Phosphor wheel, light source unit, and image display device
To provide a phosphor wheel capable of restraining vibration caused by a driving unit for rotatably driving a wheel and reducing noise in a high frequency band. The phosphor wheel includes: a wheel substrate that has a surface on which a fluorescent material is provided; a driving unit that rotates the wheel substrate; a support portion that supports the driving unit and is fixed to a housing; and a buffer member that is provided to fill a space between the support portion and a part of the housing.
1. A projector, comprising:
a light source unit;
an illumination optical unit that includes at least one lens array, a polarization conversion element and a condenser lens, wherein light emitted from the light source unit passes through the at least one lens array, the polarization conversion element and the condenser lens and is separated for each wavelength region; and
a projection lens configured to project the light from the light source unit via the illumination optical unit, wherein the light source unit includes a wheel substrate, a housing and a buffer member that is arranged between the wheel substrate and the housing along a direction of a rotating shaft.
2. The projector according to claim 1 , wherein
the light source unit includes a motor support member that supports a motor and is fixed to the housing.
3. The projector according to claim 2 , wherein
the motor support member is integrally formed with a lens support member supporting a lens for introducing the light emitted from the light source unit to the wheel substrate.
4. The projector according to claim 1 , wherein
the light source unit includes a motor support member that supports a motor and is fixed to the housing; and
the buffer member is formed by laminating a plurality of sheet members different in hardness in a direction in which the motor support member faces to a part of the housing.
5. The projector according to claim 1 , wherein
the light source unit includes a motor support member that supports a motor and is fixed to the housing; and
the buffer member includes a first sheet member in contact with the motor support member that is softer than a second sheet member in contact with a side of the first sheet member, the side being opposite to a side of the first sheet member in contact with the motor support member.
6. The projector according to claim 1 , wherein
the light source unit includes one or more light sources.
7. The projector according to claim 1 , wherein
the buffer member is provided on a side opposite to the wheel substrate in a rotating shaft direction of a motor.
8. The projector according to claim 1 , wherein
the wheel substrate has a surface on which a fluorescent material is provided.
9. The projector according to claim 8 , wherein
when the fluorescent material is irradiated with the light emitted from the light source unit, it emits fluorescence emission light in a different wavelength region.
10. The projector according to claim 1 , wherein
the illumination optical unit includes at least one dichroic mirror.
11. The projector according to claim 10 , wherein
the light emitted from the light source unit that has passed through the condenser lens is incident on the at least one dichroic mirror.
12. The projector according to claim 11 , wherein
the at least one lens array is arranged on an optical path of the light source unit and the at least one dichroic mirror is arranged between the light source unit and the at least one lens array.