LIGHTING DEVICE AND IMAGE DISPLAY DEVICE
First Claim
1. A lighting device comprising:
- a first light source group having a plurality of first light sources which are partitioned into a plurality of sections and are controlled to light for each of the sections; and
a second light source group having a plurality of second light sources which are partitioned into the plurality of sections and are controlled to light for each of the sections, each of second light sources having a light distribution different from that of each of the first light sources,wherein the first and second light source groups are allowed to light independently of each other, and also allowed to light concurrently,the plurality of first light sources are arranged in a first array pattern which allows a uniform in-plane-distribution of luminance along a plane located at a predetermined distance therefrom when whole of the first light source group is under lighting condition, andthe plurality of second light sources are arranged in a second array pattern different from the first array pattern, the second array pattern allowing a uniform in-plane-distribution of luminance along the plane located at the predetermined distance therefrom when whole of the second light source group is under lighting condition.
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Accused Products
Abstract
A lighting device includes: a first light source group having first light sources partitioned into sections and controlled to light for each section; and a second light source group having second light sources partitioned into sections and controlled to light for each section. The second light source has a light distribution different from the first light source. The first and second light source groups are allowed to light independently of each other. The first light sources are arranged in a first array pattern allowing a uniform in-plane-distribution of luminance at a predetermined distance therefrom when whole of the first light source group is under lighting condition. The second light sources are arranged in a second array pattern different from the first array pattern. The second array pattern allows a uniform in-plane-distribution of luminance at the predetermined distance therefrom when whole of the second light source group is under lighting condition.
12 Citations
18 Claims
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1. A lighting device comprising:
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a first light source group having a plurality of first light sources which are partitioned into a plurality of sections and are controlled to light for each of the sections; and a second light source group having a plurality of second light sources which are partitioned into the plurality of sections and are controlled to light for each of the sections, each of second light sources having a light distribution different from that of each of the first light sources, wherein the first and second light source groups are allowed to light independently of each other, and also allowed to light concurrently, the plurality of first light sources are arranged in a first array pattern which allows a uniform in-plane-distribution of luminance along a plane located at a predetermined distance therefrom when whole of the first light source group is under lighting condition, and the plurality of second light sources are arranged in a second array pattern different from the first array pattern, the second array pattern allowing a uniform in-plane-distribution of luminance along the plane located at the predetermined distance therefrom when whole of the second light source group is under lighting condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An image display device comprising:
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a display panel that performs image display; and a backlight that emits light for image display toward the display panel, wherein the backlight includes a first light source group having a plurality of first light sources which are partitioned into a plurality of sections and are controlled to light for each of the sections, and a second light source group having a plurality of second light sources which are partitioned into the plurality of sections and are controlled to light for each of the sections, each of second light sources having a light distribution different from that of each of the first light sources, the first and second light source groups are allowed to light independently of each other, and also allowed to light concurrently, the plurality of first light sources are arranged in a first array pattern which allows a uniform in-plane-distribution of luminance along a plane located at a predetermined distance therefrom when whole of the first light source group is under lighting condition, and the plurality of second light sources are arranged in a second array pattern different from the first array pattern, the second array pattern allowing a uniform in-plane-distribution of luminance along the plane located at the predetermined distance therefrom when whole of the second light source group is under lighting condition. - View Dependent Claims (16, 17, 18)
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Specification