Large-aperture and large-angle lens device and robot

Abstract

The utility model discloses a large-aperture and large-angle lens device and a robot, which belong to the technical field of lens devices, and comprise a lens barrel, and a first lens sheet, a second lens sheet, a third lens sheet, a fourth lens sheet and a fifth lens sheet which are mounted in the lens barrel and are sequentially arranged from an object side to an image side along an optical axis direction, the fourth lens sheet is concave, the fifth lens sheet is concave, the fourth lens sheet is concave, the fifth lens sheet is concave, the fourth lens sheet is concave, the fifth lens sheet is concave, the fourth lens sheet and the fifth lens sheet are concave, the wider visual effect can be obtained, the light inlet amount can be provided for the lens device through the enlargement of the aperture, the shooting depth of field of the lens is reduced, and the main body can be protruded; the large angle can enlarge the shooting range and reduce the possibility of blind areas in the shooting process, the first lens sheet is set to be convex-concave, the second lens sheet is set to be convex-convex, and the third lens sheet is set to be concave-concave, so that the visual angle range can be enlarged, and a scene with a larger range can be shot.

Description

Technical Field

[0001] The utility model relates to the technical field of lens devices, in particular to a lens device and a robot with a large aperture and a large angle. Background Technique

[0002] The lens device is an important part of optical instruments and is widely used in fields such as photography, monitoring, and machine vision. The lens device can collect and converge the light entering the lens and form an image on the imaging medium.

[0003] When the existing lens device is in use, the field of view angle of the product is 20° to 30°, the observable field of view is small, the shooting range is limited, the shooting effect of the lens device is reduced, and at the same time, the size of the aperture will also affect the light input effect of the lens.

[0004] A wide-angle large-aperture glass-plastic hybrid lens proposed according to the publication number: CN106873132A, characterized in that: from the object surface to the image surface, there are sequentially arranged: a first lens, a diaphragm, a second lens, the second lens, a third lens, a fourth lens, and a filter. The first lens is a negative focal length lens, the second lens is a positive focal length aspherical plastic lens, the third lens is a negative focal length aspherical plastic lens, and the fourth lens is a positive focal length aspherical plastic lens. This wide-angle large-aperture glass-plastic hybrid lens increases the aperture from the common F2.2 and F2.0 to F1.6, and the larger aperture improves the brightness of the picture and better realizes the monitoring effect.

[0005] According to the above introduction, when the lens device is in use, the field of view angle of the product is 20° to 30°, the observable field of view is small, the shooting range is limited, the aperture of the lens is small, which will affect the light input amount of the lens, resulting in a low relative illumination of the lens image plane and affecting the shooting effect. In order to solve the above-mentioned problems, a lens device and a robot with a large aperture and a large angle are thus proposed. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a lens device and a robot with a large aperture and a large angle. By setting the fourth lens element as a concave-concave type and the fifth lens element as a concave-concave type, a broader visual effect can be obtained, and the aperture is increased, improving the light input amount of the lens, providing better brightness for the lens device, reducing the depth of field of the lens shooting, being able to highlight the main body, and the increased angle can expand the shooting range, reducing the possibility of shooting blind spots in the lens shooting, so as to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A lens device and a robot with a large aperture and a large angle, comprising a lens barrel and a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from the object side to the image side along the optical axis direction in the lens barrel. The fourth lens is arranged as a concave-concave type, and the fifth lens is arranged as a concave-concave type. An aperture stop is arranged between the first lens and the second lens, and the first lens is arranged as a negative lens with thick ends and thin middle.

[0008] By adopting the above technical solutions, the lens device can obtain a broader visual effect, and the aperture is increased, and the light input of the lens is improved.

[0009] Preferably, a first spacer is installed between the aperture stop and the second lens, a second spacer is installed between the second lens and the third lens, a third spacer is installed between the third lens and the fourth lens, and a fourth spacer is installed between the fourth lens and the fifth lens.

[0010] By adopting the above technical solutions, the presence of the first spacer, the second spacer, the third spacer and the fourth spacer ensures the precise distance between two adjacent lenses, which helps to optimize the light propagation path, thereby improving the imaging performance of the lens.

[0011] Preferably, the second lens is arranged as a convex-convex type, and the third lens is arranged as a concave-concave type.

[0012] By adopting the above technical solutions, the viewing angle range can be expanded, so that a larger range of scenes can be photographed.

[0013] Preferably, the first lens is arranged as a glass lens, and the second lens, the third lens, the fourth lens and the fifth lens are all plastic lenses.

[0014] By adopting the above technical solutions, the convex surface of the first lens is made of glass material, and the remaining lenses are made of plastic lenses mainly to achieve specific optical effects and reduce costs.

[0015] Preferably, a retaining cap is installed at one end of the outer wall of the lens barrel, and the position of the retaining cap is close to the position of the first lens.

[0016] By adopting the above technical solutions, it can play a role in waterproofing the lens and protecting the lens.

[0017] Preferably, the curvature of the convex surface on the object side of the first lens is greater than the curvature of the convex surface on the object side of the second lens, and the first lens is arranged as a convex-concave type.

[0018] By adopting the above technical solution, the concave and convex curvature sizes of the set lens can determine the effect of the lens on light, and the convex surface of the lens can converge light rays.

[0019] The present utility model also provides a robot, including a lens device with a large aperture and a large angle described above, and further including a robot body, and the lens barrel is installed on the top of the robot body.

[0020] By adopting the above technical solution, the robot body can drive the lens device with a large aperture and a large angle to move in position, thereby facilitating the lens device to take pictures.

[0021] Compared with the prior art, the beneficial effects of the present utility model are:

[0022] 1. The present utility model provides a lens device with a large aperture and a large angle and a robot. By setting the first lens sheet as a negative lens with thick ends and thin middle, it has the effect of diverging light rays. Through the set diaphragm, it plays a crucial role in the restriction of the light beam, the improvement of imaging quality, and the control of light energy. The fourth lens sheet is set as a concave-concave type, and the fifth lens sheet is set as a concave-concave type, so as to obtain a broader visual effect, increase the aperture, improve the light input of the lens, provide better brightness for the lens device, reduce the depth of field of the lens shooting, be able to highlight the subject, and the increased angle can expand the shooting range and reduce the possibility of shooting blind areas in lens shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is an exploded schematic diagram of the lens structure of the present utility model.

[0025] Reference numerals in the figure: 1. Lens barrel; 2. First lens; 3. Diaphragm; 4. First gasket; 5. Second lens sheet; 6. Second gasket; 7. Third lens sheet; 8. Third gasket; 9. Fourth lens sheet; 10. Fourth gasket; 11. Fifth lens sheet; 12. Compression cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model provides as Figures 1 to 2A lens device with a large aperture and a large angle, including a lens barrel 1 and a first lens 2, a second lens 5, a third lens 7, a fourth lens 9, and a fifth lens 11 arranged in sequence from the object side to the image side along the optical axis direction in the lens barrel 1. The fourth lens 9 is set as a concave-concave type, and the fifth lens 11 is set as a concave-concave type. An aperture stop 3 is arranged between the first lens 2 and the second lens 5. The first lens 2 is set as a negative lens with thick ends and thin middle. By setting the first lens 2 as a negative lens with thick ends and thin middle, it has the effect of diverging light. Through the arranged aperture stop 3, it plays a crucial role in the limitation of the light beam, the improvement of the imaging quality, and the control of the light energy. The fourth lens 9 is set as a concave-concave type, and the fifth lens 11 is set as a concave-concave type, which increases the shooting angle of the lens device, enables the lens device to expand the shooting range, reduces the possibility of shooting blind areas when the lens is shooting, can obtain a wider visual effect, and increases the aperture, improves the light input of the lens, can provide better brightness for the lens device, reduces the depth of field of the lens shooting, and can highlight the main body.

[0028] A first spacer 4 is installed between the aperture stop 3 and the second lens 5, a second spacer 6 is installed between the second lens 5 and the third lens 7, a third spacer 8 is installed between the third lens 7 and the fourth lens 9, and a fourth spacer 10 is installed between the fourth lens 9 and the fifth lens 11. The existence of the set first spacer 4, second spacer 6, third spacer 8, and fourth spacer 10 ensures the precise distance between adjacent two lenses, helps to optimize the light propagation path, and thus improves the imaging performance of the lens.

[0029] The second lens 5 is set as a convex-convex type, and the third lens 7 is set as a concave-concave type, which can expand the viewing angle range, so as to shoot a larger range of scenes.

[0030] The first lens 2 is set as a glass lens. The glass material has the characteristics of high light transmittance and not easy to age. The second lens 5, the third lens 7, the fourth lens 9, and the fifth lens 11 are all plastic lenses. The plastic lenses have the advantages of strong plasticity, easy to be made into aspherical shapes, and low cost.

[0031] A retaining cap 12 is installed at one end of the outer wall of the lens barrel 1. The position of the retaining cap 12 is close to the position of the first lens 2, which can play a role in waterproofing and protecting the lens for the lenses installed in the lens barrel 1.

[0032] The curvature of the convex surface on the object side of the first lens 2 is greater than the curvature of the convex surface on the object side of the second lens 5. The first lens 2 is set as a convex-concave type. By setting the size of the convex and concave curvatures of the lens, it can determine the effect of the lens on light. The convex surface of the lens can converge light.

[0033] The present utility model also provides a robot, which includes a lens device with a large aperture and a large angle described above, and further includes a robot body, and the lens barrel 1 is installed on the top of the robot body.

[0034] By adopting the above technical solution, the robot body can drive the lens device with a large aperture and a large angle to move in position, so as to facilitate the lens device to take pictures.

[0035] Specifically, the internal mechanism, moving mode, and driving mode of the robot body are prior arts, and their specific structures and operating principles will not be elaborated here. For example, the robot disclosed in the patent document with the application number CN201920686869.4.

[0036] In specific use, first, the first lens 2, the second lens 5, the third lens 7, the fourth lens 9, and the fifth lens 11 are arranged in sequence from the object side to the image side along the optical axis direction. The first lens 2 is set as a negative lens with thick ends and thin middle, which has the effect of diverging light. The material of the first lens 2 is set as a glass lens. The glass material has the characteristics of high light transmittance and not easy to age, which can provide a protective effect on the outer end position of the lens device. The fourth lens 9 is set as a concave-concave type, and the fifth lens 11 is set as a concave-concave type, so as to obtain a wider visual effect, and increase the aperture, providing a better brightening effect on the lens device, improving the brightness, reducing the depth of field, highlighting the main body, and the increased angle can expand the shooting range, avoiding shooting blind spots. And gaskets are installed between adjacent lenses. The existence of the first gasket 4, the second gasket 6, the third gasket 8, and the fourth gasket 10 ensures the accurate distance between adjacent two lenses, which helps to optimize the light propagation path, thereby improving the imaging performance of the lens.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lens device with a large aperture and a large angle, comprising a lens barrel (1) and a first lens element (2), a second lens element (5), a third lens element (7), a fourth lens element (9) and a fifth lens element (11) which are arranged in sequence from the object side to the image side along the optical axis direction and are installed in the lens barrel (1), and is characterized in that: The fourth lens (9) is configured as a concave-concave type, the fifth lens (11) is configured as a concave-concave type, a diaphragm (3) is disposed between the first lens (2) and the second lens (5), and the first lens (2) is configured as a negative lens with thick ends and thin middle.

2. The lens device with a large aperture and a large angle according to claim 1, characterized in that: A first spacer (4) is installed between the diaphragm (3) and the second lens (5), a second spacer (6) is installed between the second lens (5) and the third lens (7), a third spacer (8) is installed between the third lens (7) and the fourth lens (9), and a fourth spacer (10) is installed between the fourth lens (9) and the fifth lens (11).

3. The lens device with a large aperture and a large angle according to claim 2, characterized in that: The second lens (5) is configured as a convex-convex type, and the third lens (7) is configured as a concave-concave type.

4. The lens device with a large aperture and a large angle according to claim 3, characterized in that: The first lens (2) is configured as a glass lens, and the second lens (5), the third lens (7), the fourth lens (9) and the fifth lens (11) are all plastic lenses.

5. The lens device with a large aperture and a large angle according to claim 4, characterized in that: A retaining cap (12) is installed at one end of the outer wall of the lens barrel (1), and the position of the retaining cap (12) is close to the position of the first lens (2).

6. The lens device with a large aperture and a large angle according to claim 5, characterized in that: The curvature of the object-side convex surface of the first lens (2) is greater than the curvature of the object-side convex surface of the second lens (5), and the first lens (2) is configured as a convex-concave type.

7. A robot, comprising the large-aperture and wide-angle lens device according to any one of claims 1-6, characterized in that: It includes a robot body, and the lens barrel (1) is installed on the top of the robot body.

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