公开(公告)号：US11294235B2

公开(公告)日：2022-04-05

申请号：US17131213

申请日：2020-12-22

Applicant: LMS Co., Ltd.

Inventor： Yong Won Choi ,  Ho Seong Na ,  Min Soo Lee ,  Woo Joo Lah

IPC: G02F1/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: An optical film for efficiently and uniformly diffuses and collects the light from mini LEDs or micro LEDs, the bead diffusion layer and the pattern diffusion layer of the first diffusion sheet are formed such that a first diffusion rate of the light on the one surface of the first diffusion sheet is higher than a second diffusion rate of the light on the other surface of the first diffusion sheet.

公开(公告)号：US11698480B2

公开(公告)日：2023-07-11

申请号：US16651789

申请日：2018-09-21

Applicant: LMS Co., Ltd.

Inventor： Jeong Og Choi ,  Joo Young Kim ,  Seon Ho Yang ,  Min Soo Lee ,  Yong Won Choi

IPC: G02B5/22 ,  G02B5/20 ,  C08K5/3417 ,  C09B57/00 ,  G03B11/00

CPC classification number: G02B5/226 ,  C08K5/3417 ,  C09B57/00 ,  G02B5/208 ,  G03B11/00

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.

公开(公告)号：US11459240B2

公开(公告)日：2022-10-04

申请号：US16540597

申请日：2019-08-14

Applicant: LMS CO., LTD

Inventor： Ho Seong Na ,  Joo Young Kim ,  Min Soo Lee ,  Yong Won Choi

IPC: C01B32/192 ,  C01B32/225 ,  B01J19/10 ,  C01B32/23

Abstract: Disclosed are a method of manufacturing graphene and an apparatus therefor. The method of manufacturing graphene and the apparatus therefor according to the present disclosure allow production of high-quality graphene in a simple manner in a short time without addition of a separate additive.

公开(公告)号：US10670785B2

公开(公告)日：2020-06-02

申请号：US14917018

申请日：2014-08-30

Applicant: LMS Co., Ltd.

Inventor： Joo Young Kim ,  Seon Ho Yang ,  Hong Seok Chin ,  Min Soo Lee

IPC: G02B5/28 ,  G02B5/22 ,  G02B5/20

Abstract: An optical filter comprising a light absorption layer and a near-infrared reflection layer, and an imaging device comprising the optical filter are provided. Wherein the light absorption layer has an absorption maximum in a wavelength range of 670 to 720 nm, a wavelength at which the near-infrared reflection layer has a light transmittance of 50% is in a range of 690 to 720 nm, and the optical filter satisfies the following Mathematical Formula 1: ΔE*≤1.5  [Mathematical Formula 1] wherein the ΔE* value represents a color difference between light that is incident in a vertical direction of the optical filter and passes through the optical filter and light that is incident at an angle of 30° with respect to the vertical direction of the optical filter and passes through the optical filter.