Wheel and projection device using the same

Patent metadata

Field	Value
Publication number	US-2016291315-A1
Application number	US-201514837925-A
Country	US
Kind code	A1
Filing date	Aug 27, 2015
Priority date	Mar 30, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A wheel and a projection device using the same are provided. The wheel includes a wheel plate and a wavelength conversion layer. The wheel plate includes a first surface, a second surface, a through hole, a first groove, and a second groove. The first surface is opposite to the second surface, and forms a coating area and a non-coating area. The through hole is located in the coating area. The second groove is formed on the second surface and protrudes over the first surface to assemble a driver. The wavelength conversion layer is formed in the coating area of the first surface to convert a wavelength of a light beam.

First claim

What is claimed is:

1 . A wheel, comprising:
a wheel plate, comprising:
a first surface, forming a coating area and a non-coating area;
a second surface, opposite to the first surface;
a through hole, located in the coating area;
a first groove; and
a second groove, formed on the second surface and protruding over the first surface to assemble a driver; and
a wavelength conversion layer, formed within the coating area of the first surface to convert a wavelength of a light beam.

2 . The wheel according to claim 1 , wherein the first groove is formed on the non-coating area of the first surface.

3 . The wheel according to claim 1 , further comprising a light transmissive sheet, covering the through hole, wherein the first groove is located aside the through hole and the light transmissive sheet interlocks at least partially with the first groove.

4 . The wheel according to claim 3 , further comprising an adhesive binding agent to bind the light transmissive sheet with the first groove.

5 . The wheel according to claim 3 , wherein the first groove is a sector-shaped groove and the light transmissive sheet is a sector-shaped sheet.

6 . The wheel according to claim 5 , wherein the through hole extends from the coating area to the non-coating area, and two lateral sides and an outer edge of the light transmissive sheet conform with and are closely adjacent to the through hole.

7 . The wheel according to claim 1 , wherein the first groove is located on the second surface.

8 . The wheel according to claim 1 , further comprising a first balancer disposed inside of the first groove.

9 . The wheel according to claim 1 , wherein the first groove is an annular groove and surrounds an axis of the wheel plate.

10 . The wheel according to claim 1 , further comprising a balancing perforation located in the non-coating area.

11 . The wheel according to claim 1 , further comprising a bending part, located on the second surface and connected with an outer edge of the wheel plate.

12 . The wheel according to claim 11 , further comprising a second balancer disposed on the second surface and adjacent to the bending part.

13 . The wheel according to claim 1 , wherein the wavelength conversion layer comprises a first wavelength conversion material and a second wavelength conversion material, configured to convert the light beam into a first wavelength-converted light beam and a second wavelength-converted light beam, respectively.

14 . The wheel according to claim 1 , wherein the coating area is formed adjacent to an outer edge of the first surface and surrounds the non-coating area.

15 . The wheel according to claim 3 , wherein the first groove is located on the second surface.

16 . A projection device, comprising:
a light emitting unit, configured to emit a light beam; a wheel, disposed on a transmission path of the light beam and comprising:
a wheel plate, comprising:
a first surface, forming a coating area and a non-coating area;
a second surface, opposite to the first surface;
a through hole, located in the coating area;
a first groove; and
a second groove, formed on the second surface and protruding over the first surface; and

a wavelength conversion layer, formed within the coating area of the first surface to convert a wavelength of the light beam;
a driver, assembled onto the second groove of the wheel to drive a rotation of the wheel plate; a light valve, disposed on the transmission path of the light beam to modulate the light beam with wavelengths converted by the wavelength conversion layer into an image light beam; and a projection lens, disposed on a transmission path of the image light beam.

17 . The projection device according to claim 16 , wherein the first groove is formed on the non-coating area of the first surface.

18 . The projection device according to claim 16 , wherein the wheel further comprises a light transmissive sheet, covering the through hole, the first groove is located aside the through hole and the light transmissive sheet interlocks at least partially with the first groove.

19 . The projection device according to claim 18 , wherein the wheel further comprises an adhesive binding agent to bind the light transmissive sheet with the first groove.

20 . The projection device according to claim 18 , wherein the driver, the first groove, and the light transmissive sheet form an accommodating cavity for accommodating the adhesive binding agent.

21 . The projection device according to claim 18 , wherein the first groove is a sector-shaped groove and the light transmissive sheet is a sector-shaped sheet.

22 . The projection device according to claim 21 , wherein the through hole extends from the coating area to the non-coating area, and two lateral sides and an outer edge of the light transmissive sheet conform with and are closely adjacent to the through hole.

23 . The projection device according to claim 16 , wherein the first groove is located on the second surface.

24 . The projection device according to claim 16 , wherein the wheel further comprises a first balancer disposed inside of the first groove.

25 . The projection device according to claim 16 , wherein the first groove is an annular groove and surrounds an axis of the wheel plate.

26 . The projection device according to claim 16 , wherein the wheel further comprises a balancing perforation located in the non-coating area.

27 . The projection device according to claim 16 , wherein the wheel further comprises a bending part, located on the second surface and connected with an outer edge of the wheel plate.

28 . The projection device according to claim 27 , wherein the wheel further comprises a second balancer disposed on the second surface and adjacent to the bending part.

29 . The wheel according to claim 18 , wherein the first groove is located on the second surface.

Assignees

• Coretronic Corp

Inventors

• Hsu Pi-Tsung

Classifications

• G03B21/204

  using secondary light emission, e.g. luminescence or fluorescence (using different colours G03B33/00; if related to video signals H04N9/3197) · CPC title

• G03B33/08

  Sequential recording or projection (G03B33/02, G03B33/04, G03B33/06 take precedence) · CPC title

• G02B26/008 Primary

  in the form of devices for effecting sequential colour changes, e.g. colour wheels · CPC title

• G03B21/14

  Details · CPC title