TWI386043B - Image capturing device - Google Patents

Description

Camera

The present invention relates to an image pickup apparatus.

At present, the camera must be equipped with a lens to be used. Generally, the appropriate lens can be selected according to the actual situation of the application site, for example, a fixed focus lens or a zoom lens, a standard lens or a wide-angle lens. In the prior art, when the fixed focus lens is mounted, since the focal length of the lens is fixed, the sharpness of the image is generally achieved by manually adjusting the pitch of the lens, or the lens ring is used to manually adjust the lens and the image. The distance between the sensors is used to adjust the focal length of the lens, but it is inconvenient to use such manual adjustment. Therefore, how to provide a camera device that has a simple structure and can automatically adjust the distance between the lens and the image sensor to realize the back focus adjustment has become a problem that the industry needs to solve.

In view of this, it is necessary to provide an image pickup apparatus which is simple in structure and can realize back focus adjustment.

A camera device includes a lens, a casing, an image sensor, and a motor. The lens is fixedly connected to the casing, and the image sensor and the motor are disposed in the casing. The casing includes a front cover and a bottom cover. An image sensor seat is disposed in the casing, and the image sensor is fixed on the image sensor seat. The image sensor holder is connected to the front cover by a plurality of guiding rods, the guiding rods are disposed parallel to the optical axis direction of the lens, and the image sensor holder is slidable on the guiding rod. The image sensor is connected to the bottom cover by a spring, and the spring is given The image sensor holder has a pulling force away from the lens direction. The motor is fixed on the bottom cover, the motor includes a driving shaft, and the driving shaft abuts on the image sensor seat, and the image sensor seat is oriented toward the lens. Driving force.

The camera device provided by the invention is driven by the motor and the spring to drive the image sensor, so that the lens of the camera device can be focused on the image sensor, thereby realizing the focal length adjustment of the camera device, and the driving structure is simple.

The present invention will be specifically described below with reference to the accompanying drawings.

Referring to FIG. 1 , an imaging device 10 includes a lens 100 , a housing 200 , an image sensor 300 , an image sensor holder 400 , and a motor 500 . The lens 100 is fixedly connected to the casing 200, and the image sensor 300, the image sensor holder 400, and the motor 500 are disposed in the casing 200. In the embodiment, the imaging device 10 is a camera.

The casing 200 includes a front cover 210 and a bottom cover 220, and the lens 100 is fixed on an outer side surface of the front cover 210. A plurality of first guiding holes 211 are formed on the inner side surface of the front cover 210. A connecting portion 212 is formed on a bottom side of the front cover 210, and a first screw hole 2121 is formed in the connecting portion 212. In the present embodiment, two connecting portions 212 are extended on the bottom side of the front cover 210. The bottom cover 220 includes two side walls 221, a bottom wall 222 and a motor mount 223. A second screw hole 2221 is formed on the bottom wall 222, and the second screw hole 2221 corresponds to the first screw hole 2121 on the connecting portion 212 of the front cover 201, so that the front cover can be screwed by screws 210 is fixed to the bottom cover 220. The motor mount 223 is disposed on the bottom wall 222, an opening 2231 is formed in the motor mount 223, and the opening 2231 is for receiving the motor 500. A third screw hole 2232 is formed in each of the motor fixing bases 223 on both sides of the opening 2231, and a first hook portion 2233 is formed on the motor fixing seat 223 below the opening 2231.

The image sensor 300 is fixed on the image sensor base 400. A plurality of second guides are formed on the image sensor base 400 at positions corresponding to the plurality of first guide holes 211. Hole 410. The image sensor holder 400 is connected to the front cover 210 by a plurality of guiding rods 600. After the guiding rod 600 passes through the second guiding hole 410, one end of the guiding rod 600 is inserted into the first guiding hole 211. The other end abuts on the motor mount 221 . The direction of the plurality of guiding rods 600 is parallel to the optical axis direction of the lens 100, so that the image sensor holder 400 can be along the light of the lens 100 on the guiding rod 600 with respect to the front cover 210 Slide in the direction of the axis. A second hook portion 420 is formed on the image sensor base 400 at a position corresponding to the first hook portion 2233, and the first hook portion 2233 and the second hook portion 420 are used by A spring 700 is coupled, and the spring 700 applies a pulling force to the image sensor holder 400 to enable the image sensor holder 400 to slide away from the lens 100.

The motor 500 includes a motor body 510 and a drive shaft 520 that is linearly movable relative to the motor body 510. The motor 500 is disposed in the opening 2231 of the motor mount 223, and the motor 500 can be fixed to the motor mount 223 by screws and the third screw hole 2232. The driving shaft 520 abuts on the image sensor base 400 to activate the motor 500, and the driving shaft 520 can The image sensor holder 400 is given a driving force to slide the image sensor holder 400 toward the lens 100. In the present embodiment, the motor 500 is a stepping motor.

Referring to FIG. 2, when the back focus adjustment is performed on the camera device 10, the motor 500 is started, and the driving shaft 520 of the motor 500 drives the image sensor holder 400 to slide toward the lens 100. When the driving shaft 520 moves backward, the image sensor holder 400 slides away from the lens 100 by the pulling force of the spring 700, and the image sensor holder can be driven by the motor 500 and the spring 700. The image sensor 300 is slid in the optical axis direction of the lens 100 to drive the image sensor 300 fixed on the image sensor base 400 to be slid, so that the lens 100 can be focused on the image sensor 300. The camera device 10 is then adjusted in focus.

The camera device provided by the invention is driven by the motor and the spring to drive the image sensor, so that the lens of the camera device can be focused on the image sensor, thereby realizing the focal length adjustment of the camera device, and the driving structure is simple.

In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100‧‧‧ lens

200‧‧‧Chassis

300‧‧‧Image Sensor

400‧‧‧Image sensor holder

500‧‧‧ motor

600‧‧‧guides

700‧‧‧ Spring

210‧‧‧ front cover

220‧‧‧ bottom cover

410‧‧‧Second guide hole

510‧‧‧ motor body

520‧‧‧Drive shaft

10‧‧‧ camera

FIG. 1 is an exploded view of an image pickup apparatus according to an embodiment of the present invention.

FIG. 2 is an assembled view of an image pickup apparatus according to an embodiment of the present invention.

10‧‧‧ camera

100‧‧‧ lens

300‧‧‧Image Sensor

200‧‧‧Chassis

500‧‧‧ motor

400‧‧‧Image sensor holder

700‧‧‧ Spring

600‧‧‧guides

220‧‧‧ bottom cover

210‧‧‧ front cover

212‧‧‧Connecting Department

211‧‧‧First guide hole

221‧‧‧ side wall

2121‧‧‧First screw hole

223‧‧‧Motor mount

222‧‧‧ bottom wall

2231‧‧‧ openings

2221‧‧‧Second screw hole

2233‧‧‧First hook

2232‧‧‧ Third screw hole

420‧‧‧Second card hook

410‧‧‧Second guide hole

520‧‧‧Drive shaft

510‧‧‧ motor body

Claims (9)

An image capturing device includes a lens, a casing, an image sensor, and a motor, wherein the lens is fixedly connected to the casing, and the image sensor and the motor are disposed in the casing, wherein The casing includes a front cover and a bottom cover, and an image sensor seat is disposed in the casing, and the image sensor is fixed on the image sensor seat, and the image sensor is used by the image sensor a plurality of guiding rods are connected to the front cover, the guiding rods are disposed parallel to the optical axis direction of the lens, and the image sensor holder is slidable on the guiding rod, and the image sensor is used for seating a spring is coupled to the bottom cover, the spring imparts a pulling force to the image sensor seat away from the lens, the motor is fixed on the bottom cover, and the motor includes a driving shaft, The driving shaft abuts on the image sensor seat, and gives the image sensor seat a driving force toward the lens direction. The camera device of claim 1, wherein the camera device is a camera. The image pickup device of claim 1, wherein the lens is fixed to an outer side surface of the front cover. The image pickup device of claim 1, wherein: a plurality of first guide holes are formed on an inner side surface of the front cover, and the image sensor seat corresponds to the first guide hole A second guide hole is formed at the position, and the guide rod passes through the second guide hole, one end is inserted in the first guide hole, and the other end is abutted on the motor. The camera device of claim 1, wherein: the bottom side of the front cover is formed with a connecting portion, a first screw hole is formed on the connecting portion, and the bottom cover further includes two side walls, a bottom wall and a motor mount, the bottom A second screw hole is formed in the wall, the second screw hole corresponds to the first screw hole, and the motor fixing seat is disposed on the bottom wall. The image pickup device of claim 5, wherein the motor mount has an opening formed therein for receiving the motor. The camera device of claim 6, wherein: the motor holder under the opening is formed with a first hook portion, and the image sensor holder corresponds to the first hook portion. A second hook portion is formed at the position, and the spring connects the first hook portion and the second hook portion. The camera device of claim 6, wherein: the motor fixing seat on both sides of the opening is respectively formed with a third screw hole, and the motor can be fixed on the motor fixing seat by screws. The image pickup apparatus according to claim 1, wherein the motor is a stepping motor, and includes a motor body and a drive shaft, and the drive shaft is linearly movable with respect to the motor body.