SCANNING SYSTEM, DETECTION SYSTEM, AND TERMINAL DEVICE

1 . A scanning system, comprising a scanner and a light isolator, and the scanner is divided into a first sub-scanner and a second sub-scanner based on the light isolator, wherein

the first sub-scanner is configured to reflect, to a detection area, detection light from an emitting module;

the second sub-scanner is configured to reflect an echo signal to a receiving module, wherein the echo signal comprises reflected light obtained by reflecting the detection light by a target in the detection area; and

the light isolator comprises a first flange and/or a second flange, wherein the first flange faces a side of the first sub-scanner, and the second flange faces a side of the second sub-scanner.

2 . The system according to claim 1 , wherein the light isolator further comprises a bottom plate, and the bottom plate is disposed between the first sub-scanner and the second sub-scanner; and

the bottom plate is surrounded by the first flange and/or the second flange.

3 . The system according to claim 1 , wherein a first surface of the first flange has an extinction function, and the first surface of the first flange is a surface that is of the first flange and that faces the first sub-scanner; and/or

a first surface of the bottom plate has an extinction function, and the first surface of the bottom plate is a surface that is of the bottom plate and that faces a side of the first flange.

4 . The system according to claim 1 , wherein the scanner further comprises a support, the support is configured to support the scanner, and the light isolator is disposed between the scanner and the support.

5 . The system according to claim 4 , wherein a first surface of the support has an extinction function, and/or a second surface of the second flange has an extinction function, and/or a second surface of the first flange has an extinction function; and

the first surface of the support is a surface that is of the support and that faces the second flange, the second surface of the second flange is a surface that is of the second flange and that faces the support, and the second surface of the first flange is a surface that is of the first flange and that faces the support.

6 . The system according to claim 1 , wherein the scanner comprises a polyhedron rotating mirror, a projection of the light isolator on a first plane is a circumcircle of a projection of the scanner on the first plane, and the first plane is a plane perpendicular to a scanning axis of the scanner.

7 . The system according to claim 1 , wherein the scanner and the light isolator share the scanning axis of the scanner.

8 . The system according to claim 4 , wherein the scanner further comprises a motor, and the motor is fastened to the support; and

the motor is configured to drive the scanner to rotate around the scanning axis.

9 . The system according to claim 1 , wherein a soft material is filled between the bottom plate of the light isolator and the scanner.

10 . The method according to claim 1 , wherein the scanning system further comprises a window; and

the optical processing module further comprises at least two sheet-like structures, the at least two sheet-like structures form a first structure having at least one opening, a value of a first included angle between an opening direction of the first structure and the window is within [0°, 90°], and the first included angle is an included angle in a direction towards the scanner.

11 . The system according to claim 10 , wherein at least one of the at least two sheet-like structures has an extinction function.

12 . The system according to claim 10 , wherein the scanning system further comprises a first side wall, and the first side wall is a side wall connected to the window; and

the first structure is disposed between the scanner and the first side wall, or the first structure is disposed on the first side wall.

13 . The system according to claim 10 , wherein the first structure is a semi-open component, and an opening direction of the semi-open component faces the window.

14 . The system according to claim 13 , wherein a shape of the semi-open component comprises a π shape, a U shape, or a semi-closed rectangle.

15 . The system according to claim 13 , wherein an inner surface of the semi-open component has an extinction function.

16 . The system according to claim 10 , wherein the first structure is a quasi-grating, and a surface of the quasi-grating has an extinction function.

17 . The system according to claim 1 , wherein the optical processing module further comprises a punctured mechanical part; and

the punctured mechanical part comprises a holed area and an unholed area, and the holed area faces the scanner.

18 . The system according to claim 17 , wherein an outer surface of the unholed area has an extinction function, and the outer surface of the unholed area is a surface facing away from a side of the scanner.

19 . The system according to claim 3 , wherein the system meets one or more of the following attributes:

a reflectivity of the first surface that is of the first flange and that has the extinction function is not greater than 10%;

a reflectivity of the second surface that is of the first flange and that has the extinction function is not greater than 10%;

a reflectivity of the second surface that is of the second flange and that has the extinction function is not greater than 10%;

a reflectivity of the first surface that is of the bottom plate and that has the extinction function is not greater than 10%; or

a reflectivity of the first surface that is of the support and that has the extinction function is not greater than 10%.