2 patents
Utility
Light-emitting Diode-type Illumination Device
8 Jul 20
Provided is a light-emitting diode-type illumination device with which it is possible to irradiate a broad area with light irradiated from an LED light source.
Hidetoshi Mitsuzuka, Yujiro Kojima, Kenichi Kurihara, Kazunori Kojima
Filed: 25 Sep 17
Utility
Light-emitting Diode-type Illumination Device
6 May 20
Provided is a light-emitting diode-type illumination device which controls, at a high illuminance, the illuminance of directed light emitted by an LED element as a light source.
Hidetoshi Mitsuzuka, Yujiro Kojima, Kenichi Kurihara, Kazunori Kojima, Koji Ishii
Filed: 25 Sep 17
- Prev
- 1
- Next
Patents are sorted by USPTO publication date, most recent first