# US 9,751,155 B2 · On-board camera and its manufacturing method

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- Number: US 9,751,155 B2
- Document ID: US9751155B2
- Status: Granted
- Kind: B2
- Application number: 14/786,638
- Filed: 2015-08-01
- Published: 2016-09-01
- Granted: 2017-09-05
- Earliest claimed: 2014-09-30
- Assignees: Suzhou Invo Automotive Electronics Co., Ltd.
- Applicants: Suzhou Invo Automotive Electronics Co., Ltd.
- Inventors: Yajun Wang; Tianwu Zeng
- Web page: https://patentgrep.com/patent/US9751155B2

## CPC

- B23K 26/032: {using optical means}
- B23K 26/21: by welding
- G03B 17/08: Waterproof bodies or housings
- H04N 23/51: Housings
- H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present invention relates to an on-board camera, comprising a rear housing, a front housing, a lens mounted in the front housing and a sensor fixed on the rear housing; and its manufacturing method. The rear housing is welded to the front housing via a laser to form a seal cavity between the two housings to accommodate the lens and the sensor, and the focal length of the lens is adjusted by adjusting the distance between the sensor and the lens which is further adjusted by the welding height of the two housings.

## Claims

### Claim 1

An on-board camera, comprising:
a sensor, a lens, a rear housing and a front housing, wherein the lens is disposed on the inner surface the front housing and has a focal length, wherein the sensor is disposed inside the rear housing, wherein the rear housing is connected with the front housing via laser welding, wherein a watertight seal cavity is formed between the rear housing and the front housing, wherein the lens and the sensor are completely enclosed by the rear housing and the front housing, wherein the focal length of the lens is adjusted through the-distance between the sensor and the lens, and wherein the distance between the sensor and the lens is adjusted by the welding height of the rear housing and the front housing.

### Claim 2 (depends on 1)

The on-board camera according to claim 1, wherein the sensor is attached and fixed onto the rear housing via screws.

### Claim 3 (depends on 1)

The on-board camera according to claim 1, wherein the lens and the front housing form an integrated structure.

### Claim 4 (depends on 1)

The on-board camera according to claim 1, wherein the lens and the front housing form a split structure, and wherein the lens is assembled in inside the front housing.

### Claim 5 (depends on 1)

The on-board camera according to claim 1, wherein the sensor includes a baseplate and a charge-coupled device arranged on the baseplate, and wherein the baseplate is fixed on the rear housing.

### Claim 6 (depends on 1)

A manufacturing method of the on-board camera according to claim 1, wherein the manufacturing method comprises the following steps:
disposing a sensor inside a rear housing;
disposing a lens inside a front housing;
connecting the rear housing with the front housing via laser welding so as to form a watertight seal cavity between the rear housing and the front housing to completely enclose the lens and the sensor, regulating the welding height of the rear housing in real time during welding of the rear housing and the front housing, to adjust the focal length of the lens.

### Claim 7 (depends on 6)

The manufacturing method of the on-board camera according to claim 6, wherein the sensor is attached and fixed onto the rear housing via screws.

### Claim 8 (depends on 6)

The manufacturing method of the on-board camera according to claim 6, wherein the lens and the front housing form an integrated structure.

### Claim 9 (depends on 6)

The manufacturing method of the on-board camera according to claim 6, wherein the lens and the front housing form a split structure, and the manufacturing method includes the following step: the lens is assembled inside the front housing.

### Claim 10 (depends on 6)

The manufacturing method of the on-board camera according to claim 6, wherein the sensor includes a baseplate and a charge-coupled device arranged on the baseplate, and the baseplate is fixed on the rear housing.