CN215341008U - Keyboard and electronic equipment - Google Patents
Keyboard and electronic equipment Download PDFInfo
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- CN215341008U CN215341008U CN202121072356.8U CN202121072356U CN215341008U CN 215341008 U CN215341008 U CN 215341008U CN 202121072356 U CN202121072356 U CN 202121072356U CN 215341008 U CN215341008 U CN 215341008U
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Abstract
The utility model relates to the technical field of electronic equipment, and particularly discloses a keyboard and electronic equipment. The keyboard provided by the utility model comprises a holographic optical element, an illumination light source and a detection piece, the real image of the keyboard is presented in the air without depending on any medium based on the holographic imaging technology, the keyboard is the real image, a user can directly perform key operation in the space above the holographic optical element, the completely non-touch operation is realized, the traditional keyboard, keys and the like are replaced, the bacterial and viral infection generated when a human body is in contact with the surface of the keyboard is effectively isolated, and the safe interaction experience of zero cross infection is provided; the real keyboard image is presented in the air by adopting the holographic imaging technology and can only be seen within a certain angle range, so that the operation content is protected from being peeped, and the personal privacy is protected; in addition, the space utilization rate of the aerial keyboard real image realized based on the holographic imaging technology is high, the universality is realized, the production process is simplified, the production cost is low, and the batch application can be realized.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a keyboard and an electronic device.
Background
In the prior art, in order to effectively isolate bacterial and viral infections generated when a human body is in contact with the surface of an object and provide safe interaction experience of zero cross infection, an air non-contact type operation keyboard is provided to replace a traditional keyboard, a key and other input modes. The non-contact operation keyboard on the market at present mainly adopts a negative refractive index lens to realize aerial imaging, wherein an image source is used for displaying keys of the non-contact operation keyboard, the negative refractive index lens performs mirror imaging on the image source, imaging is performed at a position symmetrical to the negative refractive index lens, then an object in an operation area is detected through a sensor, the corresponding relation between the image source and the keys is determined, and the object is sent to a main control system to realize aerial operation.
However, the non-contact operation keyboard based on the negative refractive index lens mainly has the following defects: 1) the image source and the aerial real image form a mirror image relation with a certain angle about the negative refractive index lens, the minimum edge length of the negative refractive index lens is 1.732 times of the size of the displayed image source, and therefore the whole structure is large, and the space utilization rate is low; 2) due to the mirror image relationship between the image source and the real image, the non-contact operation keyboard needs to make large internal structure adjustment on the matching problem with other products, and the non-contact operation keyboard does not have the universality of various products; 3) the size of the aerial image is smaller than that of the negative refractive index lens, and the processing process condition of the negative refractive index lens is harsh, the process stability is poor, and the processing equipment is limited, so that the negative refractive index lens is expensive and difficult to realize batch application; 4) the negative refractive index lens has low light energy utilization efficiency, so that the image source is required to have high brightness, and the requirement of the high-brightness image source also becomes one of the technical bottlenecks.
Therefore, it is desirable to provide a keyboard to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a keyboard and an electronic device, which are easy to realize, high in space utilization rate, universal, relatively low in cost and capable of realizing completely contactless operation.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a keyboard, comprising:
a hologram optical element on which information of a keyboard is recorded;
the illumination light source is arranged on one side of the holographic optical element, the light energy emitted by the illumination light source can form a keyboard real image in the air through the holographic optical element, and the keyboard real image is arranged above the other side of the holographic optical element;
and the detection piece is used for acquiring the position information of the operated keys on the real keyboard image.
Preferably, the holographic optical element further comprises a reflector for reflecting the light emitted by the illumination light source onto the holographic optical element.
Preferably, the position of the mirror is adjustable.
Preferably, the real keyboard image is placed 10mm-100mm in the air above the other side of the holographic optical element.
Preferably, the detecting member includes an optical sensor, a detecting end of the optical sensor is disposed at a front side of the keyboard real image, and the detecting end of the optical sensor is coplanar with the keyboard real image.
Preferably, the optical sensor is an infrared sensor.
Preferably, the illumination light source is a laser light source.
Preferably, the holographic optical element is arranged at the mounting hole, the illumination light source is arranged in the shell, and the detection piece is arranged outside the shell.
Preferably, the illumination light source and the detection piece are both electrically connected to a controller, and the controller is configured to receive and process position information of the operated key on the real keyboard image collected by the detection piece.
An electronic device comprising the keyboard of any of the above.
The utility model has the beneficial effects that:
the utility model is realized based on the holographic imaging technology without depending on any medium to present the keyboard real image in the air, a user can directly perform key operation in the space above the holographic optical element, the complete non-touch operation is realized, and the keyboard is the real image, replaces the traditional keyboard, keys and the like, effectively isolates the bacterial and viral infection generated when a human body contacts with the surface of the keyboard, and provides the safe interaction experience of zero cross infection; the keyboard real image formed by adopting the holographic imaging technology can be only visible within a certain angle range, the operation content is protected from being peeped, and the individual privacy is protected; when a user operates the keys of the real image of the keyboard, light projected onto the holographic optical element by the illumination light source is not shielded, so that imaging is not influenced, and the user can smoothly operate the keys; in addition, the non-contact keyboard based on the holographic imaging technology has the advantages of high space utilization rate, universality, simplified production process, low production cost and capability of realizing batch application.
Drawings
Fig. 1 is a schematic structural diagram of a keyboard according to an embodiment of the present invention.
In the figure:
1. an illumination light source; 2. a mirror; 3. a holographic optical element; 4. a keyboard real image; 5. a detection member; 6. a controller; 7. a housing.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment provides a keyboard and electronic equipment to solve the technical problems that in the prior art, a non-contact operation keyboard based on a negative refractive index lens is difficult to realize, the space utilization rate is low, the universality is not realized, the production cost is relatively high, and batch application cannot be realized.
Specifically, as shown in fig. 1, the keyboard provided by the present embodiment includes a holographic optical element 3, an illumination light source 1 and a detection element 5, information of the keyboard is recorded on the holographic optical element 3, the illumination light source 1 is disposed on one side of the holographic optical element 3, light emitted by the illumination light source 1 can form a keyboard real image 4 in the air through the holographic optical element 3, and the keyboard real image 4 is disposed above the other side of the holographic optical element 3. The detecting element 5 is used for collecting the position information of the operated key on the real keyboard image 4.
The keyboard real image 4 is presented in the air without depending on any medium based on the holographic imaging technology, a user can directly perform key operation in the space above the holographic optical element 3, the touch-free operation is realized, the keyboard is the real image, the traditional keyboard, keys and the like are replaced, the bacterial and viral infection generated when a human body is in contact with the surface of the keyboard is effectively isolated, and the safe interaction experience of zero cross infection is provided; the real keyboard image 4 formed by adopting the holographic imaging technology can only be visible within a certain angle range, thereby protecting the operation contents from being peeped and protecting the privacy of individuals; when a user operates the keys of the real keyboard image 4, light projected onto the holographic optical element 3 by the illumination light source is not shielded, so that imaging is not influenced, and the user can smoothly operate the keys; in addition, the non-contact keyboard based on the holographic imaging technology has the advantages of high space utilization rate, universality, simplified production process, low production cost and capability of realizing batch application.
In this embodiment, the keyboard further includes a light-tight casing 7, a mounting hole is formed on the surface of the casing 7, the holographic optical element 3 is mounted at the mounting hole, the illumination light source 1 is disposed in the casing 7, and the detection element 5 is mounted outside the casing 7. The lightproof shell 7 is arranged, so that the influence of external light on the normal projection of the illumination light source 1 caused by the fact that the external light enters the shell 7 is avoided, and the imaging definition of the real keyboard image 4 is improved. Further, the housing 7 is made of a light-shielding material, or the housing 7 is made of a metal material, and the inner side wall of the housing 7 is oxidized to be black, so that stray light is eliminated, and the influence of the stray light on the inside of the housing 7 is reduced.
The keyboard provided by the present embodiment further includes a reflecting mirror 2, and the reflecting mirror 2 is used for reflecting the light emitted from the illumination light source 1 onto the holographic optical element 3. The reflector 2 can change the propagation path of the light emitted by the illumination light source 1 to reduce the volume of the whole keyboard. In this embodiment, the reflector 2 is provided with one, and the light emitted from the illumination light source 1 can be projected onto the hologram optical element 3 by only once turning the light according to the installation position of the illumination light source 1. Of course, the number of the reflectors 2 may be more than one according to actual installation requirements, and is not particularly limited herein.
Further, the position of the reflector 2 can be adjusted so as to adjust the angle of the light emitted by the illumination light source 1 to the holographic optical element 3, so that the light emitted by the illumination light source 1 can be reflected according to the incident angle of the light when the holographic optical element 3 records the keyboard holographic information, thereby ensuring that the holographic optical element 3 can reach the highest reflection efficiency and obtaining a clear and bright keyboard real image 4. In this embodiment, the position adjusting structure of the reflector 2 may be a rotating member and a positioning member, the reflector 2 is installed on the rotating member, the rotating member rotates to drive the reflector 2 to rotate, and after the position adjustment is completed, the positioning member fixes the position of the reflector 2. In addition, the rotating member can be adjusted manually, or can be driven to rotate electrically. Since the position adjustment structure of the reflecting mirror 2 is a related art, it is not particularly limited herein.
The reflector 2 is installed in the housing 7 to correspond to the illumination light source 1. The illumination light source 1 is a laser light source having the same wavelength as the wavelength recorded in the hologram optical element 3, and the luminance of the illumination light source 1 can be adjusted according to the external ambient luminance. The reflector 2 is a high-reflection mirror corresponding to the wavelength of the illumination light source 1, so as to improve the utilization rate of the light emitted by the illumination light source 1.
In this embodiment, the holographic optical element 3 includes a holographic optical film and an optical glass substrate, the light intensity and phase information of the keyboard is recorded on the holographic optical film by using the principle of light interference and diffraction, and a large depth of field is used in the recording process, so that a certain spatial distance is provided between the keyboard real image 4 and the holographic optical element 3, so as to present the keyboard real image 4 in the air above the holographic optical element 3. And finally, adhering the holographic optical film to the optical glass substrate. The holographic optical element 3 has functions of recording keyboard information and reproducing keyboard images, and the real keyboard image 4 can be observed only in a certain area range by adopting a holographic imaging technology, so that the operation content is not peeped from an optical angle, and the function of protecting personal privacy is further realized.
The keyboard real image 4 is a real image formed above the holographic optical element 3 after being irradiated by the illumination light source 1, the keyboard real image 4 can be parallel to the plane of the holographic optical element 3, and can also form a certain angle with the plane of the holographic optical element 3, the imaging in the air does not need to be supported by any medium, and the imaging in the vacuum can also be realized. In the present embodiment, the real keyboard image 4 is placed at a position of 10mm to 100mm in the air above the other side of the holographic optical element 3 to implement a completely touchless operation, and the peep-proof angle is-30 ° to +30 °. The distance between the keyboard real image 4 and the holographic optical element 3 is different in the way of making the light path on the holographic optical element 3, and the distance is different, and the way of making the light path is conventional technology, and will not be described in detail here.
In the present embodiment, the detecting member 5 includes an optical sensor, a detecting end of the optical sensor is disposed at the front side of the keyboard real image 4, and the detecting end of the optical sensor is coplanar with the keyboard real image 4, so that the position information of the operated key can be detected. When the real keyboard image 4 is operated, the optical sensor can sense the position information of the operated key, namely the X-axis and Y-axis coordinates of the operated key, so as to acquire the related information.
Furthermore, the optical sensor is an infrared sensor, the position information of the key can be determined by acquiring the position and the distance of the infrared ray emitted by the shielding infrared sensor, and the infrared sensor has good use stability.
The outside of shell 7 is connected with the support, and the support sets up in the place ahead of keyboard real image 4, and infrared sensor installs on the support to make infrared sensor's sense terminal and keyboard real image 4 coplane, and be convenient for install infrared sensor. In addition, the installation position of the infrared sensor is adjustable, so that equipment can be conveniently debugged, and the detection precision is improved.
In this embodiment, the keyboard further includes a controller 6, the illumination light source 1 and the detection element 5 are both electrically connected to the controller 6, and the controller 6 is configured to receive and process position information of the operated key on the real keyboard image 4 collected by the detection element 5. The controller 6 CAN adopt the ARM chip as the core element, and the information transmission who obtains is given controller 6 to the real-time scanning of detection piece 5, and controller 6 is handled according to the information of receiving, and the generation is according to the key code, will press key code information transmission for the host computer through buses such as RS485, 422 or CAN. Since the connection circuit of the controller 6 with the illumination light source 1 and the detection member 5 is conventional technology, it will not be described in detail here.
When the keyboard provided by the embodiment is used, light emitted by the illumination light source 1 is reflected by the reflector 2 and then irradiates the holographic optical element 3 at a certain angle, a real keyboard image 4 is formed in the air above the holographic optical element 3, and when a user operates the real keyboard image 4, the detection piece 5 collects position information of an operated key and transmits the position information to the controller 6 for processing, so that key operation at a corresponding position is realized.
The embodiment also provides electronic equipment comprising the keyboard. The electronic equipment can be elevator operation panel, ATM machine, self-service ticket machine, self-service registration machine, self-service ordering machine, no touch operating room entrance guard and other public equipment, can be widely applied to public occasions with larger people flow, such as hospitals, banks, railway stations, airports and the like, replaces traditional keyboards, keys and the like, realizes non-contact operation, can effectively isolate bacterial and viral infection generated when a human body contacts the surface of the keyboard, and provides the safety interaction experience of zero-crossing infection.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A keyboard, comprising:
a hologram optical element (3), wherein information of a keyboard is recorded on the hologram optical element (3);
the illumination light source (1) is arranged on one side of the holographic optical element (3), light emitted by the illumination light source (1) can form a keyboard real image (4) in the air through the holographic optical element (3), and the keyboard real image (4) is arranged above the other side of the holographic optical element (3);
the detection piece (5) is used for collecting position information of operated keys on the real keyboard image (4).
2. Keyboard according to claim 1, further comprising a mirror (2), the mirror (2) being adapted to reflect light emitted by the illumination source (1) onto the holographic optical element (3).
3. A keyboard according to claim 2, characterized in that the position of the mirror (2) is adjustable.
4. The keyboard according to claim 1, wherein the keyboard real image (4) is placed 10-100 mm in the air above the other side of the holographic optical element (3).
5. The keyboard according to claim 1, wherein the detecting member (5) comprises an optical sensor, a detecting end of the optical sensor is disposed at a front side of the keyboard real image (4), and the detecting end of the optical sensor is coplanar with the keyboard real image (4).
6. The keyboard of claim 5, wherein the optical sensor is an infrared sensor.
7. The keyboard according to claim 1, characterized in that the illumination source (1) is a laser source.
8. The keyboard according to claim 1, further comprising a light-tight casing (7), wherein a mounting hole is formed in a surface of the casing (7), the holographic optical element (3) is mounted at the mounting hole, the illumination light source (1) is disposed in the casing (7), and the detecting member (5) is mounted outside the casing (7).
9. The keyboard according to claim 1, wherein the illumination light source (1) and the detection member (5) are electrically connected to a controller (6), and the controller (6) is configured to receive and process position information of operated keys on the real keyboard image (4) collected by the detection member (5).
10. An electronic device, characterized in that it comprises a keyboard according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121072356.8U CN215341008U (en) | 2021-05-19 | 2021-05-19 | Keyboard and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121072356.8U CN215341008U (en) | 2021-05-19 | 2021-05-19 | Keyboard and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN215341008U true CN215341008U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121072356.8U Active CN215341008U (en) | 2021-05-19 | 2021-05-19 | Keyboard and electronic equipment |
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| CN (1) | CN215341008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003073A (en) * | 2023-07-25 | 2023-11-07 | 盈乾家智能科技(武汉)有限公司 | Automatic page turning system of holographic ladder control digital keyboard |
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2021
- 2021-05-19 CN CN202121072356.8U patent/CN215341008U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003073A (en) * | 2023-07-25 | 2023-11-07 | 盈乾家智能科技(武汉)有限公司 | Automatic page turning system of holographic ladder control digital keyboard |
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