Patents
US 10028350 B2: Method and apparatus for horticultural lighting with enhanced dimming and optimized efficiency
- Granted
- 2018-07-17
- Filed
- 2017-11-24 application 15821941
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method and apparatus for a horticultural light for use in a horticultural facility that uses both continuous current control and discontinuous current control to select an intensity for each LED string in the horticultural light. Continuous current control is selected when the horticultural light is operating above a threshold intensity and discontinuous current control is selected when the horticultural light is operating below the threshold intensity for enhanced dimming fidelity. A CPU detects the number of LED strings present in the horticultural light and determines the optimal operating voltage for each detected LED string based upon the detected forward voltage of each detected LED string. Based upon the optimal operating voltage determined for each LED string, the CPU additionally selects an optimized current stabilization network for each detected LED string.
Source: PVGPATDIS, file of 2026-04-10 (ipg180717.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Illum Horticulture LLC 20 patents | US company or organization | Mesa, AZ | Illum Horticulture LLC Form D issuer EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Stephen P. Adams | Mesa, AZ | 60 | PVGPATDIS, file of 2026-04-10 | |
| James V. Rhodes | Mesa, AZ | 9 | PVGPATDIS, file of 2026-04-10 | |
| Arthur A. Wilkes | Chandler, AZ | 9 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H05B | Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general | H05B45/20 | PVGPATDIS, file of 2026-04-10 |
| A01G | Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops or seaweed; forestry; watering | A01G7/045 | PVGPATDIS, file of 2026-04-10 |
| F21V | Functional features or details of lighting devices or systems thereof; structural combinations of lighting devices with other articles, not otherwise provided for | F21V5/007 | PVGPATDIS, file of 2026-04-10 |
| F21Y | Indexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted | F21Y2105/16 | PVGPATDIS, file of 2026-04-10 |
| Y02B | Climate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications | Y02B20/30 | PVGPATDIS, file of 2026-04-10 |
| Y02P | Climate change mitigation technologies in the production or processing of goods | Y02P60/14 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-05-25 | Assignment Assignment of assignor's interest | WARBIRD CAPITAL LLC signed 2023-05-25 | SCYNCE LED LLC NEW CANAAN, CT | 63760/643 | PASDL, file of 2026-10-15 |
| 2023-03-28 | Assignment Assignment of assignor's interest | ILLUM HORTICULTURE LLC signed 2023-03-21 | WARBIRD CAPITAL LLC NEW CANAAN, CT | 63126/76 | PASDL, file of 2026-10-15 |
| 2023-03-07 | Release of security interest Release of security interest | STEPHEN P AND KRISTI A ADAMS FAMILY TRUST signed 2023-03-06 | ILLUM HORTICULTURE LLC MESA, AZ | 62901/784 | PASDL, file of 2026-10-15 |
| 2022-03-25 | Security interest Security interest Security interest | ILLUM HORTICULTURE LLC signed 2022-03-22 | STEPHEN P AND KRISTI A ADAMS FAMILY TRUST MESA, AZ | 60088/140 | PASDL, file of 2026-10-15 |
| 2021-11-08 | Assignment Assignment of assignor's interest | ILLUM TECHNOLOGY LLC signed 2021-08-12 | ILLUM HORTICULTURE, LLC MESA, AZ | 58047/15 | PASDL, file of 2026-10-15 |
| 2018-06-12 | Assignment Assignment of assignor's interest | ILLUM TECHNOLOGY, LLC signed 2018-06-12 | ILLUM HORTICULTURE LLC MESA, AZ | 46056/338 | PASDL, file of 2026-10-15 |
| 2017-12-19 | Assignment Assignment of assignor's interest | ADAMS, STEPHEN P signed 2017-11-24 RHODES, JAMES V signed 2017-11-24 WILKES, ARTHUR A signed 2017-11-24 | ILLUM TECHNOLOGY, LLC MESA, AZ | 44441/250 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.