |||
| CN105353581A | 2016-02-24 | |||
| US20160195244A1 | 2016-07-07 |
Download PDF: