Strip-shaped light spot forming lens, lens system and line scanning code reader

Abstract

The utility model relates to the technical field of lighting devices, and discloses a strip-shaped light spot forming lens, a lens system and a line scanning code reader. The strip-shaped light spot forming lens comprises an elliptical cup body, a connecting piece, a strip-shaped prism body and a light inlet structure, the light inlet structure is integrally formed at the bottom of the oval cup body and comprises a bottom hollow structure and a top special-shaped structure arranged at the top of the bottom hollow structure, and the top special-shaped structure is of a symmetrical structure; the light inlet structure is used for primarily molding light rays emitted by the luminous body; the elliptical cup body is used for shaping the light rays preliminarily shaped by the light inlet structure to form elliptical light spots; the connecting piece is arranged at the top of the elliptical cup body; the strip-shaped prism body is arranged at the top of the connecting piece and used for changing the propagation direction of the light in the oval cup body to form strip-shaped light spots. According to the strip-shaped light spot forming lens, the light path is changed to form the strip-shaped light spots, and the problems of light energy waste, side wall light waste, light pollution and optical crosstalk caused by round light spots of a code scanner are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting devices, in particular to a strip-shaped light spot forming lens, a lens system and a line scanning code reader. BACKGROUND

[0002] The code reader is mainly based on optical scanning and signal conversion technology, and a bar code or a two-dimensional code is irradiated by an emission light source such as a laser or an LED lamp. Compared with a common code reader, the line scanning code reader is special in that it generally takes a picture of only one line (the line width is usually 1-2 pixels) at a time. In use, the line scanning code reader continuously takes pictures of lines at high speed and then "aggregates lines into a plane", and the lines taken each time are combined to form a complete picture. The illumination light source plays a role of illuminating and supplementing light when the code reader is shooting, and therefore the light spot irradiated by the illumination light source is best capable of meeting the imaging range and having good uniformity, so as to improve the imaging quality.

[0003] The existing code reader illumination light spot mainly has two types: the first type is a light source installed in the code reader, and the light source is a lamp bead that emits light to form a circular light spot through an illumination lens; and the second type is an external strip-shaped light source, and the principle is that the strip-shaped light source arranged linearly controls the light intensity to form a strip-shaped light spot under the adjustment of an external light source controller.

[0004] However, the light spot of the light source installed in the code reader is circular, and when applied to the line scanning code reader that images in the form of "line", a large part of the light is wasted, and there is also a problem of light pollution; the external strip-shaped light source cannot be integrated into the code reader, and a light source controller needs to be matched externally, which has a complex structure and is cumbersome to assemble. CONTENT OF THE INVENTION

[0005] The technical problem to be solved by the present application is to optimize the existing code reader illumination light source, change the light path imaging strip-shaped light spot, solve the problems of light energy waste, side wall light waste, light pollution, light interference and the like caused by the circular light spot, and design the illumination light source in the code reader to facilitate installation and carrying.

[0006] In order to solve the above problems, in a first aspect, the present application provides a strip-shaped light spot forming lens applied to a line scanning code reader, comprising: an elliptical cup body, a connecting piece, a strip-shaped prism body and a light inlet structure;

[0007] The light inlet structure is integrally formed at the bottom of the elliptical cup body, the light inlet structure comprises a bottom hollow structure and a top special-shaped structure arranged at the top of the bottom hollow structure, and the top special-shaped structure is a symmetrical structure; the light inlet structure is used for preliminarily shaping the light emitted by a light emitter; and the elliptical cup body is used for shaping the light preliminarily shaped by the light inlet structure into an elliptical light spot;

[0008] The connecting piece is arranged on the top of the elliptical cup body.

[0009] The strip-shaped prism body is arranged on the top of the connecting piece, and the strip-shaped prism body is used for changing the propagation direction of the light rays of the elliptical light spot emitted in the elliptical cup body to form a strip-shaped light spot.

[0010] In some embodiments, the top special-shaped structure is in an upward convex arc shape at the top of the light inlet surface in the X-axis direction of the elliptical cup body, and the top special-shaped structure is in a camel hump-like structure convexly protruding downward at the bottom of the light inlet surface in the X-axis direction of the elliptical cup body.

[0011] In some embodiments, the camel hump-like structure includes at least two valley structures.

[0012] In some embodiments, the top special-shaped structure is in a downward concave arc shape at the top of the light inlet surface in the Y-axis direction of the elliptical cup body, and the top special-shaped structure is in a downward concave arc shape at the bottom of the light inlet surface in the Y-axis direction of the elliptical cup body.

[0013] In some embodiments, the horizontal cross section of the bottom hollow structure is elliptical.

[0014] In some embodiments, the side wall of the elliptical cup body is in an arc shape with inconsistent bending radii, the outer side of the side wall of the elliptical cup body has a reflective coating, and the outer side of the side wall of the elliptical cup body is in a frosted surface.

[0015] In some embodiments, the strip-shaped prism body includes a plurality of triangular strip-shaped prisms arranged at intervals on the top of the connecting piece.

[0016] In some embodiments, the top of the triangular strip-shaped prism has a circular arc-shaped connecting portion.

[0017] In a second aspect, the application further provides a lens system including a plurality of strip-shaped light spot forming lenses as described in the first aspect and any one of the embodiments of the first aspect, and the plurality of strip-shaped light spot forming lenses are arranged in a preset manner.

[0018] In a third aspect, the application further provides a line scanning code reader including a strip-shaped light spot forming lens as described in the first aspect and any one of the embodiments of the first aspect, or including a lens system as described in the second aspect and any one of the embodiments of the second aspect.

[0019] Compared with the prior art, the application has at least one of the following beneficial technical effects:

[0020] The light emitted by the light emitter passes through the light inlet structure into the elliptical cup body, and the light inlet structure preliminarily shapes the light into an elliptical light spot. The elliptical light spot irradiates on the cup wall of the elliptical cup body, and the elliptical cup body performs secondary shaping on the elliptical light spot to change the light path and form an elliptical light spot with a required size. The connecting piece is used to connect the elliptical cup body and the strip-shaped prism body, the strip-shaped prism body is the main structure for forming a strip-shaped light spot, and the strip-shaped prism body changes the propagation direction of the light of the elliptical light spot emitted from the elliptical cup body to deflect to the left and right to form a strip-shaped light spot. Therefore, the existing code reader illuminating lens is optimized to change the light path to form a strip-shaped light spot, solve the problems of light energy waste, side wall light waste, light pollution, light cross and the like caused by the circular light spot in the prior art, and the illuminating lens is designed in the code reader, thereby facilitating installation and carrying. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 A structure schematic diagram of the strip-shaped light spot forming lens in the first view angle in the embodiment of the present application;

[0023] Figure 2 A structure schematic diagram of the strip-shaped light spot forming lens in the second view angle in the embodiment of the present application;

[0024] Figure 3 An A-A cross-sectional schematic diagram of the strip-shaped light spot forming lens in the embodiment of the present application;

[0025] Figure 4 A B-B cross-sectional schematic diagram of the strip-shaped light spot forming lens in the embodiment of the present application;

[0026] Figure 5 A top view schematic diagram of the connecting piece and the strip-shaped prism body of the strip-shaped light spot forming lens in the embodiment of the present application;

[0027] Figure 6 A front view of the connecting piece and the strip-shaped prism body of the strip-shaped light spot forming lens in the embodiment of the present application.

[0028] Explanation of reference signs: 1, light inlet structure; 11, top special-shaped structure; 12, bottom hollow structure; 2, elliptical cup body; 3, connecting piece; 4, strip-shaped prism body; 41, inclined surface; 42, connecting part. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0030] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0031] It should also be understood that the terms used in the present specification and the appended claims are only for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should be further understood that the term "and / or" as used in the present specification and the appended claims is intended to mean any combination of one or more of the associated listed items and all possible combinations thereof.

[0033] Reference should be made to Figures 1 to 4 , wherein Figure 1 is a structural schematic diagram of a bar-shaped light spot forming lens in a first view angle in the embodiments of the present application; Figure 2 is a structural schematic diagram of a bar-shaped light spot forming lens in a second view angle in the embodiments of the present application; Figure 3 is an A-A cross-sectional schematic diagram of a bar-shaped light spot forming lens in the embodiments of the present application; Figure 4 is a B-B cross-sectional schematic diagram of a bar-shaped light spot forming lens in the embodiments of the present application. The present application provides a bar-shaped light spot forming lens, which is arranged in a line scanning code reader. Specifically, the illumination lens comprises an elliptical cup body 2, a connecting piece 3, a strip-shaped prism body 4 and a light inlet structure 1. The light inlet structure 1 is integrally formed at the bottom of the elliptical cup body 2, the light inlet structure 1 comprises a bottom hollow structure 12 and a top special-shaped structure 11 arranged at the top of the bottom hollow structure 12, and the top special-shaped structure 11 is a symmetrical structure; the light inlet structure 1 is used for preliminarily shaping the light emitted by a light emitter; the elliptical cup body 2 is used for shaping the light preliminarily shaped by the light inlet structure 1 into an elliptical light spot; the connecting piece 3 is arranged at the top of the elliptical cup body 2; the strip-shaped prism body 4 is arranged at the top of the connecting piece 3, and the strip-shaped prism body 4 is used for changing the propagation direction of the light of the elliptical light spot emitted from the elliptical cup body 2 to form a bar-shaped light spot.

[0034] In the embodiment, the light emitter is a lamp bead. In other embodiments, the light emitter can be other light sources.

[0035] Here, the light inlet structure 1 includes a bottom hollow structure 12 and a top special-shaped structure 11 arranged on the top of the bottom hollow structure 12, and the top special-shaped structure 11 is a symmetrical structure. The light inlet structure 1 is integrally formed on the bottom of the elliptical cup body 2. The light emitted by the light emitter passes through the light inlet structure 1 and the elliptical cup body 2 in sequence, and can form an elliptical light spot. This special-shaped light spot can better adapt to the shape and size of a bar code or a two-dimensional code, and improve the accuracy and efficiency of code scanning. Compared with a circular light spot, the elliptical light spot can more accurately cover the bar code area, reduce light waste, and enhance the ability to collect bar code information. Here, the light emitted by the light emitter passes through the light inlet structure 1 and enters the elliptical cup body 2. The light inlet structure 1 first preliminarily shapes the light. The preliminarily shaped light is irradiated to the cup wall of the elliptical cup body 2, and then is shaped again by the elliptical cup body 2 to change the light path and form an elliptical light spot of a required size.

[0036] The connecting piece 3 is used to connect the elliptical cup body 2 and the strip-shaped prism body 4. The strip-shaped prism body 4 is the main structure for forming a strip-shaped light spot. The strip-shaped prism body 4 changes the propagation direction of the light emitted from the elliptical cup body 2, so that the light is deflected to the left and right to form a strip-shaped light spot. This structure design helps to reflect, refract and scatter the light, so that the finally formed elliptical light spot has a more uniform light intensity distribution on the bar code surface. This can avoid the over-bright or over-dark of some areas of the bar code due to uneven light, thereby improving the recognition ability of the code scanner to the bar code information and reducing the error rate.

[0037] Therefore, the lens structure in the existing line scanning code reader is optimized to change the light path to form a strip-shaped light spot, solve the problems of light energy waste, side wall light waste, light pollution, and light interference caused by the circular light spot in the prior art, and design the illumination lens inside the code reader, which is convenient for installation and carrying.

[0038] Moreover, please refer to Figures 1 to 4 The top special-shaped structure 11 in the light inlet structure 1 is similar to the principle of a convex lens, can collect the light at the edge position, and diffuse the light at the center outward, so as to buffer the effect of the light emitted by the light emitter, which has high center brightness and low edge brightness, to weaken the center brightness and increase the edge brightness, and preliminarily improve the uniformity of the brightness in the long direction.

[0039] Compared with the simple hollow elliptical cylindrical light-incident structure, the special curved shape of the top special-shaped structure 11 can perform more complex refraction and reflection on the light, so that the light can be more accurately preliminarily adjusted towards the direction of forming an elliptical light spot before entering the elliptical cup body 2, further improving the accuracy and efficiency of light shaping, and reducing the scattering and waste of light. The symmetrically arranged top special-shaped structures 11 can uniformly distribute the light to the two sides at the top of the bottom hollow structure 12, avoiding the concentration of light in certain specific areas, so that the preliminarily formed light spot is more uniform in light intensity distribution. It can provide more favorable light conditions for the subsequent secondary shaping of the elliptical cup body 2 and the conversion of the elliptical light spot into a strip-shaped light spot by the strip-shaped prism body 4, so that the entire light path system is more efficient and accurate in changing the direction of light propagation and forming a specific shape light spot, and better solves the problems of light energy waste, side wall light waste, light pollution, and light pollution in the prior art.

[0040] Please refer to Figure 3 and Figure 4 In a specific embodiment, the top special-shaped structure 11 is in an upward convex arc shape at the top of the light-incident surface in the X-axis direction of the elliptical cup body, and the top special-shaped structure is in a camel hump-like structure convexly protruding downward at the bottom of the light-incident surface in the X-axis direction of the elliptical cup body. Specifically, the camel hump-like structure includes at least two valley structures.

[0041] The light-incident surface in the X-axis direction of the elliptical cup body corresponds to the long side direction of the final strip-shaped light spot, at this time the top special-shaped structure 11 is in an upward convex arc shape (specifically a circular arc shape) at the top of the light-incident surface in the X-axis direction of the elliptical cup body, and the top special-shaped structure is in a camel hump-like structure convexly protruding downward at the bottom of the light-incident surface in the X-axis direction of the elliptical cup body. The convex part of the camel hump-like structure can collect light at the edge position due to the principle of convex lens, and the central concave structure of the camel hump-like structure diffuses the light at the center outward, the cooperation of the two structures can buffer the effect of high center brightness and low edge brightness of the light emitted by the light-emitting body in the X-axis direction, reduce the center brightness and increase the edge brightness, and preliminarily improve the uniformity of the brightness in this direction. The camel hump-like structure includes at least two valley structures, such as two valley structures, four valley structures, or an even number of valley structures.

[0042] Please refer to Figure 3 and Figure 4 In a specific embodiment, the top special-shaped structure 11 is in an upward convex arc shape at the top of the light-incident surface in the X-axis direction of the elliptical cup body, and the top special-shaped structure is in a camel hump-like structure convexly protruding downward at the bottom of the light-incident surface in the X-axis direction of the elliptical cup body. Specifically, the camel hump-like structure includes at least two valley structures.

[0043] The light-incident surface of the Y-axis direction of the elliptical cup corresponds to the short side direction of the final bar-shaped light spot. At this time, the top of the top-shaped structure 11 is in an arc shape (similar to a crescent) that is concave downward along the light-incident surface of the Y-axis direction of the elliptical cup, and the bottom of the top-shaped structure is in an arc shape (similar to a crescent) that is concave downward along the light-incident surface of the Y-axis direction of the elliptical cup. The above shape is beneficial to the convergence of the light rays irradiated thereon, reduces the light ray divergence range in the X-axis direction from the light emitter, and is beneficial to the formation of the short side of the bar-shaped light spot.

[0044] Please refer to Figures 1 to 4 In a specific embodiment, the side wall of the elliptical cup 2 is an arc shape with inconsistent bending radii. Specifically, the side wall of the elliptical cup 2 is designed to be an arc shape with inconsistent bending radii according to the inconsistent light reflection angles at different height positions, which can reduce the large-angle deflection of reflected light and effectively converge the light within the required light spot range to reduce light pollution and waste.

[0045] Different bending radii can be used to reflect and refract the elliptical light spot entering the elliptical cup 2. Due to the different bending degrees of the arc shape, the reflection angle and refraction path of the light on the cup wall will also be different, which helps to further shape the initially formed elliptical light spot into an elliptical light spot of the required size and shape. The arc-shaped side wall with inconsistent bending radii can make the light rays reflect and scatter multiple times within the cup, thereby changing the propagation direction and intensity distribution of the light rays. This can avoid the concentration of light rays in certain areas, making the elliptical light spot emitted from the elliptical cup 2 more uniform in illumination intensity, reducing the likelihood of over-bright or over-dark areas on the barcode surface, improving the barcode information recognition ability of the code scanner, and reducing the error rate.

[0046] Further, the outer side of the side wall of the elliptical cup 2 has a reflective coating, or the outer side of the side wall of the elliptical cup 2 is designed to be a frosted surface.

[0047] The reflective coating can reflect the light irradiated onto the outer side of the cup wall back to the inside, reducing the scattering and loss of light to the outside, allowing more light to participate in the shaping of the elliptical light spot and the formation of the final bar-shaped light spot, improving the utilization rate of light, and helping to solve the problem of light energy waste. The frosted surface can cause the light to undergo diffuse reflection when it is reflected, allowing the light to be more uniformly distributed within the elliptical cup 2, avoiding the concentration of light in certain areas, further improving the uniformity of the illumination intensity distribution of the elliptical light spot, providing better conditions for the subsequent formation of a bar-shaped light spot with uniform illumination, and helping to improve the barcode information recognition ability of the code scanner and reduce the error rate. By limiting the light within the elliptical cup 2 or making it more uniformly distributed inside, the likelihood of light leakage to the outside is reduced, thereby avoiding light pollution and the problem of cross-light with other optical systems around, and improving the stability and reliability of the entire code reader optical system.

[0048] Please refer to Figure 5 and Figure 6 In a specific embodiment, the strip-shaped prism body 4 includes a plurality of triangular strip-shaped prisms arranged on the upper surface of the connecting member 3. The triangular strip-shaped prisms at different positions are designed to have different lengths according to the widths of the connecting member 3 at different positions. Here, the light passing through the inclined surface 41 of the triangular strip-shaped prism is refracted, and the small-range light spot obtained from the elliptical cup body 2 is deflected in different directions (the vertical direction range remains unchanged, and the vertical direction can refer to the Y-axis direction in Figure 3 ) on the left and right sides of the horizontal direction (the horizontal direction can refer to the X-axis direction in Figure 4 ), thereby expanding the illumination range in the horizontal direction. Meanwhile, the triangular strip-shaped prisms are arranged with a certain gap therebetween, and the gap can enable the light spot to be emitted in a straight line.

[0049] Further, please refer to Figure 5 and Figure 6 The top of the triangular strip-shaped prism has a circular arc-shaped connecting portion 42. The circular arc-shaped connecting portion 42 can change the light path to a small-angle divergence, which is beneficial to supplement the light between the central light spot emitted between the two adjacent triangular strip-shaped prisms and the large-angle light spot emitted by the side edge of the triangular strip-shaped prism, so that the light spot transition is better and the brightness is more uniform. Moreover, the circular arc structure can also reduce the damage rate of the lens edge, so that the lens is more durable. The triangular strip-shaped prism is used to deflect the light to supplement the light at the central position in a spaced manner, and the combination thereof can obtain a continuously distributed narrow-edge rectangular light spot. The circular arc-shaped connecting portion 42 can make the refraction and reflection of the light at the top of the prism more smooth and uniform, and can reduce the loss of the light caused by the unsmooth reflection or refraction at the top of the prism.

[0050] Here, the elliptical cup body 2 reduces the illumination range of the large-angle light spot emitted by the light emitter 1 to obtain a small-range light spot with energy convergence; and the strip-shaped prism body 4 is used to deflect the light in the horizontal direction to increase the illumination range in the horizontal direction. The elliptical cup body 2 preliminarily reduces the range to obtain a narrow edge in the vertical direction, and the strip-shaped prism body 4 deflects the light in the horizontal direction to increase the illumination range in the horizontal direction to obtain a long edge, and the combination thereof can obtain a rectangular light spot (i.e., a strip-shaped light spot) with a narrow edge in the vertical direction and a long edge in the horizontal direction. Therefore, the strip-shaped light spot of the illumination lens in the present application meets the strip-shaped field of view requirement of the line-scan code reader while avoiding light waste, and the light overflow is less, which can reduce light pollution, and the light between adjacent illumination lenses can be avoided. At the same time, since the illumination lens is assembled in the code reader, the assembly is convenient, and the carrying is convenient.

[0051] The embodiment of the present application also provides a lens system, which includes the strip-shaped light spot forming lens according to any one of the preceding embodiments, and a plurality of strip-shaped light spot forming lenses arranged in a preset manner.

[0052] Specifically, the plurality of strip-shaped light spot forming lenses are arranged and connected in a preset manner to form a lens system, which can expand the illumination range of the lens system and increase the overall illumination intensity. For example, the plurality of strip-shaped light spot forming lenses can be arranged in a square matrix.

[0053] The application also provides a code reader comprising the strip-shaped light spot forming lens or the lens system according to any one of the preceding embodiments.

[0054] Please continue to refer to Figures 1 to 6 The code reader adopting the strip-shaped light spot forming lens or the lens system can expand the illumination range of the code reader and increase the overall illumination intensity. When scanning a large-sized bar code or two-dimensional code, the entire bar code area can be fully illuminated, avoiding the situation that some areas are not illuminated, thereby improving the adaptability and recognition ability of the code reader to bar codes of different sizes. The plurality of lenses are connected into a whole through the connecting piece 3, so that the entire optical path system is more stable and reliable, the relative positions of the lenses can be accurately controlled, the optical path deviation caused by the change of the positions of the lenses is reduced, the consistency of the propagation path of the light and the shape of the light spot is ensured, and the performance stability and reliability of the code reader are improved.

[0055] In summary, the application provides a strip-shaped light spot forming lens, a lens system and a line scanning code reader. The strip-shaped light spot forming lens comprises an elliptical cup body, a connecting piece, a strip-shaped prism body and a light inlet structure. The light inlet structure is integrally formed at the bottom of the elliptical cup body. The light inlet structure comprises a hollow structure at the bottom and a special-shaped structure at the top of the hollow structure at the bottom, and the special-shaped structure at the top is a symmetrical structure. The light inlet structure is used for initially shaping the light emitted by a light emitter. The elliptical cup body is used for shaping the light initially shaped by the light inlet structure into an elliptical light spot. The connecting piece is arranged at the top of the elliptical cup body. The strip-shaped prism body is arranged at the top of the connecting piece, and the strip-shaped prism body is used for changing the propagation direction of the light of the elliptical light spot emitted from the elliptical cup body to form a strip-shaped light spot. The application optimizes the existing code reader illumination lens to change the light path to form a strip-shaped light spot, solves the problems of light energy waste, side wall light waste, light pollution and light cross caused by the circular light spot in the prior art, and designs the illumination lens in the code reader, which is convenient for installation and carrying.

[0056] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the application, and these modifications or replacements should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A stripe-shaped light spot forming lens, applied to a line barcode scanner, characterized in that, include: Elliptical cup body, connector, strip prism body and light-gathering structure; The light-gathering structure is integrally formed at the bottom of the elliptical cup body. The light-gathering structure includes a hollow bottom structure and a top irregular structure located at the top of the hollow bottom structure, and the top irregular structure is a symmetrical structure. The light-gathering structure is used to initially shape the light emitted by the light-emitting body. The elliptical cup body is used to shape the light that has been initially shaped by the light-gathering structure into an elliptical light spot. The connector is located at the top of the elliptical cup body; The strip-shaped prism is disposed on the top of the connector, and the strip-shaped prism is used to change the propagation direction of the light emitted from the elliptical light spot in the elliptical cup to form a strip-shaped light spot.

2. The strip-shaped light spot forming lens according to claim 1, characterized in that, The top irregular structure has an upward convex arc shape at the top of the light-receiving surface along the X-axis of the elliptical cup body, and a camel-hump-like structure with a downward convex shape at the bottom of the light-receiving surface along the X-axis of the elliptical cup body.

3. The strip-shaped light spot forming lens according to claim 2, characterized in that, The hump-like structure includes at least two trough structures.

4. The strip-shaped light spot forming lens according to claim 2, characterized in that, The top irregular structure is concave at the top of the light-receiving surface along the Y-axis of the elliptical cup, and the bottom of the top irregular structure is also concave at the bottom of the light-receiving surface along the Y-axis of the elliptical cup.

5. The strip-shaped light spot forming lens according to claim 1, characterized in that, The horizontal cross-section of the hollow bottom structure is elliptical.

6. The strip-shaped light spot forming lens according to claim 1, characterized in that, The sidewalls of the elliptical cup are curved with inconsistent curvature, and the outer sidewalls of the elliptical cup have a reflective coating and a frosted surface.

7. The strip-shaped light spot forming lens according to claim 1, characterized in that, The strip prism body includes several triangular strip prisms spaced apart on the top of the connector.

8. The stripe-shaped light spot forming lens according to claim 7, characterized in that, The top of the triangular strip prism has an arc-shaped connecting part.

9. A lens system, characterized in that, It includes a plurality of stripe-shaped light-forming lenses as described in any one of claims 1-8, and the plurality of stripe-shaped light-forming lenses are arranged in a preset manner.

10. A line barcode scanner, characterized in that, It includes the stripe-shaped light spot forming lens as described in any one of claims 1-8, or the lens system as described in claim 9.

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