Patents
US 11698480 B2: Optical product and optical filter including same
- Granted
- 2023-07-11
- Filed
- 2018-09-21 application 16651789
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present invention relates to an optical article, and an optical filter and an imaging device including the same. The optical article comprises: a near-infrared absorption glass substrate including a divalent copper ion as a chromatic ingredient; and a pigment dispersion layer formed on one surface or both surfaces of the near-infrared absorption glass substrate and having a near-infrared absorption pigment and an ultraviolet absorption pigment dispersed across the resin matrix thereof. Provided with a first and a second transmission cut-off region, the optical article has the advantage of allowing the fabrication of an excellent near-infrared cut-off filter that can effectively block light in near-infrared and ultraviolet bands and does not permit a difference in color sense with the change of incident angles.
Source: PVGPATDIS, file of 2026-04-10 (ipg230711.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| LMS Co., Ltd. 85 patents | Foreign company or organization | Pyeongtaek-si, KR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jeong Og Choi | Seoul, KR | 17 | PVGPATDIS, file of 2026-04-10 | |
| Joo Young Kim | Suwon-si, KR | 337 | PVGPATDIS, file of 2026-04-10 | |
| Seon Ho YANG | Seoul, KR | 10 | PVGPATDIS, file of 2026-04-10 | |
| Min Soo LEE | Uiwang-si, KR | 40 | PVGPATDIS, file of 2026-04-10 | |
| Yong Won Choi | Suwon-si, KR | 30 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C09B | Organic dyes or closely-related compounds for producing dyes ; , e.g. pigments; mordants; lakes | C09B67/009 | PVGPATDIS, file of 2026-04-10 |
| G02B | Optical elements, systems or apparatus | G02B5/226 | PVGPATDIS, file of 2026-04-10 |
| C08K | Use of inorganic or non-macromolecular organic substances as compounding ingredients | C08K5/3417 | PVGPATDIS, file of 2026-04-10 |
| G03B | Apparatus or arrangements for taking photographs or for projecting or viewing them; apparatus or arrangements employing analogous techniques using waves other than optical waves; accessories therefor | G03B11/00 | 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 |
|---|---|---|---|---|---|
| 2020-03-27 | Assignment Assignment of assignor's interest | CHOI, JEONG OG signed 2020-03-10 CHOI, YONG WON signed 2020-03-10 KIM, JOO YOUNG signed 2020-03-10 LEE, MIN SOO signed 2020-03-10 YANG, SEON HO signed 2020-03-10 | LMS CO., LTD. PYEONGTAEK-SI, GYEONGGI-DO | 52253/237 | ECORSEXC, file of 2026-09-25 |
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.