CN211293914U - Electronic whiteboard supporting ambient light resistance - Google Patents
Electronic whiteboard supporting ambient light resistance Download PDFInfo
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- CN211293914U CN211293914U CN202020457570.4U CN202020457570U CN211293914U CN 211293914 U CN211293914 U CN 211293914U CN 202020457570 U CN202020457570 U CN 202020457570U CN 211293914 U CN211293914 U CN 211293914U
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Abstract
According to the electronic whiteboard supporting the ambient light resistance, an optical structure layer resisting the ambient light is added on the basis of a common electronic interactive whiteboard, and the optical structure layer can be a black grid structure or a Fresnel structure. By adding the optical layer structure resisting the ambient light, the interference of the ambient light to the projector picture light beams can be greatly reduced, and the contrast and the display effect of the picture are improved.
Description
Technical Field
The utility model relates to an electronic education training equipment field, concretely relates to support whiteboard of anti ambient light.
Background
An electronic whiteboard is a multimedia teaching device installed in a classroom or a hall used for teaching in a school. The interactive electronic whiteboard system can be in information communication with a personal computer, connect an electronic whiteboard to the personal computer, project the content on the personal computer to an electronic whiteboard screen by using a projector, and construct a large-screen interactive collaborative meeting or teaching environment under the support of a special application program.
Infrared electronic whiteboard is a kind of electronic whiteboard that is commonly used. The infrared whiteboard is provided with a pair of pairs of infrared emitters and infrared receivers around the whiteboard, infrared rays between the infrared emitters and the infrared receivers form an infrared ray optical network, the infrared ray optical network covers the surface of the whiteboard, any opaque object can block the infrared rays when contacting the surface of the whiteboard, so that no signal can be received or the signal is weakened, and the touched position can be judged by calculating the strength of the signal and the position of an infrared device. Therefore, the specific positioning pen is used for replacing a mouse to operate on the whiteboard, any application program can be run, and any operation which can be realized by using a keyboard and the mouse on a computer, such as editing, annotating, saving and the like, can be carried out on a file.
However, the surface of the conventional electronic whiteboard adopts a matte white panel without a light-resistant effect, so that the picture is easily interfered by ambient light in the daytime or under strong ambient light, resulting in low picture contrast and poor effect.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a support anti ambient light's whiteboard to reduce ambient light and to whiteboard imaging's interference, improve picture contrast and display effect.
The electronic whiteboard supporting ambient light resistance comprises a backboard, an optical design layer, a transverse infrared transmitter, a transverse infrared receiver, a longitudinal infrared transmitter, a longitudinal infrared receiver, a first transverse frame, a second transverse frame, a first longitudinal frame, a second longitudinal frame, a first arc-shaped corner guard, a second arc-shaped corner guard, a third arc-shaped corner guard and a fourth arc-shaped corner guard;
the back plate and the optical design layer are bonded through an adhesive to form a panel layer;
the transverse infrared transmitter is arranged at the top of the panel layer, the transverse infrared receiver is arranged at the bottom of the panel layer, the longitudinal infrared transmitter is arranged on the first side surface of the panel layer, and the longitudinal infrared receiver is arranged on the second side surface of the panel layer;
the first transverse frame is arranged on one side, away from the panel layer, of the transverse infrared transmitter, and the top of the panel layer is connected with the first transverse frame in a clamping mode; the second transverse frame is arranged on one side, away from the panel layer, of the transverse infrared receiver, and the bottom of the panel layer is connected with the second transverse frame in a clamping mode; the first longitudinal frame is arranged on one side, away from the panel layer, of the longitudinal infrared emitter, and the first side face of the panel layer is connected with the first longitudinal frame in a clamping mode; the second longitudinal frame is arranged on one side, away from the panel layer, of the longitudinal infrared receiver, and the second side face of the panel layer is connected with the second longitudinal frame in a clamping mode;
the first transverse frame and the first longitudinal frame are connected through the first arc-shaped corner protector; the first longitudinal frame and the second transverse frame are connected through the second arc-shaped corner protector; the second transverse frame and the second longitudinal frame are connected through the third arc-shaped corner protector; the second longitudinal frame and the first transverse frame are connected through the fourth arc-shaped corner protector;
the optical design layer comprises a black grid layer or a Fresnel layer;
the black grid layer is arranged on the surface of the back plate, and a black grid structure is arranged on the surface of the black grid layer;
the Fresnel layer is arranged on the surface of one side, deviating from the back plate, of the black grid layer, and a Fresnel structure is arranged on the surface of the Fresnel layer.
Preferably, the optical design layer further comprises:
a light absorbing layer and a reflective polarization selection layer; the light absorption layer is arranged on the surface of the Fresnel layer; the reflection type polarization selection layer is arranged on one side surface of the light absorption layer, which is far away from the Fresnel layer, and is used for reflecting the first polarization light beam and transmitting other polarization light beams.
Preferably, the optical design layer further comprises a quarter-wave plate and a mirror; the reflector is arranged between the Fresnel layer and the light absorption layer; the quarter wave plate is arranged between the reflecting mirror and the light absorption layer.
Preferably, the mirror and the quarter wave plate are bonded by an adhesive glue layer; the quarter-wave plate and the light absorption layer are bonded through an adhesive glue layer.
Preferably, the adhesive glue layer is polyimide.
Preferably, a side of the reflective polarization selection layer facing away from the light absorbing layer is engraved with a scattering structure.
Preferably, the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are arranged in a rectangular shape, and the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are all members made of aluminum alloy materials.
Preferably, the first arc-shaped angle bead, the second arc-shaped angle bead, the third arc-shaped angle bead and the fourth arc-shaped angle bead are the same in size and shape, and the first arc-shaped angle bead, the second arc-shaped angle bead, the third arc-shaped angle bead and the fourth arc-shaped angle bead are all members made of plastic materials.
Preferably, the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are provided with heat dissipation holes.
The beneficial effects of the utility model are embodied in:
the optical design layer of the electronic whiteboard disclosed by the application comprises the Fresnel layer and the black grid layer, so that the interference of ambient light on the imaging of the electronic whiteboard can be well reduced, and the picture contrast and the display effect are improved. An optical structure layer for resisting ambient light is added on the basis of a common electronic interactive whiteboard, and the optical structure layer can be a black grid structure or a Fresnel structure. By adding the optical layer structure resisting the ambient light, the interference of the ambient light to the projector picture light beams can be greatly reduced, and the contrast and the display effect of the picture are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is an exploded view of an electronic whiteboard supporting ambient light resistance according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a panel layer of the electronic whiteboard supporting resistance to ambient light shown in fig. 1.
In the figure, 100-electronic whiteboard, 101-backboard, 102-optical design layer, 103-transverse infrared emitter, 104-transverse infrared receiver, 105-longitudinal infrared emitter, 106-longitudinal infrared receiver, 107-first transverse frame, 108-second transverse frame, 109-first longitudinal frame, 110-second longitudinal frame, 111-first arc-shaped corner protector, 112-second arc-shaped corner protector, 113-third arc-shaped corner protector, 114-fourth arc-shaped corner protector, 10210-black grid layer, 12011-fresnel layer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1, the electronic whiteboard 100 supporting resistance to ambient light provided by the present application includes a back plate 101, an optical design layer 102, a transverse infrared emitter 103, a transverse infrared receiver 104, a longitudinal infrared emitter 105, a longitudinal infrared receiver 106, a first transverse frame 107, a second transverse frame 108, a first longitudinal frame 109, a second longitudinal frame 110, a first arc-shaped corner guard 111, a second arc-shaped corner guard 112, a third arc-shaped corner guard 113, and a fourth arc-shaped corner guard 114.
The back sheet 101 and the optical design layer 102 are bonded together with an adhesive to form a panel layer.
The top of the panel layer is provided with a transverse infrared transmitter 103, the bottom of the panel layer is provided with a transverse infrared receiver 104, the first side of the panel layer is provided with a longitudinal infrared transmitter 105, and the second side of the panel layer is provided with a longitudinal infrared receiver 106.
A first transverse frame 107 is arranged on one side, away from the panel layer, of the transverse infrared emitter 103, and the top of the panel layer is connected with the first transverse frame 107 in a clamping mode; a second transverse frame 108 is arranged on one side of the transverse infrared receiver 104, which is far away from the panel layer, and the bottom of the panel layer is connected with the second transverse frame 108 in a clamping manner; a first longitudinal frame 109 is arranged on one side of the longitudinal infrared emitter 105, which is far away from the panel layer, and the first side surface of the panel layer is connected with the first longitudinal frame 109 in a clamping manner; a second longitudinal frame 110 is arranged on one side of the longitudinal infrared receiver 106, which is far away from the panel layer, and the second side surface of the panel layer is connected with the second longitudinal frame 110 in a clamping manner.
The first transverse frame 107 and the first longitudinal frame 109 are connected by a first arc-shaped corner protector 111; the first longitudinal frame 109 and the second transverse frame 108 are connected by a second arc-shaped corner guard 112; the second transverse frame 108 and the second longitudinal frame 110 are connected by a third arc-shaped corner protector 113; the second longitudinal frame 110 and the first transverse frame 107 are connected by a fourth curved corner guard 114.
Preferably, the first transverse frame 107, the second transverse frame 108, the first longitudinal frame 109 and the second longitudinal frame 110 are arranged in a rectangular shape, and the first transverse frame 107, the second transverse frame 108, the first longitudinal frame 109 and the second longitudinal frame 110 are all members made of aluminum alloy.
Preferably, the first arc-shaped corner protector 111, the second arc-shaped corner protector 112, the third arc-shaped corner protector 113 and the fourth arc-shaped corner protector 114 are all the same in size and shape, and the first arc-shaped corner protector 111, the second arc-shaped corner protector 112, the third arc-shaped corner protector 113 and the fourth arc-shaped corner protector 114 are all plastic members.
Preferably, the first transverse frame 107, the second transverse frame 108, the first longitudinal frame 109 and the second longitudinal frame 110 are provided with heat dissipation holes 115. So as to dissipate the heat generated by the infrared transmitter and the infrared receiver during operation.
As shown in fig. 2, the optical design layer 102 includes a black grid layer 10210 or a fresnel layer 12011;
the black gate layer 10210 is arranged on the surface of the backboard, and a black gate structure is arranged on the surface of the black gate layer; the fresnel layer 10211 is disposed on a surface of the black grid layer 10210 facing away from the backplane 101, and a fresnel structure is disposed on the surface of the fresnel layer 10211.
The optical design layer 102 further includes a light absorption layer and a reflective polarization selection layer; the light absorption layer is arranged on the surface of the Fresnel layer 10211; the reflective polarization selection layer is disposed on a surface of the light absorption layer opposite to the fresnel layer 10211, and is configured to reflect the first polarized light beam and transmit the other polarized light beams.
It is understood that since the laser light belongs to polarized light, it is assumed that the transmitted laser light belongs to P-polarized light as shown in the figure. The application provides an electronic whiteboard supporting ambient light resistance, which reflects an image light beam (i.e. P-polarized light) projected by a laser projector through a reflective polarization selection layer for being viewed by a user. Meanwhile, the reflection-type polarization selection layer transmits other polarized light different from the image light beam in the ambient light, such as S polarized light, to the light absorption layer, so that the ambient light reflected to human eyes is greatly reduced, the interference of the ambient light on the imaging of the electronic whiteboard is reduced, and the image contrast and the display effect are improved.
Preferably, the optical design layer 102, further comprises a quarter wave plate and a mirror; a mirror disposed between the Fresnel layer 10211 and the light absorbing layer; and the quarter-wave plate is arranged between the reflecting mirror and the light absorption layer.
Preferably, the reflector and the quarter wave plate are bonded by an adhesive glue layer; the quarter-wave plate and the light absorption layer are bonded through the adhesive glue layer.
Preferably, the adhesive layer is polyimide.
It will be appreciated that light beams that are not absorbed may still be present after other polarizations of ambient light transmitted through the reflective polarization-selective layer pass through the light-absorbing layer. In order to further absorb the ambient light, the application provides an electronic whiteboard supporting resistance to the ambient light, and a quarter-wave plate and a reflecting mirror are further arranged. The polarized light perpendicular to the image light beam in the ambient light, shown in the figure, is S polarized light, which passes through the quarter-wave plate and then becomes circularly polarized light, then passes through the quarter-wave plate again after encountering the mirror and becomes linearly polarized light again as the image light beam, i.e. P polarized light, and the linearly polarized light P will be reflected by the reflective polarization selection layer and absorbed by the light absorption layer again.
Preferably, the side of the reflective polarization selection layer facing away from the light absorption layer is engraved with a scattering structure. So as to scatter the image beam and enlarge the viewing angle of the user.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. The utility model provides a support anti ambient light's whiteboard, includes backplate, optical design layer, horizontal infrared transmitter, horizontal infrared receiver, vertical infrared transmitter, vertical infrared receiver, first horizontal frame, the horizontal frame of second, first vertical frame, the vertical frame of second, first arc angle bead, second arc angle bead, third arc angle bead and fourth arc angle bead, its characterized in that:
the back plate and the optical design layer are bonded through an adhesive to form a panel layer;
the transverse infrared transmitter is arranged at the top of the panel layer, the transverse infrared receiver is arranged at the bottom of the panel layer, the longitudinal infrared transmitter is arranged on the first side surface of the panel layer, and the longitudinal infrared receiver is arranged on the second side surface of the panel layer;
the first transverse frame is arranged on one side, away from the panel layer, of the transverse infrared transmitter, and the top of the panel layer is connected with the first transverse frame in a clamping mode; the second transverse frame is arranged on one side, away from the panel layer, of the transverse infrared receiver, and the bottom of the panel layer is connected with the second transverse frame in a clamping mode; the first longitudinal frame is arranged on one side, away from the panel layer, of the longitudinal infrared emitter, and the first side face of the panel layer is connected with the first longitudinal frame in a clamping mode; the second longitudinal frame is arranged on one side, away from the panel layer, of the longitudinal infrared receiver, and the second side face of the panel layer is connected with the second longitudinal frame in a clamping mode;
the first transverse frame and the first longitudinal frame are connected through the first arc-shaped corner protector; the first longitudinal frame and the second transverse frame are connected through the second arc-shaped corner protector; the second transverse frame and the second longitudinal frame are connected through the third arc-shaped corner protector; the second longitudinal frame and the first transverse frame are connected through the fourth arc-shaped corner protector;
the optical design layer comprises a black grid layer or a Fresnel layer;
the black grid layer is arranged on the surface of the back plate, and a black grid structure is arranged on the surface of the black grid layer;
the Fresnel layer is arranged on the surface of one side, deviating from the back plate, of the black grid layer, and a Fresnel structure is arranged on the surface of the Fresnel layer.
2. An electronic whiteboard supporting resistance to ambient light according to claim 1, wherein: the optical design layer further includes:
a light absorbing layer and a reflective polarization selection layer;
the light absorption layer is arranged on the surface of the Fresnel layer;
the reflection type polarization selection layer is arranged on one side surface of the light absorption layer, which is far away from the Fresnel layer, and is used for reflecting the first polarization light beam and transmitting other polarization light beams.
3. An electronic whiteboard supporting resistance to ambient light according to claim 2, wherein:
the optical design layer further comprises a quarter-wave plate and a reflector;
the reflector is arranged between the Fresnel layer and the light absorption layer;
the quarter wave plate is arranged between the reflecting mirror and the light absorption layer;
the reflector and the quarter-wave plate are bonded through an adhesive glue layer;
the quarter-wave plate and the light absorption layer are bonded through an adhesive glue layer.
4. An electronic whiteboard supporting resistance to ambient light according to claim 3, wherein:
the adhesive glue layer is polyimide.
5. An electronic whiteboard supporting resistance to ambient light according to claim 4, wherein:
and a scattering structure is engraved on the side of the reflection type polarization selection layer, which is far away from the light absorption layer.
6. An electronic whiteboard supporting resistance to ambient light according to any one of claims 1 to 5, wherein:
the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are arranged in a rectangular shape, and the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are all members made of aluminum alloy materials.
7. An electronic whiteboard supporting resistance to ambient light according to any one of claims 1 to 5, wherein:
the size and shape of the first arc-shaped angle bead, the second arc-shaped angle bead, the third arc-shaped angle bead and the fourth arc-shaped angle bead are the same, and the first arc-shaped angle bead, the second arc-shaped angle bead, the third arc-shaped angle bead and the fourth arc-shaped angle bead are all members made of plastic materials.
8. An electronic whiteboard supporting resistance to ambient light according to any one of claims 1 to 5, wherein:
the first transverse frame, the second transverse frame, the first longitudinal frame and the second longitudinal frame are provided with heat dissipation holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020457570.4U CN211293914U (en) | 2020-04-01 | 2020-04-01 | Electronic whiteboard supporting ambient light resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020457570.4U CN211293914U (en) | 2020-04-01 | 2020-04-01 | Electronic whiteboard supporting ambient light resistance |
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| Publication Number | Publication Date |
|---|---|
| CN211293914U true CN211293914U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020457570.4U Active CN211293914U (en) | 2020-04-01 | 2020-04-01 | Electronic whiteboard supporting ambient light resistance |
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| CN (1) | CN211293914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115297310A (en) * | 2022-10-08 | 2022-11-04 | 合肥全色光显科技有限公司 | Full-color laser intelligent education screen system and processing method thereof |
| EP4266096A1 (en) * | 2022-04-18 | 2023-10-25 | Nitto Denko Corporation | Whiteboard film system, whiteboard system, and peeking prevention system |
-
2020
- 2020-04-01 CN CN202020457570.4U patent/CN211293914U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4266096A1 (en) * | 2022-04-18 | 2023-10-25 | Nitto Denko Corporation | Whiteboard film system, whiteboard system, and peeking prevention system |
| CN115297310A (en) * | 2022-10-08 | 2022-11-04 | 合肥全色光显科技有限公司 | Full-color laser intelligent education screen system and processing method thereof |
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Effective date of registration: 20221230 Address after: 511300 Room 306, the third floor, District 5, No. 94, Chuangqiang Road, Ningxi Street, Zengcheng District, Guangzhou, Guangdong Patentee after: Guangzhou Enze Touch Display Technology Co.,Ltd. Address before: 518000 room A201, No.1 Qianwan 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen City, Guangdong Province Patentee before: Shenzhen Gongshi Science and Technology Co.,Ltd. |