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`CLAIMS
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`1. A photoradiation device comprising3
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`a light emitting unit that radiates radiation light;
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`a reflection unit that reflects the radiation light; and
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`a light guide unit that guides the radiation light reflected from
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`the reflection unit to an irradiation target body,
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`wherein the light guide unit includes a first light guide face and
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`a second light guide face that faces the first light guide face,
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`the reflection unit includes a first reflection unit that reflects a
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`part of the radiation light
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`to the first light guide face, a second
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`reflection unit that reflects entering light to the second light guide face,
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`and a third reflection unit formed of a main body part provided with a
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`transmission unit which reflects a part of remainder of the radiation
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`light to the second reflection unit as the entering light, and
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`the third reflection unit is disposed with a transmission unit
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`side inclined toward a light emitting unit such that the shorter a
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`distance of the transmission unit to the light emitting unit the larger
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`an amount of transmission light of the radiation light.
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`2. The photoradiation device of claim 1, wherein the third
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`reflection unit is formed of a flat reflection plate.
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`3. The photoradiation device
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`of
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`claim 1, wherein the
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`transmission unit
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`is a notch whose opening area increases with
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`decrease in distance to the light emitting unit.
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`4. The photoradiation device
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`of
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`claim 1, wherein the
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`U!
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`10
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`15
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`20
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`25
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`transmission unit is a slit whose opening area increases with decrease
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`in distance to the light emitting unit.
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`U!
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`10
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`5. A photoradiation therapy/prophylaxis device for carrying out
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`treatment or prevention by irradiating a specific site of a living body
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`with radiation light radiated from a photoradiation device of claim 1,
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`further comprising
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`a wavelength transmitting unit which is disposed on an optical
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`path of the radiation light radiated from the light emitting unit
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`through the light guide unit, and allows
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`radiation light
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`in a
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`wavelength range of not less than 566.5 nm and not more than 780 nm
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`in the radiation light radiated from the light emitting unit,
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`wherein a specific site of a living body is irradiated with the
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`radiation light which is allowed to transmit through the wavelength
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`transmitting unit.
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