Detecting module

Abstract

A detection module includes a transmitting component, a first optical element, and a receiving component. The transmitting component emits a detection light beam and includes a first light source and a second light source. The detection light beam includes a first beam emitted by the first light source and a second beam emitted by the second light source. The first optical element includes an optical axis extending along a first direction. The first light source and the second light source are arranged along a second direction, with the second light source having a distance from the optical axis. The second direction is perpendicular to the first direction. The first beam illuminates a first area after exiting the first optical element, and the second beam illuminates a second area after exiting the first optical element. The first and second areas do not overlap. After passing through the first optical element, the detection light beam is reflected by an object to form a reflected light beam, which is received by the receiving component.

Claims

1. A detection module, comprising: A transmitting component emits a detection light beam, the transmitting component including a first light source and a second light source, the detection light beam including a first beam emitted by the first light source and a second beam emitted by the second light source; a first optical element including an optical axis extending along a first direction; and a receiving component; wherein the first light source and the second light source are arranged along a second direction, and the second light source has a distance from the optical axis, the second direction being perpendicular to the first direction; wherein the first beam, after exiting the first optical element, illuminates a first area, and the second beam, after exiting the first optical element, illuminates a second area, and the first area and the second area do not overlap; wherein the detection light beam, after passing through the first optical element, is reflected by an object to form a reflected light beam, and the reflected light beam is received by the receiving component.

2. A detection module, comprising: A transmitting component emits a detection light beam, the transmitting component including a first light source and a second light source, the detection light beam including a first beam emitted by the first light source and a second beam emitted by the second light source; a first optical element including an optical axis extending along a first direction; a receiving component; and a deflecting mirror; wherein the first light source and the second light source are arranged along a second direction, and the second light source has a distance from the optical axis, the second direction being perpendicular to the first direction; wherein the deflecting mirror is arranged relative to the transmitting component along the first direction to deflect the detection light beam leaving the first optical element, causing the detection light beam to travel along a third direction, the third direction being perpendicular to the second direction; wherein the detection light beam passes sequentially through the first optical element and the deflecting mirror, and is reflected by an object to form a reflected light beam, the reflected light beam being received by the receiving component.

3. The detection module as described in claim 1 or 2, wherein the optical axis may or may not pass through the first light source; when the optical axis passes through the first light source, the first beam is emitted from the first optical element along the first direction; when the optical axis does not pass through the first light source, the first light source and the second light source are located on opposite sides of the optical axis, and the first beam is deflected along one path in the second direction after emitting from the first optical element, and the second beam is deflected along another path in the second direction after emitting from the first optical element.

4. The detection module as claimed in claim 1, wherein the first optical element and the first light source are movable relative to each other in a second direction, such that the first central axis is parallel to and intersects the optical axis, or that the first central axis is parallel to and does not intersect the optical axis; wherein when the first central axis is parallel to and intersects the optical axis, the first light beam travels along the first direction after exiting the first optical element, and when the first central axis is parallel to and does not intersect the optical axis, the first central axis and the optical axis have another distance, and the first light beam deflects towards the second direction after exiting the first optical element.

5. A detection module, comprising: A transmitting component emits a detection light beam, the transmitting component including a first light source and a second light source, the detection light beam including a first beam emitted by the first light source and a second beam emitted by the second light source; a first optical element including an optical axis extending along a first direction and passing through the first light source; and a receiving component; wherein the first light source includes a first central axis, the second light source includes a second central axis, the first central axis being parallel to and intersecting the optical axis, and the second central axis being parallel to and not intersecting the optical axis; wherein the first beam travels along the first direction after exiting the first optical element; wherein the second light source is disposed on one side of the first light source relative to the first light source along a second direction and has a distance from the optical axis, the second direction being perpendicular to the first direction; wherein the detection light beam, after passing through the first optical element, is reflected by an object to form a reflected light beam, the reflected light beam being received by the receiving component.

6. The detection module as described in claim 5, wherein the first light source and the second light source each include a light-emitting area, and the first central axis and the second central axis are each a geometric central axis of the light-emitting area; the first optical element includes a first surface and a second surface, the first surface or the second surface being an arc surface having only one vertex.

7. The detection module as described in any one of claims 1, 4, 5 or 6 further includes a deflecting mirror, wherein the deflecting mirror is disposed relative to the emitting assembly along the first direction to deflect the detection light beam leaving the first optical element so that the detection light beam travels along a third direction perpendicular to the second direction; the first beam beam illuminates a first area after exiting the first optical element, and the second beam beam illuminates a second area after exiting the first optical element, and the first area and the second area do not overlap.

8. The detection module as described in any one of claims 1, 2, 4, 5, and 6, further comprising a housing, a partition, a window, a shield, a control unit, a position sensing unit, and a drive unit; the housing having an opening; the partition being made of an opaque material and disposed within the housing, dividing the interior of the housing into a first space and a second space; the transmitting component and the optical element being disposed in the first space; and the receiving component being disposed in the second space; the light filter being disposed in the opening, and the detection light passing through the opening. The reflected light enters the housing through an opening after leaving the housing; the control unit is electrically connected to the position sensor and the drive unit; the drive unit drives the steering mirror to rotate along an axis parallel to the second direction; the steering mirror includes a plurality of reflective surfaces; the shield is fitted onto the steering mirror and extends from a direction away from the steering mirror, the shield has a body and at least one position sensing part, the at least one position sensing part is disposed on the periphery of the body, the shield and the steering mirror can rotate synchronously and can be detected by the position sensor.

9. The detection module according to any one of claims 1, 2, 4, 5 or 6, wherein the emitting assembly further comprises a third light source, the third light source emits a third light beam, the third light source is disposed adjacent to the first light source or the second light source along a third direction relative to the first light source or the second light source; or the third light source is disposed on the other side of the first light source along the second direction relative to the first light source and away from the optical axis, such that the first light source is located between the second light source and the third light source.

10. The detection module according to any one of claims 1, 2, 4, 5 or 6, further comprising a second optical element, the receiving assembly comprises a calculation unit, the reflected light passes through the second optical element and is received by the receiving assembly, and the calculation unit calculates a characteristic of the object according to the reflected light, and wherein the first light beam emitted by the first light source and the second light beam emitted by the second light source are emitted sequentially.

11. The detection module according to any one of claims 1, 2, 4, 5 or 6, the detection module can achieve the function when satisfying any one of the following conditions or any combination thereof: 0° < HFOV < 180°; 0° < VFOV1 < 5°; 0° < VFOV2 < 5°; 5° < θ1 < 45°; wherein VFOV1 = ARCTAN(11a / SPLO); wherein VFOV2 = ARCTAN(12a / SPLO); wherein θ1 = ARCTAN(SVLO / SPLO), HFOV is a horizontal range of the detection light, VFOV1 is a vertical range of the first light beam, VFOV2 is a vertical range of the second light beam, θ1 is an angle between the first light beam and the second light beam, 11a and 12a are respectively an effective dimension in a horizontal direction or a vertical direction available for the first light source and the second light source, SVLO is a distance between a second central axis of the second light source and a first central axis of the first light source, and SPLO is a shortest distance from a light exit surface of the emitting assembly to the first optical element.

12. The detection module according to any one of claims 1, 2, 4, 5 or 6, the first light source and the second light source are capable of relative movement in the third direction.

13. The detection module according to claim 4, the first light source is capable of relative movement in a third direction, the third direction is perpendicular to the second direction.

Images