公开(公告)号：US20210123573A1

公开(公告)日：2021-04-29

申请号：US16901478

申请日：2020-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chohui KIM ,  Seulgee LEE ,  Sungwoo CHOI ,  Inhyung LEE

IPC: F21K9/64 ,  A01G7/04 ,  F21V23/00

Abstract: A light emitting device for plant growth includes a blue light emitting diode (LED) configured to emit blue light, and at least one wavelength converting material configured to be excited by the blue light and convert the blue light into light having a different wavelength, the converted light being light for plant growth. An emission spectrum of the light for plant growth is when a photosynthetic photon flux (PPF) in a 400 nm to 500 nm band is 1, a PPF in a 500 nm to 600 nm band is in a range of 6 to 10, and a PPF in a 600 nm to 700 nm is in a range of 5 to 7.

公开(公告)号：US20220209075A1

公开(公告)日：2022-06-30

申请号：US17185431

申请日：2021-02-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seongmin KIM ,  Chohui KIM ,  Jeongeun YUN ,  Seulgee LEE ,  Sungwoo CHOI ,  Jeongrok OH ,  Chulsoo YOON

IPC: H01L33/50

Abstract: A white light emitting device is provided. The white light emitting device includes a blue light emitting diode configured to emit blue light having a peak wavelength in a first range of 440 nm to 455 nm; a first wavelength conversion material, based on being excited by the blue light, emits first light having a peak wavelength in a second range of 535 nm to 550 nm and a full width at half maximum (FWHM) of 60 nm or less; and a second wavelength conversion material, based on being excited by the blue light, emits second light having a peak wavelength in a third range of 620 nm to 660 nm, wherein a melanopic photopic ratio of white light emitted from the white light emitting device is 0.65 or less, and a color rendering index (CRI) of the white light is 80 or more.

公开(公告)号：US20230160545A1

公开(公告)日：2023-05-25

申请号：US18158207

申请日：2023-01-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo CHOI ,  Seongmin KIM ,  Jeongeun YUN ,  Chohui KIM ,  Seulgee LEE ,  Jeongrok OH ,  Chulsoo YOON

IPC: F21K9/64 ,  H01L25/075 ,  H01L33/50

CPC classification number: F21K9/64 ,  H01L25/0753 ,  H01L33/504 ,  F21Y2115/10

Abstract: A light emitting diode (LED) module that is configured to emit white light is provided. The LED module includes: a blue light emitting diode configured to emit blue light having a first peak wavelength of 420 nm to 465 nm; and a near-infrared wavelength conversion material that is configured to be excited by the blue light to emit additional light having a peak wavelength in a range of 740 nm to 900 nm, and further having a full width at half maximum (FWHM) of 120 nm or less. The near-infrared wavelength conversion material includes Ca(Al12-x-y,Gay)O19:xCr3+ (0≤x≤1, 0≤y≤6).

公开(公告)号：US20220210881A1

公开(公告)日：2022-06-30

申请号：US17500571

申请日：2021-10-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seulgee LEE ,  Seongmin KIM ,  Chohui KIM ,  Jeongeun YUN ,  Sungwoo CHOI ,  Jeongrok OH ,  Chulsoo YOON

IPC: H05B45/20 ,  H05B45/30 ,  F21K9/64 ,  H05B45/10 ,  H01L33/50

Abstract: An LED lighting apparatus, including an LED light source configured to emit white light having a first melanopic/photopic (M/P) ratio; a tuning LED light source configured to emit tuning blue light having a peak wavelength in a range of 465 nm to 495 nm; and a driving control unit configured to control currents respectively applied to the LED light source and the tuning LED light source to generate tuned white light having a second M/P ratio higher than the first M/P ratio