Lens barrel with strong high and low temperature adaptability

Abstract

The utility model discloses a lens cone with strong high and low temperature adaptability, a plurality of circular accommodating cavities distributed in a step shape are arranged in the lens cone, positioning steps corresponding to different lenses are formed between the adjacent circular accommodating cavities, a plurality of abutting planes distributed in a ring shape are arranged on the side wall of each circular accommodating cavity in a protruding manner, and the abutting planes are arranged on the side wall of each circular accommodating cavity. The multiple abutting planes are parallel to the axes of the corresponding circular containing cavities, and the inscribed circles of the multiple abutting planes and the corresponding circular containing cavities are coaxially arranged. According to the utility model, the protruding abutting plane is arranged on the side wall of the circular accommodating cavity, so that when the lens is assembled, the inner tangent point of the abutting plane abuts against the side surface of the lens, traditional surface-to-surface contact is changed into point-to-surface contact, the abutting pressure between the lens cone and the lens is reduced when high and low temperatures are changed, and the lens is assembled more stably. The lens is prevented from being pressed to be deviated or damaged, and clear imaging of the lens is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to a lens barrel with strong high and low temperature adaptability. Background Art

[0002] The lens barrel is the outer barrel of the lens used to block light and fix the lens. At present, the lens barrel is generally obtained by injection molding. A circular accommodating cavity is formed inside the lens barrel, and the side wall of the accommodating cavity is formed with positioning steps corresponding to each lens. During assembly, the bottom edge of the lens contacts the positioning step, and the peripheral side of the lens is connected to the side wall of the accommodating cavity with a micro-pitch. Since the lens and the lens barrel will have different degrees of thermal expansion and contraction under different temperature environments, and the side wall of the accommodating cavity adopts a complete circular structure, this structure results in a larger contact area between the side wall of the accommodating cavity and the peripheral side of the lens when the lens is installed. Due to the different materials of the lens and the lens barrel, the deformation amount at different temperatures is also different, which easily leads to the situation that the side wall of the accommodating cavity squeezes the lens, causing the lens to shift or damage, and ultimately leads to blurred imaging of the lens. Utility Model Content

[0003] The utility model aims at the defects of the prior art and provides a lens barrel with strong high and low temperature adaptability, which can improve the adaptability of the lens in high and low temperature environments and ensure the clarity of the lens imaging.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A lens barrel with strong adaptability to high and low temperatures, wherein a plurality of circular storage cavities distributed in a stepped manner are arranged in the lens barrel, positioning steps corresponding to different lenses are formed between adjacent circular storage cavities, and a plurality of abutment planes distributed in an annular manner are convexly arranged on the side wall of each circular storage cavity, and the plurality of abutment planes are parallel to the axis of the corresponding circular storage cavity, and the inscribed circles of the plurality of abutment planes are coaxially arranged with the corresponding circular storage cavity. By arranging a convex abutment plane on the side wall of the circular storage cavity, the inscribed point of the abutment plane abuts against the side of the lens when assembling the lens, and the traditional surface-to-surface contact is changed to point-to-surface contact, thereby reducing the abutment pressure between the lens barrel and the lens when the high and low temperatures change, avoiding the situation where the lens is deflected or damaged by pressure, and ensuring clear imaging of the lens.

[0006] As a preferred technical solution, two opposite sides of each abutting plane are connected to the side wall of the corresponding circular receiving cavity.

[0007] As a preferred technical solution, a plurality of the circular accommodating cavities are coaxially arranged.

[0008] As a preferred technical solution, the side wall of each circular receiving cavity is provided with the same number of abutment planes.

[0009] As a preferred technical solution, the abutment planes in each of the circular accommodating cavities are evenly distributed.

[0010] As a preferred technical solution, the side wall of each of the circular accommodating cavities is provided with eight abutment planes.

[0011] As a preferred technical solution, the abutment planes in different accommodating cavities are arranged in a straight line along the axial direction of the lens barrel.

[0012] As a preferred technical solution, the diameter of the inscribed circle of the plurality of abutting planes is 0.32-0.36 mm smaller than the diameter of the corresponding circular accommodating cavity.

[0013] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, a protruding abutting plane is provided on the side wall of the circular receiving cavity, so that when the lens is assembled, the inscribed point of the abutting plane abuts against the side surface of the lens, thereby changing the traditional surface-to-surface contact into point-to-surface contact, thereby reducing the abutting pressure between the lens barrel and the lens when the high and low temperatures change, avoiding the situation where the lens is pressed off or damaged, ensuring clear imaging of the lens, and improving the high and low temperature adaptability of the lens barrel.

[0014] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the lens barrel structure of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0017] Figure 3 This is a cross-sectional view of the lens installation state of an embodiment of the utility model;

[0018] Figure 4 This is a top view of the lens installation state of the embodiment of the utility model;

[0019] Figure 5 yes Figure 4 A magnified schematic diagram of point B in the middle.

[0020] Description of the accompanying drawings:

[0021] 10. Lens tube 11. Circular storage cavity 12. Positioning step

[0022] 13. Abutment plane 20. Lens. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] First, please refer to Figure 1-2 As shown, a lens barrel 10 with strong adaptability to high and low temperatures is provided in the lens barrel 10 with a plurality of circular receiving cavities 11 distributed in a step shape, the plurality of circular receiving cavities 11 are coaxially arranged, and positioning steps 12 corresponding to different lenses are formed between adjacent circular receiving cavities 11, and the side wall of each circular receiving cavity 11 is convexly provided with a plurality of abutment planes 13 uniformly distributed in annular shapes, the plurality of abutment planes 13 are parallel to the axis of the corresponding circular receiving cavity 11, and the inscribed circles of the plurality of abutment planes 13 are coaxially arranged with the corresponding circular receiving cavity 11, and the diameters of the inscribed circles of the plurality of abutment planes 13 are 0.32 to 0.36 mm smaller than the diameters of the corresponding circular receiving cavities 11.

[0026] Specifically, in this embodiment, the side wall of each circular receiving cavity 11 is provided with eight abutting planes 13, and the opposite sides of each abutting plane 13 are in contact with the side wall of the corresponding circular receiving cavity 11. In order to facilitate the molding of the lens barrel 10, the abutting planes 13 in different receiving cavities are arranged in a straight line along the axis direction of the lens barrel 10. It should be understood that in actual production, the number of abutting planes 13 can also be set to three or more as required; and the abutting planes 13 can also be unevenly distributed.

[0027] like Figure 3-5 As shown, when in use, the lens 20 is installed in the circular receiving cavity 11 corresponding to the lens barrel 10, the edge of the lower surface of the lens 20 overlaps the corresponding positioning step 12, and the inscribed point of the abutting plane 13 abuts against the peripheral side of the lens 20, so that the original surface-to-surface contact between the lens barrel 10 and the lens 20 is transformed into point-to-surface contact.

[0028] In summary, the utility model provides a protruding abutting plane 13 on the side wall of the circular receiving cavity 11, so that when the lens is assembled, the inscribed point of the abutting plane 13 abuts against the side surface of the lens, thereby changing the traditional surface-to-surface contact into point-to-surface contact, thereby reducing the abutting pressure between the lens barrel 10 and the lens when the high and low temperatures change, avoiding the lens from being pressed or damaged, and ensuring clear and stable imaging of the lens.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A lens barrel with strong adaptability to high and low temperatures, wherein a plurality of circular storage cavities distributed in a stepped manner are provided in the lens barrel, and positioning steps corresponding to different lenses are formed between adjacent circular storage cavities, characterized in that: The side wall of each circular receiving cavity is provided with a plurality of abutment planes distributed in an annular shape, the plurality of abutment planes are parallel to the axis of the corresponding circular receiving cavity, and the inscribed circles of the plurality of abutment planes are coaxially arranged with the corresponding circular receiving cavity.

2. A lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: The opposite sides of each abutting plane are connected to the side wall of the corresponding circular receiving cavity.

3. The lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: A plurality of the circular accommodating cavities are coaxially arranged.

4. The lens barrel with strong high and low temperature adaptability according to claim 3, characterized in that: The side wall of each circular receiving cavity is provided with the same number of abutment planes.

5. The lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: The abutment planes in each of the circular accommodating cavities are evenly distributed.

6. The lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: The side wall of each of the circular accommodating cavities is provided with eight abutment planes.

7. The lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: The abutting planes in different accommodating cavities are arranged in a straight line along the axis direction of the lens barrel.

8. The lens barrel with strong high and low temperature adaptability according to claim 1, characterized in that: The diameter of the inscribed circle of the plurality of abutting planes is 0.32-0.36 mm smaller than the diameter of the corresponding circular receiving cavity.

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