CN107493357A - A kind of distance sensing device and mobile terminal - Google Patents
A kind of distance sensing device and mobile terminal Download PDFInfo
- Publication number
- CN107493357A CN107493357A CN201710597347.2A CN201710597347A CN107493357A CN 107493357 A CN107493357 A CN 107493357A CN 201710597347 A CN201710597347 A CN 201710597347A CN 107493357 A CN107493357 A CN 107493357A
- Authority
- CN
- China
- Prior art keywords
- sensing device
- base
- distance sensing
- reflection film
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
Abstract
The invention discloses a kind of distance sensing device, including transmitter, inductor, base, transparent cover plate and anti-reflection film, the base is arranged at intervals with the transparent cover plate, and the anti-reflection film is arranged at the transparent cover plate towards on the first surface of the base；Transmission channel and receiving channel are arranged at intervals with the base, the transmitter, inductor are arranged in base, respectively positioned at one end of the transmission channel and the receiving channel, the transmission channel and the other end of the receiving channel are respectively facing the anti-reflection film so that the electromagnetic wave overwhelming majority that transmitter is launched passes through transparent cover plate.The invention also discloses a kind of mobile terminal.The invention discloses a kind of distance sensing device and mobile terminal, by setting anti-reflection film, reduce distance sensing device due to the internal reflection of electromagnetic wave and caused by erroneous judgement, improve the judgement rate of distance sensing device, improve the usage experience of mobile terminal.
Description
Technical field
The present invention relates to field of mobile terminals, more specifically to a kind of distance sensing device and mobile terminal.
Background technology
Range sensor is called displacement transducer, and range sensor is typically all in the both sides of earpiece either in mobile phone
In receiver groove, so it is easy to its work.When user is answering or called, by mobile phone close to head, Distance-sensing
Device the distance between can be measured arrived to a certain degree after just notification screen background light extinguish, background light is lighted when taking away once again,
Electricity is also more saved in so more convenient user's operation.But it is constrained to its operation principle and there may be situation about much failing,
Such as the problem of due to device, light that range sensor is sent and without the reflection of target object, but directly by interior
The test side for being reflected into range sensor of portion's device, so cause to judge by accident, cause Consumer's Experience bad.
The content of the invention
The technical problems to be solved by the invention are overcome the deficiencies in the prior art, there is provided a kind of reduction internal reflection
Distance sensing device.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
A kind of distance sensing device, including transmitter, inductor, base, transparent cover plate and anti-reflection film, the base and institute
Transparent cover plate interval setting is stated, the anti-reflection film is arranged at the transparent cover plate towards on the first surface of the base；It is described
Transmission channel and receiving channel are arranged at intervals with base, the transmitter, inductor are arranged in base, respectively positioned at described
The other end of one end of transmission channel and the receiving channel, the transmission channel and the receiving channel is respectively facing the increasing
Permeable membrane so that the electromagnetic wave overwhelming majority that transmitter is launched passes through transparent cover plate.
Preferably, the transmission channel, the receiving channel are respectively logical through the first through hole of the base and second
Hole, and the centerline parallel of the center line of the first through hole and second through hole.
Preferably, baffle plate is provided between the transmission channel and the receiving channel, prevents that the electromagnetic wave of transmitter is direct
Into inductor.
Preferably, the thickness of the anti-reflection film is launched a quarter of electromagnetic wavelength by the transmitter.
Preferably, the making material of the anti-reflection film is calcirm-fluoride
Or the making material of the anti-reflection film is magnesium fluoride.
Preferably, the distance sensing device also includes circuit board, and the circuit board is fixed on the base close to institute
State transmitter, one end of the inductor, and the transmitter, the inductor respectively with the circuit board electrical connection.
Preferably, the distance sensing device also includes anti-fingerprint film, and the anti-fingerprint film is arranged at the transparent cover plate
On the upper second surface relative with the first surface, and the anti-fingerprint film and the anti-reflection film face.
Present invention also offers a kind of mobile terminal, including housing and any above-mentioned distance sensing device.
The invention discloses a kind of distance sensing device and mobile terminal, and by setting anti-reflection film, reducing distance perspective should
Device due to electromagnetic wave internal reflection and caused by erroneous judgement, improve the judgement rate of distance sensing device, improve it is mobile eventually
The usage experience at end.
Brief description of the drawings
Fig. 1 is the sectional view of the distance sensing device of the embodiment of the present invention.
Fig. 2 is the fundamental diagram of the distance sensing device of the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
As shown in figure 1, the distance sensing device of the embodiment of the present invention, including transmitter 10, inductor 20, base 30, thoroughly
Bright cover plate 40 and anti-reflection film 50, base 30 are arranged at intervals with transparent cover plate 40, and anti-reflection film 50 is arranged at transparent cover plate 40 bottom of towards
On the first surface of seat 30, transmission channel 31 and receiving channel 32 are arranged at intervals with base 30, transmitter 10, inductor 20 are set
Be placed in base 30, and respectively positioned at transmission channel 31, one end of receiving channel 32, transmission channel 31, receiving channel 32 it is another
One end is respectively facing anti-reflection film 50.Wherein transmitter 10 is used to launch electromagnetic wave, and inductor 20, which is used to receive, passes through external object
The electromagnetic wave of reflection, the setting of anti-reflection film 50 so that the electromagnetic wave overwhelming majority that transmitter 10 is launched have passed through transparent cover plate 40
And external object is reached, the erroneous judgement of inductor 20 will not be caused due to internal reflection electromagnetic wave, improves distance sensing device
Judging nicety rate.
Specifically, transmission channel 31, receiving channel 32 are respectively first through hole, the second through hole set on base 30, the
One through hole, the both ends of the second through hole extend through base 30, and in the center line of the first through hole and second through hole
Heart line is parallel.Transmitter 10, inductor 20 be respectively arranged at first through hole, the second through hole remote transparent cover plate 40 one end,
Wherein opening of the opening of first through hole less than the second through hole, so that the electromagnetic wave of transmitter 10 is more concentrated, inductor
20 can receive more reflection electromagnetic waves.Baffle plate 33 is provided between first through hole, the second through hole, the electricity of transmitter 10 can be prevented
Magnetic wave is directly entered inductor 20.
Specifically, in order to effectively play the effect of anti-reflection film 50, electricity that the thickness of anti-reflection film 50 is launched by transmitter 10
The a quarter of magnetic wave wavelength, electromagnetic wave of such electromagnetic wave by two offside reflections of anti-reflection film 50 interfere cancellation,
Equivalent to electromagnetic wave completely through anti-reflection film 50.As the presently preferred embodiments, transmitter 10 elects infrared pulse sensor as, can send out
The a length of 850nm of ejected wave infrared light.The making material of anti-reflection film 50 is fluorine material, is chosen as calcirm-fluoride or magnesium fluoride.
Further, one layer of anti-fingerprint film 70 is provided with second surface relative with first surface on transparent cover plate 40,
Anti-fingerprint film 70 and the face of anti-reflection film 50, it can so prevent the dry of the electromagnetic wave that greasy dirt and fingerprint launched transmitter 10
Disturb, further improve the judging nicety rate of inductor 20.Wherein, anti-fingerprint film 70 uses fluorine material surface hardened processing (Hard
Coating), it may be such that anti-fingerprint film 70 is permanently effective.
Further, distance sensing device also includes circuit board 60, and circuit board 60 is fixedly installed on base upper close to hair
One end of emitter 10 and inductor 20, and transmitter 10 and inductor 20 are electrically connected in circuit board 60, pass through circuit board 60
On control circuit carry out the work of control transmitter 10 and inductor.
The mobile terminal of the present embodiment includes housing 90 and above-mentioned distance sensing device, wherein, the conduct of transparent cover plate 40
The glass cover-plate of display screen, it is covered in the opening of housing 90, base 30 is installed on the inside of housing 90.
The distance sensing device course of work of the present embodiment is as follows：As shown in Fig. 2 transmitter 10 launches electromagnetic wave, electromagnetism
After ripple is by transmission channel 31, anti-reflection film 50, transparent cover plate 40 and anti-fingerprint film 70 are sequentially passed through, by the anti-of target object 80
After penetrating, electromagnetic wave passes through anti-fingerprint film 70, transparent cover plate 40 and anti-reflection film 50 successively, by reaching inductor after receiving channel 32
20, the control circuit on circuit board 60 can detect electromagnetic wave from the time for being sent to reception, so as to calculate mobile terminal with
The distance of target object.
The invention discloses a kind of distance sensing device and mobile terminal, and by setting anti-reflection film, reducing distance perspective should
Device due to electromagnetic wave internal reflection and caused by erroneous judgement, improve the judgement rate of distance sensing device, improve it is mobile eventually
The usage experience at end.
The embodiment of the present invention is described in detail above, although having show and described some implementations
Example, it will be understood by those skilled in the art that limiting the of the invention of its scope by claim and its equivalent not departing from
In the case of principle and spirit, these embodiments can be modified and perfect, these are changed and improved also should be in the present invention
Protection domain in.
Claims (8)
1. a kind of distance sensing device, it is characterised in that including transmitter (10), inductor (20), base (30), transparent cover plate
(40) it is arranged at intervals with anti-reflection film (50), the base (30) with the transparent cover plate (40), the anti-reflection film (50) is arranged at
The transparent cover plate (40) is towards on the first surface of the base (30)；Transmission channel is arranged at intervals with the base (30)
(31) it is arranged in the base (30), is located at respectively with receiving channel (32), the transmitter (10), the inductor (20)
The transmission channel (31) and one end of the receiving channel (32), the transmission channel (31) and the receiving channel (32)
The other end is respectively facing the anti-reflection film (50).
2. distance sensing device according to claim 1, it is characterised in that the transmission channel (31), described receive are led to
Road (32) is respectively the first through hole and the second through hole through the base (30), and the center line of the first through hole and described
The centerline parallel of second through hole.
3. distance sensing device according to claim 2, it is characterised in that the transmission channel (31) and described receive are led to
Baffle plate (33) is provided between road (32).
4. distance sensing device according to claim 1, it is characterised in that the thickness of the anti-reflection film (50) is the hair
Emitter (10) launches a quarter of electromagnetic wavelength.
5. distance sensing device according to claim 1, it is characterised in that the making material of the anti-reflection film (50) is fluorine
Change calcium or magnesium fluoride.
6. distance sensing device according to claim 1, it is characterised in that also including circuit board (60), the circuit board
(60) it is fixed on the base (30) close to the transmitter (10), one end of the inductor (20), and the transmitter
(10), the inductor (20) electrically connects with the circuit board (60) respectively.
7. according to the distance sensing device described in claim any one of 1-6, it is characterised in that also including anti-fingerprint film (70),
The anti-fingerprint film (70) is arranged on second surface relative with the first surface on the transparent cover plate (40), and described
Anti-fingerprint film (70) is set with the anti-reflection film (50) face.
8. a kind of mobile terminal, it is characterised in that should be filled including the distance perspective described in housing (90) and claim any one of 1-7
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597347.2A CN107493357A (en) | 2017-07-20 | 2017-07-20 | A kind of distance sensing device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597347.2A CN107493357A (en) | 2017-07-20 | 2017-07-20 | A kind of distance sensing device and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107493357A true CN107493357A (en) | 2017-12-19 |
Family
ID=60644610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710597347.2A Pending CN107493357A (en) | 2017-07-20 | 2017-07-20 | A kind of distance sensing device and mobile terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN107493357A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375096A (en) * | 2018-01-26 | 2018-08-07 | 中山百得厨卫有限公司 | A kind of anti-tampering gesture induction device and range hood |
| CN108616616A (en) * | 2018-04-03 | 2018-10-02 | 北京小米移动软件有限公司 | Mobile terminal |
| CN109032433A (en) * | 2018-08-21 | 2018-12-18 | Oppo广东移动通信有限公司 | proximity sensor and electronic device |
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| US20120212890A1 (en) * | 2011-02-22 | 2012-08-23 | Hironari Hoshino | Cover and electronic device |
| CN202548325U (en) * | 2012-03-31 | 2012-11-21 | 深圳天珑移动技术股份有限公司 | Mobile phone distance sensor sealed by shell |
| CN102917091A (en) * | 2012-10-26 | 2013-02-06 | 广东欧珀移动通信有限公司 | Infrared proximity inductor structure for mobile phone and touch-screen smart mobile phone |
| CN103270428A (en) * | 2010-11-19 | 2013-08-28 | 苹果公司 | Proximity sensor arrangement having a cold mirror in a mobile device |
| CN106488100A (en) * | 2016-10-31 | 2017-03-08 | 宇龙计算机通信科技(深圳)有限公司 | A kind of camera structure and preparation method thereof, electronic equipment |
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2017
- 2017-07-20 CN CN201710597347.2A patent/CN107493357A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270428A (en) * | 2010-11-19 | 2013-08-28 | 苹果公司 | Proximity sensor arrangement having a cold mirror in a mobile device |
| US20120212890A1 (en) * | 2011-02-22 | 2012-08-23 | Hironari Hoshino | Cover and electronic device |
| CN202548325U (en) * | 2012-03-31 | 2012-11-21 | 深圳天珑移动技术股份有限公司 | Mobile phone distance sensor sealed by shell |
| CN102917091A (en) * | 2012-10-26 | 2013-02-06 | 广东欧珀移动通信有限公司 | Infrared proximity inductor structure for mobile phone and touch-screen smart mobile phone |
| CN106488100A (en) * | 2016-10-31 | 2017-03-08 | 宇龙计算机通信科技(深圳)有限公司 | A kind of camera structure and preparation method thereof, electronic equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375096A (en) * | 2018-01-26 | 2018-08-07 | 中山百得厨卫有限公司 | A kind of anti-tampering gesture induction device and range hood |
| CN108616616A (en) * | 2018-04-03 | 2018-10-02 | 北京小米移动软件有限公司 | Mobile terminal |
| CN108616616B (en) * | 2018-04-03 | 2021-02-19 | 北京小米移动软件有限公司 | Mobile terminal |
| CN109032433A (en) * | 2018-08-21 | 2018-12-18 | Oppo广东移动通信有限公司 | proximity sensor and electronic device |
| CN109032433B (en) * | 2018-08-21 | 2020-09-25 | Oppo广东移动通信有限公司 | Proximity sensor and electronic device |
| US11366224B2 (en) | 2018-08-21 | 2022-06-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Proximity sensor and electronic device |
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Application publication date: 20171219 |