# US 11,906,664 B2 · Emission module and mounting and adjustment method of the same, LiDAR and smart sensing device

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- Number: US 11,906,664 B2
- Document ID: US11906664B2
- Status: Granted
- Kind: B2
- Application number: 17/586,716
- Filed: 2022-01-27
- Published: 2022-05-19
- Granted: 2024-02-20
- Earliest claimed: 2019-07-29
- Assignees: Suteng Innovation Technology Co., Ltd.
- Applicants: Suteng Innovation Technology Co., Ltd.
- Inventors: Ji Wang
- Web page: https://patentgrep.com/patent/US11906664B2

## CPC

- G01S 7/4817: {relating to scanning}
- G02B 19/0052: {the light source comprising a laser diode (coupling into light guides using intermediate optical elements G02B6/4204; semiconductor lasers having optical devices external to the laser cavity H01S5/005)}
- G01S 7/4813: {Housing arrangements}
- G01S 7/4814: {of transmitters alone}
- G01S 7/484: Transmitters
- G01S 17/931: of land vehicles
- G02B 26/0833: {the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B)}
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Embodiments of the present disclosure provide an emission module and a mounting and adjustment method of the same, a LiDAR and a smart sensing device. An emission module includes an emission apparatus and a collimating element provided sequentially along an outgoing laser, where the emission apparatus is configured to generate the outgoing laser, and the collimating element is configured to collimate the outgoing laser generated by the emission apparatus and emit the outgoing laser; and the collimating element includes a fast-axis collimating element and a slow-axis collimating element provided sequentially along the outgoing laser, the fast-axis collimating element is configured to receive the outgoing laser generated by the emission apparatus and collimate the outgoing laser in a fast-axis direction, and the slow-axis collimating element is configured to receive the outgoing laser collimated in the fast-axis direction, collimate the outgoing laser in the slow-axis direction and emit the outgoing laser.

## Claims

### Claim 1

An emission module, comprising:
an emission apparatus and a collimating element provided sequentially along an outgoing laser,
wherein the emission apparatus is configured to generate the outgoing laser, and the collimating element is configured to collimate the outgoing laser generated by the emission apparatus and emit the outgoing laser; and
the collimating element comprises:
a fast-axis collimating element and a slow-axis collimating element provided sequentially along the outgoing laser,
wherein the fast-axis collimating element is configured to receive the outgoing laser generated by the emission apparatus and collimate the outgoing laser in a fast-axis direction, and
wherein the slow-axis collimating element is configured to receive the outgoing laser collimated in the fast-axis direction, collimate the outgoing laser in the slow-axis direction, and emit the outgoing laser;
wherein the fast-axis collimating element comprises a fast-axis collimating lens, and the slow-axis collimating element comprises a slow-axis collimating lens; wherein the fast-axis collimating lens is an aspherical cylindrical lens, and the slow-axis collimating lens is a spherical cylindrical lens; a generatrix direction of the fast-axis collimating lens is perpendicular to a generatrix direction of the slow-axis collimating lens;
wherein the fast-axis collimating lens is provided in a fast-axis collimating lens holder; and
wherein the slow-axis collimating lens is provided in a slow-axis collimating lens holder,
wherein the fast-axis collimating lens holder comprises a first vertical plate, and
wherein a first mounting aperture for vertically providing the fast-axis collimating lens is arranged on the first vertical plate;
wherein the fast-axis collimating lens holder further comprises a first side baffle, a second side baffle, and a top baffle that extend perpendicular to the first vertical plate, and
wherein the first side baffle, the top baffle, and the second side baffle are sequentially connected, to form a hollow framework;
wherein the slow-axis collimating lens holder comprises a second vertical plate, and a second mounting aperture for vertically providing the fast-axis collimating lens is arranged on the second vertical plate;
wherein the slow-axis collimating lens holder further comprises a third side baffle and a fourth side baffle that extend perpendicular to the second vertical plate, and
wherein the third side baffle, the second vertical plate, and the fourth side baffle are sequentially connected, to form a framework of a U-shape.

### Claim 2 (depends on 1)

The emission module according to claim 1, wherein a capability of the fast-axis collimating lens for focusing outgoing lasers is greater than a capability of the slow-axis collimating lens for focusing outgoing lasers.

### Claim 3 (depends on 1)

The emission module according to claim 1, wherein the emission module further comprises a base, and
wherein both the fast-axis collimating lens holder and the slow-axis collimating lens holder are fixed to the base.

### Claim 4 (depends on 1)

The emission module according to claim 1, wherein the fast-axis collimating lens holder further comprises a first fixing plate extending horizontally from a bottom of the first vertical plate, the first side baffle, and the second side baffle, and
wherein the first fixing plate connects the fast-axis collimating lens holder to the base.

### Claim 5 (depends on 1)

The emission module according to claim 1, wherein the fast-axis collimating lens holder further comprises a pressing plate, and
wherein the pressing plate is provided in front of the first mounting aperture and is configured to fix the fast-axis collimating lens.

### Claim 6 (depends on 3)

The emission module according to claim 3, wherein the slow-axis collimating lens holder further comprises a third fixing plate extending horizontally from a bottom of the second vertical plate, and
wherein the third fixing plate connects the slow-axis collimating lens holder to the base.

### Claim 7 (depends on 3)

The emission module according to claim 3, wherein the collimating element further comprises a fixing base, and
wherein the fast-axis collimating lens and the slow-axis collimating lens are fixed to the fixing base, and are fixed to the base through the fixing base.

### Claim 8 (depends on 3)

The emission module according to claim 3, wherein the emission apparatus comprises an emission plate assembly and an emission plate mounting base,
wherein the emission plate assembly is fixed to the emission plate mounting base, and
wherein the emission plate assembly is fixed to the base through the emission plate mounting base.

### Claim 9 (depends on 8)

The emission module according to claim 8, wherein the emission plate assembly comprises an emission plate, an emission plate adjustment cover, and an emission plate adjustment base, wherein the emission plate adjustment cover and the emission plate adjustment base clamp the emission plate, wherein the emission plate mounting base is provided with a mounting rail matching the emission plate adjustment base of the emission plate assembly, and
wherein the emission plate assembly is mounted in the mounting rail and fixed to the emission plate mounting base.

### Claim 10 (depends on 1)

A mounting and adjustment method of an emission module, wherein the method is applied to the foregoing emission module according to claim 1, and the method comprises:
adjusting a distance between the fast-axis collimating lens and the slow-axis collimating lenses, aligning an optical axis of the fast-axis collimating lens with that of the slow-axis collimating lens, and fixing the fast-axis collimating lens and the slow-axis collimating lens to the base, to obtain the collimating element;
adjusting positions of the emission apparatus and the collimating element; and when a divergence angle of the collimated outgoing light beam is not greater than a preset divergence angle threshold, fixing the emission apparatus to the base, to obtain an emission module.

### Claim 11 (depends on 1)

A LiDAR, comprising an emission module according to claim 1, a beam splitting module, and a receiving module,
wherein the emission module is configured to emit a collimated outgoing laser, wherein the beam splitting module is configured to enable the outgoing laser to be emitted into a detection region after passing through, and deflect a reflected laser in a coaxial optical path with the outgoing laser toward the receiving module, and wherein the receiving module is configured to receive the reflected laser.