A laser focusing method, device and photographing equipment

A technology for laser focusing and shooting equipment, which is applied in the field of laser focusing, and can solve the problems affecting the focusing effect of shooting equipment and the constant laser beam emission power.

Active Publication Date: 2020-03-17
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is a problem that the emission power of the laser beam in the prior art is generally fixed according to the standard that does not cause harm to the human body, that is, no matter how the distance between the photographing device and the object changes, the laser beam The transmission power is constant; while the distance between the camera device and the subject changes, the laser beam with a fixed transmission power will affect the focusing effect of the camera device.

Method used

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  • A laser focusing method, device and photographing equipment
  • A laser focusing method, device and photographing equipment
  • A laser focusing method, device and photographing equipment

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Embodiment 1

[0035] Such as figure 2 As shown, the embodiment of the present invention provides a laser focusing device 20, comprising: a laser emitting module 21, a near-end receiving module 22, a far-end receiving module 23 and a control module 24; the control module 24 includes a control sub-module 241 and a computing Submodule 242 .

[0036] Wherein, the calculation sub-module 242 is connected to the near-end receiving module 22 and the far-end receiving module 23 respectively; the control sub-module 241 is connected to the calculation sub-module 242, and the control sub-module 241 Connect the laser emitting module 21.

[0037] The laser emitting module 21 is used for emitting laser beams.

[0038] The near-end receiving module 22 is configured to receive the laser beam emitted by the laser emitting module 21 .

[0039]The remote receiving module 23 is configured to receive the far-end reflected laser light of the laser beam emitted by the laser emitting module 21 reflected by the ...

Embodiment 2

[0072] An embodiment of the present invention provides a laser focusing method, such as Figure 4 As shown, the laser focusing method includes:

[0073] S301. The laser focusing device calculates the first transmission time. The first transmission time is the time from when the laser beam is emitted with the first transmission power to when the far-end reflected laser beam reflected by the object at the first distance is received. A distance is an effective ranging distance corresponding to the first transmit power.

[0074] The first transmission time in the embodiment of the present invention can be freely figure 2 The shown laser emitting module 21 starts to emit a laser beam with the first emission power, and then proceeds to figure 2 The shown far-end receiving module 23 receives the cut-off time of the far-end reflected laser beam reflected by the object at the first distance.

[0075] It should be noted that, since the distance between the laser emitting module 21 ...

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Abstract

The embodiment of the invention discloses a laser focusing method, device and photographing equipment, which relate to the technical field of laser focusing, and can adjust the emission power of the laser beam in real time without causing harm to the human body. The specific scheme is: calculate the first transmission time, the first transmission time is the time from the start of emitting the laser beam with the first transmission power to the cut-off time of receiving the far-end reflected laser beam reflected by the object at the first distance, the first The distance is the effective ranging distance corresponding to the first transmission power; if the laser beam is received at the second transmission time after the laser beam is transmitted with the first transmission power, then according to the second transmission time and the transmission speed of the laser beam Calculate the second distance, the second transmission time is greater than the first transmission time; calculate the second transmission power according to the first distance, the second distance and the first transmission power; use the second transmission power to transmit the laser beam, and focus the shooting device.

Description

technical field [0001] The invention relates to the technical field of laser focusing, in particular to a laser focusing method, device and photographing equipment. Background technique [0002] Laser focus means that the camera device can emit laser light to the subject in the process of taking pictures, and then receive the laser reflected back by the subject, and calculate the distance between the camera device and the subject according to the time difference between emitting the laser and receiving the reflected laser. The distance, and then the process of focusing the shooting device according to the calculated distance. [0003] The laser focus device in the prior art can be by such as figure 1 The shown laser emitting device, near-end receiving device, far-end receiving device and focusing module are composed. The laser emitting device is used to emit the laser beam, and part of the emitted laser beam is received by the near-end receiving device, and the time when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/235
CPCH04N23/67H04N23/73
Inventor 韩忠峰刘玉洁
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD
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