CN106569311A - Structure capable of adjusting coaxiality between optical zoom lens groups - Google Patents

Abstract

The invention discloses a structure capable of adjusting the coaxiality between groups of an optical zoom lens, which has the key points of the technical scheme that the structure comprises a guide shaft adjusting block sleeved on a guide shaft for positioning the groups, wherein the guide shaft adjusting block is arranged on a lens cover, and the left side and the right side of the guide shaft adjusting block are respectively provided with an elastic sheet and an adjustable screw for jacking the guide shaft adjusting block to further push the guide shaft to adjust the coaxiality between the groups. After the lens is assembled, the coaxiality among the groups is detected by projection or real shooting, and if the coaxiality is beyond the range, the mechanism disclosed by the invention can be used for finely adjusting the coaxiality, so that the coaxiality among the groups meets the requirement, the requirement on the resolution uniformity of the lens is realized, the problem of non-uniform resolution of the lens is solved, and the lens is suitable for lens products which need an optical system consisting of a plurality of groups, such as security protection and the like.

Description

A structure capable of adjusting coaxiality between optical zoom lens groups

【Technical field】

The invention relates to a structure of an optical lens, in particular to a structure capable of adjusting the coaxiality between optical zoom lens groups.

【Background technique】

At present, people have higher and higher requirements for the resolution of optical lenses, and stricter requirements for the precision and tolerance of lens design and production. It is difficult for the existing production and processing level to meet these increasingly stringent requirements. In the existing technology, after lens assembly and inspection, it is found that the coaxiality deviation between the lens groups exceeds the range, and the lens cannot be adjusted, and it is directly classified as a defective product, causing a large loss to the factory.

The present invention is made based on this situation.

【Content of invention】

The object of the present invention is to overcome the shortcomings of the prior art, provide an optical lens structure that can adjust the coaxiality after the lens assembly is completed, and realize the uniformity requirement of lens resolution.

The present invention is achieved through the following technical solutions:

A structure that can adjust the coaxiality between optical zoom lens groups is characterized in that it includes a guide shaft adjustment block 2 that is sleeved on the guide shaft 1 for positioning the group, and the guide shaft adjustment block 2 is arranged on the On the lens cover 3, the left and right sides of the guide shaft adjustment block 2 are respectively provided with shrapnels 5 and adjustable screws 4 for pressing the guide shaft adjustment block 2 to further push the guide shaft 1 to adjust the coaxiality between groups.

The structure of the adjustable coaxiality between optical zoom lens groups as described above is characterized in that: the guide shaft adjustment block 2 is positioned in three directions by the shrapnel 5, the guide shaft 1 and the adjustable screw 4. On the said lens cover 3.

As mentioned above, the structure for adjusting the coaxiality between optical zoom lens groups is characterized in that: the guide shaft 1 is perpendicular to the direction formed by the elastic piece 5 and the adjustable screw 4 .

As mentioned above, the structure of the coaxiality between the optical zoom lens groups can be adjusted, and it is characterized in that: the guide shaft adjustment block 2 is provided with an inner groove 201, and the two sides of the inner groove 201 are respectively the left side wall 202 and the right side. wall 203, the guide shaft 1 is closely matched with the inner groove 201, the elastic piece 5 is clamped between the inner wall of the lens cover 3 and the left side wall 202, and the right side wall 203 is covered by the movable Adjust the top pressure of screw 4.

As mentioned above, the structure for adjusting the coaxiality between optical zoom lens groups is characterized in that: the material of the guide shaft adjustment block 2 is plastic.

Compared with prior art, the present invention has following advantage:

1. After the lens assembly is completed, use projection or real shooting to detect the coaxiality between the groups. If the coaxiality is found to be out of range, the mechanism of the present invention can be used to fine-tune the coaxiality to make the coaxiality between the groups The degree meets the requirements, realizes the uniformity of lens resolution requirements, and solves the problem of uneven lens resolution. It is suitable for security and other lens products that require an optical system composed of multiple groups.

2. The present invention is simple in structure and easy to use. Just turn the adjustable screw through a small screw, and the guide shaft adjustment block will be pressed against to drive the guide shaft to move, and further drive the group movement on the guide shaft to realize The adjustment of coaxiality between groups can effectively reduce the dimensional accuracy and tolerance requirements of the single products that make up the lens, make production and control easier, and greatly save costs.

3. The present invention can adjust the coaxiality between the lens groups after the lens assembly is completed, which effectively reduces the number of rework of parts, reduces the waste of resources, and saves costs.

4. The structure of the present invention is simple, the structure itself can be shading, no additional shading structure is required, the structure itself is designed with a dust-proof structure, and no additional dust-proof structure is required to prevent dust, saving material costs and assembly man-hours.

【Description of drawings】

Fig. 1 is the perspective view of lens of the present invention;

Fig. 2 is a sectional view of the lens of the present invention;

Fig. 3 is the enlarged view of place A in Fig. 2;

Fig. 4 is an exploded view of the lens of the present invention.

Among the figure: 1 is the guide shaft; 2 is the guide shaft adjustment block; 201 is the inner groove; 202 is the left side wall; 203 is the right side wall; 3 is the lens cover; 4 is the adjustable screw; 5 is the shrapnel.

【detailed description】

The technical features of the present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can understand.

A structure that can adjust the coaxiality between optical zoom lens groups, as shown in Figures 1 to 4, includes a guide shaft adjustment block 2 that is sleeved on a guide shaft 1 for positioning the group, and the guide shaft The adjustment block 2 is arranged on the lens cover 3, and the left and right sides of the guide shaft adjustment block 2 are respectively provided with shrapnel 5, which are used to press the guide shaft adjustment block 2 to further push the guide shaft 1 to adjust the coaxiality between the groups. Adjustment screw 4. The lens cover 3 especially refers to the lens rear cover. The material of the guide shaft adjustment block 2 can be plastic, and the guide shaft 2 is covered with a plurality of groups, which can be used to adjust the groups by moving one end of the guide shaft 2 coaxiality between them.

As mentioned above, the structure of the coaxiality between the optical zoom lens groups can be adjusted, the guide shaft adjustment block 2 is positioned on the said guide shaft adjustment block 2 from three directions by the shrapnel 5, the guide shaft 1 and the adjustable screw 4. On the lens cover 3 , as shown in FIG. 3 , specifically, the guide shaft 1 is perpendicular to the direction formed by the elastic piece 5 and the adjustable screw 4 .

As mentioned above, the coaxiality structure between the optical zoom lens groups can be adjusted. The guide shaft adjustment block 2 is provided with an inner groove 201, and the two sides of the inner groove 201 are respectively a left side wall 202 and a right side wall 203. The guide shaft 1 is closely matched with the inner groove 201, the elastic sheet 5 is clamped between the inner wall of the lens cover 3 and the left side wall 202, and the right side wall 203 is pushed up by the adjustable screw 4. pressure. The shape of the elastic piece 5 is not limited, as long as it has a certain elastic deformation capacity.

The present invention is simple in structure and easy to use. Just turn the adjustable screw through a small screw, and the guide shaft adjustment block 2 will be pressed against to drive the guide shaft 1 to move. Realizing the adjustment of the coaxiality between groups can effectively reduce the dimensional accuracy and tolerance requirements of the single products that make up the lens, make production and control easier, and greatly save costs.

The above-mentioned relationship between the left and right sides is based on the orientation or positional relationship shown in the drawings of the specification, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations cannot be construed as limiting the specific protection scope of the present invention.

The embodiments described in the present invention are only a description of the preferred implementation of the present invention, and are not intended to limit the concept and scope of the invention. Various modifications and improvements made should fall within the protection scope of the present invention.

Claims (5)

1. between a kind of adjustable Zoom optic lens group axiality structure, it is characterised in that：Include and be enclosed within for positioning Guide shaft regulating block (2) on the guide shaft (1) of group, the guide shaft regulating block (2) is located on lens cap (3), and the guide shaft is adjusted Block (2) be respectively arranged on the left side and the right side shell fragment (5), for top pressure guide shaft regulating block (2) with further promote guide shaft (1) adjust group Between axiality expansion screw (4).

2. according to claim 1, it is characterised in that：Described guide shaft regulating block (2) is by described shell fragment (5), guide shaft (1) it is positioned on described lens cap (3) from three directions with expansion screw (4).

3. the structure of axiality between Zoom optic lens group can adjust according to claim 2, it is characterised in that：It is described to lead The direction that axle (1) is formed with the shell fragment (5), expansion screw (4) is vertical.

4. the structure of axiality between Zoom optic lens group can adjust according to any one of claims 1 to 3, and its feature exists In：Described guide shaft regulating block (2) is provided with inside groove (201), and inside groove (201) both sides are respectively left side wall (202) and right side wall (203), the guide shaft (1) and the inside groove (201) tight fit, the shell fragment (5) is sandwiched in the lens cap (3) inwall and institute State between left side wall (202), the right side wall (203) is by the expansion screw (4) top pressure.

5. the structure of axiality between Zoom optic lens group can adjust according to any one of claims 1 to 3, and its feature exists In：The material of the guide shaft regulating block (2) is plastics.