IP Library › Granted Patent US 12,411,347
Granted Patent B2
US 12,411,347 · App. 18/021,215 · Granted Sep 9, 2025

Polymer rod that shapes emitted light into symmetrical light

Inventors: Chong Cook Kim (Seoul, KR); Myeong Ho Kim (Pohang-si, KR)
Assignee: LESSENGERS Inc.
G02B27/0916G02B1/041G02B27/0966H01S5/02253
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Quick Facts
Patent No.
US 12,411,347
App. No.
18/021,215
Granted
Sep 9, 2025
Kind
B2
Abstract

The present invention relates to a polymer rod that shapes emission light emitted from a light source chip into symmetrical light and, more particularly, to a polymer rod that is formed on a light emission part of a laser diode so as to change the shape of emission light.

Claims (6)

1. A polymer rod which is formed on a light emission part of a light source chip, wherein the polymer rod shapes emission light emitted from the light source chip into symmetrical light,

wherein the polymer rod is prepared by a method comprising the steps of aligning a micropipette filled with a polymer rod material solution to the light emission part of the light source chip; forming a meniscus of the polymer load material solution; and drawing out and extending the micropipette in a direction perpendicular to a surface of the light emission part and evaporating a solvent of the polymer rod material solution to prepare the polymer rod.

2. The polymer rod of claim 1 , wherein the polymer rod is a tapered shape, a cylindrical shape, or a lens shape.

3. The polymer rod of claim 1 , wherein the polymer rod is prepared by directly contacting the light emission part.

4. The polymer rod of claim 1 , wherein the polymer rod is formed of a polymer having a refractive index of 1.3 to 2.0.

5. The polymer rod of claim 1 , wherein a surface of the polymer rod connected to the light emission part has a diameter of 1 mm or less and a height of 10 mm or less.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 3, 2023
From: KIM, CHONG COOK; KIM, MYEONG HO
To: LESSENGERS INC.
Reel/Frame 062864/0537 →
Priority Claims (1)
KR 10-2020-0102178 · Aug 14, 2020 · national
Continuity (1)
Related Publication 20230324704A1 · Oct 12, 2023
References Cited (8)
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WO WO2019072759 · 2019 [cited by applicant]
International Search Report and the Written Opinion Dated Dec. 23, 2021 From the International Searching Authority Re. Application No. PCT/KR2021/010144 and Its Translation of Search Report Into English. (8 Pages). [cited by applicant]