WO2021114036A1

WO2021114036A1 - Tof camera and electronic device

Info

Publication number: WO2021114036A1
Application number: PCT/CN2019/124062
Authority: WO
Inventors: 丁细超; 李宗政
Original assignee: 南昌欧菲生物识别技术有限公司
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-17

Abstract

A TOF camera (100) and an electronic device. The TOF camera (100) comprises a light emission module (10), a lens module (20), a reflection piece (30), a rotating module (40) and an image processing module (50). The rotating module (40) drives the reflection piece (30) to rotate. The image processing module (50) receives images collected by the lens module (20) to perform splicing processing, so as to acquire a complete image of a photographed object (60). The minimum distance between a region boundary of a reflection surface (31) of the reflection piece (30) within a field of view range of the lens module (20) and a circumferential edge of the reflection surface (31) is not less than 0.2 mm. The reflection piece (30) reflects natural light and modulated light into the lens module (20) multiple times, and no further processing is performed on the image, such that the number of pixels of a single partial image of the photographed object is higher; in addition, the distance between the region boundary of the reflection surface (31) within the field of view range of the lens module (20) and the edge of the reflection surface (31) is not less than 0.2 mm, which ensures that the reflection piece (30) fully reflects the natural light and modulated light, thereby guaranteeing the quality of the image formed by the lens module (20).

Description

TOF camera and electronic equipment

Technical field

This application relates to the field of electronic technology, and specifically to a TOF camera and an electronic device with the TOF camera.

Background technique

The description of the background technology in this application belongs to the related technology related to this application. It is only used to illustrate and facilitate the understanding of the application content of this application. It should not be construed as the applicant expressly believes or presumes that the applicant believes that the application is the first application for this application. Existing technology on the filing date.

The TOF (Time of Flight) modules currently on the market include a transmitter module and a receiver module. The transmitter module outputs a uniform light spot image, and the receiver module receives the light reflected by the object to produce An image with three-dimensional data. However, the pixels of the current light sensor are only VGA level, and the pixels that generate images are relatively low.

Summary of the invention

An embodiment of the first aspect of the present application provides a TOF camera, including: a light emitting module, the light emitting module is used to emit modulated light; a lens module, the lens module is used to receive the reflection of the object Natural light and modulated light emitted by the light emitting module and returned by the object to be photographed; a reflective member, the reflective member has a reflective surface, and the reflective member reflects the natural light and the modulated light to enter the lens mold Group; rotation module, the rotation module is connected with the reflecting part, used to drive the reflection part to rotate; and an image processing module, the image processing module is connected with the lens module, used to The natural light and modulated light received by the lens module are spliced to obtain a complete image of the object to be photographed; wherein, the boundary of the reflective surface within the field of view of the lens assembly and the circumferential direction of the reflective surface The minimum distance between the edges is greater than or equal to 0.2mm.

In the TOF camera provided by this application, the reflector quickly adjusts the reflection angle through the rotating module, so that the natural light and modulated light reflected by the photographed object are reflected into the lens module at different angles in multiple times, and the photographed object is formed by the processing of the lens module. The image of each part of the object, that is, the image of the photographed object is divided into multiple parts by the reflection of the reflector, and sent to the image processing module, and the image processing module stitches the image of each part of the photographed object into a complete photographed object The image of the object; because the reflector divides the natural light and modulated light into the lens module at different angles, the image has not undergone other processing, so that the pixels of a single part of the photographed object are higher, and the splicing is completed The image of the photographed object has higher pixels; in addition, the minimum distance between the edge of the reflective surface in the field of view of the lens assembly is greater than or equal to 0.2mm, which can ensure that the reflector will fully reflect natural light and modulated light, and avoid The edge of the reflective surface has an impact on natural light and modulated light, resulting in distortion of the edge of the image formed after the natural light and modulated light enter the lens module, which guarantees the quality of the image formed by the lens module, thereby ensuring the image processing module The quality of the image stitched together into a complete photographed object.

Optionally, the reflector has an initial position, and when the reflector is in the initial position, the distance between the lens surface of the lens module and the reflective surface in the optical axis direction of the lens module is 2mm～ 15mm.

In this embodiment, on the one hand, if the distance between the lens surface of the lens module and the reflective surface in the optical axis direction of the lens module is less than 2mm, the distance between the lens module and the reflective part is too small, and the reflective part is rotating In the process, it is easy to interfere with the lens module, resulting in the incomplete reflection of natural light and modulated light by the reflector, making the image spliced by the image processing module incomplete; on the other hand, if the lens surface and the reflective surface of the lens module The distance in the optical axis direction of the lens module is greater than 15mm, and the area of the reflecting surface is too large, resulting in an excessive volume of the reflecting part, increasing the space occupied by the reflecting part, and reducing the space utilization; therefore, the lens of the lens module The distance between the surface and the reflecting surface in the direction of the optical axis of the lens module is within 2mm～15mm. On the one hand, it can ensure the effect of the TOF camera to capture images. On the other hand, the TOF camera has a smaller size, thereby reducing the TOF. The space occupied by the camera.

Optionally, the distance between the lens surface of the lens module and the reflective surface in the direction of the optical axis of the lens module is 7 mm.

In this embodiment, the distance between the lens surface of the lens module and the reflecting surface in the direction of the optical axis of the lens module is 7mm. The small size reduces the space occupied by the TOF camera.

Optionally, when the reflecting member is in the initial position, the inclination angle of the reflecting surface with respect to the optical axis of the lens module is 30°-60°, and the horizontal plane is perpendicular to the lens surface.

In this embodiment, the inclination angle of the reflecting surface determines the reflecting angle of the reflecting surface, and the reflecting angle of the reflecting surface can be flexibly adjusted by setting the inclination angle of the reflecting surface; the inclination angle of the reflecting surface is within 30°-60°, which can ensure The reflector fully reflects the natural light and modulated light reflected by the photographed object into the lens module in multiple times.

Optionally, the inclination angle is 45°.

In this embodiment, the inclination angle of the reflective surface is 45°, which can ensure that the reflector fully reflects the natural light and modulated light reflected by the photographed object into the lens module in multiple times.

Optionally, the rotation module includes: a mounting frame, the mounting frame is used to fix the reflector; a first rotator, the first rotator is connected to the mounting frame, and is used to drive the reflection The second rotator rotates around the first axis in the first direction; and a second rotator, the second rotator is connected to the reflector, and is used to drive the mounting frame to rotate around a second axis in a second direction; the reflector When the component is in the initial position, the first axis is located in the first plane and is perpendicular to the optical axis, and the second axis is perpendicular to the first axis and the optical axis at the same time; the first plane is perpendicular On the reflecting surface, and the optical axis is located in the first plane.

In this embodiment, the first rotator adjusts the reflection angle of the reflecting surface of the reflector in the first direction, and the second rotator adjusts the reflection angle of the reflecting surface of the reflector in the second direction, through the first rotator and the second rotator. The cooperation of the rotator enables the reflector to reflect the natural light and modulated light reflected by the photographed object into the lens module multiple times. Through the processing of the lens module, an image of each part of the photographed object is formed and sent to the image processing module. The image processing module stitches the images of each part of the photographed object into a complete image of the photographed object.

Optionally, the rotation angle of the reflector from the initial position around the first axis in a clockwise or counterclockwise direction is less than 15°, and/or the reflector from the initial position around the second axis The rotation angle of clockwise or counterclockwise rotation is less than 15°.

In this embodiment, if the rotation angle of the reflector rotating clockwise or counterclockwise from the initial position around the first axis is greater than 15°, the distance of the reflector rotating in the first direction is too large, and the reflecting surface reflects the non-photographed object More light is reflected. On the one hand, it reduces the utilization of the reflecting surface and causes a waste of resources. On the other hand, there are more images of non-photographed objects in the first direction in the final stitched complete image, which affects the final result. Imaging effect; therefore, the rotation angle of the reflector from the initial position around the first axis in a clockwise or counterclockwise rotation is less than 15°. On the one hand, it can ensure that the reflector in the first direction fully modulates the natural light of the object being photographed The light is reflected multiple times into the lens module to form a complete image of the object being photographed. On the other hand, the utilization rate of the reflecting surface is improved, so that the final stitched complete image is not the object being photographed in the first direction. There are fewer images. In the same way, if the rotation angle of the reflector rotating clockwise or counterclockwise from the initial position around the second axis is greater than 15°, the distance of the reflector rotating in the second direction is too large, and the reflection of the reflecting surface is not reflected by the photographed object. More light, on the one hand, it reduces the utilization of the reflecting surface and causes a waste of resources. On the other hand, there are more images of non-photographed objects in the second direction in the final stitched complete image, which affects the final imaging Effect; therefore, the rotation angle of the reflector from the initial position around the second axis in a clockwise or counterclockwise rotation is less than 15°. On the one hand, it can ensure that the reflector can fully absorb the natural light of the object being photographed in the second direction. The modulated light is reflected into the lens module multiple times to form a complete image of the object being photographed. On the other hand, the utilization of the reflecting surface is improved, so that the final stitched complete image is not the object being photographed in the second direction. There are fewer images.

Optionally, the angle of rotation of the reflector from the initial position around the first axis in a clockwise or counterclockwise direction is 7°, and/or the reflector from the initial position around the second axis The rotation angle of clockwise and counterclockwise rotation is 7°.

In this embodiment, the rotation angle of the reflector from the initial position around the first axis in a clockwise or counterclockwise rotation is 7°. On the one hand, it can ensure that the reflector can fully absorb the natural light of the object being photographed in the first direction. The modulated light is reflected into the lens module multiple times to form a complete image of the object being photographed. On the other hand, the utilization of the reflecting surface is improved, so that the final stitched complete image is not the object being photographed in the first direction. There are fewer images. In the same way, the reflector rotates clockwise or counterclockwise to 7° around the second axis from the initial position. On the one hand, it can ensure that the reflector can fully divide the natural light and modulated light of the object in the second direction. The secondary reflection enters the lens module to form a complete image of the object being photographed. On the other hand, the utilization of the reflecting surface is improved, so that there are fewer images of non-photographed objects in the second direction in the final stitched complete image. .

Optionally, the reflecting member includes a reflecting mirror or a total reflection prism.

In this embodiment, the reflector has a simple structure and a small volume, which can reduce the volume of the TOF camera; the mechanical strength of the total reflection prism is high, the probability of damage is low, and the use reliability of the total reflection prism is high, thereby extending The service life of the product is improved.

An embodiment of the second aspect of the present application provides an electronic device, including: a housing; and the TOF camera of any one of the above, the TOF camera is mounted on the housing.

The electronic device provided by the present application has a simple structure and high-definition output image, thereby improving the comfort of use of the product, thereby reducing the market competitiveness of the product.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.

The additional aspects and advantages of the present application will become apparent in the following description, or be understood through the practice of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 is a structural block diagram of the TOF camera described in this application;

FIG. 2 is a schematic diagram of a partial structure of the first embodiment of the TOF camera according to the present application;

FIG. 3 is a schematic diagram of a partial structure of the first embodiment of the rotating module according to the present application;

4 is a schematic diagram of a partial structure of a second embodiment of the TOF camera according to the present application;

FIG. 5 is a schematic diagram of a partial structure of a second embodiment of the rotating module according to the present application;

FIG. 6 is a schematic diagram of a partial structure of the electronic device described in the present application.

Among them, the corresponding relationship between the reference signs and component names in Figures 1 to 6 is:

TOF camera 100, light emitting module 10, lens module 20, reflector 30, reflecting surface 31, mirror 32, total reflection prism 33, rotating module 40, mounting frame 41, first rotator 42, second rotation The device 43, the image processing module 50, the photographed object 60, the electronic device 200, the housing 201, and the display screen 202.

Detailed ways

In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be further described in detail below with reference to the accompanying drawings and specific implementations. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not covered by the specific details disclosed below. Limitations of the embodiment.

The following discussion provides several embodiments of the application. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined. Therefore, the present application may also be considered to include all possible combinations of the same and/or different embodiments described. Therefore, if one embodiment includes A, B, C, and another embodiment includes a combination of B and D, then this application should also be considered as including all other possible combinations of one or more of A, B, C, and D The embodiment, although the embodiment may not be clearly written in the following content.

As shown in FIGS. 1 to 3, the TOF camera 100 provided by the embodiment of the first aspect of the present application includes: a light emitting module 10, a lens module 20, a reflector 30, a rotating module 40 and an image processing module 50.

As shown in Fig. 1, the light emitting module 10 is used to emit modulated light.

As shown in FIG. 1, the lens module 20 is used to receive natural light reflected by the photographed object 60 and modulated light emitted by the light emitting module 10 and returned by the photographed object 60.

As shown in FIG. 1, the reflective member 30 has a reflective surface 31, and the reflective member 30 reflects natural light and modulation into the lens module 20.

As shown in FIG. 3, the rotating module 40 is connected to the reflector 30 for driving the reflector 30 to rotate.

As shown in FIG. 1, the image processing module 50 is connected to the lens module 20 for splicing natural light and modulated light received by the lens module 20 to obtain a complete image of the photographed object 60.

As shown in FIG. 2, the minimum distance L between the boundary of the reflective surface 31 in the field of view of the lens assembly 20 and the circumferential edge of the reflective surface 31 is greater than or equal to 0.2 mm.

In the TOF camera 100 provided in the present application, the light emitting module 10 emits modulated light to an object 60, the object 60 reflects the modulated light and natural light, and the reflector 30 reflects the partially modulated light and natural light into the lens module 20. The lens The module 20 forms part of the image of the object 60 according to the part of the modulated light and natural light, and sends it to the image processing module 50. The image processing module 50 receives the image of the part of the object 60; the rotating module 40 controls the reflector 30 Rotate to adjust the incident angle of the reflector 30 to reflect the modulated light and natural light reflected by another part into the lens module 20. The lens module 20 forms the modulated light and natural light into another part of the image of the object 60 and sends it to The image processing module 50 receives the image of another part of the photographed object 60; the rotation module 40 controls the reflector 30 to rotate rapidly, so as to reflect the natural light and the modulated light reflected by the photographed object 60 in different ways. The angle enters the lens module 20. The lens module 20 forms an image of each part of the photographed object 60 and sends it to the image processing module 50. The image processing module 50 receives the image of each part of the photographed object 60 and sends the image of the photographed object 60 to the image processing module 50. 60. The images of various parts are stitched into a complete image of the object 60; since the reflector 30 reflects natural light and modulated light into the lens module 20 in multiple times, no other processing is performed, so that a single part of the image of the object 60 is taken. The pixels are higher, so that the image stitched into a complete photographed object 60 has higher pixels.

In addition, the minimum distance L between the boundary of the reflective surface 31 in the field of view of the lens assembly 20 and the circumferential edge of the reflective surface 31 is greater than or equal to 0.2 mm. On the one hand, it can ensure that the reflective member 30 will fully reflect natural light and The modulated light prevents the edge of the reflective surface 31 from affecting the natural light and modulated light, causing the natural light and modulated light to enter the lens module 20 to form an image that is distorted, that is, to ensure the quality of the image formed by the lens module 20, Thus, the quality of the image of the image processing module 50 spliced into a complete object 60 is guaranteed; on the other hand, it is avoided that the reflective surface 31 deviates from the field of view of the lens assembly 20 due to assembly tolerances, and the lens module 20 is guaranteed Form the integrity of the image.

As shown in FIG. 2, in an embodiment of the present application, the reflector 30 has an initial position. When the reflector 30 is in the initial position, the lens surface of the lens module 20 and the reflective surface 31 are on the optical axis of the lens module. The distance D in the direction is 2 mm to 15 mm.

In this embodiment, on the one hand, if the distance D between the lens surface of the lens module 20 and the reflective surface 31 in the optical axis direction of the lens module 20 is less than 2 mm, the distance between the lens module 20 and the reflector 30 is too large. Small, the reflector 30 is likely to interfere with the lens module 20 during the rotation, resulting in the reflector 30 not being able to completely reflect natural light and modulated light, making the image spliced by the image processing module 50 incomplete. On the other hand, If the distance D between the lens surface of the lens module 20 and the reflective surface 31 in the optical axis direction of the lens module 20 is greater than 15 mm, the area of the reflective surface 31 is too large, resulting in the volume of the reflective member 30 being too large, and the reflective member 30 is increased. The occupied space reduces the space utilization; therefore, the distance D between the lens surface of the lens module 20 and the reflective surface 31 in the optical axis direction of the lens module 20 is within 2 mm to 15 mm. On the one hand, it can ensure the TOF camera 100 The effect of capturing an image, on the other hand, makes the TOF camera 100 have a smaller size, thereby reducing the space occupied by the TOF camera 100.

As shown in FIG. 2, in an embodiment of the present application, the distance D between the lens surface of the lens module 20 and the reflective surface 31 in the optical axis direction of the lens module 20 is 7 mm.

In this embodiment, the distance D between the lens surface of the lens module 20 and the reflective surface 31 in the optical axis direction of the lens module 20 is 7 mm. On the one hand, it can ensure the image capture effect of the TOF camera 100, on the other hand, The TOF camera 100 has a smaller size, thereby reducing the space occupied by the TOF camera 100.

As shown in FIG. 2, in an embodiment of the present application, when the reflector 30 is in the initial position, the inclination angle α of the reflecting surface 31 with respect to the optical axis of the lens module 20 is 30°-60°, and the horizontal plane corresponds to the lens surface. vertical.

In this embodiment, the inclination angle α of the reflecting surface 31 determines the reflecting angle of the reflecting surface 31, and the reflecting angle of the reflecting surface 31 can be flexibly adjusted by setting the inclination angle α of the reflecting surface 31. The inclination angle α of the reflective surface 31 is within 30°-60°, which can ensure that the reflector 30 fully reflects the natural light and modulated light reflected by the object 60 into the lens module 20 in multiple times.

As shown in Fig. 2, in an embodiment of the present application, the inclination angle α is 45°.

In this embodiment, the inclination angle α of the reflective surface 31 is 45°, which can ensure that the reflector 30 fully reflects the natural light and modulated light reflected by the object 60 into the lens module 20 in multiple times.

As shown in FIG. 3, in an embodiment of the present application, the rotation module 40 includes: a mounting frame 41, a first rotator 42, and a second rotator 43.

The mounting frame 41 is used to fix the reflector 30.

The first rotator 42 is connected to the mounting frame 41 for driving the reflector 30 to rotate around the first axis in the first direction.

The second rotator 43 is connected to the mounting frame 41 for driving the reflector 30 to rotate around the second axis in the second direction.

When the reflector is in the initial position, the first axis is located in the first plane and perpendicular to the optical axis, and the second axis is perpendicular to the first axis and the optical axis at the same time; the first plane is perpendicular to the reflecting surface, and the optical axis is located in the first plane Inside.

In this embodiment, the first rotator 42 adjusts the reflection angle of the reflective surface 31 of the reflector 30 in the first direction, and the second rotator 43 adjusts the reflection angle of the reflective surface 31 of the reflector 30 in the second direction. The cooperation of a rotator 42 and a second rotator 43 enables the reflector 30 to reflect the natural light and modulated light reflected by the photographed object 60 into the lens module 20 in multiple times, and form the photographed object 60 through the processing of the lens module 20 The images of each part are sent to the image processing module 50, and the image processing module 50 stitches the images of each part of the photographed object 60 into a complete image of the photographed object 60.

In an embodiment of the present application, the first rotator is a micro motor, the output shaft of the micro motor is connected to the mounting frame, and the micro motor drives the mounting frame to rotate in the first direction. The second rotator is a micro motor, the output shaft of the micro motor is connected to the mounting frame, and the micro motor drives the mounting frame to rotate in the second direction.

As shown in FIG. 2, in an embodiment of the present application, the reflector 30 is a reflector 32.

In this embodiment, the mirror 32 has a simple structure and a small volume, which can reduce the volume of the TOF camera 100.

As shown in FIG. 3, in an embodiment of the present application, the rotation angle β1 of the reflector 30 from the initial position around the first axis in a clockwise or counterclockwise direction is less than 15°.

In this embodiment, if the rotation angle β1 of the reflector 30 rotated clockwise or counterclockwise from the initial position around the first axis is greater than 15°, the distance that the reflector 30 rotates in the first direction is too large, and the reflective surface 31 reflects The non-photographed object 60 reflects more light. On the one hand, it reduces the utilization of the reflecting surface 31 and causes a waste of resources. On the other hand, the final stitched complete image contains the non-photographed object 60 in the first direction. There are many images, which affect the final imaging effect; therefore, the rotation angle β1 of the reflector 30 from the initial position around the first axis in a clockwise or counterclockwise rotation is less than 15°. On the one hand, it can ensure that the reflector 30 is in the first direction. The natural light and modulated light of the photographed object 60 are fully reflected into the lens module 20 in multiple times to form a complete image of the photographed object 60. On the other hand, the utilization rate of the reflecting surface 31 is improved, and the final splicing is There are fewer images of non-photographed objects 60 in the first direction in the complete image of.

As shown in FIG. 3, in a specific embodiment of the present application, the rotation angle β1 of the reflector 30 from the initial position around the second axis in a clockwise or counterclockwise direction is 7°.

In this embodiment, the rotation angle β1 of the reflector 30 from the initial position around the first axis in a clockwise or counterclockwise rotation is 7°. On the one hand, it can ensure that the reflector 30 can fully capture the object in the first direction. The natural light and modulated light of 60 are reflected multiple times into the lens module 20 to form a complete image of the object 60. On the other hand, the utilization rate of the reflecting surface 31 is improved, so that the final stitched complete image is in the first place. There are fewer images of the non-photographed object 60 in one direction.

As shown in FIG. 3, in an embodiment of the present application, the rotation angle β2 of the reflector 30 from the initial position around the second axis in a clockwise or counterclockwise direction is less than 15°.

In this embodiment, if the rotation angle β2 of the reflector 30 rotated clockwise or counterclockwise from the initial position around the second axis is greater than 15°, the distance that the reflector 30 rotates in the second direction is too large, The reflective surface 31 reflects more light reflected by the non-photographed object 60. On the one hand, it reduces the utilization of the reflective surface 31 and causes a waste of resources. On the other hand, the final stitched complete image is not captured in the second direction. There are many images of the shooting object 60, which affects the final imaging effect; therefore, the rotation angle β2 of the reflector 30 from the initial position around the second axis in a clockwise or counterclockwise rotation is less than 15°. On the one hand, it can ensure that the reflector 30 is in position. In the second direction, the natural light and modulated light of the photographed object 60 are fully reflected into the lens module 20 in multiple times to form a complete image of the photographed object 60. On the other hand, the utilization rate of the reflecting surface 31 is improved. In the final stitched complete image, there are fewer images of the non-photographed object 60 in the second direction.

As shown in FIG. 3, in an embodiment of the present application, the rotation angle β2 of the second rotator 43 in the second direction is 7°.

In this embodiment, the rotation angle β2 of the reflector rotating clockwise or counterclockwise from the initial position around the first axis is 7°. On the one hand, it can be ensured that the reflector 30 can fully move the object 60 in the second direction. Natural light and modulated light are reflected multiple times into the lens module 20 to form a complete image of the object 60. On the other hand, the utilization rate of the reflecting surface 31 is improved, so that the final stitched complete image in the second direction There are fewer images of the non-photographed object 60.

As shown in FIG. 4 and FIG. 5, in another embodiment of the present application, the reflector 30 is a total reflection prism 33.

In this embodiment, the mechanical strength of the total reflection prism 33 is relatively high, the probability of being damaged is low, and the use reliability of the total reflection prism 33 is high, thereby prolonging the service life of the product.

As shown in FIG. 6, the electronic device 200 provided by the embodiment of the second aspect of the present application includes: a housing 201, a display screen 202, and the TOF camera 100 described in any one of the above, and the TOF camera 100 is mounted on the housing.

The electronic device may include a mobile phone, a notebook or a tablet computer, etc.

The initial position of the reflector is: the position of the reflector when it leaves the factory. At this time, the reflecting surface is set directly on the lens surface of the lens module; the reflector does not rotate clockwise or counterclockwise around the first axis or the second axis, and the lens assembly The optical axis passes through the center of the reflecting surface.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and should not limit the application. In this application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more than two, unless otherwise stated. Clearly defined. The terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be It is directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in this application In at least one embodiment or example. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A TOF camera, characterized in that it comprises:

A light emitting module, the light emitting module is used to emit modulated light;

A lens module, the lens module being used to receive natural light reflected by the object being photographed and modulated light emitted by the light emitting module and returned by the object being photographed;

A reflector, the reflector has a reflective surface, and the reflector reflects the natural light and the modulation to enter the lens module;

A rotating module, the rotating module is connected to the reflecting member and used for driving the reflecting member to rotate; and

An image processing module, the image processing module is connected to the lens module and used for splicing natural light and modulated light received by the lens module to obtain a complete image of the object being photographed;

Wherein, the minimum distance between the boundary of the reflective surface in the field of view of the lens module and the circumferential edge of the reflective surface is greater than or equal to 0.2 mm.
The TOF camera of claim 1, wherein:

The reflector has an initial position, and when the reflector is in the initial position, the distance between the lens surface of the lens module and the reflective surface in the optical axis direction of the lens module is 2 mm to 15 mm.
The TOF camera of claim 2, wherein:

The distance between the lens surface of the lens module and the reflecting surface in the direction of the optical axis of the lens module is 7 mm.
The TOF camera of claim 1, wherein:

When the reflecting member is in the initial position, the inclination angle of the reflecting surface relative to the optical axis of the lens module is 30°-60°.
The TOF camera of claim 4, wherein:

The inclination angle is 45°.
The TOF camera of claim 1, wherein:

The rotating module includes: a mounting frame for fixing the reflector;

A first rotator, the first rotator is connected to the mounting frame and used to drive the reflector to rotate around a first axis in a first direction; and

A second rotator, the second rotator is connected to the mounting frame, and is used to drive the reflector to rotate around a second axis in a second direction;

When the reflector is in the initial position, the first axis is located in a first plane and is perpendicular to the optical axis, and the second axis is perpendicular to the first axis and the optical axis at the same time;

The first plane is perpendicular to the reflective surface, and the optical axis is located in the first plane.
The TOF camera of claim 6, wherein:

The rotation angle of the reflector from the initial position around the first axis in a clockwise or counterclockwise rotation is less than 15°, and/or

The rotation angle of the reflector from the initial position around the second axis in a clockwise or counterclockwise direction is less than 15°.
The TOF camera according to claim 7, wherein:

The rotation angle of the reflector from the initial position around the first axis in a clockwise or counterclockwise direction is 7°, and/or

The rotation angle of the reflector from the initial position around the second axis in a clockwise or counterclockwise direction is 7°.
The TOF camera of claim 1, wherein:

The reflecting member includes a reflecting mirror or a total reflection prism.
An electronic device, characterized by comprising: a housing; and

The TOF camera according to any one of claims 1 to 9, which is mounted on the housing.