TWI844386B - Illuminated apparatus capable of exhibiting multiple mirror images - Google Patents

Abstract

An illuminated apparatus, capable of exhibiting multiple mirror images, includes a transparent substrate, a first partially reflective layer, a second partially reflective layer and at least one light-emitting device. The transparent substrate includes a pattern region formed therein. The first partially reflective layer is formed on an upper surface of the transparent substrate. The second partially reflective layer is formed on a lower surface of the transparent substrate. The at least one light-emitting device is disposed adjacent to a light-incident side of the transparent substrate. The at least one light-emitting device is driven to emit a light into the transparent substrate from the light-incident side. The incident light is repeatedly reflected between the first partial reflective layer and the second partial reflective layer, and finally exits from the first partial reflective layer such that a viewer watches the pattern area and the multiple mirror images associated with the pattern area outside the first partially reflective layer.

Description

Light-emitting device capable of presenting multiple mirror images

The present invention relates to a light emitting device capable of presenting multiple mirror images, and in particular to a light emitting device capable of presenting multiple mirror images and having multiple variations.

The use of light to repeatedly reflect between multiple mirrors to create multiple mirror effects and expand the sense of space is also called the infinity mirror effect. Existing objects use the infinity mirror effect to enhance the three-dimensional sense, visual layering and other aesthetics of the object itself, such as signs and lamps.

However, the structure of the objects capable of presenting multiple mirror images in the prior art is heavy and cannot expand the application of the infinite mirror effect. In addition, the optical effect of the objects capable of presenting multiple mirror images in the prior art has a lot of room for improvement and lacks changes.

Therefore, one technical problem to be solved by the present invention is to provide a light emitting device capable of presenting multiple mirror images. The light emitting device capable of presenting multiple mirror images according to the present invention has a thin and light structure and can be widely applied to a variety of objects. The light emitting device capable of presenting multiple mirror images according to the present invention has a variety of optical effects.

According to the first preferred embodiment of the present invention, the light-emitting device capable of presenting multiple mirror images includes a transparent substrate, a first partial reflective layer, a second partial reflective layer and at least one light-emitting element. The transparent substrate has an upper surface, a lower surface and a light-entering side. The transparent substrate includes a first pattern area. The first pattern area is formed in the transparent substrate. The first partial reflective layer is formed on the upper surface of the transparent substrate. The first reflectivity of the first partial reflective layer is greater than 0% and less than 100%. The second partial reflective layer is formed on the lower surface of the transparent substrate. The second reflectivity of the second partial reflective layer is greater than 0% and less than 100%. At least one light-emitting element is disposed adjacent to the light-entering side of the transparent substrate. At least one light-emitting element is driven to emit light from the light-entering side of the transparent substrate into the transparent substrate. The light entering the transparent substrate is repeatedly reflected between the first partial reflective layer and the second partial reflective layer, and finally emitted from the first partial reflective layer, so that the viewer can see the first pattern area and multiple first mirror images of the first pattern area outside the first partial reflective layer.

In a specific embodiment, the upper surface of the transparent substrate includes a first portion of the surface covering the first pattern area. The lower surface of the transparent substrate includes a second portion of the surface covering the first pattern area. The first portion of the surface can be a first flat surface, a first concave spherical surface, a first convex spherical surface, a first concave aspherical surface, a first convex aspherical surface, a first Fresnel concave curved surface, or a first Fresnel convex curved surface. The second portion of the surface can be a second flat surface, a second concave spherical surface, a second convex spherical surface, a second concave aspherical surface, a second convex aspherical surface, a second Fresnel concave curved surface, or a second Fresnel convex curved surface.

According to a variation of the light-emitting device capable of presenting multiple mirror images of the first preferred embodiment of the present invention, the transparent substrate further includes a second pattern area. The second pattern area is formed in the transparent substrate and is separated from the first pattern area. The upper surface of the transparent substrate includes a third portion of the surface covering the second pattern area. The lower surface of the transparent substrate includes a fourth portion of the surface covering the second pattern area. The second portion of the reflective layer is not formed on the fourth portion of the lower surface of the transparent substrate. The viewer sees the second pattern area outside the first portion of the reflective layer.

In a specific embodiment, the first portion of the reflective layer is not formed on the third portion of the upper surface of the transparent substrate.

In a specific embodiment, the upper surface of the transparent substrate presents a symmetrical pattern. At least one light-emitting element is arranged at a light-incident side of the transparent substrate according to a symmetrical relationship with respect to the symmetrical pattern.

According to the second preferred embodiment of the present invention, the light-emitting device capable of presenting multiple mirror images includes N layers of partial reflection layers, (N-1) layers of transparent substrates, (N-1) groups of light-emitting elements and (N-2) wavelength selective filter layers, wherein N is an integer equal to or greater than 3. The reflectivity of each layer of partial reflection layer is greater than 0% and less than 100%. Each layer of transparent substrate has its own light incident side and includes its own pattern area formed in the layer of transparent substrate. The N layers of partial reflection layers and the (N-1) layers of transparent substrates are stacked in sequence and alternately. The bottommost layer of partial reflection layers among the N layers of partial reflection layers is defined as the first layer of partial reflection layers. The bottommost transparent substrate among the (N-1) layers of transparent substrates is defined as the first transparent substrate. The pattern area within the i-th transparent substrate is defined as the i-th pattern area, where i is an integer index ranging from 1 to (N-1). The (N-1) groups of light-emitting elements correspond to the first layer of transparent substrate to the (N-1)-th layer of transparent substrate in sequence. The i-th group of light-emitting elements is disposed at the light incident side adjacent to the i-th layer of transparent substrate. The (N-1) groups of light-emitting elements are respectively driven to emit (N-1) beams of light. The beam of light emitted by the i-th group of light-emitting elements is defined as the i-th beam of light. The (N-2) wavelength selective filter layers correspond to the first layer of transparent substrate to the (N-2)-th layer of transparent substrate in sequence. The jth wavelength selective filter layer corresponding to the jth transparent substrate is formed between every two adjacent transparent substrates from the jth transparent substrate to the (N-1)th transparent substrate and covers the jth pattern area, wherein j is an integer index ranging from 1 to (N-2). The Nth partial reflective layer is not formed where the (N-2)th wavelength selective filter layer is formed. When the (N-1)th group of light emitting elements is driven to emit the (N-1)th beam of light from the light incident side of the (N-1)th transparent substrate into the (N-1)th transparent substrate, the (N-1)th beam of light is repeatedly reflected between the (N-1)th partial reflective layer and the Nth partial reflective layer, and finally emitted from the Nth partial reflective layer, so that the viewer sees the (N-1)th real image and multiple (N-1)th mirror images of the (N-1)th pattern area outside the Nth partial reflective layer. When the j-th group of light-emitting elements is driven to emit the j-th beam of light from the light incident side of the j-th transparent substrate into the j-th transparent substrate, the j-th wavelength selective filter layer only allows the j-th beam of light to pass through, and the j-th beam of light is repeatedly reflected between the j-th partial reflection layer and the N-th partial reflection layer, and finally emitted from the N-th partial reflection layer, so that the viewer can see the j-th pattern area and multiple j-th mirror images of the j-th pattern area outside the N-th partial reflection layer.

In a specific embodiment, the upper surface of the first transparent substrate presents a symmetrical pattern. The i-th group of light-emitting elements is arranged at a light-incident side adjacent to the i-th transparent substrate according to a symmetrical relationship with respect to the symmetrical pattern.

According to the third preferred embodiment of the present invention, the light-emitting device capable of presenting multiple mirror images includes N partial reflective layers, (N-1) transparent substrates, (N-1) sets of light-emitting elements and (N-2) light-transmitting layers, wherein N is an integer equal to or greater than 3. The reflectivity of each partial reflective layer is greater than 0% and less than 100%. Each transparent substrate has its own light incident side and includes its own pattern area formed in the transparent substrate. The N partial reflective layers and the (N-1) transparent substrates are stacked in sequence and alternately. The bottommost partial reflective layer among the N partial reflective layers is defined as the first partial reflective layer. The bottommost transparent substrate among the (N-1) layers of transparent substrates is defined as the first transparent substrate. The pattern area within the i-th layer of transparent substrate is defined as the i-th pattern area, where i is an integer index ranging from 1 to (N-1). The (N-1) groups of light-emitting elements correspond to the first layer of transparent substrate to the (N-1)-th layer of transparent substrate in sequence. The i-th group of light-emitting elements is arranged at the light incident side adjacent to the i-th layer of transparent substrate. The (N-1) groups of light-emitting elements are respectively driven to emit (N-1) beams of light. The beam of light emitted by the i-th group of light-emitting elements is defined as the i-th beam of light. The (N-2) light-transmitting layers correspond to the first layer of transparent substrate to the (N-2)-th layer of transparent substrate in sequence. The j-th transparent layer corresponding to the j-th transparent substrate is formed between every two adjacent transparent substrates from the j-th transparent substrate to the (N-1)-th transparent substrate and covers the j-th pattern area, where j is an integer index ranging from 1 to (N-2). The N-th partial reflective layer is not formed where the (N-2)-th transparent layer is formed. When the i-th group of light-emitting elements is driven to emit the i-th beam of light from the light incident side of the i-th transparent substrate into the i-th transparent substrate, the i-th light-transmitting layer to the first light-transmitting layer allows the i-th beam of light to pass through, and the i-th beam of light in the k-th transparent substrate is repeatedly reflected between the k-th partial reflective layer and the N-th partial reflective layer, and finally emitted from the N-th partial reflective layer, so that the viewer can see the i-th pattern area and multiple i-th mirror images of the i-th pattern area to the first pattern area and multiple first mirror images of the first pattern area outside the N-th partial reflective layer, where k is an integer index ranging from 1 to i.

In a specific embodiment, the upper surface of the first transparent substrate presents a symmetrical pattern. The i-th group of light-emitting elements is arranged at the light-incident side adjacent to the i-th transparent substrate according to the symmetrical relationship of the symmetrical pattern.

Different from the prior art, the light emitting device capable of presenting multiple mirror images according to the present invention has a thin and light structure and can be widely applied to a variety of objects. The light emitting device capable of presenting multiple mirror images according to the present invention has a variety of optical effects.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the attached drawings.

Please refer to Figures 1 and 2, which schematically depict a light-emitting device 1 capable of presenting multiple mirror images according to a first preferred embodiment of the present invention. Figure 1 schematically depicts a light-emitting device 1 capable of presenting multiple mirror images according to a first preferred embodiment of the present invention in a top view. Figure 2 is a cross-sectional view of the light-emitting device 1 along line A-A in Figure 1.

As shown in FIG. 1 and FIG. 2 , the light-emitting device 1 capable of presenting multiple mirror images according to the first preferred embodiment of the present invention comprises a transparent substrate 10 , a first partial reflective layer 12 , a second partial reflective layer 14 and at least one light-emitting element 16 .

The transparent substrate 10 has an upper surface 102, a lower surface 104 and a light incident side 106. The transparent substrate 10 includes a first pattern area 108. The first pattern area 108 is formed in the transparent substrate 10.

In a specific embodiment, the transparent substrate 10 can be made of polyethylene terephthalate (PET), poly(methyl methacrylate), PMMA, glass, acrylic, silicone, thermoplastic polyurethane (TPU) or other commercial light-conducting polymer materials. The thickness of the transparent substrate 10 can be determined as needed without special restrictions. The transparent substrate 10 can be a solid element or a hollow element filled with air or vacuumed to reduce light attenuation.

The first partial reflective layer 12 is formed on the upper surface 102 of the transparent substrate 10. The first reflectivity of the first partial reflective layer 12 is greater than 0% and less than 100%. The second partial reflective layer 14 is formed on the lower surface 104 of the transparent substrate 10. The second reflectivity of the second partial reflective layer 14 is greater than 0% and less than 100%.

In a specific embodiment, the first partial reflective layer 12 and the second partial reflective layer 14 can be mylar, that is, PET polyester film. The first partial reflective layer 12 and the second partial reflective layer 14 formed of mylar are respectively attached to the upper surface 102 and the lower surface 104 of the transparent substrate 10. The first partial reflective layer 12 and the second partial reflective layer 14 can also be coated on the upper surface 102 and the lower surface 104 of the transparent substrate 10.

At least one light emitting element 16 is disposed adjacent to the light incident side 106 of the transparent substrate 10. The at least one light emitting element 16 is driven to emit light L from the light incident side 106 of the transparent substrate 10 into the transparent substrate 10. The light L incident into the transparent substrate 10 is repeatedly reflected between the first partial reflective layer 12 and the second partial reflective layer 14, and finally emitted from the first partial reflective layer 12, so that the viewer 4 can see the first pattern area 108 and the multiple first mirror images mi of the first pattern area 108 outside the first partial reflective layer 12. It should be noted that in FIG. 2, the multiple first mirror images mi are shown outside the second partial reflective layer 14, indicating that the multiple first mirror images mi are mirror images rather than solid structures.

In a specific embodiment, each light emitting element 16 may be a light emitting diode or an organic light emitting diode, but the present invention is not limited thereto.

As shown in FIG. 1 , in a specific embodiment, the upper surface 102 of the transparent substrate 10 presents a symmetrical pattern. At least one light emitting element 16 is arranged at a light incident side 106 of the transparent substrate 10 according to a symmetrical relationship with respect to the symmetrical pattern. In the example shown in FIG. 1 , the upper surface 102 of the transparent substrate 10 presents a symmetrical shield shape, and at least one light emitting element 16 is arranged at a light incident side 106 of the transparent substrate 10 according to a symmetrical relationship with respect to the shield shape. In another specific embodiment, the upper surface 102 of the transparent substrate 10 presents a symmetrical pattern or an asymmetrical pattern, and at least one light emitting element 16 is arranged at a light incident side 106 of only one side of the transparent substrate 10 whose upper surface 102 presents a symmetrical pattern or an asymmetrical pattern.

As shown in FIG. 2 , the light-emitting device 1 capable of presenting multiple mirror images according to the first preferred embodiment of the present invention further includes a circuit board 17 , and at least one light-emitting element 16 is electrically connected to the circuit board 17 .

In order to change the visual effect of the multiple mirror images, please refer to FIG. 3 and FIG. 4. FIG. 3 is a cross-sectional view of a variation of the light-emitting device 1 capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. FIG. 4 is a cross-sectional view of another variation of the light-emitting device 1 capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. As shown in FIG. 3 and FIG. 4, the upper surface 102 of the transparent substrate 10 includes a first partial surface 1022 covering the first pattern area 108. The lower surface 104 of the transparent substrate 10 includes a second partial surface 1042 covering the first pattern area 108. The first partial surface 1022 can be a first flat surface, a first concave spherical surface, a first convex spherical surface, a first concave aspherical surface, a first convex aspherical surface, a first Fresnel concave curved surface, or a first Fresnel convex curved surface. The second partial surface 1042 may be a second flat surface, a second concave spherical surface, a second convex spherical surface, a second concave aspherical surface, a second convex aspherical surface, a second Fresnel concave arc surface, or a second Fresnel convex arc surface. In the example shown in FIG3 , the first partial surface 1022 is a first flat surface, and the second partial surface 1042 is a second convex spherical surface. The farther the first mirror image mi is from the second partial surface 1042, the larger its size is. In the example shown in FIG4 , the first partial surface 1022 is a first flat surface, and the second partial surface 1042 is a second concave spherical surface. The farther the first mirror image mi is from the second partial surface 1042, the smaller its size is. The components in FIG3 and FIG4 with the same number marks as those in FIG2 have the same or similar structures and functions, and will not be described in detail here. It should be noted that in FIG. 3 and FIG. 4 , the multiple first mirror images mi are shown outside the second partial reflective layer 14 , which indicates that the multiple first mirror images mi are mirror images rather than physical structures.

Please refer to FIG. 5, which is a cross-sectional view of another variation of the light-emitting device 1 capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. As shown in FIG. 5, the transparent substrate 10 further includes a second pattern area 109. The second pattern area 109 is formed in the transparent substrate 10 and is separated from the first pattern area 108. The upper surface 102 of the transparent substrate 10 includes a third partial surface 1024 covering the second pattern area 109. The lower surface 104 of the transparent substrate 10 includes a fourth partial surface 1044 covering the second pattern area 109. The second partial reflective layer 14 is not formed on the fourth partial surface 1044 of the lower surface 104 of the transparent substrate 10, as shown in FIG. 5. The viewer 4 sees the second pattern area 109 outside the first partial reflective layer 12. The components with the same number labels as those in FIG. 2 in FIG. 5 have the same or similar structures and functions, and will not be described in detail here. It should be noted that in FIG. 5 , the multiple first mirror images mi are shown outside the second partial reflective layer 14 , indicating that the multiple first mirror images mi are mirror images rather than physical structures.

In one specific embodiment, the first partial reflective layer 12 is also not formed on the third partial surface 1024 of the upper surface 102 of the transparent substrate 10 (not shown in the figure). In another specific embodiment, the fourth partial surface 1044 of the transparent substrate 10 protrudes outward.

In a specific embodiment, the first pattern area 108 and the second pattern area 109 can be formed on the transparent substrate 10 by a printing process or a laser engraving process. Alternatively, the transparent substrate 10 is formed by combining multiple layers, and the first pattern area 108 and the second pattern area 109 can be formed by forming dots or embedding fluorescent objects in the multiple layers, but the present invention is not limited thereto.

Please refer to Figures 6 to 8, which schematically depict the light-emitting device 2 capable of presenting multiple mirror images according to the second preferred embodiment of the present invention. Figures 6 to 8 are cross-sectional views of the light-emitting device 2 capable of presenting multiple mirror images according to the second preferred embodiment of the present invention in different operating states.

As shown in FIGS. 6 to 8 , the light-emitting device 2 capable of presenting multiple mirror images according to the second preferred embodiment of the present invention comprises N partial reflective layers 20, (N-1) transparent substrates 22, (N-1) sets of light-emitting elements 24, and (N-2) wavelength selective filter layers 26, wherein N is an integer equal to or greater than 3. In the examples shown in FIGS. 6 to 8 , 3 sets of light-emitting elements 24 are shown to represent the (N-1) sets of light-emitting elements 24.

The respective reflectivity of each layer of partial reflection layer 20 is greater than 0% and less than 100%. Each layer of transparent substrate 22 has a respective light incident side 222 and includes a respective pattern area 224 formed in the layer of transparent substrate 22. N layers of partial reflection layers 20 and (N-1) layers of transparent substrates 22 are stacked in sequence and alternately. The bottommost layer of partial reflection layer 20 in the N layers of partial reflection layers 20 is defined as the first layer of partial reflection layer 20. The bottommost layer of transparent substrate 22 in the (N-1) layers of transparent substrates 22 is defined as the first layer of transparent substrate 22. The pattern area 224 in the i-th layer of transparent substrate 22 is defined as the i-th pattern area 224, where i is an integer index ranging from 1 to (N-1).

The (N-1) groups of light-emitting elements 24 correspond to the first layer of transparent substrate 22 to the (N-1)th layer of transparent substrate 22 in sequence. The i-th group of light-emitting elements 24 is disposed at the light-incident side 222 adjacent to the i-th layer of transparent substrate 22. The (N-1) groups of light-emitting elements 24 are respectively driven to emit (N-1) beams of light. The beam of light emitted by the i-th group of light-emitting elements 24 is defined as the i-th beam of light. For example, in the example of three groups of light-emitting elements 24 shown in Figures 6 to 8, the beam of light emitted by the first group of light-emitting elements 24 in Figure 6 is defined as the first beam of light L1. The beam of light emitted by the second group of light-emitting elements 24 in Figure 7 is defined as the second beam of light L2. The beam of light emitted by the third group of light-emitting elements 24 in Figure 8 is defined as the third beam of light L3. In a specific embodiment, the (N-1) light beams can be lights of different colors or lights of the same color.

As shown in FIG. 6 to FIG. 8 , the light-emitting device 2 capable of presenting multiple mirror images according to the second preferred embodiment of the present invention further includes a circuit board 27 , and (N-1) sets of light-emitting elements 24 are electrically connected to the circuit board 27 .

The (N-2)th wavelength selective filter layers 26 correspond to the first transparent substrate 22 to the (N-2)th transparent substrate 22 in sequence. The jth wavelength selective filter layer 26 corresponding to the jth transparent substrate 22 is formed between every two adjacent transparent substrates 22 from the jth transparent substrate 22 to the (N-1)th transparent substrate 22 and covers the jth pattern area 224, wherein j is an integer index ranging from 1 to (N-2). The Nth layer of partial reflective layer 20 is not formed where the (N-2)th wavelength selective filter layer 26 is formed.

When the (N-1)th group of light-emitting elements 24 is driven to emit the (N-1)th beam of light from the light incident side 222 of the (N-1)th transparent substrate 22 into the (N-1)th transparent substrate 22, the (N-1)th beam of light is repeatedly reflected between the (N-1)th partial reflective layer 20 and the Nth partial reflective layer 20, and finally emitted from the Nth partial reflective layer 20, so that the viewer 4 sees the (N-1)th real image and multiple (N-1)th mirror images of the (N-1)th pattern area 224 outside the Nth partial reflective layer 20. When the j-th group of light-emitting elements 24 is driven to emit the j-th beam of light from the light incident side 222 of the j-th transparent substrate 22 into the j-th transparent substrate 22, the j-th wavelength selective filter layer 26 only allows the j-th beam of light to pass through, and the j-th beam of light is repeatedly reflected between the j-th partial reflection layer 20 and the N-th partial reflection layer 20, and finally emitted from the N-th partial reflection layer 20, so that the viewer 4 can see the j-th pattern area 224 and multiple j-th mirror images of the j-th pattern area 224 outside the N-th partial reflection layer 20. For example, as shown in FIG6 , when the first light emitting element 24 emits a first beam of light L1 into the first transparent substrate 22, the viewer 4 sees the first pattern area 224 and multiple first mirror images mi1 of the first pattern area 224 outside the Nth partial reflective layer 20. As shown in FIG7 , when the second light emitting element 24 emits a second beam of light L2 into the second transparent substrate 22, the viewer 4 sees the second pattern area 224 and multiple second mirror images mi2 of the second pattern area 224 outside the Nth partial reflective layer 20. As shown in FIG8 , when the first light emitting element 24 emits the first beam of light L1 into the first transparent substrate 22, the viewer 4 sees the third pattern area 224 and multiple third mirror images mi3 related to the third pattern area 224 outside the Nth partial reflective layer 20. It should be noted that in FIG6 , FIG7 and FIG8 , the multiple first mirror images mi1, the multiple second mirror images mi2 and the multiple third mirror images mi3 are shown in overlapping certain layered structures or outside the first partial reflective layer 20, indicating that the multiple first mirror images mi1, the multiple second mirror images mi2 and the multiple third mirror images mi3 are mirror images rather than solid structures.

In a specific embodiment, the upper surface of the first transparent substrate 22 presents a symmetrical pattern. The i-th group of light emitting elements 24 is arranged adjacent to the light incident side 222 of the i-th transparent substrate 22 according to the symmetrical relationship of the symmetrical pattern.

In another specific embodiment, the upper surface of the first transparent substrate 22 presents a symmetrical pattern or an asymmetrical pattern, and the i-th group of light emitting elements 24 is only arranged at the light incident side edge 222 adjacent to one side of the i-th transparent substrate 22 whose upper surface presents a symmetrical pattern or an asymmetrical pattern.

Please refer to Figures 9 to 11, which schematically depict the light-emitting device 3 capable of presenting multiple mirror images according to the third preferred embodiment of the present invention. Figures 9 to 11 are cross-sectional views of the light-emitting device 3 capable of presenting multiple mirror images according to the third preferred embodiment of the present invention in different operating states.

As shown in FIGS. 9 to 11 , the light-emitting device 3 capable of presenting multiple mirror images according to the third preferred embodiment of the present invention comprises N partial reflective layers 30, (N-1) transparent substrates 32, (N-1) sets of light-emitting elements 34, and (N-2) light-transmitting layers 36, wherein N is an integer equal to or greater than 3. In the examples shown in FIGS. 9 to 11 , 3 sets of light-emitting elements 34 are shown to represent the (N-1) sets of light-emitting elements 34.

The respective reflectivity of each layer of partial reflection layer 30 is greater than 0% and less than 100%. Each layer of transparent substrate 32 has a respective light incident side 322 and includes a respective pattern area 324 formed in the layer of transparent substrate 32. N layers of partial reflection layers 30 and (N-1) layers of transparent substrate 32 are stacked in sequence and alternately. The bottommost layer of partial reflection layer 30 in the N layers of partial reflection layers 30 is defined as the first layer of partial reflection layer 30. The bottommost layer of transparent substrate 32 in the (N-1) layers of transparent substrate 32 is defined as the first layer of transparent substrate 32. The pattern area 324 in the i-th layer of transparent substrate 32 is defined as the i-th pattern area 324, where i is an integer index ranging from 1 to (N-1).

The (N-1) groups of light-emitting elements 34 correspond to the first layer of transparent substrate 32 to the (N-1)th layer of transparent substrate 32 in sequence. The i-th group of light-emitting elements 34 is disposed at the light-incident side 322 adjacent to the i-th layer of transparent substrate 32. The (N-1) groups of light-emitting elements 34 are respectively driven to emit (N-1) beams of light. The beam of light emitted by the i-th group of light-emitting elements 34 is defined as the i-th beam of light. For example, in the example of three groups of light-emitting elements 34 shown in Figures 9 to 11, the beam of light emitted by the first group of light-emitting elements 34 in Figure 9 is defined as the first beam of light L1. The beam of light emitted by the second group of light-emitting elements 34 in Figure 10 is defined as the second beam of light L2. The beam of light emitted by the third group of light-emitting elements 34 in Figure 11 is defined as the third beam of light L3. In a specific embodiment, the (N-1) light beams can be lights of different colors or lights of the same color.

As shown in FIGS. 9 to 11 , the light-emitting device 3 capable of presenting multiple mirror images according to the third preferred embodiment of the present invention further includes a circuit board 37 , and (N-1) sets of light-emitting elements 34 are electrically connected to the circuit board 37 .

The (N-2) light-transmitting layers 36 correspond to the first transparent substrate 32 to the (N-2)th transparent substrate 32 in sequence. The jth light-transmitting layer 36 corresponding to the jth transparent substrate 32 is formed between every two adjacent transparent substrates 32 from the jth transparent substrate 32 to the (N-1)th transparent substrate 32 and covers the jth pattern area 324, wherein j is an integer index ranging from 1 to (N-2). The N-layer partial reflective layer 30 is not formed where the (N-2) light-transmitting layer 36 is formed.

When the i-th light emitting element 34 is driven to emit the i-th light beam from the light incident side 322 of the i-th transparent substrate 32 into the i-th transparent substrate 32, the i-th light-transmitting layer 36 to the first light-transmitting layer 36 allow the i-th light beam to pass through, and the i-th light beam in the k-th transparent substrate 32 is reflected between the k-th partial reflective layer 30 and the N-th partial reflective layer 30. The light is reflected by the Nth partial reflection layer 30, and finally emitted from the Nth partial reflection layer 30, so that the viewer 4 can see the i-th pattern area 324 and the multiple i-th mirror images of the i-th pattern area 324 to the first pattern area 324 and the multiple first mirror images mi1 of the first pattern area 324 outside the Nth partial reflection layer 30, where k is an integer index ranging from 1 to i. For example, as shown in FIG9, when the first group of light-emitting elements 34 emits the first beam of light L1 into the first transparent substrate 22, the viewer 4 can see the first pattern area 324 and the multiple first mirror images mi1 of the first pattern area 324 outside the Nth partial reflection layer 30. As shown in FIG10 , when the second group of light emitting elements 34 emits a second beam of light L2 into the second layer of transparent substrate 32 , the observer 4 sees the second pattern area 324 and multiple second mirror images mi2 related to the second pattern area 324 outside the Nth layer of partial reflective layer 30 , and also sees the first pattern area 324 and multiple first mirror images mi1 related to the first pattern area 324 . As shown in FIG11 , when the first group of light-emitting elements 34 emits a first beam of light L1 into the first layer of transparent substrate 32, the viewer 4 sees the third pattern area 324 and multiple third mirror images mi3 related to the third pattern area 324 outside the Nth layer of partial reflective layer 30, and also sees the second pattern area 324 and multiple second mirror images mi2 related to the second pattern area 324, and also sees the first pattern area 324 and multiple first mirror images mi1 related to the first pattern area 324. It should be noted that in Figures 9, 10 and 11, the multiple first mirror images mi1, the multiple second mirror images mi2 and the multiple third mirror images mi3 are shown in overlapping certain layered structures or outside the first partial reflective layer 30, indicating that the multiple first mirror images mi1, the multiple second mirror images mi2 and the multiple third mirror images mi3 are mirror images rather than solid structures.

In a specific embodiment, the upper surface of the first transparent substrate 32 presents a symmetrical pattern. The i-th group of light emitting elements 34 is arranged adjacent to the light incident side 322 of the i-th transparent substrate 32 according to the symmetrical relationship of the symmetrical pattern.

In another specific embodiment, the upper surface of the first transparent substrate 32 presents a symmetrical pattern or an asymmetrical pattern, and the i-th group of light emitting elements 34 is only arranged at the light incident side edge 322 adjacent to one side of the i-th transparent substrate 32 whose upper surface presents a symmetrical pattern or an asymmetrical pattern.

Through the above detailed description of the present invention, it can be clearly understood that the light emitting device capable of presenting multiple mirror images according to the present invention has a thin and light structure and can be widely applied to a variety of objects. For example, the light emitting device capable of presenting multiple mirror images according to the present invention can be combined with the outer shell of a desktop computer, a laptop computer, etc., and can also be combined with objects such as signs, lamps, cups, etc. The optical effect of the light emitting device capable of presenting multiple mirror images according to the present invention has quite a variety of variations.

The above detailed description of the preferred specific embodiments is intended to more clearly describe the features and spirit of the present invention, but is not intended to limit the scope of the present invention to the preferred specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent application for the present invention. Therefore, the scope of the patent application for the present invention should be interpreted in the broadest sense based on the above description, so as to cover all possible changes and arrangements with equivalents.

1: Light-emitting device capable of presenting multiple mirror images 10: Transparent substrate 102: Upper surface 1022: First partial surface 1024: Third partial surface 104: Lower surface 1042: Second partial surface 1044: Fourth partial surface 106: Light-entering side 108: First pattern area 109: Second pattern area 12: First partial reflective layer 14: Second partial reflective layer 16: Light-emitting element 17: Circuit board L: Light mi: First mirror image 2: Light-emitting device capable of presenting multiple mirror images 20: Partial reflective layer 22: Transparent substrate 222: Light-entering side 224: Pattern area 24: Light-emitting element 26: Wavelength selective filter layer 27: Circuit board L1: First beam of light L2: Second beam of light L3: Third beam of light mi1: First mirror image mi2: Second mirror image mi3: Third mirror image 3: Light-emitting device capable of presenting multiple mirror images 30: Partially reflective layer 32: Transparent substrate 322: Light-entering side 324: Pattern area 34: Light-emitting element 36: Transparent layer 37: Circuit board 4: Viewer

FIG. 1 is a top view of a light-emitting device capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. FIG. 2 is a cross-sectional view of the light-emitting device in FIG. 1 along line A-A. FIG. 3 is a cross-sectional view of a variation of the light-emitting device capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. FIG. 4 is a cross-sectional view of another variation of the light-emitting device capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. FIG. 5 is a cross-sectional view of another variation of the light-emitting device capable of presenting multiple mirror images according to the first preferred embodiment of the present invention. Figures 6 to 8 are cross-sectional views of a light-emitting device capable of presenting multiple mirror images in different operating states according to the second preferred embodiment of the present invention. Figures 9 to 11 are cross-sectional views of a light-emitting device capable of presenting multiple mirror images in different operating states according to the third preferred embodiment of the present invention.

1: A light-emitting device capable of presenting multiple mirror images

10: Transparent substrate

102: Upper surface

1022: First part of the surface

104: Lower surface

1042: Second part surface

106: Light incident side

108: First pattern area

12: The first part of the reflective layer

14: The second reflective layer

16: Light-emitting element

17: Circuit board

L: Light

mi:First image

4: Viewers

Claims (8)

A light-emitting device capable of presenting multiple mirror images comprises: a transparent substrate having an upper surface, a lower surface and a light incident side, the transparent substrate comprising a first pattern area and a second pattern area, the first pattern area being formed in the transparent substrate, the second pattern area being formed in the transparent substrate and separated from the first pattern area, the upper surface comprising a third partial surface covering the second pattern area, the lower surface comprising a fourth partial surface covering the second pattern area; a first partial reflective layer formed on the upper surface of the transparent substrate, a first reflectivity of the first partial reflective layer being greater than 0% and less than 100%; a second partial reflective layer formed on the transparent substrate; On the lower surface of the transparent substrate, a second reflectivity of the second partial reflective layer is greater than 0% and less than 100%, and the second partial reflective layer is not formed on the fourth partial surface of the lower surface of the transparent substrate; and at least one light-emitting element is disposed adjacent to the light-entering side of the transparent substrate, and the at least one light-emitting element is driven to emit a light from the light-entering side into the transparent substrate, and the light is repeatedly reflected between the first partial reflective layer and the second partial reflective layer, and finally emitted from the first partial reflective layer, so that a viewer can see the first pattern area, the second pattern area, and multiple first mirror images of the first pattern area outside the first partial reflective layer. A light-emitting device capable of presenting multiple mirror images as described in claim 1, wherein the upper surface includes a first partial surface covering the first pattern area, and the lower surface includes a second partial surface covering the first pattern area, the first partial surface is selected from one of the group consisting of a first flat surface, a first concave spherical surface, a first convex spherical surface, a first concave aspherical surface, a first convex aspherical surface, a first Fresnel concave curved surface, and a first Fresnel convex curved surface, and the second partial surface is selected from one of the group consisting of a second flat surface, a second concave spherical surface, a second convex spherical surface, a second concave aspherical surface, a second convex aspherical surface, a second Fresnel concave curved surface, and a second Fresnel convex curved surface. The light-emitting device capable of presenting multiple mirror images as described in claim 1, wherein the first partial reflective layer is not formed on the third partial surface of the upper surface of the transparent substrate. The light-emitting device capable of presenting multiple mirror images as described in claim 1, wherein the upper surface presents a symmetrical pattern, and the at least one light-emitting element is arranged at the light-incident side adjacent to the transparent substrate according to a symmetrical relationship with respect to the symmetrical pattern. A light-emitting device capable of presenting multiple mirror images comprises: N layers of partial reflection layers, N being an integer equal to or greater than 3, and each layer of partial reflection layers having a respective reflectivity greater than 0% and less than 100%; (N-1) layers of transparent substrates, each layer of transparent substrates having a respective light incident side and comprising a respective pattern region formed in the layer of transparent substrates, the N layers of partial reflection layers and the (N-1) layers of transparent substrates being stacked in sequence and alternately, wherein a bottommost layer of partial reflection layers among the N layers of partial reflection layers is defined as a first layer of partial reflection layers, and a bottommost layer of transparent substrates among the (N-1) layers of transparent substrates is defined as a first layer of transparent substrates. The invention relates to a method for manufacturing a transparent substrate having a light emitting device and a wavelength selective filter layer, wherein the pattern area in the i-th transparent substrate is defined as the i-th pattern area, i is an integer index ranging from 1 to (N-1); (N-1) groups of light emitting elements correspond to the first transparent substrate to the (N-1)-th transparent substrate in sequence, the i-th group of light emitting elements is arranged at the light incident side adjacent to the i-th transparent substrate, the (N-1) groups of light emitting elements are respectively driven to emit (N-1) beams of light, and the beam of light emitted by the i-th group of light emitting elements is defined as the i-th beam of light; and (N-2) wavelength selective filter layers correspond to the first transparent substrate to the (N-2)-th transparent substrate in sequence, and the (N-2)-th group of light emitting elements corresponds to the j-th transparent substrate. The j-th wavelength selective filter layer is formed between every two adjacent transparent substrates from the j-th transparent substrate to the (N-1)-th transparent substrate and covers the j-th pattern area, j is an integer index ranging from 1 to (N-2), and the N-th partial reflective layer is not formed at the location where the (N-2)-th wavelength selective filter layer is formed, wherein when the (N-1)-th group of light-emitting elements is driven to emit the (N-1)-th beam of light from the light incident side of the (N-1)-th transparent substrate into the (N-1)-th transparent substrate, the (N-1)-th beam of light is repeatedly reflected between the (N-1)-th partial reflective layer and the N-th partial reflective layer, and finally is emitted from the N-th partial reflective layer. The jth partial reflective layer emits light, so that a viewer outside the Nth partial reflective layer sees the (N-1)th real image and multiple (N-1)th mirror images of the (N-1)th pattern area. When the jth light-emitting element is driven to emit the jth beam of light from the light-incident side of the jth transparent substrate into the jth transparent substrate, the jth wavelength selective filter layer only allows the jth beam of light to pass through. The jth beam of light is repeatedly reflected between the jth partial reflective layer and the Nth partial reflective layer, and finally emitted from the Nth partial reflective layer, so that the viewer outside the Nth partial reflective layer sees the jth pattern area and multiple jth mirror images of the jth pattern area. A light-emitting device capable of presenting multiple mirror images as described in claim 5, wherein an upper surface of a first transparent substrate presents a symmetrical pattern, and the i-th group of light-emitting elements is arranged at the light-incident side adjacent to the i-th transparent substrate according to a symmetrical relationship with respect to the symmetrical pattern. A light-emitting device capable of presenting multiple mirror images, comprising: N layers of partial reflection layers, N being an integer equal to or greater than 3, each layer of partial reflection layers having a respective reflectivity greater than 0% and less than 100%; (N-1) layers of transparent substrates, each layer of transparent substrates having a respective light incident side and comprising a respective pattern region formed in the layer of transparent substrates, the N layers of partial reflection layers and the (N-1) layers of transparent substrates being stacked in sequence and alternately, wherein a bottommost layer of partial reflection layers among the N layers of partial reflection layers is defined as a first layer of partial reflection layers , the bottommost transparent substrate in the (N-1) layers of transparent substrates is defined as the first layer of transparent substrate, the pattern area in the i-th layer of transparent substrate is defined as the i-th pattern area, i is an integer index ranging from 1 to (N-1); (N-1) groups of light-emitting elements correspond to the first layer of transparent substrate to the (N-1)-th layer of transparent substrate in sequence, the i-th group of light-emitting elements is arranged at the light incident side adjacent to the i-th layer of transparent substrate, the (N-1) groups of light-emitting elements are respectively driven to emit (N-1) beams of light, and the light emitted by the i-th group of light-emitting elements The beam of light is defined as the i-th beam of light; and the (N-2)-th light-transmitting layers correspond to the first transparent substrate to the (N-2)-th transparent substrate in sequence, the j-th light-transmitting layer corresponding to the j-th transparent substrate is formed between every two adjacent transparent substrates from the j-th transparent substrate to the (N-1)-th transparent substrate and covers the j-th pattern area, j is an integer index ranging from 1 to (N-2), the N-th partial reflective layer is not formed at the (N-2)-th light-transmitting layer, wherein when the i-th set of light-emitting elements is driven to emit the i-th beam of light from the i-th transparent substrate When the light incident side of the transparent substrate enters the i-th transparent substrate, the i-th light-transmitting layer to the first light-transmitting layer allows the i-th light beam to pass through, and the i-th light beam in the k-th transparent substrate is repeatedly reflected between the k-th partial reflective layer and the N-th partial reflective layer, and finally emitted from the N-th partial reflective layer, so that a viewer can see the i-th pattern area and multiple i-th mirror images of the i-th pattern area to the first pattern area and multiple first mirror images of the first pattern area outside the N-th partial reflective layer, k is an integer index ranging from 1 to i. A light-emitting device capable of presenting multiple mirror images as described in claim 7, wherein an upper surface of a first transparent substrate presents a symmetrical pattern, and the i-th group of light-emitting elements is arranged at the light-incident side adjacent to the i-th transparent substrate according to a symmetrical relationship with respect to the symmetrical pattern.