TWI475313B - Projection glass module - Google Patents

Description

Projection glass module

The invention relates to a glass module, in particular to a projection glass module.

General buildings or mass transit vehicles will be provided with transparent glass walls or glass curtains to enhance the light entering the room for good lighting and beautification. In addition, people in the room can also view the outdoor scenery through the glass wall. Some commercial buildings or department stores use glass walls to enhance the overall artistic sense of the building to highlight its characteristics and attract customers. Although the glass wall already has the above advantages, the glass wall cannot be changed in appearance after being constructed, and is relatively monotonous and unchanged. Therefore, if you can give the glass wall more practical functions, such as playing a commercial or any image on the projection screen, it will enhance the competitiveness and practicality of the product.

Therefore, an object of the present invention is to provide a projection glass module in which a double-sided projection image can be formed and a clear image is formed.

Therefore, the projection glass module of the present invention can be projected by a projector to form an image, and the projection glass module comprises: an imaging unit And at least one light absorbing unit.

The imaging unit includes two glass layers spaced apart from each other and respectively permeable to light, a glue layer between the glass layers, and a plurality of scattering particles blended in the glue layer and capable of reflecting light. The glue layer, together with the glass layers, has a plurality of side surfaces that are connected to each other. The light projected by the projector can pass through any of the glass layers and enter the glue layer and be reflected by the scattering particles to form the image. The light absorbing unit comprises a lighting layer on one side of the surface and allowing light reflected by the scattering particles to pass through, and a light collecting layer disposed on an outer side of the lighting layer and absorbing through the lighting layer Light absorbing plate.

The effect of the invention is that, by using the structural design of the imaging unit, the scattering particles can reflect the light projected by the projector to form an image regardless of which side of the imaging unit is mounted. In addition, the lighting layer of the light absorbing unit can assist in guiding the light, so that the light absorbing plate can absorb excess light, thereby making the image clearer. On the whole, the invention can retain the function of the original glass wall, further has the double-sided projection imaging function, and the formed image is clear, thereby improving the competitiveness and practicability of the product.

1‧‧‧Projector

11‧‧‧Image

2‧‧‧ imaging unit

21‧‧‧ glass layer

211‧‧‧ side surface

22‧‧‧Glued layer

221‧‧ ‧ glued surface

23‧‧‧ scattering particles

3‧‧‧Light absorption unit

31‧‧‧Lighting layer

32‧‧‧Absorbers

321‧‧‧ board

4‧‧‧Front frame

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of a preferred embodiment of the projection glass module of the present invention; An exploded view of an example; and Figure 3 is a combined cross-sectional view of the preferred embodiment.

Referring to Figures 1-3, a preferred embodiment of the projection glass module of the present invention can be projected by a projector 1 to form an image 11. In the embodiment, the image 11 is an example of a flower pattern, but the implementation is not limited thereto. For example, the image may be a text, an advertisement, an arbitrary picture, or a movie, as long as the projector 1 can project information. . In addition, the embodiment can be used as a glass wall of a building or a glass window of a vehicle, and can even replace the traditional curtain type projection screen. The projection glass module comprises: an imaging unit 2, four light absorbing units 3, and an outer frame 4.

The image forming unit 2 of the present embodiment includes two glass layers 21 spaced apart from each other, a glue layer 22 between the glass layers 21, and a plurality of scattering particles 23 blended in the glue layer 22. The glass layer 21 and the glue layer 22 have four side surfaces 211 connected to each other. The glue layer 22 has a glued surface 221 that is spaced apart from each other and that connects the side surfaces 211 and faces the glass layers 21, respectively.

In the embodiment, the overall transmittance of the imaging unit 2 is 50% to 99%. The glass layers 21 are all made of a transparent glass material, so that the light projected by the projector 1 can pass through the glass layers 21. The glue layer 22 is also made of a transparent material, such as vinyl acetate copolymer, thermopolymer polyurethane, polyvinyl butyral or silicone, and has a thickness of 0.05 mm to 2 mm. Preferably, the glue layer The thickness of 22 is 0.3 mm to 1 mm. The scattering particles 23 are optical particles, for example, nanoparticles made of titanium dioxide, which can be used for reflecting light, and have a particle diameter of 200 nm to 1200 nm.

Each light absorbing unit 3 of the present embodiment includes a lighting layer 31 on one side surface 211 of the image forming unit 2, and a light absorbing plate 32 disposed on the outer side surface of the lighting layer 31. In this embodiment, the number of the light absorbing units 3 is not limited to four, and may be two or three when implemented. Of course, the projection glass module may also include only one light absorbing unit 3.

The material of the lighting layer 31 of the present embodiment is an optical glue, so that the light reflected by the scattering particles 23 can pass. Moreover, each of the lighting layers 31 has a refractive index of 1 to 1.5. Preferably, the lighting layer 31 has a refractive index of 1.2 to 1.5, which is relatively close to the refractive index of the glass. Thereby, the imaging unit 2 can be prevented from being reflected back into the imaging unit 2 after the light travels to the corresponding side surface 211 due to the difference in refractive index from the air. That is to say, most of the light reflected by the light-scattering layer 31 by the scattering particles 23 passes through the corresponding side surface 211.

The light absorbing plate 32 of the present embodiment is a solar panel that absorbs light passing through the lighting layer 31 to generate electricity. The solar panels are, for example, copper indium selenide (CIS) solar panels, copper indium gallium selenide (CIGS) solar panels, three-five semiconductor solar panels, and the like. In actual implementation, the power generated by the light absorbing plates 32 can be transmitted to a battery storage (not shown) for use by the projector 1 or for other purposes. If not used for power generation, the light absorbing plate 32 may include a plate body 321 and a black coating (not shown) disposed on the plate body 321 and absorbing light passing through the lighting layer 31. In another embodiment, the light absorbing plate 32 includes only one black plate body 321 . By this design, the light absorbing plate 32 can also absorb light. Of course, the light absorbing unit 3 The light absorbing plate 32 can also be arbitrarily matched with the above various embodiments. Specifically, one solar panel is matched with three black plates 321 or two solar panels with two 321 plates provided with a black coating, and the like. There are no restrictions on the various possible combinations.

The outer frame 4 of the present embodiment is wrapped around the imaging unit 2 and can accommodate the light absorbing unit 3. In actual use, the image forming unit 2 and the light absorbing unit 3 can be fixed to the wall of the building through the outer frame 4 or combined with the vehicle body of the vehicle.

When the embodiment is used, the projector 1 can project light toward one of the glass layers 21, and the light passes through the outer surface of the glass layer 21 and travels toward the glue layer 22. Moreover, since the glue layer 22 can transmit light, the light will continue to pass through the corresponding glue surface 221 . Then, part of the light passing through the bonding surface 221 is reflected by the scattering particles 23, and travels toward the corresponding glass layer 21, and exits the outside, thereby forming the image 11. However, the scattering particles 23 can also reflect part of the light passing through the bonding surface 221 toward the other glass layer 21, thereby forming an inverted image on the other side. In addition, the scattering particles 23 also reflect the excess light toward the side surfaces 211. In the process, the physical properties of the lighting layer 31 (the refractive index is close to the glass) can be used to emit such light. The light of the side surface 211 passes smoothly and is incident on the light absorbing plates 32. Most importantly, since the light absorbing unit 3 can absorb excess light or secondary scattered light, the sharpness and sharpness of the image 11 can be improved.

It is explained in advance that due to the symmetrical design of the imaging unit 2, the projector 1 can project light toward any of the glass layers 21 and The image 11 is formed by being reflected by the scattering particles 23. In addition, the overall transmittance of the imaging unit 2 is 50% to 99%, and the light transmittance is high. Therefore, regardless of which glass layer 21 the projector 1 is projected toward, the persons located on both sides of the imaging unit 2 can Watch the image 11. Moreover, the high transmittance of the imaging unit 2 is utilized, so that the person standing indoors can still view the scenery outside without using the projector 1.

Finally, in the case where the doping concentration of the scattering particles 23 is constant, if the thickness of the bonding layer 22 is too thick, the light projected by the projector 1 may be scattered in the deeper scattering particles 23 . The reflection causes the image 11 to produce a depth of field effect similar to photography, resulting in image blurring. Therefore, the glue layer 22 of the present invention is designed to have a relatively thin thickness (0.3 mm to 1 mm) in order to enhance the sharpness of the image 11 and to make the presentation of the image 11 clearer.

It is worth mentioning that if the light absorbing plate 32 is a solar panel, when used during the day, the light of the sun will also propagate to the light absorbing plates 32 in the same path to generate electricity. Conversely, when the indoor light is turned on at night, the light generated by the electric light can also drive the light absorbing plates 32 to generate electricity.

In summary, the structure of the imaging unit 2 is such that the projector 1 can be reflected on the side of the imaging unit 2, and the scattering particles 23 can reflect the light projected by the projector 1 to form a light. Image 11, so it can achieve the effect of double-sided imaging. Moreover, the light transmittance of the imaging unit 2 is high, so that as long as one side of the imaging unit 2 is projected to form the image 11, the image 11 can be viewed on both sides of the imaging unit 2. In addition, the lighting layer 31 of the light absorbing unit 3 can assist in guiding light to make the light absorbing The plate 32 absorbs excess light, which in turn makes the image 11 sharper. On the other hand, if the light absorbing plate 32 is a solar panel, power can be further generated. This versatile design can enhance the competitiveness and practicability of the product, so it can achieve the purpose of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

1‧‧‧Projector

11‧‧‧Image

2‧‧‧ imaging unit

21‧‧‧ glass layer

4‧‧‧Front frame

Claims (9)

A projection glass module capable of being projected by a projector to form an image, the projection glass module comprising: an imaging unit comprising two glass layers spaced apart from each other for respectively light entering, and a glass layer located on the glass layer a glue layer between the two, and a plurality of scattering particles blended in the glue layer and reflecting light, the glue layer and the glass layer having a plurality of side surfaces connected to each other, and the light projected by the projector can pass a glass layer is injected into the glue layer and reflected by the scattering particles to form the image; and at least one light absorbing unit includes a light beam on one of the surface surfaces that allows the scattering particles to pass through a lighting layer, and a light absorbing plate disposed on an outer side surface of the lighting layer and absorbing light passing through the lighting layer. The projection glass module of claim 1, wherein the imaging unit has a transmittance of 50% to 99%. The projection glass module of claim 1, wherein the bonding layer of the imaging unit has a thickness of 0.05 mm to 2 mm. The projection glass module of claim 1, wherein the light-receiving layer of the light-absorbing unit has a refractive index of 1 to 1.5. The projection glass module according to claim 1, wherein the scattering particles have a particle diameter of 200 nm to 1200 nm. The projection glass module of claim 1, further comprising an outer frame surrounding the imaging unit and accommodating the light absorbing unit. The projection glass module of claim 1, wherein the light absorption plate comprises a plate body and a black coating disposed on the plate body. The projection glass module of claim 1, wherein the light absorption plate comprises a black plate body. The projection glass module of claim 1, wherein the light absorption plate is a solar panel.