Sequential Linear LED System With Low Output Ripple
US-2015382414-A1 · Dec 31, 2015 · US
LED drive current adjustment for irradiance step response output
US9955539B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9955539-B2 |
| Application number | US-201615007084-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2016 |
| Priority date | Jun 19, 2014 |
| Publication date | Apr 24, 2018 |
| Grant date | Apr 24, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to a temperature of the one or more light emitting device. The light is adjusted via modifying a current supplied to the one or more light emitting devices.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for operating one or more light emitting devices, comprising: providing a current to the one or more light emitting devices that corresponds to a desired irradiance; and modifying the desired irradiance via a linear approximation of lighting array irradiance versus lighting array temperature, where the linear approximation of lighting array irradiance versus lighting array temperature is expressed as a slope and offset. 2. The method of claim 1 , where the lighting array temperature is a temperature of a light emitting diode junction. 3. The method of claim 1 , where the current is provided via a voltage regulator. 4. The method of claim 3 , where the current is adjusted via a variable resistor. 5. The method of claim 4 , where resistance of the variable resistor is adjusted via a controller. 6. The method of claim 1 , further comprising updating the desired irradiance in response to a change in temperature of the one or more light emitting devices greater than a threshold. 7. The method of claim 1 , further comprising modifying the current in response to modifying the desired irradiance.
Assignees
Inventors
Classifications
- H05B45/395Primary
Linear regulators · CPC title
Controlling the intensity of the light · CPC title
with an active control inside an LED matrix · CPC title
- H05B33/0812Primary
Electricity · mapped topic
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9955539B2 cover?
- A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to a temperature of the one or more light emitting device. The light is adjusted via modifying a current supplied to the one or more light emitting devices.
- Who is the assignee on this patent?
- Phoseon Technology Inc
- What technology area does this patent fall under?
- Primary CPC classification H05B45/395. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 24 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).