CN215340491U

CN215340491U - Zoom lens and camera

Info

Publication number: CN215340491U
Application number: CN202120989729.1U
Authority: CN
Inventors: 霍亚敏; 刘自强
Original assignee: Anhui Guangzhi Technology Co Ltd
Current assignee: Anhui Guangzhi Technology Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-12-28
Anticipated expiration: 2031-05-10

Abstract

The utility model provides a zoom lens and a camera, wherein the zoom lens comprises a lens base, a movable lens barrel (7) provided with a floating lens, a motor (5) fixedly connected with the lens base, an outer gear ring (6) sleeved on the outer surface of the movable lens barrel, and an inner gear ring (4) used for manual zooming. The outer gear ring and the movable lens cone form a screw nut mechanism, the inner gear ring and the outer gear ring are coaxially arranged and are sleeved outside the outer gear ring, a motor gear (3) for automatically zooming is installed on an output shaft of the motor, and the motor gear is located between the outer gear ring and the inner gear ring and is meshed with the outer gear ring and the inner gear ring. The zoom lens provided by the utility model adopts a manual-automatic integrated zooming mode, can well meet the personalized zooming requirement of a user, is not influenced by the condition that a motor is not electrified, and has higher convenience.

Description

Zoom lens and camera

Technical Field

The present invention relates to the field of camera technologies, and in particular, to a zoom lens and a camera.

Background

The camera is an apparatus for forming and recording images by using the principle of optical imaging, is an optical instrument for photographing, and mainly comprises a body and a lens. The existing lens is mostly in an electric/automatic zooming mode, but when a shooting subject needs to be selected, the electric/automatic zooming mode is not easy to achieve the individual ideal effect of a user, and the lens loses the zooming function under the condition that a motor is not powered, so that the normal use of the camera is influenced. In summary, how to provide a zoom lens that easily meets the requirement of personalized zooming and is convenient to use becomes a technical problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a zoom lens and a camera, in which the zoom lens employs an integrated manual-automatic zoom mode, so as to meet the personalized zoom requirement of the user, and the zoom lens is not affected by the power-off condition of the motor, and has high convenience.

In order to achieve the purpose, the utility model provides the following technical scheme:

a zoom lens, includes the lens base and installs the removal lens cone of the lens that floats, remove the lens cone with the lens base slidable connection, still include:

the outer gear ring is sleeved on the outer surface of the movable lens cone, and the outer gear ring and the movable lens cone form a screw nut mechanism;

the inner gear ring is used for manual zooming and is coaxially arranged with the outer gear ring and sleeved outside the outer gear ring;

the motor is fixedly connected with the mirror base, a motor gear used for automatically zooming is installed on an output shaft of the motor, the motor gear is located between the outer gear ring and the inner gear ring, and the outer gear ring and the inner gear ring are both meshed with the motor gear.

Optionally, in the zoom lens, the number of the motors is 2 to 5, and the motors are uniformly distributed around the axis of the outer ring gear.

Optionally, in the zoom lens, a potentiometer fixedly connected to the lens holder is further included, a rotation system of the potentiometer includes a potentiometer gear located between the outer gear ring and the inner gear ring, and both the outer gear ring and the inner gear ring are engaged with the potentiometer gear.

Optionally, in the zoom lens described above, an outer surface of the ring gear is provided with raised grains or recessed grains for increasing friction force.

Optionally, in the zoom lens, the zoom lens is an infrared lens.

A camera comprising a zoom lens as disclosed in any one of the above.

According to the technical scheme, the inner gear ring and the outer gear ring are coaxially arranged in the zoom lens provided by the utility model, the inner gear ring is sleeved outside the outer gear ring, the outer gear ring is sleeved on the outer surface of the movable lens barrel and forms a screw rod nut mechanism with the movable lens barrel, and meanwhile, the motor gear is arranged on the output shaft of the motor fixedly connected with the lens base and is positioned between the outer gear ring and the inner gear ring and meshed with the outer gear ring and the inner gear ring, so that the movable lens barrel can be driven by the motor through the motor gear and the outer gear ring and can also be driven by hands through the inner gear ring, the motor gear and the outer gear ring.

Drawings

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a cross-sectional view of a zoom lens provided by an embodiment of the present invention;

FIG. 2 is a perspective view of a zoom lens provided by an embodiment of the present invention.

Labeled as:

1. a main barrel; 2. a hand wheel; 3. a motor gear; 4. an inner gear ring; 5. a motor; 6. an outer ring gear; 7. moving the lens barrel; 8. a potentiometer gear.

Detailed Description

For the purpose of facilitating understanding, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 is a sectional view of a zoom lens provided by an embodiment of the present invention, and fig. 2 is a perspective view of the zoom lens provided by the embodiment of the present invention. The zoom lens provided by the embodiment of the utility model comprises a main lens barrel 1, a movable lens barrel 7 and a lens base, wherein the main lens barrel 1 is used for mounting a first group of lenses of the zoom lens, the movable lens barrel 7 is used for mounting a floating lens, the lens base is fixedly connected with the main lens barrel 1, the movable lens barrel 7 is connected with the lens base in a sliding manner, and the movable lens barrel 7 moves along an axis relative to the lens base so as to change the focal length.

In order to drive the movable lens barrel 7, in the present embodiment, an outer gear ring 6 is sleeved on the outer surface of the movable lens barrel 7, the outer gear ring 6 and the movable lens barrel 7 form a screw nut mechanism, and an inner gear ring 4 is coaxially arranged with the outer gear ring 6, and the inner gear ring 4 is sleeved outside the outer gear ring 6 and used for manual zooming. In addition, a motor 5 is fixedly connected to the mirror base, a motor gear 3 for automatically zooming is mounted on an output shaft of the motor 5, and the motor gear 3 is located between the outer gear ring 6 and the inner gear ring 4 and is in a meshing relationship with the outer gear ring 6 and the inner gear ring 4.

In order to facilitate manual operation, raised grains or concave grains can be arranged on the outer surface of the inner gear ring 4 to increase friction force, as shown in fig. 1 and 2, a hand wheel 2 fixedly connected with the inner gear ring 4 is arranged in the embodiment, the outer surface of the hand wheel 2 is provided with grids divided by circumferential concave grains and axial concave grains, and friction force can be increased when the hand holds the grids. In specific practical application, the inner gear ring 4 and the hand wheel 2 can be of an integrated structure.

The zoom lens provided by the embodiment of the utility model has the following working principle: when the zoom is performed manually, the hand wheel 2 (the inner gear ring 4) is rotated manually, and the outer gear ring 6 is rotated through the transmission of the motor gear 3 to drive the movable lens cone 7 to move, so that the zoom is realized; when the zoom is operated electrically, the motor 5 drives the inner gear ring 4 (the hand wheel 2) and the outer gear ring 6 to rotate together, and the outer gear ring 6 drives the movable lens cone 7 to move, so that the zoom is realized. According to the working principle, the zoom lens provided by the utility model adopts a manual-automatic integrated zooming mode, can well meet the personalized zooming requirement of a user, is not influenced by the condition that a motor is not electrified, and has higher convenience.

In specific practical application, the type of the zoom lens can be an infrared lens, the number of the motors 5 can be set to be 2-5, and in order to balance stress, the motors 5 are generally uniformly distributed around the axis of the outer gear ring 6. For smooth rotation, the motor gear 3 is usually designed as a helical gear. In order to feed back the number of rotation turns of the outer gear ring 6 in time, a potentiometer fixedly connected with the mirror base is further provided in the embodiment, as shown in fig. 2, a rotation system of the potentiometer includes a potentiometer gear 8 located between the outer gear ring 6 and the inner gear ring 4, and both the outer gear ring 6 and the inner gear ring 4 are meshed with the potentiometer gear 8.

The present invention also provides a camera including the zoom lens disclosed in the above embodiment. Since the zoom lens disclosed in the above embodiments has the above technical effects, the camera having the zoom lens also has the above technical effects, and the details are not repeated herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a zoom lens, includes the microscope base and installs removal lens cone (7) of lens that float, removal lens cone (7) with microscope base sliding connection, its characterized in that still includes:

the outer gear ring (6) is sleeved on the outer surface of the movable lens cone (7), and the outer gear ring (6) and the movable lens cone (7) form a screw nut mechanism;

the inner gear ring (4) is used for manual zooming, and the inner gear ring (4) and the outer gear ring (6) are coaxially arranged and sleeved outside the outer gear ring (6);

the lens holder is fixedly connected with a motor (5), an output shaft of the motor (5) is provided with a motor gear (3) used for automatically zooming, the motor gear (3) is positioned between the outer gear ring (6) and the inner gear ring (4), and the outer gear ring (6) and the inner gear ring (4) are both meshed with the motor gear (3).

2. A zoom lens according to claim 1, wherein the number of the motors (5) is 2 to 5 and is uniformly distributed around the axis of the outer ring gear (6).

3. A zoom lens according to claim 1, further comprising a potentiometer fixedly connected to the base, wherein the rotational system of the potentiometer comprises a potentiometer gear (8) between the outer ring gear (6) and the inner ring gear (4), and wherein the outer ring gear (6) and the inner ring gear (4) are both in mesh with the potentiometer gear (8).

4. A zoom lens according to any one of claims 1 to 3, wherein the outer surface of the ring gear (4) is provided with raised or recessed ridges for increasing friction.

5. The zoom lens according to claim 4, wherein the zoom lens is an infrared lens.

6. A camera characterized by comprising the zoom lens according to any one of claims 1 to 5.