Wide-angle lens for sweeper

Abstract

The utility model discloses a wide-angle lens for a sweeper, which belongs to the technical field of camera shooting of sweeping robots and comprises a lens barrel, and a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are mounted in the lens barrel and are sequentially arranged from an object space to an image space along the optical axis direction, the fifth lens is set to be concave, and the sixth lens is set to be convex, so that the visual angle range of an original wide-angle lens can be enlarged, the wide-angle lens can conveniently identify a wide-view field, a shooting blind area cannot be generated, and the lens requirement of the sweeping robot can be met. The first spacer ring, the second spacer ring, the third spacer ring and the fourth spacer ring are arranged to maintain the spacing between the lenses, ensure the performance and quality of an optical system, ensure the accurate distance between the two adjacent lenses, and facilitate the optimization of the propagation path of light, thereby improving the imaging performance of the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of camera technology of a sweeping robot, in particular to a wide-angle lens for a sweeping robot. Background Art

[0002] As a smart home appliance, the sweeping robot can help people automatically clean the dust on the ground and free our hands. However, like humans, it needs eyes to see the dust on the ground, and the optical lens is its eyes. At present, the sweeping robot is loved by more and more people and has entered many families and become one of them. As a result, the demand for optical lenses suitable for sweeping robots is high and the prospects are broad. Therefore, it is very necessary to develop a sweeping robot lens.

[0003] The existing traditional single lens has a small field of view, which is generally below 100°. It cannot recognize a wide field of view and has shooting blind spots, making it difficult to meet the lens requirements of sweeping robots.

[0004] According to announcement number CN114578527A, an ultra-wide-angle lens is proposed, comprising: a first lens with negative optical power, a second lens with negative optical power, a third lens with negative optical power, a fourth lens with positive optical power, a fifth lens with positive optical power, a sixth lens with negative optical power, a seventh lens with positive optical power, and a protective plate glass, arranged in sequence along the optical axis from the object side to the image side; an aperture is located between the third lens and the fourth lens or between the fourth lens and the fifth lens; the shape of the third lens in the paraxial region is concave-concave or concave-convex; the shape of the fourth lens in the paraxial region is convex-convex or convex-concave; and the shape of the sixth lens in the paraxial region is convex-concave or concave-concave. The ultra-wide-angle lens of the present invention not only meets the requirements of large field of view, miniaturization, and high resolution, but also can achieve day and night parfocality, achieve image capture with a maximum field of view angle of 172°, and maintain focus within a temperature range of -40°C to 80°C.

[0005] According to the above introduction, the field of view of the lens is small. The field of view is generally below 100°, which cannot recognize the wide field of view and has a shooting blind spot. It is difficult to meet the lens requirements of a sweeping robot. In order to solve the above problems, a wide-angle lens for a sweeping robot is proposed. Utility Model Content

[0006] The purpose of the present utility model is to provide a wide-angle lens for a sweeping robot, which can expand the field of view of a single lens, reduce the blind spot of shooting, and adapt to the use scenarios of the sweeping robot to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a wide-angle lens for a sweeper, comprising a lens barrel and a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens installed in the lens barrel and arranged in sequence from the object side to the image side along the optical axis, the fifth lens being configured to be concave-concave, and the sixth lens being configured to be convex-convex.

[0008] By adopting the above technical solution, the viewing angle range of the original wide-angle lens can be increased, which makes it easier for the wide-angle lens to identify wide-viewing fields and can meet the lens requirements of a sweeping robot.

[0009] Preferably, the first lens and the second lens are both configured as convex-concave, and the third lens and the fourth lens are both configured as convex-convex.

[0010] By adopting the above technical solution, the field of view of the lens is expanded, and the sweeping robot performs cleaning, thereby reducing the possibility of blind spots in shooting.

[0011] Preferably, a first spacer ring is installed between the second lens and the third lens, a second spacer ring is installed between the third lens and the fourth lens, a third spacer ring is installed between the fourth lens and the fifth lens, and a fourth spacer ring is installed between the fifth lens and the sixth lens.

[0012] By adopting the above technical solution, the spacing between lenses is maintained, the performance and quality of the optical system are ensured, the precise distance between two adjacent lenses is ensured, which helps to optimize the propagation path of light and thus improve the imaging performance of the lens.

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

[0014] By adopting the above technical solution, the first lens is set as a glass lens to achieve the effect of brightening, and the remaining lenses are set as plastic lenses, mainly to achieve a specific optical effect and reduce costs.

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

[0016] By adopting the above technical solution, the lens can be waterproof and protected.

[0017] Preferably, a glass protection sheet is installed at the other end of the inner wall of the lens barrel, and the glass protection sheet is close to the position of the sixth lens.

[0018] By adopting the above technical solution, the protection effect of the lens installed in the lens barrel is improved, and the perspective effect and anti-aging effect of the glass protection sheet are both good.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The utility model provides a wide-angle lens for a sweeping robot. By setting the fifth lens to a concave-concave type and the sixth lens to a convex-convex type, the viewing angle range of the original wide-angle lens can be further increased, thereby facilitating the wide-angle lens to identify a wide field of view without generating a shooting blind spot, and being able to meet the lens requirements of a sweeping robot.

[0021] 2. The utility model provides a wide-angle lens for a sweeper. The presence of the first spacer ring, the second spacer ring, the third spacer ring and the fourth spacer ring ensure the precise distance between two adjacent lenses, which helps to optimize the propagation path of light and thus improve the imaging performance of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0024] Figure 3 For this utility model Figure 1 Enlarged structural diagram at point B in the middle.

[0025] Numbers in the figure: 1, pressure cap; 2, lens barrel; 3, first lens; 4, second lens; 5, first spacer; 6, third lens; 7, second spacer; 8, fourth lens; 9, third spacer; 10, fifth lens; 11, fourth spacer; 12, sixth lens; 13, glass protection plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides Figures 1 to 3The wide-angle lens for a sweeping machine shown in the figure includes a lens barrel 2 and a first lens 3, a second lens 4, a third lens 6, a fourth lens 8, a fifth lens 10 and a sixth lens 12 installed in the lens barrel 2 and arranged in sequence from the object side to the image side along the optical axis. The fifth lens 10 is set to a concave-concave type, and the sixth lens 12 is set to a convex-convex type. By setting the fifth lens 10 to a concave-concave type and the sixth lens 12 to a convex-convex type, the viewing angle range of the original wide-angle lens can be further increased, thereby facilitating the wide-angle lens to identify a wide field of view, without generating a shooting blind spot, and being able to meet the lens requirements of a sweeping robot. The first lens 3 and the second lens 4 are both set to a convex-concave type, and the third lens 6 and the fourth lens 8 are both set to a convex-convex type, which can cooperate with the fifth lens 10 and the sixth lens 12 to increase The large shooting viewing angle range enables the wide-angle lens to capture a wider range of scenes. At the same time, the perspective effect enhancement of the wide-angle lens can better emphasize the foreground and highlight the near-far contrast, thereby enhancing the three-dimensional sense and spatial sense of the picture. A first spacer ring 5 is installed between the second lens 4 and the third lens 6, a second spacer ring 7 is installed between the third lens 6 and the fourth lens 8, a third spacer ring 9 is installed between the fourth lens 8 and the fifth lens 10, and a fourth spacer ring 11 is installed between the fifth lens 10 and the sixth lens 12. The existence of the first spacer ring 5, the second spacer ring 7, the third spacer ring 9 and the fourth spacer ring 11 is used to maintain the interval between the lenses, ensure the performance and quality of the optical system, ensure the precise distance between two adjacent lenses, and help optimize the propagation path of light, thereby improving the imaging performance of the lens.

[0028] The first lens 3 is configured as a glass lens. Since the first lens 3 is arranged outside, the material is configured as a glass lens. Glass lenses have the characteristics of high light transmittance and are not easy to age. The second lens 4, the third lens 6, the fourth lens 8, the fifth lens 10 and the sixth lens 12 are all configured as plastic lenses. Plastic lenses have the advantages of strong plasticity, easy to make into aspherical shapes and low cost.

[0029] A pressure cap 1 is installed at one end of the outer wall of the lens barrel 2. The position of the pressure cap 1 is close to the position of the first lens 3. The setting of the pressure cap 1 can protect the lens installed in the lens barrel 2 and prevent the lens inside the lens from being impacted or contaminated by the outside world.

[0030] A glass protection sheet 13 is installed at the other end of the inner wall of the lens barrel 2. The glass protection sheet 13 is close to the position of the sixth lens 12 to improve the protection effect of the lenses installed in the lens barrel 2. The glass protection sheet 13 has good perspective effect and anti-aging effect.

[0031] During specific use, the first lens 3, the second lens 4, the third lens 6, the fourth lens 8, the fifth lens 10 and the sixth lens 12 are first arranged in sequence from the object side to the image side according to the direction of the optical axis and installed in the lens barrel 2. Then, the first spacer ring 5 is installed between the second lens 4 and the third lens 6, the second spacer ring 7 is installed between the third lens 6 and the fourth lens 8, the third spacer ring 9 is installed between the fourth lens 8 and the fifth lens 10, and the fourth spacer ring 11 is installed between the fifth lens 10 and the sixth lens 12. The presence of the first spacer ring 5, the second spacer ring 7, the third spacer ring 9 and the fourth spacer ring 11 is used to maintain the interval between the lenses, ensure the performance and quality of the optical system, ensure the precise distance between two adjacent lenses, help to optimize the propagation path of light, and thus improve the imaging performance of the lens. In particular, the fifth lens 10 is set to a concave-concave type and the sixth lens 12 is set to a convex-convex type, so that the viewing angle range of the original wide-angle lens can be further increased, thereby facilitating the wide-angle lens to identify a wide field of view, without generating a shooting blind spot, and can meet the lens requirements of a sweeping robot.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wide-angle lens for a sweeping machine, comprising a lens barrel (2) and a first lens (3), a second lens (4), a third lens (6), a fourth lens (8), a fifth lens (10) and a sixth lens (12) mounted in the lens barrel (2) and arranged in sequence along the optical axis from the object side to the image side, characterized in that: The fifth lens (10) is configured as a concave-concave type, the sixth lens (12) is configured as a convex-convex type, the first lens (3) and the second lens (4) are both configured as convex-concave types, the third lens (6) and the fourth lens (8) are both configured as convex-convex types, a first spacer ring (5) is installed between the second lens (4) and the third lens (6), a second spacer ring (7) is installed between the third lens (6) and the fourth lens (8), a third spacer ring (9) is installed between the fourth lens (8) and the fifth lens (10), and a fourth spacer ring (11) is installed between the fifth lens (10) and the sixth lens (12).

2. The wide-angle lens for a sweeper according to claim 1, characterized in that: The first lens (3) is configured as a glass lens, and the second lens (4), the third lens (6), the fourth lens (8), the fifth lens (10) and the sixth lens (12) are all configured as plastic lenses.

3. The wide-angle lens for a sweeper according to claim 2, characterized in that: A pressure cap (1) is installed at one end of the outer wall of the lens barrel (2), and the position of the pressure cap (1) is close to the position of the first lens (3).

4. The wide-angle lens for a sweeper according to claim 3, characterized in that: A glass protection sheet (13) is installed at the other end of the inner wall of the lens barrel (2), and the glass protection sheet (13) is close to the position of the sixth lens (12).

Images