Illuminating device having fluorescent lamp, display apparatus including the same, and light-diffusing film
AssigneeSony Corporation
InventorsKazuhiko Morizawa, Sung-kil Lee, Takahiro Igarashi, Tsuneo Kusunoki
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Abstract
An illuminating device includes a fluorescent lamp including a blue phosphor and a red phosphor applied on an inner surface, the fluorescent lamp emitting blue light and red light from the blue phosphor and the red phosphor, respectively; and a green phosphor layer disposed outside the fluorescent lamp, the green phosphor layer containing a green phosphor containing Eu2+ or Ce3+ as a luminescent center. Green light emitted from the green phosphor excited by the blue light is mixed with the red light and the blue light so that white light is emitted from the illuminating device.
Claims20
An illuminating device comprising:
- a fluorescent lamp including a blue phosphor and a red phosphor applied on an inner surface, the fluorescent lamp emitting blue light and red light from the blue phosphor and the red phosphor, respectively;
- and
- a green phosphor layer disposed outside the fluorescent lamp, the green phosphor layer containing a green phosphor containing Eu2+ or Ce3+ as a luminescent center,
- wherein green light emitted from the green phosphor excited by the blue light is mixed with the red light and the blue light so that white light is emitted from the illuminating device.
An light-diffusing film comprising:
- a transparent sheet substrate;
- and
- a light-diffusing layer formed on the transparent sheet substrate, the light-diffusing layer containing a resin binder and a green phosphor containing Eu2+ or Ce3+ as a luminescent center,
- wherein the light-diffusing layer is disposed outside a fluorescent lamp having an inner surface on which a blue phosphor and a red phosphor are applied so that the fluorescent lamp emits blue light and red light, and is used in an illuminating device that emits white light as green light emitted from the green phosphor excited by the blue light mixes with the red light and the blue light.
Dependencies are inferred from the claim text.