CN217156261U - Optical lens and detection device - Google Patents

Abstract

The embodiment of the application provides an optical lens and detection device, optical lens includes: a lens body; and a plurality of identification parts arranged on the side surface of the lens main body, wherein each identification part is a first pattern or a second pattern, and under the condition of illumination of the same light source, optical images corresponding to the first pattern and the second pattern have different shades. According to the embodiment of the application, accurate identification of different types of optical lenses is achieved in a simple manner.

Description

Optical lens and detection device

Technical Field

The utility model relates to an optics field especially relates to an optical lens and detection device.

Background

Optical lenses are widely used in various fields, for example, in a photoelectric sensor, the optical lenses are provided including a light projecting portion and a light receiving portion, and the optical lenses are generally divided into different weights according to parameters of the optical lenses and the like. In an automated assembly process of an optical lens, it is necessary to identify the kind of the optical lens to prevent misuse of the optical lens.

In some existing designs, different kinds of optical lenses are distinguished by their color. However, the selectable colors of the optical lens are limited, for example, five colors, i.e., red, white, orange, black and yellow, are generally available, and when the types of the optical lens exceed five colors, the different optical lenses cannot be distinguished by colors.

In other conventional designs, different types of optical lenses are distinguished by design differences in the overall external shape of the optical lens, for example, a design in which a C-angle is added to a corner of the lens. However, in such a design, on one hand, the overall external shape of the optical lens is limited by the optical lens body space, and therefore, when the optical lens body space is limited, such a method cannot be used, and on the other hand, when the external shape difference of different types of optical lenses is small, there is a problem that the type of optical lens cannot be accurately automatically recognized (for example, recognized by an image photographed by a camera) in an automated assembly process, resulting in misuse of the optical lens.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.

SUMMERY OF THE UTILITY MODEL

The present invention provides an optical lens and a detection device, which can realize accurate identification of different types of optical lenses in a simple manner.

According to an embodiment of a first aspect of the present application, there is provided an optical lens, wherein the optical lens includes:

a lens body; and

a plurality of identification parts arranged on the side surface of the lens body,

each of the identification portions is a first pattern or a second pattern, and the optical images corresponding to the first pattern and the second pattern have different shades when the same light source is used for illumination.

In one or more embodiments of the present invention,

the first pattern of identification portions has a first surface and the second pattern of identification portions has a second surface, the second surface being remote from the lens body relative to the first surface.

In one or more embodiments of the present invention,

the first surface is a surface parallel to an optical axis of the lens body, the second surface is a surface inclined with respect to the first surface,

the first surface and the second surface have different optical properties, and the second surface is a frosted surface or a textured surface.

In one or more embodiments of the present invention,

the color of the light emitted by the light source is adapted to the filter properties of the material of the identification part, and the light cannot completely penetrate through the identification part.

In one or more embodiments of the present invention,

the plurality of identification portions are arranged at intervals in a direction perpendicular to an optical axis of the lens body.

In one or more embodiments of the present invention,

the side surface is also provided with a first reference part which is positioned at one end of the plurality of identification parts.

In one or more embodiments of the present invention,

the lens main body comprises a first side surface and a second side surface which are opposite, the plurality of identification parts and the first reference part are arranged on the first side surface, and the second side surface is provided with a second reference part.

In one or more embodiments of the present invention,

the number of the identification parts is more than 2.

According to an embodiment of the second aspect of the present application, there is provided a detection apparatus, wherein the detection apparatus includes:

an optical lens according to an embodiment of the first aspect of the present application;

a light source that emits irradiation light to irradiate the identification portion;

an image acquisition unit that takes an image when the irradiation light is irradiated, and acquires a striped image of the recognition unit between light and dark; and

and an image processing unit which detects the type of the optical lens based on the striped image having alternate light and dark in the recognition unit.

One of the beneficial effects of the embodiment of the application lies in: the side surface of the lens main body is provided with a recognition part which can obtain the stripe patterns with alternate light and shade under the irradiation of a light source, and the accurate recognition of different types of optical lenses is realized in a simple mode under the condition of not changing the color and the overall appearance design of the optical lenses.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of an optical lens of an embodiment of a first aspect of the present application;

FIG. 2 is another schematic view of an optical lens of an embodiment of the first aspect of the present application;

FIG. 3 is yet another schematic view of a lens body of an embodiment of the first aspect of the present application;

FIG. 4 is a schematic view of a detection device according to an embodiment of a second aspect of the present application;

FIG. 5 is a schematic diagram of an optical image of the optical lens of FIG. 1;

FIG. 6 is a schematic diagram of an optical image of the optical lens of FIG. 2;

FIG. 7 is another schematic view of a detection device according to an embodiment of the second aspect of the present application;

FIG. 8 is another schematic diagram of the optical lens of FIG. 1;

fig. 9 is another schematic view of the optical lens shown in fig. 2.

Detailed Description

The foregoing and other features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the embodiments in which the principles of the invention may be employed, it being understood that the invention is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations and equivalents falling within the scope of the appended claims.

In the drawings used in the following description, since the components are sized to be recognizable on the drawing surface, the scale is different for each component, and the present invention is not limited to the number of components, the shapes of components, the ratio of the sizes of components, and the relative positional relationship of components described in these drawings.

In the embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having," or the like, refer to the presence of stated features, elements, components, but do not preclude the presence or addition of one or more other features, elements, components, or groups thereof.

In the embodiments of the present invention, the singular forms "a", "an", and the like include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

In the following description of the present application, for the sake of convenience of description, a direction perpendicular to the optical axis of the lens body or a direction parallel thereto is referred to as an "axial direction", a radial direction around the axial direction is referred to as a "radial direction", and a direction around the axial direction is referred to as a "circumferential direction". It should be noted that these are for illustrative convenience only and do not limit the orientation of the optical lens and the detection device during use and manufacture.

The embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiments of the first aspect

Embodiments of a first aspect of the present application provide an optical lens.

Fig. 1 is a schematic view of an optical lens of an embodiment of the first aspect of the present application.

As shown in fig. 1, the optical lens 10 includes a lens body 11 and a plurality of recognition portions 12, and the plurality of recognition portions 12 are arranged on a side surface 11S of the lens body 11.

In the embodiment of the present application, each of the recognizers 12 is the first pattern or the second pattern, and the optical images of the recognizers 12 corresponding to the first pattern and the recognizers 12 corresponding to the second pattern have different shades when the same light source is irradiated.

According to the above embodiment of the present application, the identification parts 12 are provided on the side surface 11S of the lens body 11, and the optical images corresponding to the identification parts 12 of different patterns have different shades under the irradiation of the same light source, that is, the plurality of identification parts 12 of different pattern combinations exhibit different patterns of light and dark alternately, so that the types of the optical lens 10 can be distinguished.

Accordingly, the recognition unit 12 is provided on the existing external appearance surface of the lens body 11, and it is not necessary to change the entire external appearance of the lens body 11, and it is possible to distinguish the type of the optical lens 10 by combining the plurality of recognition units 12 in different patterns, and it is not necessary to change the color of the optical lens 10, and thus, it is possible to accurately recognize the different types of optical lenses in a simple manner.

In the embodiment of the present application, the optical images corresponding to the recognition units 12 of different patterns have different shades under the same light source, so that the stripe patterns with alternate shades can be accurately recognized by means of image processing and the like, thereby recognizing different pattern combinations to detect the types of the optical lenses, saving manpower and realizing the complete automatic assembly of the optical lenses.

In the embodiment of the present application, a surface of the lens body 11 parallel to the optical axis may be referred to as a side surface of the lens body 11, the lens body 11 may include a plurality of side surfaces, and the plurality of identification portions 12 may be disposed on any one side surface of the lens body 11, such as the side surface 11S in fig. 1, but the present application is not limited thereto, and the plurality of identification portions 12 may be disposed on the plurality of side surfaces, for example, two identification portions 12 among the 4 identification portions 12 illustrated in fig. 1 may be disposed on the side surface 11S, and the remaining two identification portions 12 may be disposed on another side surface of the lens body 11 different from the side surface 11S, such as a side surface opposite to the side surface 11S, which is merely an exemplary illustration, and the surface on which the identification portion 12 is disposed may be determined according to actual needs (such as a size of the side surface of the lens body, a size of the identification portion), and the like.

In the embodiment of the present application, the plurality of identification portions 12 are arranged in a direction perpendicular to the optical axis OO 'of the lens body 11 on the side surface of the lens body 11, for example, fig. 1 shows that the plurality of identification portions 12 are arranged in the first direction PP' which is a direction perpendicular to the optical axis OO ', but the present application is not limited thereto, and for example, the plurality of identification portions 12 may be arranged in a direction intersecting the first direction PP', for example, the intersection angle is an acute angle or a right angle, and may be determined according to actual conditions (for example, the shape of the side surface of the lens body, the size of the identification portion), and the like.

In the embodiment of the present application, the recognition portions 12 of the first pattern and the recognition portions 12 of the second pattern have different optical characteristics, so that different light and dark stripe patterns can be generated by a plurality of recognition portions of different pattern combinations under the condition of irradiation of the same light source.

In the embodiment of the present application, two types of identification portions 12 with different optical characteristics may be implemented in various ways, for example, the surface of the identification portion 12 irradiated by the light of the light source has different reflection and/or refraction properties in different types, for example, different incident angles and/or different roughness degrees with respect to the incident light, or the identification portions 12 of the first type and the identification portions 12 of the second type have different light shielding effects, for example, one type of identification portion 12 may allow the light to pass through, while the other type of identification portion shields the light, which is not limited in this application, as long as the optical patterns corresponding to the identification portions 12 of different types have different shades in the case of irradiation by the same light source.

In the embodiment of the present application, the size of the identification portion 12 is not particularly limited, and may be set according to the actual situation (for example, the number of the identification portions in total, the area of the side surface on which the identification portion 12 is provided, etc.), for example, the height protruding from the side surface 11S, or the width in the arrangement direction, or the length. Therefore, the size of the identification part 12 can be flexibly set, the overall appearance of the optical lens 10 is not affected, the limitation of the appearance of the optical lens body is avoided, the identification part can be formed by using a small amount of materials, and the material consumption can be saved.

In the embodiment of the present application, the optical patterns corresponding to the first pattern and the second pattern have different shades, for example, the optical pattern corresponding to the recognition portion of the first sample is a white pattern, and the optical pattern corresponding to the recognition portion of the second sample is a black pattern, but the present application is not limited thereto, and for example, the optical pattern corresponding to the recognition portion of the first sample may be a gray pattern, or the optical pattern corresponding to the recognition portion of the second sample may be a gray pattern, and the present application is not limited thereto as long as the optical patterns of the two patterns have different shades that can be distinguished.

In the embodiment of the present application, as shown in fig. 1, the number of the identification portions may be 4, and thus, it is possible to distinguish not more than 16 kinds of optical lenses, but the present application is not limited thereto, and the number of the identification portions may be, for example, 1, 2, 3, 5, or more than 5, and an appropriate number of identification portions may be provided according to the total kinds of optical lenses that can be distinguished as needed, ensuring that it is possible to distinguish all kinds of optical lenses.

In the embodiment of the present application, the plurality of identification portions 12 are arranged in an array, for example, as shown in fig. 1 and 2, gaps may be provided between the plurality of identification portions 12, but the present application is not limited to this, and gaps may not be provided between the plurality of identification portions 12, and may be set according to actual conditions.

Fig. 2 is another schematic diagram of an optical lens according to an embodiment of the first aspect of the present application, and fig. 2 and fig. 1 show a case where one of the recognition portions 12 is a first pattern and a second pattern, respectively, that is, the optical lens shown in fig. 2 and the optical lens shown in fig. 1 are of different kinds.

In one or more embodiments, for the same identifier 12, the first pattern of identifiers 12a1 has a first surface S1 (see fig. 2), the second pattern of identifiers 12a2 has a second surface S2 (see fig. 1), and the second surface S2 is distal from the lens body 11 relative to the first surface S1. For example, the first plane S1 may be a plane flush with the side surface 11S, that is, the first plane S1 is a part of the side surface 11S, and the second plane S2 may be a surface of a chamfered structure provided on the side surface 11S, but the present application is not limited thereto, and for example, the first plane S1 may be higher or lower than the plane of S1, as long as the first surface S1 and the second surface S2 exhibit different reflection/refraction properties with respect to incident light when the same light source irradiates.

Thus, the optical characteristics of the identifiers 12 are significantly different between the first and second patterns, and when the same light source is used for illumination, the first surface S1 and the second surface S2 exhibit different reflection/refraction properties with respect to incident light, so that the optical patterns of the identifiers corresponding to the different patterns have different shades, and thus the stripe pattern of the optical patterns of the plurality of identifiers 12 corresponding to the optical lens shown in fig. 1 is different from the stripe pattern of the optical patterns of the plurality of identifiers 12 corresponding to the optical lens shown in fig. 2, thereby distinguishing the optical lenses shown in fig. 1 and 2.

For example, when the identification portion corresponding to the first sample is represented by "0" and the identification portion corresponding to the second sample is represented by "1", the stripe pattern of the optical pattern of the plurality of identification portions 12 of the optical lens shown in fig. 1 can be represented by "1111", and the stripe pattern of the optical pattern of the plurality of identification portions 12 of the optical lens shown in fig. 2 can be represented by "1011", whereby the optical lenses shown in fig. 1 and 2 can be distinguished from each other.

In one or more embodiments, as shown in fig. 2, the first surface S1 is a plane parallel to the optical axis of the lens body 11, and the second surface S2 is a plane inclined with respect to the first surface S1. Thus, the optical patterns of the recognizers corresponding to the first and second surfaces S1 and S2 can exhibit different shades, thereby differentiating the optical lenses shown in fig. 1 and 2.

For example, the inclination angle of the second surface relative to the first surface may be 45 degrees, but the application is not limited thereto, and the inclination angle of the second surface relative to the first surface may also be less than 45 degrees or greater than 45 degrees, which may be set according to actual needs. Thereby, the optical patterns of the recognized parts corresponding to the first and second surfaces S1 and S2 can exhibit different shades, thereby distinguishing the optical lenses shown in fig. 1 and 2.

However, the present application is not limited thereto, and for example, the second surface S2 and the first surface S1 may also realize different optical characteristics in other ways, for example, the second surface S2 may be entirely away from the lens body 11 with respect to the first surface S1, i.e., the second surface S2 is also parallel to the side surface 11S. In this case, when the light source and the image pickup device for picking up the optical image are respectively located on both sides of the recognition part 12 in the optical axis direction, the optical patterns of the recognition part corresponding to the first surface S1 and the second surface S2 can exhibit different shades, thereby differentiating the optical lenses shown in fig. 1 and 2.

In addition, the first surface S1 and the second surface S2 may also have different optical characteristics, for example, the second surface S2 is a frosted surface or a textured surface, that is, the second surface S2 is rougher than the first surface S1, in this case, when the first surface S1 and the second surface S2 are respectively irradiated by the light source, the optical patterns of the recognition portions corresponding to the first surface S1 and the second surface S2 can exhibit different shades, thereby distinguishing the optical lenses shown in fig. 1 and fig. 2.

In one or more embodiments, as shown in fig. 1 and 2, the side surface 11S is further provided with a first reference portion 13, and the first reference portion 13 is located at one end of the plurality of recognition portions 12, for example, at one end in the arrangement direction of the plurality of recognition portions 12. Thus, the images corresponding to the plurality of recognition units 12 are specified from the image positions corresponding to the first reference units 13 in the acquired images, and the stripe patterns of the plurality of recognition units 12 can be recognized accurately.

However, the present application is not limited thereto, and the first reference portion 13 may be disposed at other positions of the lens body 11, for example, the first reference portion 13 may be disposed at an intermediate position of the plurality of recognition portions 12.

In the present embodiment, the first reference part 13 may have the same optical characteristics as the recognition part of the first pattern, or the first reference part 13 may have the same optical characteristics as the recognition part of the second pattern. In the case where the first reference part 13 and the recognized part of the first pattern or the recognized part of the second pattern have the same optical characteristics, the first reference part 13 may have different widths with respect to the recognized part, where the width indicates a dimension in the arrangement direction PP' of the plurality of recognized parts 12, for example, the width of the first reference part 13 is larger than the width of the recognized part 12.

In the embodiment of the present application, the first reference portion 13 may have different optical characteristics from the recognition portion as long as the optical image corresponding to the first reference portion 13 is constant and different from the optical image of any one of the recognition portions 12, and is easily recognized.

Fig. 3 shows a further schematic view of the lens body of an embodiment of the first aspect of the present application, showing the situation on the other side of the lens body, opposite to the side 11S.

As shown in fig. 1 and 3, the lens body 11 includes a first side surface 11S and a second side surface 11Q opposed to each other, the first side surface 11S, the plurality of identification portions 12 and the first reference portion 13 are provided on the side surface 11S, and the second side surface 11Q is provided with the second reference portion 14. The optical characteristics of the second reference portion 14 are not limited in the present application as long as the optical image corresponding to the second reference portion 14 is constant and easily recognizable.

In one or more embodiments, the width dimension of the identification portion 12 is a first dimension or a second dimension. Accordingly, the width of the identification portion 12 can also carry information to distinguish the type of optical lens, and for example, in the case of four identification portions 12 as shown in fig. 1, more than 16 types of optical lenses can be distinguished.

In one or more embodiments, the light source may be a light source that irradiates a general light, i.e., white light, but the present application is not limited thereto, and the color of the irradiation light of the light source may also be a colored light, and the color of the irradiation light of the light source is matched with a filter characteristic of a material of the identification part, so that the irradiation light cannot completely transmit through the identification part. Thus, when the light source is irradiated from the optical axis direction, the identification portion of the second pattern becomes a hollow portion and allows light to pass therethrough, while the identification portion of the first pattern becomes a light shielding portion and prevents light from passing completely therethrough, for example, the light shielding portion allows light to partially pass therethrough or not to completely pass therethrough, and different light and dark stripe patterns corresponding to a plurality of identification portions of different pattern combinations can be obtained, thereby enabling different types of optical lenses to be distinguished.

The above embodiments are merely illustrative of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made on the basis of the above embodiments. For example, the above-described embodiments may be used alone, or one or more of the above-described embodiments may be combined.

As can be seen from the above embodiments, the identification portions 12 are provided on the side surface 11S of the lens body 11, and the optical images corresponding to the identification portions 12 of different patterns have different shades under the irradiation of the same light source, that is, the identification portions 12 of different pattern combinations exhibit different patterns of light and dark, so that the types of the optical lens 10 can be distinguished. Accordingly, the recognition unit 12 is provided on the existing external appearance surface of the lens body 11, and it is not necessary to change the entire external appearance of the lens body 11, and it is possible to distinguish the type of the optical lens 10 by combining the plurality of recognition units 12 in different patterns, and it is not necessary to change the color of the optical lens 10, and thus, it is possible to accurately recognize the different types of optical lenses in a simple manner.

Embodiments of the second aspect

Embodiments of a second aspect of the present application provide a detection apparatus.

Fig. 4 is a schematic view of a detection device according to an embodiment of the second aspect of the present application.

As shown in fig. 4, the detection device 20 includes the optical lens 10, the light source 21, the image acquisition section 22, and the image processing section 23 as described in the embodiment of the first aspect.

In the embodiment of the present application, as shown in fig. 4, the light source 21 emits irradiation light to irradiate the recognition unit 12, the image acquisition unit 22 performs imaging when the irradiation light is irradiated, and obtains an alternate light and dark fringe image of the recognition unit 12, and the image processing unit 23 detects the type of the optical lens 10 from the alternate light and dark fringe image of the recognition unit 12.

As can be seen from the above-described embodiments, the identification part 12 is provided on the existing external appearance surface of the lens body 11, and it is not necessary to change the entire external appearance of the lens body 11, and it is possible to distinguish the type of the optical lens 10 by combining different patterns of the plurality of identification parts 12, and it is not necessary to change the color of the optical lens 10, and therefore, accurate identification of different types of optical lenses is achieved in a simple manner.

For example, in the detection apparatus shown in fig. 4, the light source 21 and the image pickup section 22 are on the same side on the optical axis of the optical lens 10. When the identifier 12 is of the first type (see identifier 12a1 in fig. 2), the light emitted from the light source is difficult to enter the image acquiring unit 22 through the 1 st surface S1, and therefore the optical pattern of the identifier of the first sample is a non-bright long strip, such as the black long strip 25 shown in fig. 6; when the identifier 12 is of the second type (see the identifier 12a2 in fig. 1), the light emitted from the light source can enter the image acquiring unit 22 via the 2 nd surface S2, and therefore the optical pattern of the identifier of the second sample will be a bright long stripe, such as the white long stripe 24 shown in fig. 5 and 6.

Fig. 5 is a schematic view of an optical image of the optical lens shown in fig. 1, and fig. 6 is a schematic view of an optical image of the optical lens shown in fig. 2.

As shown in fig. 5, the stripe pattern corresponding to the four identification parts 12 of the optical lens of fig. 1 is four bright stripes 24 arranged at intervals, and the stripe pattern corresponding to the four identification parts 12 of the optical lens of fig. 2 is four stripes arranged at intervals, and includes black stripes 25 corresponding to the identification part 12a1 in fig. 2 and three bright stripes 24 corresponding to other identification parts.

In the embodiment of the present application, the image processing unit may detect the type of the corresponding optical lens from the streak image having alternate light and shade of the recognition unit.

For example, the image processing unit 23 may store a stripe pattern corresponding to a different recognition unit of each type of optical lens in advance, and when a stripe image of the recognition unit of the optical lens to be recognized is obtained, the type of the optical lens to be recognized may be determined by image matching.

However, the present application is not limited thereto, and for example, a plurality of codes respectively corresponding to each type of optical lens may be stored in advance in the image processing unit, for example, when the number of the identification units is 4, 16 codes expressed by different 4-bit strings may be stored, and when a fringe image of the identification unit of the optical lens to be identified is obtained, the image processing unit 23 may convert the same into a corresponding 4-bit string, for example, the fringe pattern shown in fig. 5 may be converted into a 4-bit string "1111", the fringe pattern shown in fig. 6 may be converted into a 4-bit string "1011", the converted 4-bit string may be compared with the plurality of codes stored in advance, the type of the optical lens corresponding to the 4-bit string "1111" may be set as the type of the optical lens shown in fig. 1, the type of the optical lens corresponding to the 4-bit string "1011" may be set as the type of the optical lens shown in fig. 2, thereby, different types of optical lenses can be distinguished.

In one or more embodiments, as shown in fig. 4, the light source 21 and the image obtaining portion 22 are on the same side of the optical lens 10 on the optical axis, but the present application is not limited thereto, and the positions of the light source 21 and the image obtaining portion 22 relative to the optical lens 10 may also be in other manners, for example, the light source 21 and the image obtaining portion 22 may be respectively located on two sides of the optical lens 10 in the optical axis direction, or the image obtaining portion 22 may be disposed on one side of the optical lens where the identification portion 12 is disposed, and the present application is not limited thereto, as long as the identification portions corresponding to the first pattern and the identification portions corresponding to the second pattern in the optical pattern obtained by the image obtaining portion 22 have different shades.

Fig. 7 is another schematic view of a detection apparatus of an embodiment of the second aspect of the present application.

As shown in fig. 7, the light source 21 and the image pickup section 22 are located on different sides on the optical axis of the optical lens 10. In such a detection device, a light source matching the filter characteristics of the material of the identification portion, such as a light source of a specific color, may be selected, that is, the illuminating light of the light source may not completely transmit through the identification portion 12, and in such an embodiment, the optical characteristics of the surfaces of the identification portions of different models may be the same, that is, may have the same roughness, whereby the roughness processing work may be saved.

Fig. 8 is another schematic view of the optical lens shown in fig. 1, showing a case where the optical lens shown in fig. 1 is viewed from the optical axis direction, and fig. 9 is another schematic view of the optical lens shown in fig. 2, showing a case where the optical lens shown in fig. 2 is viewed from the optical axis direction.

In the present embodiment, the first pattern of the identification portion 12 (see the identification portion 12a1 in fig. 2 and 9) is a hollow portion through which light can directly pass, and light emitted from the light source can be incident on the image acquisition portion 22, so that the optical pattern of the identification portion of the first sample is a bright long strip; the second type of the identification portion 12 (see the identification portion 12a2 in fig. 1 and 8) becomes a blocking portion through which light cannot completely pass, and the identification portion 12a2 causes at least part of the light emitted from the blocking light source to enter the image acquisition portion 22, so that the optical pattern of the identification portion 12a2 of the second sample becomes a darker and longer stripe than the pattern of the identification portion 12a1 of the first sample. Thus, the optical lenses of fig. 1 and 2 are associated with different light and dark alternate fringe patterns, and the image processing unit 23 can detect the type to which the optical lens of fig. 1 and 2 belongs.

As can be seen from the above-described embodiments, the identification part 12 is provided on the existing external appearance surface of the lens body 11, and it is not necessary to change the entire external appearance of the lens body 11, and it is possible to distinguish the type of the optical lens 10 by combining different patterns of the plurality of identification parts 12, and it is not necessary to change the color of the optical lens 10, and therefore, accurate identification of different types of optical lenses is achieved in a simple manner.

The present invention has been described in connection with specific embodiments, but it should be clear to a person skilled in the art that these descriptions are intended to be illustrative and not limiting to the scope of the invention. Various modifications and adaptations of the present invention may occur to those skilled in the art, which are within the spirit and scope of the present invention.

Claims (9)

1. An optical lens, characterized in that the optical lens comprises:

a lens body; and

a plurality of identification parts arranged on the side surface of the lens body,

each of the identification portions is a first pattern or a second pattern, and the optical images corresponding to the first pattern and the second pattern have different shades when the same light source is used for illumination.

2. An optical lens according to claim 1,

the first pattern of identification portions has a first surface and the second pattern of identification portions has a second surface, the second surface being remote from the lens body relative to the first surface.

3. An optical lens according to claim 2,

the first surface is a surface parallel to an optical axis of the lens body, the second surface is a surface inclined with respect to the first surface,

the first surface and the second surface have different optical properties, and the second surface is a frosted surface or a textured surface.

4. An optical lens according to claim 2,

the color of the light emitted by the light source is adapted to the filter properties of the material of the identification part, and the light cannot completely penetrate through the identification part.

5. The optical lens according to any one of claims 1 to 4,

the plurality of identification portions are arranged at intervals in a direction perpendicular to an optical axis of the lens body.

6. The optical lens according to any one of claims 1 to 4,

the side surface is also provided with a first reference part which is positioned at one end of the plurality of identification parts.

7. An optical lens according to claim 6,

the lens main body comprises a first side surface and a second side surface which are opposite, the plurality of identification parts and the first reference part are arranged on the first side surface, and the second side surface is provided with a second reference part.

8. The optical lens according to any one of claims 1 to 4,

the number of the identification parts is more than 2.

9. A detection device, characterized in that the detection device comprises:

an optical lens according to any one of claims 1 to 8;

a light source that emits irradiation light to irradiate the identification portion;

an image acquisition unit that takes an image when the irradiation light is irradiated, and acquires a striped image of the recognition unit between light and dark; and

and an image processing unit which detects the type of the optical lens based on the striped image having alternate light and dark in the recognition unit.

Images