CN213302652U - Common-view double-magnification telecentric lens - Google Patents

Abstract

The utility model discloses a look two multiplying powers telecentric lens altogether, including the light shunt and install first camera lens and second camera lens on the light shunt, be equipped with first incident port on the light shunt and respectively with first emergent port and the second emergent port of first incident port light path intercommunication, first incident port is just to the measured object, first camera lens is installed in first emergent port department, the second camera lens is installed in second emergent port department. The utility model provides a two multiplying powers telecentric mirror heads in field of vision altogether easy operation, detection efficiency are high, and the light shunt can conduct the light of the object image of catching in first incident port department to first camera lens and second camera lens department respectively, only needs once to detect and can realize that same object image demonstrates the image display of two different multiplying powers, has promoted detection efficiency, has simplified the detection process, does benefit to the improvement that detects the precision.

Description

Common-view double-magnification telecentric lens

Technical Field

The utility model relates to a camera lens technical field especially relates to a double magnification telecentric lens of field of vision altogether.

Background

In industrial high-precision detection application, a plurality of indexes of a certain position of some objects need to be measured, so that the object to be detected can be imaged at a plurality of multiplying powers, and then different test evaluations are carried out on different imaging contents. For example, in some internal grooves with extremely high precision requirements, screw holes are arranged, and in the evaluation process, the quality of the screw holes and the coaxiality of two circles of the screw holes and the internal circular grooves are evaluated. Therefore, a high-magnification lens is required to present the image in the screw hole, and the inner circular groove and the screw hole are imaged, and a small-magnification lens is required to shoot an image with a larger field range and capable of containing the image of the inner circular groove and the screw hole.

At present, the following two methods are adopted for the test demand, one is to use a zoom lens to perform the test, and to manually adjust the focusing and the magnification after a workpiece reaches a specified position, the scheme has low cost, but the zoom lens has uneven imaging quality in actual operation, is obviously not suitable for test items with high precision requirements, needs to change the working distance in the debugging process in order to obtain better imaging, and has low efficiency in batch tests. The second is to use two fixed-focus lenses with different multiplying powers to shoot and test a workpiece twice, because the interference between the lenses and the cameras needs to manually place the workpiece under the corresponding lenses and then acquire images by a computer for testing, the number of procedures is large, and the investment of labor cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a common-view double-magnification telecentric lens is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a look double magnification telecentric lens altogether, include the light shunt and install in first camera lens and second camera lens on the light shunt, be equipped with on the light shunt first incident port and respectively with first emergent port and the second emergent port of first incident port light path intercommunication, first incident port is just to the testee, first camera lens install in first emergent port department, the second camera lens install in second emergent port department.

Furthermore, a second incident port communicated with the first incident port light path is further arranged on the light splitter, and a reinforcing light source is arranged at the second incident port.

Further, an optical axis correction device is arranged between the first incident port and the second incident port.

Further, the second incident port is communicated with the first exit port and/or the second exit port.

Further, be equipped with first beam splitter prism in the light shunt, one side of first beam splitter prism is just right first incident port, the light warp of testee reflection first beam splitter prism transmits respectively to first exit port and second exit port department.

Furthermore, the other side of the first light splitting prism is opposite to the first exit port, and a reflector is further arranged between the first light splitting prism and the second exit port.

Further, the first exit port and the second exit port are located on the same side of the light splitter.

Furthermore, a lens adjusting piece is arranged at the first exit port and/or the second exit port.

Further, the first lens and/or the second lens are detachably connected with the light splitter.

The beneficial effects of the utility model reside in that: the utility model provides a two multiplying powers telecentric mirror heads in field of vision altogether easy operation, detection efficiency are high, and the light shunt can conduct the light of the object image of catching in first incident port department to first camera lens and second camera lens department respectively, only needs once to detect and can realize that same object image demonstrates the image display of two different multiplying powers, has promoted detection efficiency, has simplified the detection process, does benefit to the improvement that detects the precision.

Drawings

Fig. 1 is an assembly view of a common-view double-magnification telecentric lens according to a first embodiment of the present invention;

fig. 2 is a schematic view of a cross-sectional structure of a common-view double-magnification telecentric lens according to an embodiment of the present invention.

Description of reference numerals:

1. a light splitter; 11. a first incident port; 12. a first exit port; 13. a second exit port; 14. a second incident port; 15. a first beam splitting prism; 16. a mirror; 17. a connecting ring; 2. a first lens; 3. a second lens; 4. an optical axis correction device; 41. a second beam splitting prism; 5. and (5) measuring the object.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 and 2, a common-view double-magnification telecentric lens includes a light splitter 1, and a first lens 2 and a second lens 3 mounted on the light splitter 1, where the light splitter 1 is provided with a first incident port 11, and a first exit port 12 and a second exit port 13 respectively communicated with the first incident port 11 through a light path, the first incident port 11 is directly opposite to an object to be measured 5, the first lens 2 is mounted at the first exit port 12, and the second lens 3 is mounted at the second exit port 13.

From the above description, the beneficial effects of the present invention are: the light splitter 1 can conduct the light of the object image captured at the first incident port 11 to the first lens 2 and the second lens 3 respectively, and only one-time detection is needed to realize that the same object image presents image display with two different multiplying powers, so that the detection efficiency is improved, the detection process is simplified, and the detection precision is improved.

Further, a second incident port 14 optically connected to the first incident port 11 is further disposed on the light splitter 1, and a reinforcing light source is disposed at the second incident port 14.

According to the above description, the reinforcing light source can perform brightness compensation on the object to be detected 5, so that the imaging definition of the first lens 2 and the second lens 3 is ensured, and the detection precision is further improved.

Further, an optical axis correction device 4 is disposed between the first incident port 11 and the second incident port 14.

As can be seen from the above description, the optical axis correction device 4 is convenient for adjusting the position of the light projected by the reinforcing light source, and ensures that the light projected by the reinforcing light source can vertically irradiate the measured surface of the measured object 5.

Further, the second incident port 14 communicates with the first exit port 12 and/or the second exit port 13.

As can be seen from the above description, the second incident port 14 can be set according to the actual application requirements, so that the diversity of the common-view double-magnification telecentric lens is enriched.

Further, a first light splitting prism 15 is arranged in the light splitter 1, one side of the first light splitting prism 15 is opposite to the first incident port 11, and the light reflected by the object to be measured 5 is transmitted to the first exit port 12 and the second exit port 13 through the first light splitting prism 15 respectively.

As can be seen from the above description, the first beam splitter prism 15 can transmit the light reflected by the object to be measured 5 to the first exit port 12 and the second exit port 13, respectively.

Further, the other side of the first light splitting prism 15 faces the first exit port 12, and a reflector 16 is further disposed between the first light splitting prism 15 and the second exit port 13.

As can be seen from the above description, the reflector 16 can guide the light refracted by the first light splitting prism 15 to the second exit port 13 for being captured by the second lens 3.

Further, the first exit port 12 and the second exit port 13 are located on the same side of the light splitter 1.

As can be seen from the above description, the first exit port 12 and the second exit port 13 are located on the same side of the light splitter 1, which facilitates the assembly of the first lens 2 and the second lens 3, and simplifies the difficulty in adjusting the first lens 2 and the second lens 3.

Further, a lens adjusting part is arranged at the first exit port 12 and/or the second exit port 13.

As can be seen from the above description, the lens adjusting part facilitates the installation and debugging of the first lens 2 and/or the second lens 3, and can be set according to the actual application requirements.

Further, the first lens 2 and/or the second lens 3 are detachably connected to the light splitter 1.

Example one

Referring to fig. 1 and fig. 2, a first embodiment of the present invention is: the utility model provides a look two multiplying powers telecentric lens altogether, includes light splitter 1 and install in first camera lens 2 and second camera lens 3 on the light splitter 1, be equipped with first incident port 11 on the light splitter 1 and respectively with first emergent port 12 and the second emergent port 13 of 11 light paths intercommunication of first incident port, first incident port 11 is just to measured object 5, first camera lens 2 install in first emergent port 12 department, second camera lens 3 install in second emergent port 13 department, in this embodiment, first camera lens 2 is high magnification camera lens, second camera lens 3 is low magnification camera lens.

Specifically, a first light splitting prism 15 is arranged in the light splitter 1, one side of the first light splitting prism 15 is opposite to the first incident port 11, and the light reflected by the object to be measured 5 is transmitted to the first exit port 12 and the second exit port 13 through the first light splitting prism 15; more specifically, the other side of the first beam splitter prism 15 is opposite to the first exit port 12, a reflector 16 is further disposed between the first beam splitter prism 15 and the second exit port 13, it is easy to understand that the first beam splitter prism 15 can transmit the light reflected by the object to be measured 5 to the first exit port 12 and the second exit port 13 respectively, and the reflector 16 can transmit the light refracted by the first beam splitter prism 15 to the second exit port 13 for the second lens 3 to capture.

Preferably, the first exit port 12 and the second exit port 13 are located on the same side of the optical splitter 1, and it is easy to understand that the first exit port 12 and the second exit port 13 are located on the same side of the optical splitter 1, which can facilitate the assembly of the first lens 2 and the second lens 3, and simplify the difficulty in adjusting the first lens 2 and the second lens 3.

Optionally, a lens adjusting part is disposed at the first exit port 12 and/or the second exit port 13, specifically in this embodiment, the lens adjusting part is disposed at the first exit port 12, the lens adjusting part is a connection ring 17, and the connection ring 17 is used to fix the first lens 2 and adjust the verticality of the first lens 2 relative to the wall surface of the light splitter 1; in other embodiments, the connection ring 17 can also be disposed at the second exit port 13 to fix the second lens 3 and adjust the verticality of the second lens 3 relative to the wall of the light splitter 1; as will be readily understood, the lens adjusting member facilitates the installation and adjustment of the first lens 2 and/or the second lens 3, and can be set according to the actual application requirements.

Optionally, the first lens 2 and/or the second lens 3 are detachably connected to the light splitter 1, that is, the light splitter 1 may be provided with the first lens 2 and detachably connected to the second lens 3, may be provided with the second lens 3 and detachably connected to the first lens 2, and may be detachably connected to both the first lens 2 and the second lens 3; the setting can be specifically carried out according to the actual application requirements.

Preferably, the light splitter 1 is further provided with a second incident port 14 optically connected to the first incident port 11, the second incident port 14 is provided with a reinforcing light source, specifically, the reinforcing light source emits reinforcing light from the second incident port 14, the reinforcing light is transmitted to the first incident port 11 through the light splitter 1 and vertically irradiates the surface of the object to be measured 5, at this time, the object to be measured 5 reflects the reinforcing light received by the object to form reflected light, the reflected light is transmitted to the first exit port 12 and the second exit port 13 through the first incident port 11 and is transmitted to the first lens 2 and the second lens 3 respectively for capturing and imaging, which is easy to understand, the reinforcing light source can perform brightness compensation on the object to be measured 5 to ensure the definition of imaging of the first lens 2 and the second lens 3, the detection precision is further improved, optionally, the second incident port 14 is communicated with the first exit port 12 and/or the second exit port 13, and the second incident port 14 can be specifically set according to actual application requirements, so that the structural types are enriched.

In this embodiment, the optical path of the second incident port 14 communicating the first incident port 11 and the second exit port 13, that is, the optical axis of the reinforcing light should coincide with the optical axis of the reflected light reflected to the second exit port 13 by the object 5, so that, in order to ensure that the reinforcing light projected by the reinforcing light source can be accurately irradiated to the surface of the object 5 and ensure that the optical axis of the reflected light received by the second lens 3 coincides with the optical axis of the reinforcing light, an optical axis correction device 4 is disposed between the first incident port 11 and the second incident port 14, specifically, the optical axis correction device 4 includes a second beam splitter prism 41 disposed near the second exit port 13, which is easy to understand, and the optical axis correction device 4 is convenient to adjust the position of the light projected by the reinforcing light source, and ensuring that the light projected by the reinforcing light source can vertically irradiate the measured surface of the measured object 5.

To sum up, the utility model provides a two multiplying powers telecentric lens in field of vision altogether has simple structure, the efficient characteristics of formation of image, only needs once to detect and can realize that same object image demonstrates the image display of two different multiplying powers, has promoted detection efficiency, has simplified the detection procedure, does benefit to the improvement of detection precision.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims (9)

1. The utility model provides a look two multiplying powers telecentric lens altogether, its characterized in that, include the light shunt and install in first camera lens and second camera lens on the light shunt, be equipped with on the light shunt first incident port and respectively with first emergent port and the second emergent port of first incident port light path intercommunication, first incident port is just to the testee, first camera lens install in first emergent port department, the second camera lens install in second emergent port department.

2. The common-field double-magnification telecentric lens according to claim 1, wherein the light splitter is further provided with a second incident port optically connected to the first incident port, and the second incident port is provided with a reinforcing light source.

3. A common-field double-magnification telecentric lens according to claim 2, wherein an optical axis correction device is arranged between the first incident port and the second incident port.

4. A common-field double-magnification telecentric lens according to claim 2, wherein the second incident port is communicated with the first exit port and/or the second exit port.

5. The common-field double-magnification telecentric lens according to claim 1, wherein a first beam splitter prism is arranged in the light splitter, one side of the first beam splitter prism is opposite to the first incident port, and the light reflected by the object to be measured is transmitted to the first exit port and the second exit port through the first beam splitter prism respectively.

6. The common-field double-magnification telecentric lens according to claim 5, wherein the other side of the first beam splitter prism faces the first exit port, and a reflector is further disposed between the first beam splitter prism and the second exit port.

7. A common-field double-magnification telecentric lens according to claim 1, wherein the first exit port and the second exit port are located on the same side of the ray splitter.

8. A common-field double-magnification telecentric lens according to claim 1, wherein a lens adjusting piece is arranged at the first exit port and/or the second exit port.

9. A common-field double-magnification telecentric lens according to claim 1, wherein the first lens and/or the second lens are detachably connected to the light splitter.

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