TWI603119B - Glass fluorescent color wheel and the manufacturing method thereof - Google Patents

Description

Glass phosphor color wheel and manufacturing method thereof

The present invention relates to a color wheel and a method of manufacturing the same, and more particularly to a color wheel mounted in a projector for passing a light source of the projector and coloring the light source of the projector.

Most of today's projectors use the Digital Micromirror Device (DMD) and use Color Wheel to separate and process the color. The color wheel is mainly red, green, blue, and A combination of color filters of other colors added. In a projector applying a DMD projection system, white light emitted by a light source of the projector is focused on a color wheel by a lens, and the color wheel is driven by a high speed motor of the projector to rotate, thereby performing white light emitted by the light source. The color separation is performed, and a color beam is emitted onto the surface of the DMD, and the DMD reflects the beam and projects the projector through the lens.

It is worth noting that the color wheel of the conventional projector is made of a polymer colloid such as silicone and a phosphor powder, and is made into a fluorescent glue. Among them, the thermal stability of the polymer colloid is poor, and as the power of the excitation light source increases, It will cause deterioration of the fluorescent glue. For example, the silicone rubber can only withstand a temperature of about 150 ° C and a brightness of about 2000 lumens. When the temperature is higher than 150 ° C, the silicone will age and yellow, resulting in color. The wheel structure is damaged and therefore cannot be applied to optical systems with high temperatures or high lumens.

In view of this, the inventors have conceived and further studied, and finally invented a glass phosphor color wheel and a manufacturing method thereof.

The invention relates to a glass phosphor color wheel and a manufacturing method thereof, and the main object thereof is to provide a color wheel capable of withstanding higher temperature, so that the color wheel can be applied to an optical system of a projector with high temperature or high lumens, and the optical system is improved. The life of the color wheel.

To achieve the foregoing objective, the present invention provides a glass phosphor color wheel, comprising: a substrate having a first surface and a second surface opposite to each other, a through hole in the center; and a wheel body including a glass material And a glass phosphor formed by sintering the phosphor powder, the wheel system is coupled to the first side of the substrate, the wheel body having at least one color block.

In order to achieve the above object, the present invention further provides a method for manufacturing a glass phosphor color wheel, comprising the steps of: sintering step (a): sintering a glass material and a phosphor powder at a temperature of 500 ° C to 1000 ° C to at least a glass phosphor color block; and a molding step (b): bonding the at least one glass phosphor color block to a substrate to form a glass phosphor color wheel.

The invention utilizes the provided glass phosphor color wheel and the manufacturing method thereof, and the utility model can obtain the effect that the invention adopts the glass phosphor which can withstand higher temperature as the material of the color wheel of the projector, so that the invention The color wheel is resistant to high temperatures, so that the color wheel can be applied to high temperature or high lumen optical systems. And improve the life of the color wheel.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

〔this invention〕

20‧‧‧Substrate

20B‧‧‧Substrate

201‧‧‧ first side

201B‧‧‧ first side

202‧‧‧ second side

202B‧‧‧ second side

21‧‧‧Perforation

21B‧‧‧Perforation

22‧‧‧External structural wall

23‧‧‧Internal structural wall

24‧‧‧ring groove

30‧‧‧ wheel body

30B‧‧‧ wheel body

31‧‧‧ glass phosphor

311‧‧‧ glass material

312‧‧‧Fluorescent powder

32‧‧‧colloid

32B‧‧‧colloid

33‧‧‧ color blocks

33B‧‧‧ color blocks

Fig. 1 is an external view of an embodiment of the present invention.

Figure 2 is an exploded view of an embodiment of the present invention.

Figure 3 is a cross-sectional view of an embodiment of the present invention.

Figure 4 is an exploded view of another embodiment of the present invention.

Figure 5 is a cross-sectional view showing another embodiment of the present invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, the following is a detailed description of the following: a preferred embodiment of the glass phosphor color wheel of the present invention. 1 to 3, comprising: a substrate 20 and a wheel body 30, wherein the substrate 20 is made of a metal material of stainless steel or aluminum, and the substrate 20 can also be made of a ceramic material. The substrate 20 is a disc-shaped structure having a through hole 21 at the center thereof, and the substrate 20 has a first one. a surface 201 and a second surface 202, and an outer structural wall 22 and an inner structural wall 23 are respectively formed on the outermost and innermost edges of the first surface 201, thereby the outer structural wall 22 and the inner structure An annular groove 24 is defined between the wall 23 and the substrate 20; and the wheel body 30 is made of a glass phosphor 31 formed by sintering a glass material 311 and a phosphor powder 312. 311 is selected from the group consisting of citrate, phosphate, borate and citrate systems, and the luminescent powder 312 is selected from the group consisting of yttrium aluminum garnet (YAG), nitride (Nitride), aluminate (Aluminate), and strontium. And a fluorescent material of the oxynitride, wherein the fluorescent powder 312 has a doping ratio of not more than 50% by weight, and the wheel body 30 is bonded to the first surface 201 of the substrate 20, In more detail, the wheel body 30 is embedded in the annular groove 24 by a colloid 32. The wheel body 30 can have at least one color block 33. In this embodiment, the wheel body 30 is There are four color blocks 33, and the size and color of each color block 33 can be the same or different according to actual use requirements.

In addition, please refer to Figure 4 and Figure 5, this is the basis In another embodiment of the invention, which is changed according to the previous embodiment, the same is not repeated. The glass phosphor color wheel comprises: a substrate 20B and a wheel body 30B, wherein: the substrate 20B is a disk-shaped structure having a through hole 21B in the center thereof, the substrate 20B having a first surface 201B and a second surface 202B opposite to each other; The wheel body 30B is coupled to the first surface 201B of the substrate 20B. In more detail, the wheel body 30B is bonded to the first surface 201B of the substrate 20B by a colloid 32B. The wheel body 30B is bonded. There may be at least one color block 33B, which in this embodiment has a complete circular one color block 33B.

The above description is the main components of the embodiment of the present invention and their configuration description. As for the manufacturing method of the embodiment of the present invention, please refer to FIG. 1 to FIG. 3, which includes the following steps: sintering step (a): the glass material 311 and the phosphor powder 312 are at a temperature of 500 ° C to 1000 ° C. Sintering is formed into at least one color block 33 of the glass phosphor 31; and forming step (b): the at least one color block 33 is bonded to a substrate 20 by being adhered or embedded through a colloid 32 A glass phosphor color wheel is formed.

According to the present invention, it can be obtained that the composition of the glass phosphor 31 of the present invention is completely gel-free, and therefore can withstand higher temperatures without deterioration, so that a color wheel made of a glass phosphor is used. It can be applied to high-power laser projector modules, which can maintain the inherent optical characteristics under high-power light source, thereby making the color wheel applicable to high-temperature or high-lumen optical systems and improving the color wheel. The service life.

From the above, it is known that the present invention truly conforms to "industry availability," "novelty," and "progressiveness", and submits an invention patent application in accordance with the law. Thanks for reviewing and granting patents as soon as possible.

20‧‧‧Substrate

201‧‧‧ first side

21‧‧‧Perforation

22‧‧‧External structural wall

23‧‧‧Internal structural wall

24‧‧‧ring groove

31‧‧‧ glass phosphor

311‧‧‧ glass material

312‧‧‧Fluorescent powder

32‧‧‧colloid

33‧‧‧ color blocks

Claims (7)

A glass phosphor color wheel comprises: a substrate having a first surface and a second surface opposite to each other, a perforation in the center thereof; and a wheel body made of glass material and phosphor powder at 500 ° C to 1000 ° C a glass phosphor formed by sintering the temperature, wherein the glass material is selected from the group consisting of a phosphate, a borate, and a citrate system, the phosphor powder being selected from the group consisting of aluminate (Aluminate) and nitrogen. The oxide material of the oxide (Oxynitride), wherein the fluorescent powder has a doping ratio of not more than 50% by weight, and the wheel system is bonded or embedded to the first side of the substrate, the wheel body having at least One color block. The glass phosphor color wheel of claim 1, wherein the substrate is a disc-shaped structure and is made of a metal material or a ceramic material. The glass phosphor color wheel of claim 1, wherein the substrate is made of aluminum or stainless steel. The glass phosphor color wheel of claim 1, wherein the wheel system is bonded to the first side of the substrate by a glue to be bonded or embedded. The glass phosphor color wheel of claim 1, wherein the outermost edge and the innermost edge of the first surface respectively form an outer structural wall and an inner structural wall, and the outer structural wall An annular groove is defined between the inner structural wall and the substrate, and the wheel system is located in the annular groove. A method for manufacturing a glass phosphor color wheel according to claim 1, comprising the following steps: Sintering step (a): sintering glass material and phosphor powder into at least one glass phosphor color block at a temperature of 500 ° C to 1000 ° C; and molding step (b): at least one glass phosphor color block Bonded or embedded on a substrate to form a glass phosphor color wheel. The method for manufacturing a glass phosphor color wheel according to claim 6, wherein in the molding step (b), the glass phosphor color block is adhered or embedded by a colloid. Bonded to the substrate.