CN112327561A

CN112327561A - Image plane adjustment device and zoom lens

Info

Publication number: CN112327561A
Application number: CN202011348474.7A
Authority: CN
Inventors: 何均顺; 凌云辉; 刘伟龙; 聂路鑫
Original assignee: Sunny Optics Zhongshan Co Ltd
Current assignee: Sunny Optics Zhongshan Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-02-05

Abstract

The invention relates to an image plane adjusting device and a zoom lens, wherein the image plane adjusting device comprises a fixed cylinder (1), a pin shaft (2) connected with the fixed cylinder (1) and a tail plate (3) rotatably connected with the pin shaft (2), a photosensitive chip (4) is installed on the tail plate (3), a transmission part (5) is fixedly connected to one side of the tail plate (3), the transmission part (5) is connected with a driving device (6), and the driving device (6) drives the transmission part (5) and the tail plate (3) to rotate around the pin shaft (2). The image plane adjusting device can solve the problem that the image plane of the existing zoom lens cannot be adjusted in an inclined mode.

Description

Image plane adjusting device and zoom lens

Technical Field

The invention belongs to the technical field of optics, and relates to an image plane adjusting device and a zoom lens.

Background

With the development of the intelligent transportation industry, the security monitoring lens is more and more widely used in the intelligent transportation. The image plane of the traditional automatic zoom lens cannot be inclined, the lens has a depth of field problem generally when being used, the foreground and the background in the picture shot by the lens are easily blurred, and the experience of a user is seriously influenced.

On the other hand, the image plane of the driven automatic zoom lens is fixed and perpendicular to the optical axis of the lens, so that the installation mode of the lens in use is extremely limited, the lens cannot be suitable for different installation environments, and the use range of the road monitoring lens is severely limited.

Disclosure of Invention

The present invention is directed to solve the above problems, and an object of the present invention is to provide an image plane adjustment device and a zoom lens, which solve the problem that the image plane of the conventional zoom lens cannot be adjusted obliquely.

In order to achieve the purpose, the invention provides an image plane adjusting device which comprises a fixed cylinder, a pin shaft connected with the fixed cylinder and a tail plate rotationally connected with the pin shaft, wherein a photosensitive chip is mounted on the tail plate, a transmission part is fixedly connected to one side of the tail plate, the transmission part is connected with a driving device, and the driving device drives the transmission part and the tail plate to rotate around the pin shaft.

According to one aspect of the invention, the driving device comprises a power piece, an adjusting plate connected with the power piece and a guide shaft;

the adjusting plate is slidably mounted on the guide shaft, one end of the adjusting plate is connected with the power part, the other end of the adjusting plate is provided with a sliding groove, the extending direction of the sliding groove is perpendicular to the direction of the guide shaft, and the opening of the sliding groove is positioned on one side far away from the guide shaft. .

According to one aspect of the invention, one end of the adjusting plate is connected with the power part, the other end of the adjusting plate is provided with a sliding chute, the extending direction of the sliding chute and the direction of the guide shaft form an inclined included angle, and the opening of the sliding chute is positioned on one side far away from the guide shaft.

According to one aspect of the invention, the included angle of inclination is between 10 ° and 45 °.

According to one aspect of the invention, one end of the transmission part, which is far away from the tail plate, is connected with a pin, and one end of the pin is embedded into the sliding groove and is in sliding connection with the sliding groove.

According to one aspect of the present invention, the driving device further includes a guide jaw having one end connected to the power member and the other end connected to one end of the adjustment plate.

According to one aspect of the invention, the power member is provided as a stepper motor.

According to one aspect of the invention, the fixed cylinder is further provided with a PI resetting device, and the adjusting plate is further provided with a PI baffle matched with the PI resetting device.

According to one aspect of the invention, the rotation angle of the tail plate and the pin shaft ranges from-30 degrees to 30 degrees.

The invention also provides a zoom lens comprising the image plane adjusting device, which comprises a fixed group, a zoom group and a focusing group which are sequentially arranged in the fixed cylinder along the optical axis direction, wherein the image plane adjusting device is positioned behind the focusing group.

According to the image plane adjusting device, the driving part can be driven to move by the driving device, the driving part is connected with the tail plate, and the tail plate is rotatably connected with the pin shaft, so that when the driving part moves, the tail plate can be driven to rotate relative to the pin shaft, and the tail plate is provided with the photosensitive chip.

On the other hand, the image plane adjusting device can realize that a certain included angle is formed between the image plane and the optical axis, and by utilizing the advantage, a shot object does not need to be ensured to be vertical to the optical axis of the lens in the assembling process of the lens, so that the mounting mode of the lens is more flexible and changeable, and the device can be suitable for various mounting environments, thereby expanding the application range of the lens.

Drawings

Fig. 1 is a schematic view showing the construction of an image plane adjusting apparatus according to an embodiment of the present invention;

FIG. 2 schematically shows a configuration diagram of a zoom lens according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 1, the present invention provides an image plane adjusting device, according to an embodiment of the present invention, the image plane adjusting device of the present invention includes a fixed cylinder 1 and a pin 2 fixedly connected to the fixed cylinder 1, the pin 2 is connected to the fixed cylinder 1 along a radial direction of the fixed cylinder 1, a tail plate 3 rotatably connected to the pin 2 is supported on the pin 2, and a photosensitive chip 4 is mounted on the tail plate 3. One side of the tail plate 3 of the invention is fixedly connected with a transmission piece 5 at the lower side as shown in figure 1, the transmission piece 5 is connected with a driving device 6, and the driving device 6 drives the transmission piece 5 and the tail plate 3 to rotate around the pin shaft 2.

According to the image plane adjusting device, the driving part 5 can be driven to move by the driving device 6, the driving part 5 is connected with the tail plate 3, the tail plate 3 is rotatably connected with the pin shaft 2, when the driving part 5 moves, the tail plate 3 can be driven to rotate relative to the pin shaft 2, and the tail plate 3 is provided with the photosensitive chip 4, so that after the image plane adjusting device and the lens component are assembled, a certain included angle can be formed between an image plane and a lens optical axis, the conventional principle that the image plane of the existing lens is perpendicular to the optical axis is broken through, the depth of field problem of the lens is effectively solved, and the user experience is favorably improved.

As shown in fig. 1, according to one embodiment of the present invention, the driving device 6 of the present invention includes a power member 61, an adjusting plate 62 connected to the power member 61, and a guide shaft 63. According to an embodiment of the present invention, the power member 61 of the driving device 6 is configured as a stepping motor, and the stepping motor has high stepping precision and fast rotation speed, thereby being beneficial to ensuring the accuracy and rapidity of the rotation process of the tail plate 3. Of course, the choice of the power member 61 is not limited according to the concept of the present invention, and for example, a cylinder, a motor, etc. may be used instead.

As shown in fig. 1, the adjusting plate 62 of the present invention is slidably mounted on the guide shaft 63 according to an embodiment of the present invention, and in this embodiment, two guide shafts 63 are provided to ensure the moving stability of the adjusting plate 62 on the guide shaft 63. One end of the adjusting plate 62 of the present invention is connected to the power member 61, and the other end is provided with a sliding slot 621, the extending direction of the sliding slot 621 is perpendicular to the direction of the guiding shaft 63, and the opening of the sliding slot 621 is located at a side far away from the guiding shaft 63. Taking the guide shaft 63 as an example in the vertical direction, in the present embodiment, the extending direction of the chute 621 is the horizontal front-rear direction, and the opening of the chute 621 faces the right side.

According to the second embodiment of the present invention, the extending direction of the sliding slot 621 may have an inclined angle with the direction of the guiding shaft, and according to an embodiment of the present invention, the inclined angle is in the range of 10 ° to 45 °, so that the rotation of the driving transmission member 5 and the tail plate 3 around the pin 2 can be more conveniently realized.

Meanwhile, one end of the transmission piece 5, which is far away from the tail plate 3, is connected with a pin 7, and one end of the pin 7 is embedded into the sliding groove 621 and is in sliding connection with the sliding groove 621.

So, can provide drive power through power piece 61, drive adjusting plate 8 and reciprocate along guiding axle 8, and because be equipped with spout 621 on the adjusting plate 62 to the front end of connecting the pin 7 at driving medium 5 lower extreme is embedded into in spout 621 with spout 621 sliding connection, thereby can drive the action of driving medium 5, and then realizes that tailboard 3 realizes image plane angle adjustment for the rotation of round pin axle 2. According to the image plane adjusting device, the rotation angle range of the tail plate 3 and the pin shaft 2 is-30 degrees. In the angle range, the angle of the image plane can be adjusted, and the final imaging quality of the lens can be ensured.

According to another embodiment of the present invention, the driving device 6 further includes a guide jaw 8, and one end of the guide jaw 8 is connected to the power member 61 and the other end is connected to one end of the adjustment plate 62. That is, in the present embodiment, the adjustment plate 62 and the power element 61 are not directly connected but connected by the guide claws 8, and thus the structure of the adjustment plate 62 is relatively simple, and if the adjustment plate 62 and the power element 62 are directly connected, the structure is relatively complicated and problems such as interference need to be considered.

As shown in fig. 1, according to an embodiment of the present invention, the fixed cylinder 1 of the present invention is further provided with a PI resetting device 9, and the adjusting plate 62 is further provided with a PI stop 622 that cooperates with the PI resetting device 9. With the arrangement, the image plane adjusting device has a resetting function, when the power part 61 drives the adjusting plate 62 to move up and down, the PI baffle 622 moves along with the PI baffle 622, and when the PI baffle 622 passes through the PI resetting device 9, the power part 61 stops rotating, and the resetting function of the image plane adjusting device is completed.

As shown in fig. 2, the present invention further provides a zoom lens comprising the image plane adjusting device, which includes a fixed group a, a zoom group b, and a focus group c sequentially arranged in the fixed cylinder 1 along the optical axis direction, wherein the image plane adjusting device is located behind the focus group c.

According to an embodiment of the present invention, the fixed group a is locked on the fixed cylinder 1 by screws, and the zoom group b and the focus group c can move along the optical axis direction to realize the zoom function and the focus function of the zoom lens, so that the lens can be focused and clearly imaged at different object distances. The image plane adjusting device is located behind the focusing group c, as described above, the image plane adjusting function of the zoom lens can be realized, and a certain included angle can be formed between the image plane and the optical axis of the zoom lens as required.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an image plane adjusting device, its characterized in that, including solid fixed cylinder (1), with round pin axle (2) that solid fixed cylinder (1) is connected, with round pin axle (2) rotate tailboard (3) of connecting, install sensitization chip (4) on tailboard (3), one side fixedly connected with driving medium (5) of tailboard (3), driving medium (5) are connected with drive arrangement (6), drive arrangement (6) drive driving medium (5) and tailboard (3) wind round pin axle (2) rotate.

2. The image plane adjusting device as claimed in claim 1, wherein the driving device (6) comprises a power member (61), an adjusting plate (62) connected to the power member (61), and a guide shaft (63);

adjusting plate (62) slidable mounting be in on guide shaft (63), adjusting plate (62) one end with power piece (61) is connected, and the other end is equipped with spout (621), the extending direction of spout (621) with the direction of guide shaft (63) is perpendicular, and the opening of spout (621) is located keeps away from one side of guide shaft (63).

3. The image plane adjusting device as claimed in claim 1, wherein one end of the adjusting plate (62) is connected to the power member (61), the other end is provided with a sliding slot (621), the extending direction of the sliding slot (621) forms an inclined angle with the direction of the guiding shaft (63), and the opening of the sliding slot (621) is located on the side away from the guiding shaft (63).

4. An image plane adjusting device as claimed in claim 3, wherein the inclined angle is 10 ° -45 °.

5. The image plane adjusting device as claimed in claim 2 or 3, wherein a pin (7) is connected to one end of the transmission member (5) away from the tail plate (3), and one end of the pin (7) is embedded in the sliding groove (621) and is in sliding connection with the sliding groove (621).

6. The image plane adjusting device as claimed in claim 2 or 3, wherein the driving device (6) further comprises a guide claw (8), one end of the guide claw (8) is connected to the power member (61), and the other end is connected to one end of the adjusting plate (62).

7. An image plane adjusting device as claimed in claim 2 or 3, wherein the power member (61) is provided as a stepping motor.

8. The image plane adjusting device as claimed in claim 2 or 3, wherein the fixed cylinder (1) is further provided with a PI resetting device (9), and the adjusting plate (62) is further provided with a PI baffle (622) matched with the PI resetting device (9).

9. The image plane adjusting device as claimed in claim 1, wherein the rotation angle of the tail plate (3) and the pin shaft (2) ranges from-30 degrees to 30 degrees.

10. A zoom lens comprising the image plane adjusting apparatus according to any one of claims 1 to 9, comprising a fixed group (a), a variable magnification group (b), and a focus group (c) which are arranged in the fixed barrel (1) in the optical axis direction in this order, the image plane adjusting apparatus being located behind the focus group (c).