阅读说明：本技术 一种自动对焦装置及包含该自动对焦装置的自动对焦镜头 (Automatic focusing device and automatic focusing lens comprising same ) 是由 陈洪平 于 2019-06-26 设计创作，主要内容包括：本发明公开了一种自动对焦装置,包括直进筒、连接筒、调节筒、底座、驱动电机和对焦组件,所述连接筒外壁上设置有定位柱；通过缩小连接筒上定位柱的尺寸,使直进筒上无需开设完全贯通的避让槽,从而使直进筒的强度得以提升,另外,由于定位柱延长组件可以通过机械车削加工,其尺寸精度更高,从而有利于提升对焦精度。本发明还公开了包含上述自动对焦装置的自动对焦镜头,由于该自动对焦镜头包含上述自动对焦装置,上述自动对焦装置定位柱精度较高使得镜头的精度得到了提升,上述的直进筒强度较高,使得镜头的使用寿命得到了提升。(The invention discloses an automatic focusing device which comprises a straight-in cylinder, a connecting cylinder, an adjusting cylinder, a base, a driving motor and a focusing assembly, wherein a positioning column is arranged on the outer wall of the connecting cylinder; through reducing the size of the locating column on the connecting cylinder, the straight advance section of thick bamboo is gone up and need not to set up the groove of dodging that link up completely to make the intensity of the straight advance section of thick bamboo promote, in addition, because the locating column extension subassembly can be through machine turning, its size precision is higher, thereby is favorable to promoting the precision of focusing. The invention also discloses an automatic focusing lens comprising the automatic focusing device, and the automatic focusing lens comprises the automatic focusing device, so that the precision of the lens is improved due to the higher precision of the positioning column of the automatic focusing device, and the service life of the lens is prolonged due to the higher strength of the straight-moving cylinder.)

1. An automatic focusing device comprises a straight-in cylinder (1), a connecting cylinder (2), an adjusting cylinder (3), a base (6), a driving motor (7) and a focusing assembly (8), wherein the outer wall of the connecting cylinder (2) is provided with a positioning column (201), and the automatic focusing device is characterized in that the inner wall of the straight-in cylinder (1) is provided with an avoiding groove (101) avoiding the positioning column (201), the connecting cylinder (2) is slidably sleeved into the straight-in cylinder (1) through the matching of the avoiding groove (101) and the positioning column (201), the outer wall of the straight-in cylinder (1) is provided with a limiting strip-shaped hole (102) corresponding to the avoiding groove (101), the limiting strip-shaped hole (102) is communicated with the avoiding groove (101), the automatic focusing device further comprises a positioning column extension assembly (4), one end of the positioning column extension assembly (4) penetrates through the limiting strip-shaped hole (102) to be connected with the positioning column (201), the other end of the positioning column extension component (4) protrudes out of the outer wall of the straight-moving cylinder (1); the focusing device is characterized in that a connecting part of the focusing assembly (8) is provided with an external thread, the inner wall of the connecting cylinder (2) is provided with an internal thread matched with the external thread of the focusing assembly (8), the focusing assembly (8) is installed on the connecting cylinder (2) in a thread matching manner, the base (6) is fixedly installed at the bottom of the straight-in cylinder (1), the inner wall of the adjusting cylinder (3) is provided with an adjusting groove (301) matched with the positioning column extension assembly (4), the adjusting groove (301) obliquely extends on the inner wall of the adjusting cylinder (3), the outer wall of the straight-in cylinder (1) is provided with a retaining ring, the adjusting cylinder (3) is rotatably sleeved outside the straight-in cylinder (1), the adjusting cylinder (3) is positioned between the base (6) and the retaining ring of the straight-in cylinder (1), the positioning column extension assembly (4) extends into the adjusting groove (301), the side wall of the straight-in cylinder (1, the base (6) is provided with a mounting seat, the motor fixing locking hole (103) is matched with the mounting seat to install the driving motor (7), and the driving motor (7) is connected with the adjusting cylinder (3) in a driving mode.

2. Autofocus device according to claim 1, characterized in that the positioning post extension element (4) is a sleeve.

3. Autofocus device according to claim 1 or 2, characterized in that the positioning posts (201) are three in number and are evenly distributed over the outer wall of the connecting cylinder (2).

4. The autofocus device according to claim 1 or 2, wherein the positioning post extension assembly (4) is fixed to the positioning post (201) by a screw (5).

5. Autofocus device according to claim 1 or 2, characterized in that the base (6) is fixed to the linear cylinder (1) by means of screws (5).

6. The automatic focusing device according to claim 1 or 2, wherein the outer wall of the adjusting cylinder (3) is provided with a gear ring, the output end of the driving motor (7) is provided with a gear matched with the gear ring, and the gear is meshed with the gear ring.

7. Autofocus device according to claim 1 or 2, characterized in that the upper end of the outer wall of the adjusting cylinder (3) is provided with a PI stop.

8. An autofocus lens comprising the autofocus device of any of claims 1 to 7.

9. auto-focus lens according to claim 8, characterized in that the selected focus component (8) is an M12 screw interface lens.

Technical Field

The present invention relates to a focusing device, and more particularly, to an automatic focusing device and an automatic focusing lens including the same.

Background

With the progress of the era and the development of society, the industrial field of us has entered the era of automation and informatization. The lens is also widely applied in numerous fields such as vehicle-mounted, intelligent transportation, aerial photography, security monitoring and the like along with the development of science and technology. The lens has an automatic focusing function for solving the problem that the lens can adapt to different object distances.

The existing automatic focusing device is long in the length of the positioning column on the outer wall of the connecting cylinder, a completely through avoiding opening needs to be formed in the side wall of the straight-going cylinder, the strength of the straight-going cylinder is reduced, the positioning column of the existing focusing device is generally formed by injection molding with the connecting cylinder in an integrated mode, the size precision of the positioning column is low, and the focusing precision is affected.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide an automatic focusing device and an automatic focusing lens comprising the same, so as to solve the problems mentioned in the background art.

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

An automatic focusing device comprises a straight-in cylinder, a connecting cylinder, an adjusting cylinder, a base, a driving motor and a focusing assembly, wherein a positioning column is arranged on the outer wall of the connecting cylinder, an avoiding groove for avoiding the positioning column is formed in the inner wall of the straight-in cylinder, the connecting cylinder is sleeved into the straight-in cylinder in a sliding mode through the matching of the avoiding groove and the positioning column, a limiting strip-shaped hole corresponding to the avoiding groove is formed in the outer wall of the straight-in cylinder and communicated with the avoiding groove, the automatic focusing device further comprises a positioning column extension assembly, one end of the positioning column extension assembly is connected with the positioning column through the limiting strip-shaped hole, and the other end of the positioning column extension assembly protrudes out of the outer wall of the straight-in; the connecting portion of the subassembly of focusing is provided with the external screw thread, and the connecting cylinder inner wall is seted up and is focused subassembly external screw thread matched with internal thread, focuses the subassembly and installs on the connecting cylinder through screw-thread fit, base fixed mounting is in the bottom of directly advancing a section of thick bamboo, adjust a section of thick bamboo inner wall and set up the adjustment tank with reference column extension subassembly matched with, the adjustment tank extends in the inner wall slope of adjusting a section of thick bamboo, is provided with the retaining ring on the directly advancing section of thick bamboo outer wall, adjusts a section of thick bamboo rotation cover and establishes outside directly advancing a section of thick bamboo, and adjusts a section of thick bamboo and be located between base and the directly advancing section of thick bamboo retaining ring, reference column extension subassembly stretches into the adjustment tank, still be provided with the motor fixed lock on the lateral wall of directly advancing a section of thick bamboo.

As a further scheme of the invention: the positioning column extension assembly is a sleeve.

As a still further scheme of the invention: the positioning columns are three in number and are evenly distributed on the outer wall of the connecting cylinder.

As a still further scheme of the invention: the positioning column extension assembly is fixed with the positioning column through screws.

As a still further scheme of the invention: the base and the straight-moving cylinder are fixed through screws.

As a still further scheme of the invention: the outer wall of the adjusting cylinder is provided with a gear ring, the output end of the driving motor is provided with a gear matched with the gear ring, and the gear is meshed with the gear ring.

As a still further scheme of the invention: and a PI baffle is arranged at the upper end of the outer wall of the adjusting cylinder.

An automatic focusing lens comprises the automatic focusing device.

As a still further scheme of the invention: the focusing assembly selected was an M12 screw interface lens.

Compared with the prior art, the invention has the beneficial effects that: through reducing the size of reference column, need not to set up the groove of dodging that link up completely on making the straight section of thick bamboo that advances to make the intensity of the straight section of thick bamboo that advances promote, in addition, because reference column extension subassembly can be through machine turning processing, its size precision is higher, thereby is favorable to promoting the precision of focusing.

Drawings

Fig. 1 is a cross-sectional view of an automatic focusing apparatus of the present invention.

FIG. 2 is an exploded view of the auto-focusing apparatus of the present invention.

Fig. 3 is a schematic structural view of the linear cylinder.

Fig. 4 is a schematic structural view of the connector barrel.

Fig. 5 is a schematic structural diagram of the adjusting cylinder.

Fig. 6 is a schematic structural view of the base.

In the figure: the device comprises a 1-straight-in cylinder, a 101-avoidance groove, a 102-limit strip-shaped hole, a 103-motor fixing locking hole, a 2-connecting cylinder, a 201-positioning column, a 3-adjusting cylinder, a 301-adjusting groove, a 302-PI baffle, a 4-positioning column extension assembly, a 5-screw, a 6-base, a 7-driving motor and an 8-focusing assembly.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.