Lighting device
AssigneeKoito Manufacturing Co., Ltd.
InventorsRyota Naito, Shuhei Matsuda
Life of this patent
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Abstract
A lighting device capable of improving yield by relaxing a selection requirement for turquoise blue and making chromaticity uniform is provided. The lighting device (100) includes a first light-emitting element (12a) that emits first light belonging to a first chromaticity rank, a second light-emitting element (12b) that emits second light belonging to a second chromaticity rank, and a light mixing unit (20) that mixes the first light and the second light and radiates the light as radiated light to an outside, wherein the first chromaticity rank and the second chromaticity rank are different from each other, and the radiated light is within a chromaticity range of turquoise blue.
Claims5
A lighting device comprising:
- a first light-emitting element that emits first light belonging to a first chromaticity rank;
- a second light-emitting element that emits second light belonging to a second chromaticity rank;
- and
- a light mixing unit that mixes the first light and the second light and radiates the light as radiated light to an outside, wherein
- the first chromaticity rank and the second chromaticity rank are different from each other,
- the radiated light is included in a chromaticity range of turquoise blue;
- the chromaticity range of turquoise blue corresponds to wavelengths of 485 nm or more and 500 nm or less;
- and
- the first chromaticity rank and the second chromaticity rank overlap within the chromaticity range of turquoise blue.
Dependencies are inferred from the claim text.