Plant sensor having a controller controlling light emission of first and second light emitters at timings different from each other
US8822904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M7/0089
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plant sensor includes a first light emitter to emit first measuring light with a first wavelength to irradiate a growing condition measurement target therewith; a second light emitter to emit second measuring light with a second wavelength to irradiate the growing condition measurement target therewith; a light receiver to receive reflected light of each of the first and second measuring light from the growing condition measurement target and output a received light signal; a controller to control light emission; a light path merging unit to merge a first outgoing light path of the first measuring light from the first light emitter and a second outgoing light path of the second measuring light from the second light emitter; and a common outgoing light path connecting the light path merging unit to a light exit portion emitting the first measuring light and the second measuring light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.