CN118112762B - Industrial detection lens and detection equipment - Google Patents
Industrial detection lens and detection equipment Download PDFInfo
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- CN118112762B CN118112762B CN202410534390.4A CN202410534390A CN118112762B CN 118112762 B CN118112762 B CN 118112762B CN 202410534390 A CN202410534390 A CN 202410534390A CN 118112762 B CN118112762 B CN 118112762B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/275—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The application relates to the technical field of optical lenses, and provides an industrial detection lens and detection equipment, which relate to the technical field of optical lenses, wherein the industrial detection lens comprises a first lens group, a diaphragm and a second lens group which are sequentially arranged along the direction from an object side to an image side of an optical axis; the first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side, wherein the first lens, the second lens and the fifth lens have positive focal lengths, and the third lens and the fourth lens have negative focal lengths; the second lens group includes a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens that are sequentially disposed in a direction from the object side to the image side, the ninth lens and the tenth lens having positive focal lengths, the sixth lens, the seventh lens, and the eighth lens having negative focal lengths. The technical scheme of the application can provide the industrial detection lens with wide working temperature range and clear imaging.
Description
Technical Field
The invention relates to the technical field of optical lenses, in particular to an industrial detection lens and detection equipment.
Background
At present, four-wheel positioning detection of an automobile is generally carried out in a manual naked eye observation mode, but the mode cannot observe whether the four wheels of the automobile are inclined or unbalanced, so that quality problems of the wheels of the automobile are inconvenient to detect, and the danger coefficient of running of the automobile is increased.
Disclosure of Invention
The invention mainly aims to provide an industrial detection lens and detection equipment, and aims to provide an industrial detection lens with wide working temperature range and clear imaging.
In order to achieve the above object, the present invention provides an industrial inspection lens, which includes a first lens group, a diaphragm, and a second lens group sequentially disposed along an optical axis from an object side to an image side;
The first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side, wherein the first lens, the second lens and the fifth lens have positive focal lengths, and the third lens and the fourth lens have negative focal lengths;
The second lens group includes a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens that are sequentially disposed in a direction from an object side to an image side, the ninth lens and the tenth lens having positive focal lengths, the sixth lens, the seventh lens, and the eighth lens having negative focal lengths.
Optionally, the first lens, the second lens, the third lens, and the fourth lens are negative meniscus lenses;
the fifth lens and the tenth lens are biconvex lenses;
the eighth lens is a biconcave lens;
The sixth lens, the seventh lens and the ninth lens are positive meniscus lenses.
Optionally, the seventh lens and the eighth lens are arranged in a cemented fashion.
Optionally, the second lens, the third lens, the fifth lens and the eighth lens are made of a high refractive index material.
Optionally, the sixth lens, the seventh lens and the ninth lens are made of a low refractive index material.
Optionally, each of the first lens to the tenth lens is a glass material.
Optionally, the industrial detection lens further comprises a diaphragm, and the diaphragm is arranged between the first lens group and the second lens group.
Optionally, the working band range of the industrial detection lens is 700 nm-900 nm.
Optionally, the working distance range of the industrial detection lens is 350-850 mm.
Optionally, the focal length of the industrial detection lens is 3.5.
The invention also provides detection equipment, which comprises the industrial detection lens, wherein the industrial detection lens comprises a first lens group, a diaphragm and a second lens group which are sequentially arranged along the direction from the object side to the image side of an optical axis;
The first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side, wherein the first lens, the second lens and the fifth lens have positive focal lengths, and the third lens and the fourth lens have negative focal lengths;
The second lens group includes a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens that are sequentially disposed in a direction from an object side to an image side, the ninth lens and the tenth lens having positive focal lengths, the sixth lens, the seventh lens, and the eighth lens having negative focal lengths.
The technical scheme of the invention provides an industrial detection lens applied to detection equipment, which comprises ten lenses sequentially arranged along an optical axis from an object side to an image side, wherein the ten lenses are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens, and respectively have positive, negative, positive and positive focal lengths.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an embodiment of an industrial inspection lens according to the present invention;
FIG. 2 is a graph showing the MTF of the industrial inspection lens of FIG. 1 at 700nm to 900nm operating band;
FIG. 3 is a graph of MTF at 80℃for the industrial inspection lens of FIG. 1;
FIG. 4 is a point diagram of the industrial inspection lens of FIG. 1;
FIG. 5 is a field curve of the industrial inspection lens of FIG. 1;
FIG. 6 is a distortion chart of the industrial inspection lens of FIG. 1;
FIG. 7 is a graph of the relative illuminance of the industrial inspection lens of FIG. 1.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an industrial inspection lens 100.
Referring to fig. 1, in some embodiments of an industrial inspection lens 100 of the present invention, the industrial inspection lens 100 includes a first lens group, a diaphragm, and a second lens group sequentially disposed along an optical axis from an object side to an image side;
The first lens group comprises a first lens 1, a second lens 2, a third lens 3, a fourth lens 4 and a fifth lens 5 which are sequentially arranged from the object side to the image side, wherein the first lens 1, the second lens 2 and the fifth lens 5 have positive focal lengths, and the third lens 3 and the fourth lens 4 have negative focal lengths;
The second lens group includes a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, and a tenth lens 10, which are disposed in order from the object side to the image side, the ninth lens 9 and the tenth lens 10 having positive focal lengths, and the sixth lens 6, the seventh lens 7, and the eighth lens 8 having negative focal lengths.
Wherein, the diaphragm is arranged between the first lens group and the second lens group. The light passing amount of the industrial detection lens 100 can be determined by the clear aperture of the diaphragm, and can be better matched with the incident angle of the photosensitive chip of the industrial detection lens 100.
It should be noted that, the four-wheel maintenance and inspection of the automobile is generally performed by means of manual naked eye observation, but the method cannot observe whether the automobile tire is inclined or uneven, so that the quality problem of whether the wheel assembly is in place or not is inconvenient to detect, and the danger coefficient of the running of the automobile is increased. Therefore, it can be understood that the present invention proposes an industrial inspection lens 100 applied to an inspection apparatus, which can be applied to a four-wheel-positioning inspection apparatus for tire inspection and corresponds to data output, where the industrial inspection lens 100 includes ten lenses sequentially disposed along an optical axis from an object side to an image side, the ten lenses are a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, and a tenth lens 10, and each having positive, negative, positive, and positive focal lengths, and by reasonably matching the positive and negative focal lengths of each lens, the deformation and the refractive index change generated when each lens compensates each other at high and low temperatures can be realized, and the high and low temperature focus compensation can be realized in a temperature range of-40 ℃ to +80 ℃, so as to maintain perfect imaging clarity, thereby improving the high and low temperature stability of the industrial inspection lens 100, and being suitable for the use requirements of the inspection apparatus.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, the first lens 1, the second lens 2, the third lens 3, and the fourth lens 4 are negative meniscus lenses;
the fifth lens 5 and the tenth lens 10 are biconvex lenses;
the eighth lens 8 is a biconcave lens;
The sixth lens 6, the seventh lens 7, and the ninth lens 9 are positive meniscus lenses.
Wherein the first lens 1, the second lens 2 and the third lens 3 are arranged as negative meniscus lenses to form a focusing group of the industrial inspection lens 100, and the second lens 2 and the third lens 3 can be designed as a near spherical surface, thereby being beneficial to controlling the distortion of the industrial inspection lens 100. The provision of the fifth lens 5 and the tenth lens 10 as biconvex lenses is advantageous in enhancing the condensing effect of the fifth lens 5 and the tenth lens 10. By reasonably distributing the surface types of the lenses, the aberration such as spherical aberration, coma aberration, astigmatism, field curvature and the like can be effectively corrected, so that the resolution quality of the industrial detection lens 100 is improved, and the method is suitable for the use requirements of tire detection equipment.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, the seventh lens 7 and the eighth lens 8 are glued together.
In this embodiment, the seventh lens 7 and the eighth lens 8 are glued, so that the decentering sensitivity and the assembling sensitivity of the industrial inspection lens 100 are reduced, the difficulty of the processing technology of the optical lens is reduced, the assembling yield of the optical lens is improved, and the imaging quality of the optical system is improved.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, the second lens element 2, the third lens element 3, the fifth lens element 5 and the eighth lens element 8 are made of high refractive index materials; the sixth lens 6, the seventh lens 7, and the ninth lens 9 are made of a low refractive index material.
Specifically, the sixth lens 6, the seventh lens 7, and the ninth lens 9 are made of low refractive index and low dispersion materials, so that the spherical aberration and the coma aberration of the industrial inspection lens 100 can be further optimized, and an ideal resolution can be achieved. In some embodiments, the sixth lens 6, the seventh lens 7, the ninth lens 9 satisfy the condition: nd is less than 1.7, vd is more than 55. Of course, the technical solution of the present invention is not limited thereto, and specific values of refractive indexes and abbe coefficients of the sixth lens element 6, the seventh lens element 7 and the ninth lens element 9 may be set according to actual needs, and are not limited thereto.
Further, in some embodiments, the second lens 2, the third lens 3, the fifth lens 5 and the eighth lens 8 are made of a high refractive index material, which satisfies the following conditions: nd is more than 1.9. The fifth lens element 5 and the eighth lens element 5 may be made of high-dispersion materials, and satisfy the following conditions: vd <18.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, all of the first lens element 1 to the tenth lens element 10 are made of glass.
It should be noted that, in the high-low temperature environment, the thermal deformation of the plastic lens is much larger than that of the glass lens, and the surface and thickness of the plastic lens are more easily affected by the mechanical structure to change, which directly leads to the performance degradation of the optical system of the four-wheel positioning detection lens. Therefore, according to the technical scheme of the invention, the thermal deformation of each lens is analyzed and optimized, and the first lens 1 to the tenth lens 10 are all made of glass, so that the influence of thermal deformation among the lenses is reduced, the imaging quality of the industrial detection lens 100 is ensured, and the overall material cost of the industrial detection lens 100 is reduced.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, the working band range of the industrial inspection lens 100 is 700nm to 900nm.
In the embodiment, the Jiao Shipin monitoring lens works in a near infrared band, the wavelength range is 700 nm-900 nm, the design of narrow-band imaging is realized, and four-wheel positioning detection can be realized through near infrared light wave imaging. In some embodiments, the operating band of the industrial inspection lens 100 may be limited by way of a coating. It can be appreciated that the arrangement can be suitable for the use requirement that the four-wheel positioning equipment adopts laser light filling when illumination is insufficient, and the design of narrow-band imaging can reduce production cost to a certain extent.
In addition, the detection equipment disclosed by the invention realizes the light supplementing requirement in a laser light supplementing mode, is beneficial to guaranteeing the illuminance of a light source, improves the relative brightness of a lens and ensures the detection effect of the detection equipment.
In some embodiments of the industrial inspection lens 100 of the present invention, the working distance of the industrial inspection lens 100 ranges from 350mm to 850mm. In this way, the industrial inspection lens 100 can be ensured to have a good imaging effect.
Referring to fig. 1, in some embodiments of the industrial inspection lens 100 of the present invention, the focal length of the industrial inspection lens 100 is 3.5.
The relevant parameters of each lens in the industrial inspection lens 100 provided by the present invention are shown in the following table:
Referring to fig. 2 and 3, fig. 2 and 3 show an MTF graph at 80 degrees celsius and a working band of 700nm to 900nm of an embodiment of an industrial inspection lens 100 according to the present invention, which represents lens imaging modulation degrees of different spatial frequencies under each view. Wherein the horizontal axis of the MTF graph represents spatial frequency and the vertical axis represents MTF value. As can be seen from fig. 2 and 3, the MTF values of the present embodiment are all above 0.3 in the full field of view, and the MTF curves drop evenly and smoothly in the process from the center to the edge field of view, so that the industrial inspection lens 100 of the present invention has good imaging quality and detail resolution.
Referring to fig. 3, fig. 3 is a point diagram of an industrial inspection lens 100 according to an embodiment of the invention. As can be seen from fig. 3, the industrial inspection lens 100 of the present invention has good imaging quality.
Referring to fig. 5 and 6, fig. 5 and 6 show a field curvature diagram and a relative distortion diagram of an embodiment of an industrial inspection lens 100 according to the present invention, wherein an abscissa of fig. 5 represents an offset (unit: mm), and an ordinate represents a field angle (unit: degree), and as can be seen in fig. 5, meridian field curvature and sagittal field curvature of different wavelengths are within ±0.06mm, and astigmatism is well corrected; the abscissa of fig. 6 shows the distortion amount, and the ordinate shows the angle of view, and as can be seen from fig. 6, the relative distortion value of this embodiment is not more than 20%.
Referring to fig. 7, fig. 7 shows a relative illuminance diagram of an industrial inspection lens 100 according to an embodiment of the invention, wherein an abscissa is a field angle and an ordinate is relative illuminance. As can be seen from fig. 4, the relative illuminance of the present embodiment reaches 50% or more, and the present embodiment has good relative illuminance.
The application also provides a detection device, which comprises the industrial detection lens 100 in any of the previous embodiments, and the specific structure of the industrial detection lens 100 refers to any of the previous embodiments. The detection device provided by the application can be applied to all the technical schemes in all the embodiments, so that the detection device at least has all the beneficial effects brought by the technical schemes, and the detection device is not described in detail herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. An industrial detection lens is characterized by comprising a first lens group, a diaphragm and a second lens group which are sequentially arranged along an optical axis from an object side to an image side;
The first lens group consists of a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side, wherein the first lens, the second lens and the fifth lens have positive focal lengths, and the third lens and the fourth lens have negative focal lengths;
the second lens group is composed of a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from the object side to the image side, the ninth lens and the tenth lens have positive focal lengths, and the sixth lens, the seventh lens and the eighth lens have negative focal lengths;
The radius of curvature of the object side surface of the first lens is 56.791, the radius of curvature of the image side surface is 115.189, the center thickness of the first lens on the optical axis is 10.198mm, the interval distance between the first lens and the second lens on the optical axis is 0.088mm, the refractive index of the first lens is 1.696, the dispersion coefficient is 56.199 and the focal length is 151.775;
The curvature radius of the object side surface of the second lens is 21.593, the curvature radius of the image side surface is 10.262, the center thickness of the second lens on the optical axis is 0.99mm, the interval distance between the second lens and the third lens on the optical axis is 5.52mm, the refractive index of the second lens is 1.953, the dispersion coefficient is 32.318, and the focal length is 23.13;
the radius of curvature of the object side surface of the third lens is 25.425, the radius of curvature of the image side surface is 9.236, the center thickness of the third lens on the optical axis is 0.995mm, the interval distance between the third lens and the fourth lens on the optical axis is 8.275mm, the refractive index of the third lens is 1.953, the dispersion coefficient is 32.318, and the focal length is-16.13;
The radius of curvature of the object side surface of the fourth lens is 69.835, the radius of curvature of the image side surface is 6.88, the center thickness of the fourth lens on the optical axis is 7.004mm, the interval distance between the fourth lens and the fifth lens on the optical axis is 0.831mm, the refractive index of the fourth lens is 1.883, the dispersion coefficient is 40.806, and the focal length is-9.275;
The radius of curvature of the object side surface of the fifth lens is 14.563, the radius of curvature of the image side surface is-12.46, the center thickness of the fifth lens on the optical axis is 7.001mm, the interval distance between the fifth lens and the sixth lens on the optical axis is 0.091mm, the refractive index of the fifth lens is 1.945, the dispersion coefficient is 17.943, and the focal length is 8.398;
the interval distance between the sixth lens and the grating on the optical axis is 1.495mm, and the interval distance between the seventh lens and the grating on the optical axis is 3.98mm;
The radius of curvature of the object side surface of the sixth lens is-16.336, the radius of curvature of the image side surface is-10.168, the distance between the seventh lens and the grating on the optical axis is 3.98mm, the center thickness of the seventh lens on the optical axis is 0.093mm, the refractive index of the sixth lens is 1.607, the dispersion coefficient is 56.667, and the focal length is-27.247;
The radius of curvature of the object side surface of the seventh lens is-95.726, the radius of curvature of the image side surface is-6.773, the distance between the sixth lens and the seventh lens on the optical axis is 2.241mm, the center thickness of the eighth lens on the optical axis is 0.99mm, the refractive index of the seventh lens is 1.611, the dispersion coefficient is 55.812, and the focal length is-19;
The radius of curvature of the object side surface of the eighth lens is-6.773, the radius of curvature of the image side surface is 25.495, the distance between the seventh lens and the eighth lens on the optical axis is 0.399mm, the refractive index of the first lens is 1.945, the dispersion coefficient is 17.943, and the focal length is-12.14;
The radius of curvature of the object side surface of the ninth lens is-77.390, the radius of curvature of the image side surface is-11.41, the center thickness of the ninth lens on the optical axis is 2.601mm, the interval distance between the eighth lens and the ninth lens on the optical axis is 0.09mm, the refractive index of the ninth lens is 1.659, the dispersion coefficient is 57.385, and the focal length is 20.247;
The radius of curvature of the object side surface of the tenth lens is 25.925, the radius of curvature of the image side surface is-16.333, the center thickness of the tenth lens on the optical axis is 2.87mm, the distance between the ninth lens and the tenth lens on the optical axis is 11.972mm, the refractive index of the tenth lens is 1.755, the dispersion coefficient is 52.329, and the focal length is 13.86.
2. The industrial inspection lens of claim 1 wherein the first lens, the second lens, the third lens and the fourth lens are negative meniscus lenses;
the fifth lens and the tenth lens are biconvex lenses;
the eighth lens is a biconcave lens;
The sixth lens, the seventh lens and the ninth lens are positive meniscus lenses.
3. The industrial inspection lens of claim 2 wherein said seventh lens and said eighth lens are cemented.
4. The industrial inspection lens of claim 1 wherein the second lens, the third lens, the fifth lens and the eighth lens are high refractive index materials.
5. The industrial inspection lens of claim 1 wherein the sixth lens, the seventh lens and the ninth lens are low refractive index materials.
6. The industrial inspection lens of claim 1 wherein the first lens to the tenth lens are all glass materials.
7. The industrial inspection lens of claim 1, wherein the industrial inspection lens has an operating band range of 700nm to 900nm.
8. The industrial inspection lens of claim 1 wherein the industrial inspection lens has a working distance in the range of 350mm to 850mm.
9. The industrial inspection lens of claim 1 wherein the focal length of the industrial inspection lens is 3.5.
10. A detection apparatus, characterized by an industrial detection lens according to any one of claims 1 to 9.
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| CN202410534390.4A CN118112762B (en) | 2024-04-30 | 2024-04-30 | Industrial detection lens and detection equipment |
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| CN202410534390.4A CN118112762B (en) | 2024-04-30 | 2024-04-30 | Industrial detection lens and detection equipment |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892010A (en) * | 2015-02-17 | 2016-08-24 | 株式会社腾龙 | Optical system and image pickup apparatus |
| CN105929525A (en) * | 2015-02-27 | 2016-09-07 | 株式会社腾龙 | Optical System And Image Pickup Apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013088719A (en) * | 2011-10-20 | 2013-05-13 | Sony Corp | Imaging lens and imaging device |
| CN108469666A (en) * | 2018-03-30 | 2018-08-31 | 福建师范大学 | A kind of achievable visible light and near infrared light confocal camera lens and its imaging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892010A (en) * | 2015-02-17 | 2016-08-24 | 株式会社腾龙 | Optical system and image pickup apparatus |
| CN105929525A (en) * | 2015-02-27 | 2016-09-07 | 株式会社腾龙 | Optical System And Image Pickup Apparatus |
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