ILLUMINATION APPARATUS AND DISPLAY APPARATUS
First Claim
1. An illumination apparatus, comprising:
- a substrate;
a plurality of light-emitting devices mounted on the substrate;
a phosphor layer to obtain white light based on light from the plurality of light-emitting devices; and
a light beam control portion to control the light from each of the plurality of light-emitting devices so that a view angle dependency of a chromaticity distribution of the phosphor layer is suppressed.
2 Assignments
0 Petitions
Accused Products
Abstract
[Object] To provide an illumination apparatus capable of reducing a view angle dependency of a chromaticity distribution in a light-emitting surface of a phosphor layer.
[Solving Means] A light beam control device (11) that controls emitted light from light-emitting diodes (10) so that a view angle dependency of a chromaticity distribution in a light-emitting surface (22a) of a phosphor layer (22) is suppressed is interposed between the light-emitting diodes (10) and the phosphor layer (22). The light beam control device (11) causes the emitted light from the light-emitting diodes (10) to be bent in a vertical direction or an approximately-vertical direction with respect to the light-emitting surface (22a) of the phosphor layer (22) and thus causes the light to enter the phosphor layer (22). As a result, light that obliquely enters a surface of the phosphor layer (22) is lessened, and the view angle dependency of the chromaticity distribution in the light-emitting surface (22a) of the phosphor layer (22) is reduced.
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Citations
18 Claims
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1. An illumination apparatus, comprising:
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a substrate; a plurality of light-emitting devices mounted on the substrate; a phosphor layer to obtain white light based on light from the plurality of light-emitting devices; and a light beam control portion to control the light from each of the plurality of light-emitting devices so that a view angle dependency of a chromaticity distribution of the phosphor layer is suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display apparatus, comprising:
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a display panel; and an illumination apparatus provided adjacent to the display panel, the illumination apparatus including a substrate, a plurality of light-emitting devices mounted on the substrate, a phosphor layer to obtain white light based on light from the plurality of light-emitting devices, and a light beam control portion to control the light from each of the plurality of light-emitting devices so that a view angle dependency of a chromaticity distribution of the phosphor layer is suppressed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification