CN114942510A - An ultra-thin wide-angle sweeping robot lens - Google Patents

Abstract

The invention discloses an ultrathin wide-angle sweeping robot lens which comprises a lens barrel, an image side surface and an object side surface arranged outside the lens barrel relative to the image side surface, wherein a first lens, a second lens and a third lens are sequentially assembled inside the lens barrel from the object side surface to the image side surface, a lens hole is formed in the position, close to the axis of one end of the object side surface, of the lens barrel 1, one end, close to the image side surface, of the lens barrel is arranged in an open mode, and an IR optical filter is arranged on one side, close to the image side surface, of the lens barrel. The invention solves the difficulties and the defects of the prior art, widens the lens models in the field and enables wide consumers to have more choices; the invention has an ultra-large field angle of 137 degrees, so that the shooting picture is wider; the invention has compact and precise structure, avoids the mutual interference between the lenses and the installation of the same lens cone, avoids the influence of part flash and over-positioning, and increases the quality of the product; the total lens height TTL of the invention is less than or equal to 3.0mm, so that the lens and the sweeping robot are light, thin and small.

Description

An ultra-thin wide-angle sweeping robot lens

technical field

The invention relates to the technical field of imaging lenses, in particular to an ultra-thin wide-angle sweeping robot lens.

Background technique

As a smart home appliance, the sweeping robot can help people to automatically clean the dust on the ground and liberate our hands, but like people, it needs eyes to see the dust on the ground clearly, and the optical lens is its eyes. At present, sweeping robots are loved by more and more people, and they have entered many families and become one of them, which makes the optical lenses suitable for sweeping robots in great demand and broad prospects. Therefore, it is very important to develop a sweeping robot lens. necessary.

At present, the existing traditional single lens has a small field of view, and the field of view is generally below 100°, which cannot identify a wide field of view, has a shooting blind spot, and the overall height of the lens cannot be thinned, which is difficult to meet the needs of the cleaning robot lens.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a lens with a large field of view, the maximum field of view FOV137°, the total height of the lens is TTL ultra-thin, TTL≦3.0mm; 0.62 imaging optical lens, so as to meet the needs of the cleaning robot lens, expand the lens model in this field, better serve the consumers, and solve the problems raised in the above background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an ultra-thin wide-angle sweeping robot lens, comprising a lens barrel, an image side and an object side arranged on the outside of the lens barrel relative to the image side, and the interior of the lens barrel consists of the object side. The first lens, the second lens and the third lens are assembled to the image side in sequence, the lens barrel 1 is provided with a lens hole at the axial position of one end near the object side, and the one end of the lens barrel close to the image side is arranged in an opening shape, and the The side of the lens barrel close to the image side is provided with an IR filter.

The first lens, the second lens and the third lens are all aspherical surfaces, the first lens is arranged in a convex shape on the side close to the object side, the first lens is arranged in a concave shape on the side near the image side, and the first lens A space avoidance groove is arranged between the parting surface on the side close to the object side and the lens hole, the side of the second lens close to the object side is convex, and the side of the second lens close to the image side is concave. The side of the lens 3 close to the object side is convexly arranged, the side of the lens 3 close to the image side is convex, and a dispensing groove is provided between the side of the lens 3 close to the image side and the inner wall of the lens barrel .

The interior of the lens barrel between the second lens and the lens 1 is provided with a shading sheet 1, and the interior of the lens barrel between the second lens and the lens 3 is provided with a shading sheet 2, and the axial positions of the shading sheet 1 and the shading sheet 2 There are through holes for light to pass through.

Preferably, the distance between the side wall of the lens barrel on the side close to the object side and the imaging surface is TTL≦3.0mm, and the focal length EFL≦0.62.

Preferably, the first lens, the second lens and the third lens are all made of plastic material, and the parting surfaces of the second lens and the third lens are all arranged at intervals on the inner wall of the lens barrel.

Preferably, the first lens, the second lens and the third lens are arranged at intervals from each other, the spacing of the intervals is a fixed value, and the spacing is consistent with the thickness of the first and second light-shielding plates.

Preferably, the glue dispensing groove is in a triangular shape, and the outer side of the lens barrel is integrally formed with screw teeth.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention solves the difficulties and deficiencies of the prior art, widens the lens types in this field, and allows consumers to have more choices; the present invention has a large field of view. 137°, which makes the shooting picture wider; the structure of the present invention is compact and precise, and the mutual interference of each lens and the installation of the same lens barrel are avoided, and the influence of over-positioning of parts and over-positioning is avoided, and the quality of the product is increased; The total height of the lens is TTL≦3.0mm, which makes it possible to make the lens and robot vacuum thinner and smaller.

Description of drawings

FIG. 1 is a schematic diagram of the internal structure of the present invention.

In the picture: 1. Lens barrel; 2. Lens 1; 3. Shading sheet 2; 4. IR filter; 5. Image side; 6. Lens 3; 7. Dispensing groove; 8. Shading sheet 1; 9. Lens 2; 10. Lens hole; 11. Evacuation groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1, an embodiment provided by the present invention: an ultra-thin wide-angle sweeping robot lens, including a lens barrel 1, an image side 5 and an object side arranged on the outside of the lens barrel 1 relative to the image side 5, the mirror The interior of the barrel 1 is sequentially equipped with a lens 1 2, a lens 2 9 and a lens 3 6 from the object side to the image side 5. The maximum field of view of the imaging system reaches 137°, which can shoot a wider picture. The lens barrel 1 The distance between the side wall on the side close to the object side and the imaging surface, that is, the total height of the lens is TTL≦3.0mm, and the focal length EFL≦0.62, the lens barrel 1 is provided with a lens hole 10 at the axial position of one end near the object side. , the end of the lens barrel 1 close to the image side is arranged in an opening shape, and the side of the lens barrel 1 close to the image side is provided with an IR filter 4 .

The first lens 2, the second lens 9 and the third lens 6 are aspherical surfaces, and the first lens 2, the second lens 9 and the third lens 6 are made of plastic material, which is convenient for mass production and can improve the production efficiency. The side of the lens one 2 close to the object side is convex, the side of the lens one 2 close to the image side is concave, and the flat position of the lens one 2 close to the object side is attached to the interior of the lens barrel 1. In combination, there is an escape groove 11 between the parting surface of the lens 1 2 near the side of the object and the lens hole 10, which can effectively prevent the two from interfering and over-positioning, and improve the assembly accuracy. The lens 2 9 is close to the side of the object. One side of the lens 2 9 is arranged in a convex shape, the side of the lens 2 9 close to the image side is concave, the side of the lens 3 6 close to the object side is convex, and the side of the lens 3 6 is close to the image side. The side is arranged in a convex shape, and there is a glue dispensing groove 7 between the side of the lens 3 6 close to the image side and the inner wall of the lens barrel 1. The glue dispensing groove 7 is in the shape of a triangle and is used for dispensing and packaging after assembly. The lens barrel 1 The outer side of the lens is integrally formed with screw teeth, which is easy to be assembled with the base, and the parting surfaces of the second lens 9 and the lens 3 The inner wall of the lens barrel 1 is opened to prevent the eccentricity from being affected by the drape, and the assembly accuracy is improved.

The interior of the lens barrel 1 between the second lens 9 and the lens one 2 is provided with a shading sheet 1 8, and the interior of the lens barrel 1 between the second lens 9 and the lens 3 6 is provided with a shading sheet 2 3. Through holes for light to pass through are arranged at the axial positions of the first 8 and the second shading plate 3, and the first lens 2, the second lens 9 and the third lens 6 are arranged at intervals from each other, and the spacing of the intervals is fixed. value, and the spacing is the same as the thickness of the shading sheet 1 8 and the shading sheet 2 3, then the shading sheet 1 8 and the shading sheet 2 3 are not only used for shading, to avoid the influence of stray light, and more importantly, to ensure the adjacent The purpose of the fixed distance between the two lenses is to increase the imaging stability of the lens.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (5)

1. An ultra-thin wide-angle sweeping robot lens, comprising a lens barrel (1), an image side surface (5) and an object side surface arranged outside the lens barrel (1) relative to the image side surface (5), characterized in that: the lens The interior of the barrel (1) is sequentially equipped with a lens (2), a second lens (9) and a third lens (6) from the object side to the image side (5). The lens barrel (1) is close to the axis of one end of the object side. A lens hole (10) is provided at the position, the end of the lens barrel (1) close to the image side is arranged in an opening shape, and the side of the lens barrel (1) close to the image side is provided with an IR filter (4); The first lens (2), the second lens (9) and the third lens (6) are all aspherical surfaces, the first lens (2) is arranged in a convex shape on the side close to the side of the object, and the first lens (2) ) The side close to the side of the image is concave, and the parting surface of the first lens (2) close to the side of the object and the lens hole (10) is provided with a space avoidance groove (11), the second lens (9) ) The side close to the side of the object is convex, the side of the second lens (9) close to the image side is concave, the side of the lens three (6) close to the side of the object is convex, the The side of the lens three (6) close to the image side is convexly arranged, and a dispensing groove (7) is provided between the side of the lens three (6) close to the image side and the inner wall of the lens barrel (1); The lens barrel (1) between the second lens (9) and the lens one (2) is provided with a shading sheet (8), and the lens barrel (1) between the second lens (9) and the third lens (6) is provided. 1) Two light shielding sheets (3) are provided inside, and through holes for light passing through are arranged at the axial positions of the first light shielding sheet (8) and the second light shielding sheet (3). 2. An ultra-thin wide-angle sweeping robot lens according to claim 1, characterized in that: the distance between the side wall of the lens barrel (1) close to the side of the object and the imaging surface is TTL≦3.0mm, and Focal length EFL≦0.62. 3. An ultra-thin wide-angle sweeping robot lens according to claim 1, wherein the first lens (2), the second lens (9) and the third lens (6) are all plastic materials, and the second lens ( 9) and the parting surfaces of the lens three (6) are arranged at intervals on the inner wall of the lens barrel (1). 4. An ultra-thin wide-angle sweeping robot lens according to claim 1, wherein the first lens (2), the second lens (9) and the third lens (6) are all arranged at intervals, and the spaced The size of the spacing is a fixed value, and the size of the spacing is consistent with the thickness of the shading sheet 1 (8) and the shading sheet 2 (3). 5 . The ultra-thin wide-angle sweeping robot lens according to claim 1 , wherein the glue dispensing groove ( 7 ) is triangular in shape, and the outer side of the lens barrel ( 1 ) is integrally formed with screw teeth. 6 .

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