Invention Grant
- Patent Title: Nanostructured meta-materials and meta-surfaces to collimate light emissions from LEDs
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Application No.: US16161875Application Date: 2018-10-16
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Publication No.: US10996451B2Publication Date: 2021-05-04
- Inventor: Venkata Ananth Tamma
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Priority: EP18158381 20180223
- Main IPC: G02B19/00
- IPC: G02B19/00 ; H01L33/58 ; F21V7/00 ; F21V13/04 ; F21Y115/10

Abstract:
A system, method and device for collimating the output of a light emitting diode (LED) are disclosed. The system, method and device include an LED substrate including a top surface from which the light is emitted, and an array of subwavelength scattering antennas positioned within the emitted light path, the array of subwavelength scattering antennas configured to select directions of scatter of the LED emitted light to provide collimated light output from the device. The array may be aligned perpendicular to the plane of propagation of the light emitted from the LED and may be positioned adjacent to the top surface. The array may be at least partially, or completely, positioned within the LED substrate. The array may be spaced a distance from the top surface and the spacing may be achieved using a dielectric spacer adjacent to the top surface. The array may be positioned within the dielectric spacer.
Public/Granted literature
- US20190113727A1 NANOSTRUCTURED META-MATERIALS AND META-SURFACES TO COLLIMATE LIGHT EMISSIONS FROM LEDS Public/Granted day:2019-04-18
Information query
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B19/00 | 聚光镜(用于显微镜的入G02B21/08) |