阅读说明：本技术 一种对焦装置及包含该对焦装置的镜头 (Focusing device and lens comprising same ) 是由 陈洪平 于 2019-06-26 设计创作，主要内容包括：本发明公开了一种对焦装置,包括连接筒和直进筒；所述连接筒外壁上设置有定位柱,直进筒的内壁开设有避让定位柱的避让槽,连接筒通过避让槽与定位柱的配合滑动套入直进筒内,所述直进筒的外壁上开设有与避让槽位置对应的限位条状孔,限位条状孔与避让槽相贯通,所述对焦装置还包括定位柱延长组件,定位柱延长组件一端穿过限位条状孔与定位柱相连接,定位柱延长组件的另一端凸出于直进筒的外壁。本发明还公开了包含上述对焦装置的镜头。本发明通过缩小定位柱的尺寸,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。(The invention discloses a focusing device, which comprises a connecting cylinder and a straight-moving cylinder; the focusing device is characterized in that 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-feeding cylinder, the connecting cylinder is sleeved into the straight-feeding cylinder in a sliding mode through the avoiding groove and the positioning column in a matched mode, a limiting strip-shaped hole corresponding to the avoiding groove is formed in the outer wall of the straight-feeding cylinder, the limiting strip-shaped hole is communicated with the avoiding groove, the focusing device further comprises a positioning column extension assembly, one end of the positioning column extension assembly penetrates through the limiting strip-shaped hole to be connected with the positioning column, and the other end of the positioning column extension. The invention also discloses a lens comprising the focusing device. In addition, as the positioning column extension assembly can be machined by mechanical turning, the dimensional accuracy is higher, and the focusing accuracy is favorably improved.)

1. The utility model provides a focusing device, includes connecting cylinder (2) and straight section of thick bamboo (4), be provided with reference column (3) on connecting cylinder (2) outer wall, the inner wall of straight section of thick bamboo (4) is seted up dodges groove (10) of dodging reference column (3), and connecting cylinder (2) slide through the cooperation of dodging groove (10) and reference column (3) embolias straight section of thick bamboo (4) in, set up on the outer wall of straight section of thick bamboo (4) and dodge spacing strip hole (9) that groove (10) position corresponds, spacing strip hole (9) link up with dodging groove (10) mutually, focusing device still includes reference column extension assembly (7), and reference column extension assembly (7) one end is passed spacing strip hole (9) and is connected with reference column (3), and the other end protrusion in the outer wall of straight section of thick bamboo (4) of locating column extension assembly (7).

2. The focusing device according to claim 1, further comprising a focusing assembly (1), an adjusting cylinder (5) and a base (6), wherein a connecting portion of the focusing assembly (1) is provided with an external thread, an inner wall of the connecting cylinder (2) is provided with an internal thread matched with the external thread of the focusing assembly (1), the focusing assembly (1) is installed on the connecting cylinder (2) through thread matching, the base (6) is fixedly installed at the bottom of the straight-advancing cylinder (4), an inner wall of the adjusting cylinder (5) is provided with an adjusting groove (11) matched with the positioning column extension assembly (7), the adjusting groove (11) extends obliquely on the inner wall of the adjusting cylinder (5), the outer wall of the straight-advancing cylinder (4) is provided with a retaining ring, the adjusting cylinder (5) is rotatably sleeved outside the straight-advancing cylinder (4), and the adjusting cylinder (5) is located between the base (6) and the retaining ring of the straight-advancing cylinder (4), the positioning column extension assembly (7) extends into the adjusting groove (11).

3. Focusing device according to claim 2, characterized in that the base (6) is screwed to the linear cylinder (4).

4. The focusing device according to claim 1, 2 or 3, wherein the positioning post extension element (7) is a sleeve, and the sleeve is sleeved outside the positioning post (3).

5. The focusing device according to claim 4, characterized in that the sleeve and the positioning post (3) are fixed by screws.

6. Focusing device according to claim 5, characterized in that the positioning posts (3) are three in total and evenly distributed on the outer wall of the connecting cylinder (2).

7. A lens barrel comprising the focusing apparatus as claimed in any one of claims 1 to 6.

Technical Field

The invention relates to the field of cameras, in particular to a focusing device and a lens comprising the same.

Background

With the common application of the lens in projectors, industrial detection, intelligent transportation, scanning and copying equipment and photographic cameras, the lens needs to meet the requirements of different object distances, and the lens is required to have a focusing function, namely a focusing structure for adjusting the lens and an image plane is required.

The common focusing devices on the market are all complex in operation, high in cost and troublesome in assembly and disassembly.

Disclosure of Invention

The present invention is directed to a focusing device and a lens assembly including the same, so as to solve the problems of the related art.

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

the utility model provides a focusing device, includes connecting cylinder and straight a section of thick bamboo that advances, be provided with the reference column on the connecting cylinder outer wall, the inner wall of straight a section of thick bamboo of advancing is seted up and is dodged the groove of dodging of reference column, and the connecting cylinder slides through the cooperation of dodging groove and reference column and embolias straight a section of thick bamboo of advancing in, set up the spacing strip hole that corresponds with dodging the trench position on the outer wall of straight a section of thick bamboo of advancing, spacing strip hole link up with dodging the groove mutually, focusing device still includes reference column extension subassembly, and reference column extension subassembly one end is passed spacing strip hole and is connected with the reference column, and the other end protrusion.

as a further scheme of the invention: still including focusing the subassembly, adjusting a section of thick bamboo and base, the connecting portion of focusing the subassembly are 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, and the subassembly of focusing passes through screw-thread fit and installs on the connecting cylinder, 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 a 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.

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 positioning column extension assembly is a sleeve, and the sleeve is sleeved outside the positioning column.

As a still further scheme of the invention: the sleeve and the positioning column are fixed through screws.

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.

A lens comprises the focusing device.

Compared with the prior art, the invention has the beneficial effects that: in addition, as the positioning column extension assembly can be machined by mechanical turning, the dimensional accuracy is higher, and the focusing accuracy is favorably improved.

Drawings

Fig. 1 is a schematic structural diagram of a focusing device.

FIG. 2 is a cross-sectional view of a focusing device.

FIG. 3 is a schematic structural diagram of a connecting tube in the focusing device.

FIG. 4 is a schematic structural diagram of an adjusting cylinder in the focusing device.

FIG. 5 is a schematic structural diagram of a linear motion barrel in a focusing apparatus.

FIG. 6 is a schematic structural diagram of a base in the focusing device.

In the figure: 1-focusing component, 2-connecting cylinder, 3-positioning column, 4-straight-moving cylinder, 5-adjusting cylinder, 6-base, 7-positioning column extension component, 8-screw, 9-limiting strip-shaped hole, 10-avoiding groove and 11-adjusting groove.

Detailed Description

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