WO2017124743A1 - 激光测距装置、摄像装置及终端 - Google Patents

激光测距装置、摄像装置及终端 Download PDF

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Publication number
WO2017124743A1
WO2017124743A1 PCT/CN2016/096364 CN2016096364W WO2017124743A1 WO 2017124743 A1 WO2017124743 A1 WO 2017124743A1 CN 2016096364 W CN2016096364 W CN 2016096364W WO 2017124743 A1 WO2017124743 A1 WO 2017124743A1
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WO
WIPO (PCT)
Prior art keywords
light
cover plate
distance measuring
measuring device
laser ranging
Prior art date
Application number
PCT/CN2016/096364
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English (en)
French (fr)
Inventor
黄晓峰
Original Assignee
深圳市金立通信设备有限公司
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Filing date
Publication date
Application filed by 深圳市金立通信设备有限公司 filed Critical 深圳市金立通信设备有限公司
Priority to US15/539,830 priority Critical patent/US20190094360A1/en
Publication of WO2017124743A1 publication Critical patent/WO2017124743A1/zh

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Classifications

    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details

Definitions

  • the present invention relates to the field of optics, and in particular, to a laser ranging device, an imaging device, and a terminal.
  • Near-infrared laser ranging technology can quickly measure the distance from the measured object to the sensor according to the time of flight of the photon.
  • the laser ranging sensor can measure the target distance by transmitting and receiving near-infrared rays, and then by emitting a photon and receiving a photon of a TOF (time of fly).
  • the distance information can be used to speed up the autofocus speed to obtain a better photographing experience.
  • an optical window is usually required to be added to the outer casing of the terminal, and the surface of the optical window is usually closed by a transparent cover plate, and the optical window is closed.
  • the light cover plate enables the light emitter on the laser ranging sensor to emit light onto the object to be measured, and the light is reflected by the object to be measured and reflected to the light receiver through the optical window for receiving to achieve measurement. The purpose of the target distance.
  • the light emitted by the light emitter is emitted into the inside of the casing and reflected to the light receiver, the light is easily crosstalked to the infrared rays, and the result of measuring the target distance is not accurate enough to accelerate the autofocus speed. .
  • a laser ranging device provided by an embodiment of the invention can prevent crosstalk caused by reflected light to infrared rays and ensure the accuracy of the result of measuring the target distance.
  • a first aspect of the present invention provides a laser ranging device, the laser ranging device comprising a casing, a laser ranging sensor and a cover plate, wherein the casing is provided with a light transmission window, and the laser ranging sensor is installed in the In the housing, the laser ranging sensor is provided with a light emitter and a light arranged at intervals a receiver, the light emitter emits a light beam to the object to be measured via the light transmission window, and the light beam is reflected by the object to be measured and transmitted through the light transmission window to the light receiver Receiving, the cover plate is embedded in the light transmission window, and a light shielding member is disposed between the cover plate and the light transmission window.
  • the present invention provides an image pickup apparatus including a camera assembly, a processor, and a laser ranging device as described above, the processor being electrically connected to the camera assembly, the laser ranging The device is electrically connected to the processor, the laser ranging device sends the measurement result to the processor, and the processor feeds back the measurement result to the camera component to enable the camera component to receive The measurement results are taken and the focus is taken.
  • the present invention provides a terminal, the terminal comprising a main board and the laser ranging device according to the first aspect, wherein the main board is installed in a casing of the laser ranging device, the laser The laser ranging sensor of the distance measuring device is electrically connected to the main board.
  • the laser distance measuring device, the image capturing device and the terminal provided by the invention provide a light shielding member between the cover plate and the light transmission window, and the light shielding member is used to block the light emitted from the light emitter to the edge of the cover or the inner surface of the outer casing. Therefore, the light can be directly prevented from being directly reflected to the light receiver through the edge of the cover or the inner surface of the casing for absorption, and the crosstalk caused by the emission and reception of the infrared rays is ensured, and the measurement result of the laser distance measuring sensor for the target distance is ensured. The accuracy.
  • FIG. 1 is a schematic cross-sectional structural view of a laser distance measuring device according to a first embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional structural view of a laser distance measuring device according to a second embodiment of the present invention.
  • Figure 3 is a cross-sectional structural view of the shading member omitted in Figure 2;
  • FIG. 4 is a schematic cross-sectional view showing another structure of a laser distance measuring device according to a second embodiment of the present invention.
  • FIG. 5 is an exploded perspective view showing a cross-sectional structure of a laser distance measuring device according to a third embodiment of the present invention.
  • FIG. 6 is an exploded perspective view showing another cross-sectional structure of a laser distance measuring device according to a third embodiment of the present invention. intention;
  • FIG. 7 is an exploded perspective view showing a cross-sectional structure of a laser distance measuring device according to a fourth embodiment of the present invention.
  • FIG. 1 is a laser ranging device 100 according to a first embodiment of the present invention.
  • the laser ranging device 100 includes a housing 11 , a laser ranging sensor 12 , and a cover plate 13 .
  • the housing 11 is provided with a light-transmitting window 111.
  • the laser ranging sensor 12 is mounted in the housing 11 , and the laser ranging sensor 12 is provided with a light emitter 121 and a light receiver 122 disposed at intervals. .
  • the light emitter 121 emits a light beam to the object to be measured via the light-transmitting window 111, and reflects the light beam through the light-transmitting window 111 to the light receiver 122 via the object to be measured.
  • Receive The cover plate 13 is embedded in the light-transmissive window 111 , and a light shielding member 14 is disposed between the cover plate 13 and the light-transmitting window 111 .
  • the outer casing 11 is a metal casing, and the outer casing 11 may be a casing of the terminal or a casing of the image pickup device.
  • the light-transmissive window 111 is opened on the outer casing 11, and the shape of the light-transmitting window 111 is consistent with the shape of the cover plate 13 to facilitate the installation of the cover plate 13.
  • the light transmission window 111 may be a U-shaped through groove, so that the laser ranging device 100 has a good decorative effect.
  • the outer surface of the outer casing 11 is provided with a circular arc transition at a position where the light-transmitting window 111 is opened, so that the user can have a good comfortable hand feeling when using.
  • the cover plate 13 is made of optical glass material.
  • the cover plate 13 is a square plate or a U-shaped plate.
  • the light emitter 121 emits a light beam through the cover plate 13 and exits through the light transmission window 111 and reaches the object to be measured, and then reflects the light beam through the object to be measured, and passes through the light transmission window.
  • 111 reflects the light beam onto the light receiver 122 via the cover plate 13 and absorbs it, by recording and processing the time elapsed after the light beam is emitted to reach the object to be tested and returned to be received by the light receiver 122, thereby Achieve the purpose of measuring the target distance.
  • the light shielding member 14 is disposed between the cover plate 13 and the light transmission window 111.
  • the light shielding member 14 can be a light shielding gasket, a light shielding sealing ring or a light absorbing adhesive, so that when the cover plate 13 is embedded in the light transmitting window 111, the light shielding member 14 can be pressed against
  • the cover plate 13 is spaced between the light-transmissive window 111. Therefore, when the light emitter 121 emits light to the periphery of the cover plate 13 or the inner wall of the light-transmitting window 111, light can be prevented from directly passing through the cover plate 13 due to the light-shielding effect of the light-shielding member 14.
  • the inner wall of the peripheral edge or the light-transmissive window 111 is reflected on the light receiver 122 for reception to generate crosstalk to the infrared rays.
  • the light-shielding member 14 is provided with a light-shielding gasket, a light-shielding seal ring or a light-absorbing glue, etc., The light-shielding member 14 can also ensure the connection tightness between the cover plate 13 and the light-transmitting window 111, and prevent external dust or water from penetrating into the inside of the outer casing 11 through the light-transmitting window 111, thereby enhancing the The waterproof and dustproof performance of the laser distance measuring device 100.
  • the laser distance measuring device 100 can prevent the light emitter 121 from being emitted to the cover by providing the light shielding member 14 as a light shielding gasket, a light shielding sealing ring or a light absorbing adhesive.
  • the light rays on both ends of the 13 are directly reflected to the light receiver 122 via the both ends of the cover plate 13, thereby avoiding crosstalk of the light receiver 122 when receiving infrared light.
  • the light shielding member 14 has good light shielding performance, the light shielding effect of the light shielding member 14 can be further ensured.
  • the light shielding member 14 since the light shielding member 14 has good waterproof and dustproof performance, it can be large The earth enhances the waterproof and dustproof effect of the laser distance measuring device 100.
  • FIG. 2 to FIG. 4 are schematic structural diagrams of a laser ranging device 200 according to a second embodiment of the present invention.
  • the laser ranging device 200 includes a housing 21, a laser ranging sensor 22 disposed in the housing, and a cover 23 disposed above the laser ranging sensor 22.
  • the housing 21 is provided with a light-transmitting window 211.
  • the cover plate 23 is embedded in the light-transmitting window 211, and the light-shielding member 34 is disposed between the cover plate 23 and the light-transmitting window 211.
  • the laser ranging device 200 provided by the third embodiment of the present invention further includes:
  • the cover plate 23 includes a locking portion 231 disposed on the upper and lower sides and a carrying portion 232.
  • the transparent window 211 is a stepped groove formed on the outer casing 21, and the transparent window 211 includes a first stepped groove 211a. a second stepped groove 211b and a connecting surface 211c connected between the first stepped groove 211a and the second stepped groove 211b.
  • the engaging portion 231 is embedded in the first stepped groove 211a, and the carrying portion 232 is embedded in the second stepped groove 211b.
  • the cover plate 23 is an integrally formed inverted T-shaped structure.
  • the engaging portion 231 is embedded in the first stepped groove 211a, that is, the engaging portion 231 and the first stepped groove 211a may have a gap, or the engaging portion 231 and The first stepped grooves 211a are disposed in a face-to-face manner, that is, seamlessly fitted.
  • the light blocking member 24 may be located in a gap between the groove wall of the first stepped groove 211a and the engaging portion.
  • the light shielding member 24 may be a light shielding gasket, a light shielding sealing ring or a light absorbing glue or the like.
  • the gap between the engaging portion 231 and the first stepped groove 211a is filled by the light blocking member 24 to achieve waterproof and dustproof performance, and can also be adsorbed and emitted to the engaging portion 231 and the first
  • the light between the stepped grooves 211a prevents the light from being reflected to the light receiver of the laser ranging sensor 22.
  • the carrying portion 232 since the carrying portion 232 is embedded in the second stepped groove 211b, the carrying portion 232 and the second stepped groove 211b may be seamlessly connected or have a gap.
  • the light blocking member 24 may be located in a gap between the groove wall of the second stepped groove 211b and the carrying portion 232, Filling a gap between the carrying portion 232 and the second stepped groove 211b, so that the carrying portion 232 and the second stepped groove 211b are connected, and can also be adsorbed and emitted to the carrying portion 232 and Place The light between the second stepped grooves 211b is described.
  • the light shielding member 24 may be a light shielding gasket, a light shielding sealing ring or a light absorbing glue or the like.
  • the bottom of the carrying portion 232 is disposed in parallel with the connecting surface 211c, and a gap is formed between the bottom of the carrying portion 232 and the connecting surface 211c. Therefore, the light blocking member 24 may also be located in the A gap is formed between the bottom of the carrying portion 232 and the connecting surface 211c to fill the gap and adsorb light emitted to the bottom of the gap carrying portion 232 and the connecting surface 211c.
  • FIG. 3 shows that the light shielding member 24 is disposed between the groove wall of the first stepped groove 211a and the engaging portion 231, and between the bearing portion 232 and the second stepped groove 211b.
  • FIG. 4 shows a case where the light blocking member 24 is provided between the bottom of the carrying portion 232 and the connecting surface 211c. That is, the engaging portion 231 and the first stepped groove 211a are seamlessly connected, and the carrying portion 232 and the second stepped groove 211b are also seamlessly connected. In this manner, the light shielding effect between the cover plate 23 and the light-transmitting window 211 is better.
  • the laser distance measuring device 200 provides a stepped slot by providing the light transmitting window 211.
  • the cover plate 23 includes a locking portion 231 and a carrying portion 232 disposed above and below, and the engaging portion 231 is utilized.
  • a first stepped groove 211a embedded in the light-transmissive window 211 the bearing portion 232 is embedded in the second stepped groove 211b of the light-transmitting window 211, and the bottom of the carrying portion 232 is transparent to the through-hole
  • the connecting surface 211c of the light window 211 is disposed in parallel, so that the light blocking member 24 can be respectively disposed between the groove wall of the first stepped groove 211a and the engaging portion 231, between the carrying portion 232 and the second stepped groove 211b, and the carrying portion 232 Between the bottom and the connecting surface 211c, or the light blocking member 24 is simultaneously disposed between the groove wall of the first stepped groove 211a and the engaging portion 231, between the carrying portion 232 and the second stepped groove 211b, and at the bottom of the carrying portion 232 Between the connection surface 211c and the gap between the cover plate 23 and the light-transmitting window 211, the light emitted into the gap can be absorbed to prevent the light beam from being reflected on the light receiver.
  • FIG. 5 is a schematic diagram of a laser ranging device 300 according to a third embodiment of the present invention.
  • the laser ranging device 300 includes a housing 31 , a laser ranging sensor 32 disposed in the housing 31 , and a cover 33 .
  • a light-transmitting window 311 is defined in the outer casing 31.
  • the cover plate 33 is embedded in the light-transmitting window 311, and a light-shielding member 34 is disposed between the cover plate 33 and the light-transmitting window 311.
  • the laser ranging device 300 provided by the third embodiment of the present invention further includes the laser ranging device 100 provided by the first embodiment of the present invention.
  • the light blocking member 34 is an ink film or an oxide film covering the periphery of the cover plate 33.
  • the light emitted to the periphery of the cover plate 33 is blocked by the light blocking property of the ink film or the oxide film, thereby preventing the light from being reflected on the periphery of the cover plate 33.
  • the light shielding member 34 may preferably be a black ink film or a black oxide film, so that the light shielding effect can be further ensured.
  • the light shielding member 34 when the light shielding member 34 is an ink film, the light shielding member 34 may be disposed on the periphery of the cover plate 33 by coating or attaching.
  • the light shielding member 34 When the light shielding member 34 is an oxide film, the light shielding member 34 may be a metal piece or a metal gasket attached to the periphery of the cover plate 33, and then oxidized the metal piece or the metal pad. Thereby, the oxide film is formed.
  • the light shielding member 34 can also be an ink film or an oxide film covering the inner wall of the light transmission window 311 .
  • the light shielding member 34 By covering the light shielding member 34 on the inner wall of the light transmission window 311, light emitted to the inner wall of the light transmission window 311 can be blocked, thereby preventing the light from being performed on the inner wall of the light transmission window 311. reflection.
  • the manner in which the light shielding member 34 is disposed on the inner wall of the light transmission window 311 is the same as the manner in which the light shielding member 34 is disposed on the periphery of the cover plate 33, and details are not described herein again.
  • the cover plate 33 may further include a first light transmitting portion 331 and a second light transmitting portion 332 disposed opposite to the light emitter 321 of the laser ranging sensor 32,
  • the second light transmitting portion 332 is disposed opposite to the light receiver 322 of the laser ranging sensor 32.
  • the light emitter 321 emits the light beam to the object to be measured via the first light transmitting portion 331 , and reflects the light beam and transmits the light beam through the second light transmitting portion 332 via the object to be measured. Reception is performed on the optical receiver 322.
  • the laser distance measuring device 300 can shield the light emitted to the periphery of the cover plate 33 by shielding the light shielding member 34 from the periphery of the cover plate 33, thereby preventing the light from being reflected to
  • the optical receiver of the laser ranging sensor 32 further prevents crosstalk caused by the light, and ensures the accuracy of the measurement result of the laser ranging device 300.
  • the light-shielding member 34 can also facilitate filling a gap between the cover plate 33 and the light-transmitting window 311 to prevent external water. Or the dust enters the inside of the outer casing 31 via the gap, and the waterproof and dustproof performance of the laser distance measuring device 300 is ensured.
  • a laser ranging device 400 includes a housing 41 , a laser ranging sensor 42 disposed in the housing 41 , and a cover 43 .
  • the housing 41 is provided with light transmission.
  • the cover plate 43 is mounted at the light-transmissive window 411 and the cover plate 43 closes the light-transmitting window 411.
  • a light blocking member 44 is disposed between the cover plate 43 and the light transmitting window 411.
  • the laser ranging device 400 provided by the fourth embodiment of the present invention is different from the laser ranging device 100 provided by the second embodiment in that:
  • the outer casing 41 further includes an inner surface 412 facing the laser ranging sensor 42, and the light blocking member 44 is disposed on the inner surface 412.
  • the light shielding member 44 is disposed on the inner surface 412, and the light shielding property of the light shielding member 44 can be used to block the light emitted to the inner surface 412, thereby preventing the light from being reflected to the light.
  • the light shielding member 44 may be a light shielding gasket, a light shielding sealing ring, a light absorbing adhesive, an ink film or an oxide film or the like.
  • the light shielding member 44 can also be disposed at the inner wall of the light transmission window 411 at the same time, so that the inner wall of the light transmission window 411 can be further prevented from reflecting the light while also making the cover plate
  • the connection with the light-transmitting window 411 is closer, which further makes the laser distance measuring device 400 more waterproof and dustproof.
  • the metal material of the outer casing 41 can be used to oxidize and form oxidation on the inner surface 412.
  • the light blocking member 44 can be formed by a layer.
  • the laser distance measuring device 400 can prevent the light at the two positions by providing the light blocking member 44 on the inner surface 412 of the outer casing 41 and the inner wall of the light transmitting window 411. Perform reflections. The accuracy of the ranging result of the laser ranging device 400 is ensured.
  • the present invention also provides an image pickup apparatus (not shown) to which the above-described laser distance measuring device is applied, the image pickup apparatus including a camera assembly (not shown), a processor (not shown), and the above-described laser ranging a sensor, the processor is electrically connected to the camera assembly, the laser ranging device is electrically connected to the processor, and the laser ranging device sends a measurement result to the processor, the processor Feeding the measurement to the camera assembly to cause the camera assembly to receive the Measure the results and focus on shooting.
  • the image pickup apparatus including a camera assembly (not shown), a processor (not shown), and the above-described laser ranging a sensor
  • the processor is electrically connected to the camera assembly
  • the laser ranging device is electrically connected to the processor
  • the laser ranging device sends a measurement result to the processor
  • the processor Feeding the measurement to the camera assembly to cause the camera assembly to receive the Measure the results and focus on shooting.
  • the camera device may be a camera or a monitor or the like.
  • the laser ranging sensor of the laser ranging device emits a light beam
  • the light beam can pass through the light transmission window to the object to be measured, so that the object to be measured reflects the light beam, thereby obtaining a measurement result.
  • the processor achieves the purpose of speeding up the focusing speed of the camera when the camera performs shooting by processing the measurement result and feeding back the measurement result to the camera component, thereby obtaining a better photographing experience. .
  • the present invention further provides a terminal (not shown) to which the laser ranging device is applied, the terminal includes a main board (not shown) and the laser ranging device described above, and the main board is mounted on the The laser ranging sensor of the laser distance measuring device is electrically connected to the main board in the casing of the laser distance measuring device.
  • the terminal may be, but is not limited to, a terminal such as a mobile phone, a notebook computer, or a tablet computer.
  • the laser ranging sensor of the laser ranging device emits a light beam
  • the light beam can pass through the light transmission window to the object to be measured, so that the object to be measured reflects the light beam, thereby obtaining a measurement result.
  • the ranging function of the terminal can be realized.
  • the laser distance measuring device, the image capturing device and the terminal provided by the invention provide a light shielding member between the cover plate and the light transmission window, and the light shielding member is used to block the light emitted from the light emitter to the edge of the cover or the inner surface of the outer casing. Therefore, the light can be directly prevented from being directly reflected to the light receiver through the edge of the cover or the inner surface of the casing for absorption, and the crosstalk caused by the emission and reception of the infrared rays is ensured, and the measurement result of the laser distance measuring sensor for the target distance is ensured. The accuracy.

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Abstract

一种激光测距装置（100）、摄像装置及其终端，包括外壳（11）、激光测距传感器（12）及盖板（13），外壳（11）设透光窗口（111），激光测距传感器（12）安装于透光窗口（111）内，且激光测距传感器（12）内间隔设置的光发射器（121）及光接收器（122），光发射器（121）将光束经由盖板（13）发出至被测物体上，经由被测物体将光束反射并透过盖板（13）至光接收器（122）上进行接收，盖板（13）嵌设于透光窗口（111），并且盖板（13）与透光窗口（111）之间设遮光件（14）。利用该遮光件（14）将光发射器（121）发射至盖板（13）和透光窗口（111）之间的光束遮挡，防止该光束反射至光接收器（122）而对红外线的发射及接收造成的串扰，保证激光测距传感器（12）对于目标距离测量结果的准确性。

Description

激光测距装置、摄像装置及终端
本申请要求于2016年01月18日提交中国专利局，申请号为201610032685.7、发明名称为“激光测距装置、摄像装置及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及光学领域，尤其涉及一种激光测距装置、摄像装置及终端。
背景技术
近红外激光测距技术可以根据光子的飞行时间快速测量被测物体到传感器的距离。而其中的激光测距传感器可通过发射和接收近红外线，然后通过发射光子和接收光子的TOF(time of fly，飞行时间)来测量目标距离。当将该测距技术应用于具有拍照功能的终端，比如手机时，利用该距离信息可用于加快自动聚焦速度，以获得较佳的拍照体验。
目前，由于激光测距传感器通常需要发射和接收近红外线，因此在终端的外壳上通常需要增加一个光学窗口，并且该光学窗口的表面通常采用一片透光盖板将光学窗口封闭，同时利用该透光盖板可使得激光测距传感器上的光发射器能够将光线发出至被测物体上，经由被测物体将该光线反射并透过该光学窗口反射至光接收器上进行接收，以达到测量目标距离的目的。然而，当光发射器发射出的光线发射至外壳内部并反射至光接收器上时，该光线容易对红外线产生串扰，进而导致测量目标距离的结果不够准确，从而无法达到加快自动对焦速度的效果。
发明内容
本发明实施例所提供的一种激光测距装置，可以防止反射光对红外线产生的串扰，保证测量目标距离的结果准确性。
本发明第一方面提供了一种激光测距装置，所述激光测距装置包括外壳、激光测距传感器以及盖板，所述外壳上开设有透光窗口，所述激光测距传感器安装于所述外壳内，所述激光测距传感器内设置有间隔设置的光发射器以及光 接收器，所述光发射器将光束经由所述透光窗口发出至被测物体上，经由所述被测物体将所述光束反射并透过所述透光窗口至所述光接收器上进行接收，所述盖板嵌设于所述透光窗口，并且所述盖板与所述透光窗口之间设置有遮光件。
第二方面，本发明提供了一种摄像装置，所述摄像装置包括摄像头组件、处理器以及如上述的激光测距装置，所述处理器与所述摄像头组件电性连接，所述激光测距装置与所述处理器电性连接，所述激光测距装置将测量结果发送给所述处理器，所述处理器将所述测量结果反馈至所述摄像头组件上，以使所述摄像头组件接收所述测量结果并进行拍摄聚焦。
第三方面，本发明还提供了一种终端，所述终端包括主板以及如上述第一方面所述的激光测距装置，所述主板安装在所述激光测距装置的外壳内，所述激光测距装置的激光测距传感器电性连接于所述主板。
本发明所提供的激光测距装置、摄像装置以及终端，通过在盖板与透光窗口之间设置遮光件，利用该遮光件来遮挡光发射器发射至盖板边缘或者外壳内表面的光线，从而能够防止该光线直接经由该盖板边缘或者外壳内表面直接反射至光接收器上进行吸收，而导致的对红外线的发射以及接收造成的串扰，保证了激光测距传感器对于目标距离的测量结果的准确性。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明第一实施例提供的激光测距装置的剖面结构示意图；
图2是本发明第二实施例提供的激光测距装置的剖面结构示意图；
图3是图2省略遮光件的剖面结构示意图；
图4是本发明第二实施例提供的激光测距装置的另一剖面结构示意图；
图5是本发明第三实施例提供的激光测距装置的剖面结构的分解示意图；
图6是本发明第三实施例提供的激光测距装置的另一剖面结构的分解示 意图；
图7是本发明第四实施例提供的激光测距装置的剖面结构的分解示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
为便于描述，这里可以使用诸如“在…之下”、“在…下面”、“下”、“在…之上”、“上”等空间相对性术语来描述如图中所示的一个元件或特征与另一个(些)元件或特征的关系。可以理解，当一个元件或层被称为在另一元件或层“上”、“连接到”或“耦接到”另一元件或层时，它可以直接在另一元件或层上、直接连接到或耦接到另一元件或层，或者可以存在居间元件或层。
可以理解，这里所用的术语仅是为了描述特定实施例，并非要限制本发明。在这里使用时，除非上下文另有明确表述，否则单数形式“一”和“该”也旨在包括复数形式。进一步地，当在本说明书中使用时，术语“包括”和/或“包含”表明所述特征、整体、步骤、元件和/或组件的存在，但不排除一个或多个其他特征、整体、步骤、元件、组件和/或其组合的存在或增加。说明书后续描述为实施本发明的较佳实施方式，然所述描述乃以说明本发明的一般原则为目的，并非用以限定本发明的范围。本发明的保护范围当视所附权利要求所界定者为准。
请参阅图1，为本发明第一实施例提供的激光测距装置100，所述激光测距装置100包括外壳11、激光测距传感器12以及盖板13。所述外壳11上开设有透光窗口111，所述激光测距传感器12安装于所述外壳11内，并且所述激光测距传感器12内设置有间隔设置的光发射器121以及光接收器122。所述光发射器121将光束经由所述透光窗口111发出至被测物体上，经由所述被测物体将所述光束反射并透过所述透光窗口111至所述光接收器122上进行接收。所述盖板13嵌设于所述透光窗口111，并且所述盖板13与所述透光窗口111之间设置有遮光件14。
本实施例中，所述外壳11为金属壳体，所述外壳11可为终端的外壳或者摄像装置的外壳。所述外壳11上开设有所述透光窗口111，并且所述透光窗口111的形状与所述盖板13的形状一致，以便于所述盖板13的安装。优选地，所述透光窗口111可为U形通槽，从而使得所述激光测距装置100具有良好的外观装饰效果。此外，所述外壳11的外表面开设有所述透光窗口111的位置处为圆弧过渡，以使用户在使用时能够具有良好舒适的手感。
本实施例中，所述盖板13采用光学玻璃材质制成。所述盖板13为方形板或者U形板。所述光发射器121通过所述盖板13将光束发出，并经由所述透光窗口111射出并到达被测物体上，然后经被测物体将所述光束反射，并通过所述透光窗口111将该光束经由盖板13反射至所述光接收器122上，并进行吸收，通过记录并处理该光束发出到达被测物后到返回被所述光接收器122接收所经历的时间，从而实现测定目标距离的目的。
所述遮光件14设于所述盖板13与所述透光窗口111之间。本实施例中，所述遮光件14可为遮光垫片、遮光密封圈或者吸光胶，从而当所述盖板13嵌设于所述透光窗口111时，所述遮光件14能够压紧于所述盖板13与所述透光窗口111之间。因此，当所述光发射器121将光线发射至所述盖板13的周缘或者是透光窗口111的内壁时，由于所述遮光件14的遮光作用，能够防止光线直接经由所述盖板13的周缘或透光窗口111的内壁反射至所述光接收器122上进行接收而对红外线产生串扰；此外，由于所述遮光件14采用遮光垫片、遮光密封圈或者吸光胶等，因此，所述遮光件14还能够保证所述盖板13与所述透光窗口111之间的连接紧密性，防止外界的灰尘或者水等通过所述透光窗口111渗入所述外壳11内部，增强所述激光测距装置100的防水防尘性能。
本发明第一实施例提供的激光测距装置100，通过将设置所述遮光件14为遮光垫片、遮光密封圈或者吸光胶，因此，能够防止所述光发射器121发射至所述盖板13两端上的光线直接经由所述盖板13的两端反射至所述光接收器122上，进而避免对所述光接收器122在接收红外光时进行串扰。此外，由于所述遮光件14具有良好的遮光性能，因此能够进一步保证所述遮光件14的遮光效果。同时，由于所述遮光件14具有良好的防水防尘性能，因此，能够大 大地增强了所述激光测距装置100的防水防尘效果。
请一并参阅图2至图4，为本发明第二实施例提供的激光测距装置200的结构示意图。所述激光测距装置200包括外壳21、设于所述外壳内的激光测距传感器22以及设于所述激光测距传感器22上方的盖板23，所述外壳21上开设有透光窗口211，盖板23嵌设于所述透光窗口211处，并且所述盖板23与所述透光窗口211之间具有遮光件34。
本发明第三实施例提供的激光测距装置200与第一实施例提供的激光测距装置100相比，还具体包括：
所述盖板23包括上下设置的卡接部231以及承载部232，所述透光窗口211为开设于所述外壳21上的阶梯型槽，并且所述透光窗口211包括第一阶梯槽211a、第二阶梯槽211b以及连接于所述第一阶梯槽211a与所述第二阶梯槽211b之间的连接面211c。所述卡接部231嵌设于所述第一阶梯槽211a，所述承载部232嵌设于所述第二阶梯槽211b。
本实施例中，所述盖板23为一体成型的倒T字形结构。所述卡接部231嵌设于所述第一阶梯槽211a内，即，所述卡接部231与所述第一阶梯槽211a之间可具有间隙，或者是，所述卡接部231与所述第一阶梯槽211a之间为面面贴合设置，即无缝配合。当所述卡接部231a与所述第一阶梯槽211a之间具有间隙时，所述遮光件24可位于所述第一阶梯槽211a的槽壁与所述卡接部之间的间隙内，以填充所述间隙。具体地，所述遮光件24可为遮光垫片、遮光密封圈或者吸光胶等。利用所述遮光件24填满所述卡接部231与所述第一阶梯槽211a之间的间隙，达到防水防尘性能的同时，也能够吸附发射至所述卡接部231与所述第一阶梯槽211a之间的光线，进而防止该光线反射至所述激光测距传感器22的光接收器上。
进一步地，由于所述承载部232嵌设于所述第二阶梯槽211b，故而所述承载部232与所述第二阶梯槽211b之间可为无缝贴合连接或者具有间隙。当所述承载部232与所述第二阶梯槽211b之间具有间隙时，所述遮光件24可位于所述第二阶梯槽211b的槽壁与所述承载部232之间的间隙中，以填充所述承载部232与所述第二阶梯槽211b之间的间隙，从而达到使得所述承载部232与所述第二阶梯槽211b连接的同时，也能够吸附发射至所述承载部232与所 述第二阶梯槽211b之间的光线。优选地，所述遮光件24可采用遮光垫片、遮光密封圈或者吸光胶等。
进一步地，所述承载部232的底部与所述连接面211c平行设置，并且所述承载部232的底部与所述连接面211c之间具有间隙，因此，所述遮光件24还可位于所述承载部232的底部与所述连接面211c之间的间隙中，以填充该间隙并吸附发射至该间隙承载部232的底部与连接面211c上的光线。
如图3所示，图3表示的是所述遮光件24同时设于所述第一阶梯槽211a的槽壁与卡接部231之间、承载部232与第二阶梯槽211b之间、承载部232底部与连接面211c之间的情况。此种方式中，所述盖板23与所述透光窗口211之间的遮光效果为最佳。
如图4所示，图4表示的是所述遮光件24设于所述承载部232的底部与所述连接面211c之间的情况。即，所述卡接部231与所述第一阶梯槽211a之间为无缝连接，所述承载部232与所述第二阶梯槽211b之间也为无缝连接。此种方式中，所述盖板23与所述透光窗口211之间的遮光效果较佳。
本发明第二实施例提供的激光测距装置200，通过设置透光窗口211为阶梯型槽，所述盖板23包括上下设置的卡接部231以及承载部232，利用所述卡接部231嵌设于所述透光窗口211的第一阶梯槽211a、所述承载部232嵌设于所述透光窗口211的第二阶梯槽211b，并使得所述承载部232的底部与所述透光窗口211的连接面211c平行设置，从而能够将遮光件24分别设于第一阶梯槽211a的槽壁与卡接部231之间、承载部232与第二阶梯槽211b之间、承载部232底部与连接面211c之间，或者将所述遮光件24同时设于第一阶梯槽211a的槽壁与卡接部231之间、承载部232与第二阶梯槽211b之间、承载部232底部与连接面211c之间，从而能够填充所述盖板23与所述透光窗口211之间的间隙的同时，也能够吸收发射至该间隙内的光线，防止该光束被反射至光接收器上被吸收而对测距造成的干扰，保证了测距的结果准确性。
请参阅图5，为本发明第三实施例提供的激光测距装置300的示意图，所述激光测距装置300包括外壳31、设于所述外壳31内的激光测距传感器32以及盖板33，所述外壳31上开设有透光窗口311，盖板33嵌设于所述透光窗口311，并且所述盖板33与所述透光窗口311之间具有遮光件34。
本发明第三实施例提供的激光测距装置300与本发明第一实施例提供的激光测距装置100相比，还具体包括
所述遮光件34为覆盖在所述盖板33周缘的油墨膜或者氧化膜。利用油墨膜或者氧化膜的遮光特性，将发射至所述盖板33周缘的光线进行遮挡，从而防止该光线在所述盖板33周缘上进行反射。本实施例中，所述遮光件34优选地可为黑色油墨膜或者黑色氧化膜，从而能够进一步保证其遮光效果。具体地，当所述遮光件34为油墨膜时，所述遮光件34可采用涂覆或者贴设的方式设于所述盖板33的周缘。而当所述遮光件34为氧化膜时，所述遮光件34可为贴设于所述盖板33周缘的金属片或者金属垫片，然后在将所述金属片或者金属垫片进行氧化，从而形成该氧化膜。
当然，可以理解的是，如图6所示，所述遮光件34还可为覆盖于所述透光窗口311内壁上的油墨膜或者氧化膜。通过将所述遮光件34覆盖于所述透光窗口311的内壁上，故而能够遮挡发射至所述透光窗口311内壁上的光线，进而防止该光线在所述透光窗口311的内壁上进行反射。此外，在所述透光窗口311内壁上设置所述遮光件34的方式与在所述盖板33周缘上设置所述遮光件34的方式相同，这里不再赘述。
可以理解的是，所述盖板33还可包括第一透光部331以及第二透光部332，所述第一透光部331相对所述激光测距传感器32的光发射器321设置，所述第二透光部332相对所述激光测距传感器32的光接收器322设置。所述光发射器321将所述光束经由所述第一透光部331发出至所述被测物体上，经由所述被测物体将所述光束反射并透过所述第二透光部332至所述光接收器322上进行接收。
本发明第三实施例提供的激光测距装置300，通过将所述遮光件34设于所述盖板33周缘，从而能够将发射至所述盖板33周缘的光线遮挡，防止该光线反射至所述激光测距传感器32的光接收器上，进一步防止了该光线产生的串扰，保证所述激光测距装置300的测量结果的准确性。此外，当所述盖板33嵌设于所述透光窗口311内时，所述遮光件34还可便于填充所述盖板33与所述透光窗口311之间的间隙，防止外部的水或者灰尘经由该间隙进入所述外壳31内部，保证了所述激光测距装置300的防水防尘性能。
请参阅图7，为本发明第四实施例提供的激光测距装置400，包括外壳41、设于所述外壳41内的激光测距传感器42以及盖板43，所述外壳41开设有透光窗口411，所述盖板43安装于所述透光窗口411处并且所述盖板43封闭所述透光窗口411。所述盖板43与所述透光窗口411之间设有遮光件44。
本发明第四实施例提供的激光测距装置400与第二实施例提供的激光测距装置100的不同之处在于：
所述外壳41还包括朝向所述激光测距传感器42的内表面412，所述遮光件44设于所述内表面412上。本实施例中，由于所述外壳41的内表面朝向所述激光测距传感器42设置，因此，当光线发射至所述内表面412上时，也容易存在所述内表面412将该光线反射至激光测距传感器42的光接收器上的情况。因此，在所述内表面412上设有所述遮光件44，利用所述遮光件44的遮光特性，从而能够将发射至所述内表面412上的光线进行遮挡，进而避免该光线反射至光接收器上。优选地，所述遮光件44可为遮光垫片、遮光密封圈、吸光胶、油墨膜或者氧化膜等。
此外，为了进一步保证遮光效果，所述遮光件44还可同时设于所述透光窗口411的内壁处，从而能够进一步防止该透光窗口411内壁反射该光线的同时，也使得所述盖板43与所述透光窗口411的连接更为紧密，进而使得所述激光测距装置400的防水防尘效果更佳。
可以理解的是，当遮光件44为设于所述内表面412以及所述透光窗口411的氧化层时，可利用所述外壳41的金属材质，在所述内表面412上进行氧化形成氧化层，即可形成所述遮光件44。
本发明第四实施例提供的激光测距装置400，通过将所述遮光件44设于所述外壳41的内表面412以及透光窗口411的内壁上，从而能够防止该两个位置处的光线进行反射。确保了所述激光测距装置400的测距结果的准确性。
此外，本发明还提供了一种应用上述激光测距装置的摄像装置(图未示)，所述摄像装置包括摄像头组件(图未示)、处理器(图未示)以及上述的激光测距传感器，所述处理器与所述摄像头组件电性连接，所述激光测距装置与所述处理器电性连接，所述激光测距装置将测量结果发送给所述处理器，所述处理器将所述测量结果反馈至所述摄像头组件上，以使所述摄像头组件接收所述 测量结果并进行拍摄聚焦。
在本发明的实施例中，所述摄像装置可为照相机或监视器等。其中，当所述激光测距装置的激光测距传感器发射光束时，所述光束能够透过所述透光窗口至被测物体上，以实现被测物体将光束反射回来，从而得到测量结果。所述处理器通过处理所述测量结果并将所述测量结果反馈至所述摄像头组件上，从而实现在所述摄像头进行拍摄时加快所述摄像头的聚焦速度的目的，进而获得较佳的拍照体验。
另一方面，本发明还提供了一种应用上述激光测距装置的终端(图未示)，所述终端包括主板(图未示)以及上述的激光测距装置，所述主板安装于所述激光测距装置的外壳内，所述激光测距装置的激光测距传感器电性连接于所述主板。
本实施例中，所述终端可为但并不局限于手机、笔记本电脑、平板电脑等终端。其中，当所述激光测距装置的激光测距传感器发射光束时，所述光束能够透过所述透光窗口至被测物体上，以实现被测物体将光束反射回来，从而得到测量结果，进而能够实现所述终端的测距功能。
本发明所提供的激光测距装置、摄像装置以及终端，通过在盖板与透光窗口之间设置遮光件，利用该遮光件来遮挡光发射器发射至盖板边缘或者外壳内表面的光线，从而能够防止该光线直接经由该盖板边缘或者外壳内表面直接反射至光接收器上进行吸收，而导致的对红外线的发射以及接收造成的串扰，保证了激光测距传感器对于目标距离的测量结果的准确性。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、“一些示例”或类似“第一实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (10)

  1. 一种激光测距装置，其特征在于，所述激光测距装置包括外壳、激光测距传感器以及盖板，所述外壳上开设有透光窗口，所述激光测距传感器安装于所述外壳内，所述激光测距传感器内设置有间隔设置的光发射器以及光接收器，所述光发射器将光束经由所述透光窗口发出至被测物体上，经由所述被测物体将所述光束反射并透过所述透光窗口至所述光接收器上进行接收，所述盖板嵌设于所述透光窗口，并且所述盖板与所述透光窗口之间设置有遮光件。
  2. 根据权利要求1所述的激光测距装置，其特征在于，所述盖板包括上下设置的卡接部和承载部，所述透光窗口为开设于所述外壳上的阶梯型槽，包括第一阶梯槽、第二阶梯槽，以及所述第一阶梯槽与所述第二阶梯槽之间的连接面，所述卡接部嵌设于所述第一阶梯槽，所述承载部嵌设于所述第二阶梯槽，所述承载部的底部与所述连接面平行设置，所述遮光件位于所述承载部的底部与所述连接面之间的间隙中。
  3. 根据权利要求2所述的激光测距装置，其特征在于，还包括，所述遮光件位于所述第一阶梯槽的槽壁与所述卡接部之间的间隙中。
  4. 根据权利要求2所述的激光测距装置，其特征在于，还包括，所述遮光件位于所述第二阶梯槽的槽壁与所述承载部之间的间隙中。
  5. 根据权利要求1所述的激光测距装置，其特征在于，还包括，所述外壳朝向所述激光测距传感器的内表面上设置有所述遮光件。
  6. 根据权利要求1-5任一项所述的激光测距装置，其特征在于，所述遮光件为遮光垫片、遮光密封圈或者吸光胶。
  7. 根据权利要求1-5任一项所述的激光测距装置，其特征在于，所述遮光件为覆盖在所述盖板周缘的油墨膜或者氧化膜。
  8. 根据权利要求1-5任一项所述的激光测距装置，其特征在于，所述遮光件为覆盖在所述透光窗口的内壁上的油墨膜或者氧化膜。
  9. 一种摄像装置，其特征在于，所述摄像装置包括摄像头组件、处理器以及如权利要求1-8任意一项所述的激光测距装置，所述处理器与所述摄像头组件电性连接，所述激光测距装置与所述处理器电性连接，所述激光测距装置 将测量结果发送给所述处理器，所述处理器将所述测量结果反馈至所述摄像头组件上，以使所述摄像头组件接收所述测量结果并进行拍摄聚焦。
  10. 一种终端，其特征在于，所述终端包括主板以及如权利要求1-8任意一项所述的激光测距装置，所述主板安装在所述激光测距装置的外壳内，所述激光测距装置的激光测距传感器电性连接于所述主板。
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