Light source module, optical device, and method for producing light source module

1. A light source module, comprising:

a phosphor wheel having a phosphor layer to emit fluorescence in a case that the phosphor layer is excited with light emitted from a light source;

a drive section disposed on a phosphor-layer side of the phosphor wheel, the drive section configured to rotate the phosphor wheel;

a light shield disposed around a portion of the phosphor layer that emits the fluorescence, to shield a least a part of the emitted fluorescence;

a side plate disposed around the portion of the phosphor layer, the side plate being at least a part of the light shield shielding the at least of a part of the emitted fluorescence; and

a holder to hold the drive section.

2. The light source module according to claim 1 , further comprising:

a lens barrel to accommodate an optical system, wherein

at least two of the side plate, the holder, and the lens barrel are combined as a single unit.

3. The light source module according to claim 1 , wherein

the phosphor layer emits light in response to irradiation with the excitation light emitted from the light source, and

the phosphor layer is irradiated with the excitation light from a drive-section-side surface of the phosphor wheel.

4. The light source module according to claim 2 , wherein at least a part of the light shield includes a surface subjected to antireflection treatment to prevent reflection of the fluorescence.

5. The light source module according to claim 2 , further comprising a casing to house the drive section, the optical system, and the light shield, wherein

at least a part of the casing includes a surface subjected to antireflection treatment to prevent reflection of the fluorescence.

6. An optical device, comprising:

the light source module according to claim 1 ; and

the light source.

7. A method of producing a light source module including a phosphor wheel having a phosphor layer to emit fluorescence, the method comprising:

housing an optical system that focuses the fluorescence emitted from the phosphor layer of the phosphor wheel, within a lens barrel included in a single unit of a side plate, a holder holding a drive section, and the lens barrel, the side plate disposed in an area of the phosphor layer that emits fluorescence to shield at least a part of the emitted fluorescence, the drive section disposed on a phosphor-layer side of the phosphor wheel and connected with the phosphor wheel to rotate the phosphor wheel;

attaching the optical system housed in the lens barrel to the lens barrel with a vibration-proof member to absorb vibrations;

attaching the drive section to the holder; and

attaching the single unit to a casing that houses the drive section, the optical system, and the single unit.

8. A light source module comprising:

a phosphor wheel having a phosphor layer to emit fluorescence in a case that the phosphor layer is excited with light emitted from a light source;

a drive section disposed on a phosphor-layer side of the phosphor wheel, the drive section configured to rotate the phosphor wheel; and

a heat dissipator disposed on a side of the phosphor wheel opposite of the phosphor layer.

9. The light source module according to claim 8 , wherein the drive section rotates the phosphor wheel at a predetermined timing.

10. The light source module according to claim 8 , further comprising a lens that focuses the light from the light source onto the phosphor wheel.

11. The light source module according to claim 8 , wherein

the phosphor layer emits light in response to irradiation with the excitation light emitted from the light source, and

the phosphor layer is irradiated with the excitation light from a drive-section-side surface of the phosphor wheel.

12. The light source module according to claim 8 , wherein the heat dissipator is not in contact with the phosphor wheel.

13. The light source module according to claim 8 , wherein the heat dissipator is configured to dissipate heat generated in a portion of the phosphor layer emitting the fluorescence.

14. The light source module according to claim 8 , wherein the heat dissipator is a heat sink.

15. The light source module according to claim 8 , wherein the phosphor wheel includes a yellow phosphor region and a reflecting surface region.

16. The light source module according to claim 8 , wherein the phosphor wheel includes a green phosphor region.

17. An optical device, comprising:

the light source module according to claim 8 ; and

the light source.

18. A light source module comprising:

a phosphor wheel having a phosphor layer to emit fluorescence in a case that the phosphor layer is excited with light emitted from a light source;

a drive section disposed on a phosphor-layer side of the phosphor wheel, the drive section configured to rotate the phosphor wheel; and

a heat dissipator, wherein

the phosphor wheel is disposed between a heat dissipator and the drive section.

19. An optical device, comprising:

the light source module according to claim 18 ; and

the light source.