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 phosphor wheel, comprising:
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.
2. The phosphor wheel according to claim 1 , wherein
the buffer member is formed by laminating a plurality of sheet members different in hardness in a direction in which the support portion faces to a part of the housing, and
among the sheet members, a first sheet member in contact with the support portion 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 support portion.
3. The phosphor wheel according to claim 1 ,
wherein the support portion is integrally formed with a lens support portion supporting portion a lens member for introducing light from a light source to the wheel substrate.
4. The phosphor wheel according to claim 1 ,
wherein the buffer member is provided on a side opposite to the wheel substrate in a rotating shaft direction of the driving unit.
5. A light source unit, comprising:
a light source; and
a phosphor wheel that includes a fluorescent material that, when the fluorescent material is irradiated with light emitted from the light source, emits fluorescence emission light in a different wavelength region,
wherein the phosphor wheel includes
a wheel substrate that has a surface on which the 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.
6. An image display device, comprising:
a light source unit that includes a light source and a phosphor wheel including a fluorescent material that, when the fluorescent material is irradiated with light emitted from the light source, emits fluorescence emission light in a different wavelength region; and
an optical system that projects an image formed on the basis of a luminous flux emitted from the light source unit onto a plane of projection,
wherein the phosphor wheel of the light source unit 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.