US 10,770,687 B2Granted

Light-emitting system

AssigneePioneer Corporation

InventorHiroaki Kitahara

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Abstract

A standard direction (S) is a horizontal direction (a direction along X direction in the drawing). A base material (200) is supported by a frame body (250) so that a second surface (204) of the base material (200) is oriented obliquely upward from the standard direction (S). Thereby, a reference direction (R) is oriented obliquely upward from the standard direction (S). Light from the light-emitting system (20) has standard chromaticity in the standard direction (S). In addition, the light from the light-emitting system (20) has first chromaticity and second chromaticity in a first side direction (S1) and a second side direction (S2), respectively, the first side direction (S1) and the second side direction (S2) being symmetric with respect to the standard direction (S). A difference between the first chromaticity and the standard chromaticity is smaller than a difference between the second chromaticity and the standard chromaticity.

Claims10

Dependent claims

A light-emitting system comprising:

a light-emitting unit comprising a resonator and an organic layer interposed in the resonator, the light-emitting unit inclined from a standard direction,
wherein a light distribution of light from the light-emitting unit has a higher luminous intensity in the standard direction compared to that in a reference direction along a width direction of any of the light-emitting unit, the resonator, or the organic layer,
wherein the light from the light-emitting unit comprises standard chromaticity in the standard direction, the light from the light-emitting unit further comprising first chromaticity and second chromaticity in a first side direction and a second side direction, respectively, the first side direction and the second side direction being symmetric with respect to the standard direction, and
wherein a difference between the first chromaticity and the reference chromaticity is smaller than a difference between the second chromaticity and the reference chromaticity.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/315,552Filed 12 Jul 2016
Published: US 2019/0245163 A18 Aug 2019
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H10K 59/876
Arrangements for extracting light from the devices: comprising a resonant cavity structure, e.g. Bragg reflector pair
H05B 33/02
Electroluminescent light sources: details
H10K 50/125
Characterised by the electroluminescent [EL] layers: specially adapted for multicolour light emission, e.g. for emitting white light
H10K 59/38
Devices specially adapted for multicolour light emission: comprising colour filters or colour changing media [CCM]

Family

US 2019/0245163 A1Pre-grant publication · published 8 Aug 2019
US 10,770,687 B2This patent

From the US filing history. Foreign family members aren’t listed.

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