CN216869478U

CN216869478U - Wide-spectrum eccentric detector

Info

Publication number: CN216869478U
Application number: CN202220345487.7U
Authority: CN
Inventors: 王俊; 潘杭磊; 金嘉辉; 王健
Original assignee: HANGZHOU ZHIDA ELECTRO-OPTICAL CO LTD
Current assignee: HANGZHOU ZHIDA ELECTRO-OPTICAL CO LTD
Priority date: 2022-01-24
Filing date: 2022-02-21
Publication date: 2022-07-01
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a wide spectrum eccentricity detector, which comprises a shell, a light source, a semi-transparent and semi-reflective plate, a first reflector, a second reflector, a third reflector and a detector, wherein the shell comprises an incident tube, a detection tube and a reflection tube, the semi-transparent and semi-reflective plate is positioned in the detection tube, the first reflector, the second reflector and the third reflector are all positioned in the reflection tube and are sequentially arranged along the axial direction of the reflection tube, the light source is positioned at the upper end of the incident tube, the detector is positioned at the upper end of the detection tube, the lower end of the incident tube is fixed on the side wall of the detection tube and is communicated with the detection tube, the light source and the semi-transparent semi-reflecting plate are oppositely arranged, the lower end of the detection tube is communicated to the reflecting tube, so that the semi-transparent semi-reflecting plate and the second reflecting mirror are oppositely arranged, the first reflecting mirror and the second reflecting mirror are oppositely arranged with the third reflecting mirror, and the side wall of the reflecting tube is provided with a reflecting hole opposite to the first reflecting mirror.

Description

Wide-spectrum eccentric detector

Technical Field

The utility model relates to a wide-spectrum eccentric detector, and belongs to the field of test equipment.

Background

The wide spectrum eccentricity detector is a device for calculating eccentricity by lens imaging deviation, and the inside of the device contains a plurality of spherical mirrors for increasing imaging magnification. The traditional wide-spectrum eccentric detector has the disadvantages that the size is huge due to unreasonable spatial arrangement of spherical mirrors, the cost of a measuring instrument is high, and the testing process is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a wide-spectrum eccentric detector for overcoming the defects of the prior art.

To solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides an eccentric detector of wide spectrum, which comprises a housin, the light source, the half-transmitting half-reflecting board, first speculum, the second mirror, third speculum and detector, the casing includes the incident tube, sense tube and reflection tube, the half-transmitting half-reflecting board is located the sense tube, first speculum, second mirror and third speculum all are located the reflection tube and arrange along the reflection tube axial in proper order, the light source is located the upper end of incident tube, the detector is located the upper end of sense tube, the lower extreme of incident tube is fixed on the lateral wall of sense tube and is linked together with the sense tube, so that light source and half-transmitting half-reflecting board set up relatively, the lower extreme intercommunication of sense tube is to the reflection pipe, so that half-transmitting half-reflecting board sets up relatively with the second mirror, first speculum and second mirror all set up relatively with the third speculum, be provided with the reflection hole relative with first speculum on the lateral wall of reflection tube.

The utility model has the beneficial effects that:

utilize the reflection tube to first speculum, the relative position of second speculum and third speculum three is fixed, and then guarantee that the light path between light source and the revolving stage is stable, on this basis, the lens that awaits measuring is reflecting light to the transflective plate back on the revolving stage, through the projection of transflective plate, directly reach detector department, do not need extra spherical mirror to commutate and image skew enlargies, so the quantity of spherical mirror is showing the reduction compared with prior art, consequently, the volume of whole wide spectrum eccentric detector has also correspondingly obtained showing and has reduced.

The inner wall of the reflecting tube is provided with a support ring, the first reflecting mirror and the third reflecting mirror are respectively fixed on the end walls at the two ends of the reflecting tube, and the second reflecting mirror is fixed on one surface of the support ring facing the third reflecting mirror.

The edge of the second reflector is positioned at the inner side edge of the support ring.

The connecting line of the center of the first reflector and the center of the third reflector is the axis of the support ring.

The included angle between the axis of the detector and the axis of the reflecting tube is 20-30 degrees, and the axis of the detector extends to the center of the second reflecting mirror.

The upper end of the detection tube is provided with a disassembly and assembly port, and the detector is detachably arranged at the disassembly and assembly port and is attached to the inner wall of the disassembly and assembly port, so that the disassembly and assembly port can be used for radially and circumferentially positioning the detector.

The inner wall of the detection pipe is fixed with a mounting seat, the semi-transparent and semi-reflective plate is detachably arranged on the mounting seat, the inner wall of the disassembly and assembly opening is provided with a positioning step for axially positioning the detector, and the detector is clamped at the positioning step, so that the end face of the detector is positioned at the inner side edge of the disassembly and assembly opening, and the mounting seat and the semi-transparent and semi-reflective plate are both separated from the detector.

The lower end of the detection tube is positioned above the third reflector.

The light source is an infrared light source, and the detector is an energy sensor.

The rotating table is arranged below the reflecting hole, and the center of the rotating table, the center of the reflecting hole and the center of the first reflecting mirror are positioned on the same straight line.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the utility model and the accompanying drawings.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a front view cross-sectional structure of a wide-spectrum eccentricity detector according to an embodiment of the present invention;

fig. 2 is a schematic view of a part a of fig. 1.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the following description, the appearances of the indicating orientation or positional relationship such as the terms "inner", "outer", "upper", "lower", "left", "right", etc. are only for convenience in describing the embodiments and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Example 1:

the embodiment provides a wide-spectrum eccentricity detector which comprises a shell, a light source 1, a half-transmitting and half-reflecting plate 2, a first reflecting mirror 3, a second reflecting mirror 4, a third reflecting mirror 5 and a detector 6, wherein the shell comprises an incidence tube 7, a detection tube 8 and a reflection tube 9.

Specifically, the axes of the incident tube 7, the detection tube 8 and the reflection tube 9 are in the same vertical plane, wherein neither the incident tube 7 nor the detection tube 8 is horizontal nor vertical, and the lower end wall of the incident tube 7 is fixed to the outer wall of the detection tube 8, so that the incident tube 7 is communicated with the detection tube 8. The reflection tube 9 is horizontally arranged, the lower end of the detection tube 8 is arranged on the outer wall of the reflection tube 9 and is communicated with the reflection tube 9, and the incidence tube 7 and the detection tube 8 are positioned above the reflection tube 9.

Light source 1 installs in the upper end of incident tube 7, so that light source 1's dismouting, the light that also avoids light source 1 to send simultaneously directly leaks outside incident tube 7, semi-transparent semi-reflecting plate 2 is located detecting tube 8, light source 1 and semi-transparent semi-reflecting plate 2 set up relatively, thereby make the direct directive semi-transparent semi-reflecting plate 2 of light source 1 send, light is after reaching semi-transparent semi-reflecting plate 2, some direct transmission is absorbed by 8 inner walls of detecting tube on the inner wall of detecting tube 8, another partial reflection gets into reflecting tube 9 to the lower extreme of detecting tube 8.

First speculum 3, second speculum 4 and third speculum 5 all are located the reflecting tube 9 and arrange from left to right in proper order along the 9 axial of reflecting tube, wherein first speculum 3, second speculum 4 and third speculum 5 are the spherical mirror, half-transparent half-reflecting plate 2 sets up with second speculum 4 relatively, second speculum 4 all sets up with third speculum 5 relatively, first speculum 3 and third speculum 5 also set up relatively, the meaning that sets up relatively in this embodiment lies in, light can reflect between two mirror surfaces to non-axis coincidence or axis are parallel.

The light reflected by the semi-transparent and semi-reflecting plate 2 firstly reaches the second reflector 4, then reaches the third reflector 5 under the reflection action of the second reflector 4, and reaches the first reflector 3 under the reflection action of the third reflector 5, the side wall of the reflection tube 9 is provided with a reflection hole 91 opposite to the first reflector 3, the reflection hole 91 is positioned below the first reflector 3, the rotating platform 11 is arranged below the reflection hole 91, the lens to be measured is arranged above the rotating platform 11, the theoretical axis of the lens to be measured is superposed with the rotating shaft of the rotating platform 11, the first reflector 3 reflects the light transmitted by the third reflector 5, so that the light is emitted to the lens to be measured on the rotating platform 11 through the reflection hole 91, the lens to be measured reflects the light, the reflected light sequentially reaches the semi-transparent and semi-reflecting plate 2 through the reflection of the first reflector 3, the third reflector 5 and the second reflector 4, a part of the light is reflected toward the light source 1, and the other part of the light passes through the half-transparent plate 2 and is received by the detector 6 positioned at the upper end of the detection tube 8, and the detector 6 images the received light.

Because the theoretical axis and the actual axis of the lens to be measured on the rotating platform 11 are not coincident, a certain distance exists between the actual axis of the lens to be measured and the rotating shaft of the rotating platform 11, and finally deviation is generated in imaging in the detector 6, the imaging in the detector 6 can also rotate along with the rotation of the rotating platform 11, and the distance between the theoretical axis and the actual axis of the lens to be measured can be confirmed by detecting the rotating radius of the imaging in the detector 6, so that the eccentricity of the lens to be measured is obtained. The first reflector 3, the second reflector 4 and the third reflector 5 are used for magnifying the rotation radius of the image formed in the detector 6, so that the rotation of the image formed in the detector 6 can be obviously observed under the condition that the eccentricity of the lens to be measured is small.

The included angles between the incident tube 7 and the detecting tube 8, between the incident tube 7 and the transflective plate 2, and between the detecting tube 8 and the transflective plate 2 are 45 ° in this embodiment, so that the light reflected by the transflective plate 2 to the lower end of the detecting tube 8 is parallel to the axis of the detecting tube 8 as much as possible, so as to ensure the light can be reflected to the second reflecting mirror 4. On the basis, the included angle between the light rays reflected to the semitransparent plate 2 by the second reflector 4 and the axis of the detection tube 8 is not too large, so that the light rays are prevented from contacting the inner wall of the detection tube 8 and being absorbed before reaching the semitransparent plate 2.

The second mirror 4 is located above the first mirror 3 to avoid the second mirror 4 from blocking light between the first mirror 3 and the third mirror 5 and to avoid the first mirror 3 from blocking light between the second mirror 4 and the third mirror 5. The light reflected to the detector 6 by the lens to be detected is reflected by the first reflector 3, the third reflector 5 and the second reflector 4 in sequence, and finally the amplification effect of the imaging eccentricity at the detector 6 is ensured through the reflection action of the three spherical mirrors.

Preferably, a supporting ring 10 is disposed on the inner wall of the reflection pipe 9, the first reflector 3 and the third reflector 5 are respectively fixed on the left end wall and the right end wall of the reflection pipe 9, and the second reflector 4 is fixed on the surface of the supporting ring 10 facing the third reflector 5, so as to ensure the relative effect of the second reflector 4 and the third reflector 5. In addition, the support ring 10 also provides a stable support effect for the second mirror, so that the second mirror 4 can be higher than the first mirror 3, and the second mirror 4 is also located at the lower end position of the inspection pipe 8.

The hole in the center of the support ring 10 allows light between the first mirror 3 and the third mirror 5 to pass through.

In order to avoid that the light between the first mirror 3 and the third mirror 5 impinges on the support ring 10, the light between the first mirror 3 and the third mirror 5 is preferably a horizontal light or a near-horizontal light, on the basis of which the line connecting the center of the first mirror 3 and the center of the third mirror 5 is preferably the axis of the support ring 10.

The first mirror 3 and the third mirror 5 can be relatively large in size because they are located at the ends of the reflection pipe 9, and in contrast to this, in order to avoid the obstruction of the central hole of the support ring 10, the second mirror 4 can only be located within a relatively narrow range at the top of the support ring 10, so that the size of the second mirror 4 is relatively limited. The light reflected by the lens to be measured to the second reflecting mirror 4 may be deviated from the second reflecting mirror 4 due to the large deviation. Conventionally, the conventional idea in the prior art to solve such problems is to adjust the optical path by introducing a plurality of new spherical mirrors between the second mirror 4 and the third mirror 5, but this approach will certainly greatly increase the volume of the reflection tube 9. In the embodiment, to solve the problem, the edge of the second reflecting mirror 4 is located at the inner edge of the supporting ring 10, so as to increase the size of the second reflecting mirror 4, thereby widening the optical path range between the second reflecting mirror 4 and the third reflecting mirror 5, and thus avoiding introducing a new spherical mirror between the second reflecting mirror 4 and the third reflecting mirror 5 to perform optical path reversal.

Conventionally, in order to transmit the light emitted from the light source 1 to the lens to be detected on the rotating platform 11 and reflect the light reflected by the lens to be detected to the detector 6 again, the amplification effect of the eccentricity is ensured, the design of the relative positions of the spherical mirrors is complex, the complex position design causes the number of the spherical mirrors to be too large (at least four spherical mirrors), and the number is difficult to decrease, so that the space of the whole wide-spectrum eccentricity detector occupies a large amount.

In this embodiment, the reflecting tube 9 is used to fix the relative positions of the first reflector 3, the second reflector 4 and the third reflector 5, so as to ensure the stable light path between the light source 1 and the rotating platform 11, on this basis, the lens to be measured on the rotating platform 11 reflects the light to the transflective plate 2, and then the light is projected through the transflective plate 2 to directly reach the detector 6 without requiring an additional spherical mirror to perform reversing and imaging offset amplification, so that the number of the spherical mirrors is significantly reduced compared with the prior art, and thus the volume of the whole wide-spectrum eccentric detector is also significantly reduced.

In order to make the offset of the image formed at the detector 6 sufficiently reflect the eccentricity of the lens to be measured, it is necessary to ensure that the axis of the detector 6 extends to the center of the second mirror 4 to prevent the offset between the axis of the detector 6 and the center of the second mirror 4 from causing the offset of the image formed at the detector 6. Similarly, the center of the turntable 11 and the center of the first reflecting mirror 3 need to be aligned. Of course, the reflecting hole 91 is also required to be located on the straight line to ensure that the light reflected by the lens to be measured to the first reflecting mirror 3 is always avoided by the reflecting hole 91 during the rotation of the rotating platform 11.

The height of the reflection tube 9 is limited, so the height of the third reflector 5 is relatively limited, and the included angle between the optical path between the second reflector 4 and the third reflector 5 and the horizontal plane should be limited to a certain range, so as to avoid the second reflector 4 reflecting light to the inner wall of the bottom of the reflection tube 9. In this embodiment, the angle between the line connecting the center of the second reflector 4 and the center of the third reflector 5 and the horizontal plane is 20-30 °, and the angle between the axis of the detector 6 and the axis of the reflection tube 9 is 20-30 ° according to symmetry.

In this embodiment, the detector 6 is an energy sensor, the detector 6 images through the light transmitted by the semi-transparent and semi-reflective plate 2, the display screen of the detector 6 is positioned outside the upper end of the detection tube 8, and the detector 6 is inclined relative to the horizontal plane, so that an observer can observe imaging deviation of the detector 6 without rotating the neck on the side surface of the reflective tube 9, and therefore misjudgment on the deviation caused by the deviation can be effectively reduced due to the deviation of the observation visual angle.

Of course, a reduction in the number of spherical mirrors reduces the imaging resolution in the detector 6, which is disadvantageous for measuring the offset. However, for the light rays in the infrared spectrum, the reduction of the definition caused by the reduction of the number of spherical mirrors is small and almost negligible, so that the infrared light source 1 is preferably used as the light source 1. And meanwhile, an energy sensor is selected as the detector 6 to detect and image invisible infrared light.

The upper end of detecting tube 8 is provided with dismouting mouth 81, and detector 6 is removable to be installed in dismouting mouth 81 department, because detecting tube 8 and incident tube 7 mutually perpendicular, consequently detector 6 and light source 1's dismouting process can not mutual interference to because detector 6 does not laminate with the outer wall of reflection tube 9, consequently detector 6's dismouting process also is difficult for receiving the hindrance of reflection tube 9. Detector 6 and dismouting mouthful 81 inner wall laminating carry out radial and circumference location then to detector 6, have guaranteed the stability of 6 axes of detector in dismouting mouthful 81 position, avoid the rotation center of formation of image to take place to remove in detector 6, guarantee the accuracy of eccentricity measurement. In addition, the dismounting hole 81 also supports the detector 6, so that no additional supporting structure is required to be arranged on the outer wall of the top of the reflecting tube 9, the space between the detector 6 and the outer wall of the reflecting tube 9 is prevented from being filled, and the dismounting process of the detector 6 is prevented from being influenced.

Based on the foregoing, the stability of the installation angle of the half-transparent and half-reflective plate 2 is also important for the detection result of the eccentricity amount. Wherein the inner wall of the detecting tube 8 is fixed with a mounting seat 82, the mounting seat 82 is located at the dismounting opening 81, the semi-transparent and semi-reflective plate 2 is detachably arranged on the mounting seat 82, and the semi-transparent and semi-reflective plate 2 is fixed to the mounting angle thereof through the mounting seat 82.

The dismouting mouth 81 inner wall is provided with carries out axial positioning's location step 821 to detector 6, detector 6 joint in location step 821 department, detector 6 obtains axial positioning through location step 821 in the installation, thereby avoid detector 6 to get into inside the sense tube 8, thereby ensure that detector 6 dismouting in-process keeps the uniform distance with mount pad 82 and semi-transparent semi-reflecting plate 2 all the time, avoid detector 6 touching mount pad 82 and/or semi-transparent semi-reflecting plate 2, the installation angle that leads to semi-transparent semi-reflecting plate 2 changes, in addition can also avoid light source 1's light direct irradiation to detector 6 in, influence the observation of eccentric volume in the detector 6. Meanwhile, the end face of the detector 6 is located on the inner side edge of the dismounting hole 81, the contact area between the inner wall of the dismounting hole 81 and the outer wall of the detector 6 is maximized, the detector 6 is stably supported through the inner wall of the dismounting hole 81, in addition, the gravity center of the detector 6 can be close to the dismounting hole 81 as far as possible, the dismounting hole 81 only supports the local outer wall of the detector 6, and therefore after the gravity center of the detector 6 is close to the dismounting hole 81, strain of a part of the shell of the detector 6 supported by the inner wall of the dismounting hole 81 can be reduced, and the service life of the detector 6 is prolonged.

While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the utility model as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. A wide spectrum eccentricity detector is characterized by comprising a shell, a light source, a semi-transparent and semi-reflective plate, a first reflector, a second reflector, a third reflector and a detector, wherein the shell comprises an incident tube, a detection tube and a reflection tube, the semi-transparent and semi-reflective plate is positioned in the detection tube, the first reflector, the second reflector and the third reflector are all positioned in the reflection tube and are sequentially arranged along the axial direction of the reflection tube, the light source is positioned at the upper end of the incident tube, the detector is positioned at the upper end of the detection tube, the lower end of the incident tube is fixed on the side wall of the detection tube and is communicated with the detection tube, the light source and the semi-transparent semi-reflecting plate are oppositely arranged, the lower end of the detection tube is communicated to the reflecting tube, so that the semi-transparent semi-reflecting plate and the second reflecting mirror are oppositely arranged, the first reflecting mirror and the second reflecting mirror are oppositely arranged with the third reflecting mirror, and the side wall of the reflecting tube is provided with a reflecting hole opposite to the first reflecting mirror.

2. The broad spectrum eccentricity detector of claim 1, wherein the reflective tube has a support ring on its inner wall, the first reflector and the third reflector are fixed on the end walls of the reflective tube, and the second reflector is fixed on the support ring facing the third reflector.

3. The broad spectrum eccentricity detector of claim 2, wherein the edge of the second mirror is located at an inside edge of the support ring.

4. The broad spectrum eccentricity detector of claim 2, wherein the line connecting the center of the first mirror and the center of the third mirror is the axis of the support ring.

5. The broad spectrum eccentricity detector of claim 1, wherein the detector axis is at an angle of 20-30 ° to the reflector axis and the detector axis extends to the center of the second reflector.

6. The broad spectrum eccentricity detector of claim 5, wherein the upper end of the detection tube is provided with a detachable opening, and the detector is detachably mounted at the detachable opening and attached to the inner wall of the detachable opening, so that the detachable opening can radially and circumferentially position the detector.

7. The broad spectrum eccentric detector of claim 6, wherein the inner wall of the detection tube is fixed with a mounting seat, the semi-transparent and semi-reflective plate is detachably disposed on the mounting seat, the inner wall of the disassembly and assembly opening is provided with a positioning step for axially positioning the detector, and the detector is clamped at the positioning step, so that the end face of the detector is positioned at the inner side edge of the disassembly and assembly opening, and the mounting seat and the semi-transparent and semi-reflective plate are both separated from the detector.

8. The broad spectrum eccentricity detector of claim 5, wherein the lower end of the detector tube is positioned above the third mirror.

9. The broad spectrum eccentricity detector of claim 1, wherein the light source is an infrared light source and the detector is an energy sensor.

10. The broad spectrum eccentricity detector of claim 1, wherein a rotary stage is disposed below the reflective aperture, and the center of the rotary stage, the center of the reflective aperture and the center of the first reflector are aligned.