TWI579548B - Lens focusing device and replaceable chart display module - Google Patents

Description

Lens focusing device and its replaceable chart display module

The invention relates to a focusing device and a chart display module thereof, in particular to a lens focusing device and an replaceable chart display module thereof.

The existing manual focus measuring machine usually has a manual focusing device, and the operator obtains a clear image of the object to be tested by adjusting the manual focusing device. The measuring instrument is characterized by simple structure and low cost, but lacks system stability. Sex and reliability, in the focus process, the sharpness of the image can only be recognized by the human eye. Different operators have different recognition of the same image sharpness, which may require repeated measurement of the same image. In the process of measuring the workpiece, the sharpness of the image directly affects the accuracy of the image focus, which in turn affects the accuracy of the image measurement result.

Therefore, the prior art proposes an image focus display system, which instantly displays the clarity of the current image in a curved graph during manual focusing, improves the accuracy of image focusing, and avoids repeated measurement of the same image by different operators. However, the curve patterns provided by the conventional image focus display system are fixed and cannot be replaced.

The technical problem to be solved by the present invention is to provide a lens focusing device and an replaceable chart display module thereof for the deficiencies of the prior art.

In order to solve the above technical problem, one technical solution adopted by the present invention is to provide a lens focusing device, which comprises: a lens clamping module, a replaceable graphic display module and a focal length shortening module. The lens clamping module is clamped At least one lens to be tested. The replaceable chart display module includes a frame structure, a first chart display element detachably disposed on the frame structure, and a plurality of second chart displays detachably disposed on the frame structure An element, wherein each of the second chart display elements is tilted by a predetermined angle relative to the first chart display element. The focal length shortening module includes a first focal length shortening structure and a plurality of second focal length shortening structures, wherein the first focal length shortening structure is disposed between at least one of the to-be-tested lenses and the first graphic display element, And each of the second focal length shortening structures is disposed between at least one of the to-be-tested lenses and the corresponding second chart display element.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide an alternative chart display module, comprising: a frame structure, a first chart display element and a plurality of second chart display elements. The first chart display element is detachably disposed on the frame structure. A plurality of the second chart display elements are detachably disposed on the frame structure, wherein each of the second chart display elements is inclined by a predetermined angle with respect to the first chart display element.

The invention provides a lens focusing device and an alternative chart display module thereof, which are detachably disposed on the frame structure by the first chart display element. And a design of "a plurality of the second chart display elements are detachably disposed on the frame structure" such that the first chart display element and the plurality of the second chart display elements are all replaceable The chart is used to increase the convenience of the user when performing lens focusing.

In addition, the lens focusing device and the replaceable chart display module thereof are provided by the embodiment of the present invention, and the first focal length shortening structure is disposed on at least one of the to-be-tested lens and the first graphic display. "Between the components" and "each of the second focal length shortening structures are disposed between at least one of the to-be-tested lenses and the corresponding second graphic display element" such that the lens focusing device can Cooperating with the first focal length shortening structure and the plurality of the second focal length shortening structures to shorten between the first graphic display element and the at least one of the to-be-tested lenses Distance and shortening a distance between the second chart display element and at least one of the lenses to be tested, thereby effectively reducing the overall height of the lens focusing device.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

Z‧‧‧ lens focusing equipment

1‧‧‧Lens Clamping Module

2‧‧‧Replaceable chart display module

20‧‧‧Frame structure

201‧‧‧ first frame

2011‧‧‧First body

20111‧‧‧ Side

2012‧‧‧First clamping piece

2012A‧‧‧First Fixed Department

2012B‧‧First Limitation Department

2012C‧‧‧First Pressure Relief Department

202‧‧‧ second framework

2021‧‧‧Second body

2021A‧‧‧Extension arm

2021B‧‧‧Extension arm

2022‧‧‧Second grip

2022A‧‧‧Second Fixed Department

2022B‧‧‧Second Limitation

2022C‧‧‧Second Pressure Relief Department

21‧‧‧The first chart display component

22‧‧‧Second chart display component

3‧‧‧Focus shortening module

31‧‧‧First focal length shortening structure

310‧‧‧ telephoto lens

32‧‧‧second focal length shortening structure

320‧‧‧Mirror

W‧‧‧Densable lens

S‧‧‧ image sensing components

L1‧‧‧First corrected image beam

L2‧‧‧Second corrected image beam

θ 1 , θ 2‧‧‧ predetermined angle

1 is a side cross-sectional view of a lens focusing device of the present invention.

2 is a perspective view showing one of the viewing angles of the replaceable graphic display module of the lens focusing device of the present invention.

3 is a perspective view showing another viewing angle of the replaceable graphic display module of the lens focusing device of the present invention.

4 is a perspective view showing the frame structure of an alternative chart display module of the lens focusing device of the present invention.

5 is a side elevational view of the first frame of the frame structure of the replaceable chart display module of the lens focusing device of the present invention.

6 is a side elevational view of a second frame of a frame structure of an alternative chart display module of the lens focusing device of the present invention.

7 is a side cross-sectional view showing another alternative chart display module used in the lens focusing device of the present invention.

FIG. 8 is a schematic diagram of the first focal length shortening structure of the lens focusing device of the present invention and the lens to be tested are both positioned on the lens clamping module.

The following is a specific example to illustrate the implementation of the "lens focusing device and its replaceable graphic display module" disclosed by the present invention. Those skilled in the art can understand the advantages and advantages of the present invention from the contents disclosed in the present specification. efficacy. The present invention can be implemented or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. In addition, the drawings of the present invention are only for the sake of simplicity, and The depiction of the actual size is not described first. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the technical scope of the present invention.

Referring to FIG. 1 to FIG. 6 , the present invention provides a lens focusing device Z, which includes: a lens clamping module 1 , a replaceable graphic display module 2 , and a focal length shortening module 3 .

First, as shown in FIG. 1 to FIG. 2, the lens clamping module 1 can be used to clamp at least one lens W to be tested. For example, at least one of the to-be-measured lenses W can be a non-wide-angle lens, a wide-angle lens, or an ultra-wide-angle lens. In addition, the lens clamping module 1 can be a six-axis optical adjustment mechanism with a six-axis direction adjustment function, wherein the six-axis direction adjustment can include an X-axis direction adjustment, a Y-axis direction adjustment, a Z-axis direction adjustment, and a spin angle adjustment. The front and rear deflection angle adjustment, the left and right deflection angle adjustment, and the like, however, the lens clamping module 1 of the present invention is not limited by this example.

Furthermore, as shown in FIG. 2 and FIG. 3, the replaceable chart display module 2 includes a frame structure 20, a first chart display element 21 detachably disposed on the frame structure 20, and a plurality of detachably A second chart display element 22 is provided on the frame structure 20. Therefore, the first graph display element 21 and the plurality of second graph display elements 22 are all diagrams of the alternative, thereby increasing the convenience of the user in performing lens focusing. It is worth mentioning that the first graph display element 21 and the plurality of second graph display elements 22 can be replaced at the same time.

Furthermore, as shown in FIG. 2, FIG. 3 and FIG. 4, the frame structure 20 includes a first frame 201 and a plurality of second frames 202 respectively fixedly or adjustably disposed on the first frame 201. It should be noted that FIG. 1 to FIG. 6 disclosed in the present invention are all described by taking "the plurality of second frames 202 are respectively fixedly disposed on the first frame 201". However, this example is not intended to be limiting. this invention. For example, a pivoting structure may be disposed between the first frame 201 and the second frame 202. That is, the second frame 202 may be pivotally disposed on the first frame 201 through a pivoting structure to facilitate the user. The second frame can be adjusted according to different usage requirements. The angle of inclination of the frame 202 relative to the first frame 201.

As shown in FIG. 2, FIG. 3 and FIG. 4, the first frame 201 includes a first frame body 2011 and a plurality of first clamping members 2012 disposed on the first frame body 2011, and each of them The second frame 202 includes a second frame 2021 fixedly (or adjustably) disposed on the first frame body 2011 and a plurality of second clamping members 2022 disposed on the second frame body 2021. Further, the first frame body 2011 has a plurality of side edge portions 20111, and the plurality of second frame bodies 2021 are fixedly (or adjustably) disposed on the plurality of side portions 20111 of the first frame body 2011, respectively. . In addition, as shown in FIG. 1 , since each second frame 2021 can be inclined by a predetermined angle θ 1 with respect to the first frame 2011 according to different requirements, each second chart display element 22 is also relative to the first The graph display element 21 is tilted by a predetermined angle θ 2 . That is, a predetermined angle θ 2 of the second graph display element 22 with respect to the first graph display element 21 may be determined according to a predetermined angle θ 1 of the second frame body 2021 with respect to the first frame body 2011.

Thereby, as shown in FIG. 2 or FIG. 3, the first chart display element 21 can be clamped by the plurality of first clamping members 2012 of the first frame 201 to be positioned on the first frame body 2011, and each A second chart display element 22 can be positioned by the clamping of the plurality of second clamping members 2022 of the corresponding second frame 202 to be positioned on the corresponding second frame body 2021.

For example, as shown in FIG. 2 or FIG. 4, each of the second frames 2021 includes at least two extension arms (2021A, 2021B) fixedly (or adjustably) disposed on the first frame 2011, and Each of the second graph display elements 22 can be clamped by the plurality of second grips 2022 of the corresponding second frame 202 to be positioned at at least two extension arms of the corresponding second frame 2021 (2021A, Between 2021B). However, the second frame 2021 of the present invention is not limited by this example.

For example, as shown in FIG. 4 and FIG. 5, the first clamping member 2012 of the first frame 201 has a first fixing portion 2012A fixed to the first frame body 2011, and a first fixing portion 2012A extending from the first fixing portion 2012A. And limit the bit of the first chart display element 21 The first limiting portion 2012B and a first pressing portion 2012C connected to the first limiting portion 2012B and pressing against the first graph display element 21 are provided. That is to say, the first graph display element 21 can obtain a better positioning effect by the cooperation of the first limiting portion 2012B and the first pressing portion 2012C. However, the first clamping member 2012 of the present invention is not limited by this example.

For example, as shown in FIG. 4 and FIG. 6, the second clamping member 2022 of the second frame 202 has a second fixing portion 2022A fixed to the second frame 2021 and a second fixing portion 2022A extending from the second fixing portion 2022A. A second limiting portion 2022B that limits the position of the second graph display element 22 and a second pressing portion 2022C that is coupled to the second limiting portion 2022B and that oppresses the second graph display element 22 are provided. That is to say, the second graph display element 22 can obtain a better positioning effect by the cooperation of the second limiting portion 2022B and the second pressing portion 2022C. However, the second clamping member 2022 of the present invention is not limited by this example.

Furthermore, as shown in FIG. 1 , the focal length shortening module 3 includes a first focal length shortening structure 31 and a plurality of second focal length shortening structures 32 , wherein the first focal length shortening structure 31 is disposed on at least one of the to-be-tested lenses and the first A chart display element 21 is provided, and each second focal length shortening structure 32 is disposed between at least one of the to-be-tested lenses W and the corresponding second chart display element 22. For example, the first focal length shortening structure 31 may include at least one telephoto lens 310, and each of the second focal length shortening structures 32 may include at least two mirrors 320, however, the first focal length shortening structure 31 and the second of the present invention The focal length shortening structure 32 is not limited to this example.

As described above, a first chart image presented by the first chart display component 21 can sequentially pass through at least one telephoto lens 310 and at least one lens to be tested W to form a projection on an image sensing element S. The first corrected image beam L1. In addition, a second chart image presented by each of the second graphic display elements 22 can be sequentially passed through at least one of the mirrors to be tested W through the reflection of at least two mirrors 320 to form a projected image sensing element. The second corrected image beam L2 on S. Thereby, the lens focusing device Z of the present invention can obtain the first school obtained by the image sensing element S. The positive image beam L1 and the second corrected image beam L2 are used to perform focusing of at least one of the to-be-measured lenses W.

It should be noted that the lens focusing device Z of the present invention can shorten the use of the first focal length shortening structure 31 to shorten the distance between the first graphic display element 21 and the at least one lens to be tested W, and the lens focusing device of the present invention Z can shorten the use of structure 32 by the second focal length to shorten the distance between second chart display element 22 and at least one lens W to be tested. That is, the present invention can effectively reduce the overall height of the lens focusing device Z by the cooperation of the first focal length shortening structure 31 and the plurality of second focal length shortening structures 32.

Referring to FIG. 7, a plurality of second frames 202 of the frame structure 20 are pivotally disposed on the first frame 201. Therefore, as shown by the rotation adjustment arrow of FIG. 7, when each of the second frames 2021 is adjusted with respect to a predetermined angle θ 1 inclined by the first frame 2011, each of the second chart display elements 22 is opposite to the first A predetermined angle θ 2 at which a graph display element 21 is tilted is also adjusted. That is to say, according to different usage requirements, a predetermined angle θ 2 of the second graph display element 22 inclined with respect to the first graph display element 21 may be inclined according to the second frame body 2021 with respect to the first frame body 2011. The angle θ 1 is determined. It should be noted that, as shown by the elevation adjustment arrow of FIG. 7, since the frame structure 20 can also be adjusted for lifting, the first chart display element 21 and the plurality of second chart display elements 22 can follow the lifting of the frame structure 20. To adjust the lift.

Referring to FIG. 8 , the lens focusing device Z of the present invention can also directly set the first focal length shortening structure 31 on the lens clamping module 1 such that at least one of the to-be-measured lenses W and the first focal length shortening structure 31 At least one telephoto lens 310 can be simultaneously clamped on the lens clamping module 1 , so that at least one of the to-be-measured lens W and the at least one telephoto lens 310 can be simultaneously adjusted by the lens clamping module 1 at any angle. . In other words, at least one telephoto lens 310 can be added to the at least one lens to be tested as a pair of glasses, so that at least one telephoto lens 310 can swing with at least one lens W to be tested. And scanning the first chart display element 21 and a plurality of The second graph shows the element 22 (i.e., the CHART map of the five-zone scan), which has the advantage that the reduced optical path can be achieved at the same time, and the finished product of at least one of the to-be-measured lenses W can be attained by the miniaturized machine.

[Effective effect of the embodiment]

In summary, the lens focusing device Z and the replaceable chart display module 2 thereof are provided by the embodiment of the present invention, which can be detachably disposed on the first chart display element 21 The design of the frame structure 20 and the plurality of second chart display elements 22 are detachably disposed on the frame structure 20 such that the first chart display element 21 and the plurality of second chart display elements 22 are all replaceable Sexual chart to increase the convenience of the user when focusing on the lens.

In addition, the lens focusing device Z and the replaceable chart display module 2 thereof provided by the embodiments of the present invention can be disposed on at least one of the to-be-measured lens W and the first chart display element 21 by the “first focal length shortening structure 31”. "Between each" and "each second focal length shortening structure 32 is disposed between at least one of the to-be-measured lens W and the corresponding second graphic display element 22" so that the lens focusing device Z can be shortened by the first focal length The structure 31 and the plurality of second focal length shortening structures 32 are used in combination to shorten the distance between the first chart display element 21 and the at least one lens to be tested W, and shorten the second chart display element 22 and the at least one lens to be tested W The distance between this is used to effectively reduce the overall height of the lens focusing device Z.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by using the present specification and the contents of the drawings are included in the protection scope of the present invention. .

Z‧‧‧ lens focusing equipment

1‧‧‧Lens Clamping Module

2‧‧‧Replaceable chart display module

20‧‧‧Frame structure

201‧‧‧ first frame

2011‧‧‧First body

202‧‧‧ second framework

2021‧‧‧Second body

21‧‧‧The first chart display component

22‧‧‧Second chart display component

3‧‧‧Focus shortening module

31‧‧‧First focal length shortening structure

310‧‧‧ telephoto lens

32‧‧‧second focal length shortening structure

320‧‧‧Mirror

W‧‧‧Densable lens

S‧‧‧ image sensing components

L1‧‧‧First corrected image beam

L2‧‧‧Second corrected image beam

θ 1 , θ 2‧‧‧ predetermined angle

Claims (18)

A lens focusing device includes: a lens clamping module, the lens clamping module clamping at least one lens to be tested; and an replaceable graphic display module, wherein the replaceable graphic display module comprises a frame structure, a first chart display element detachably disposed on the frame structure, and a plurality of second chart display elements detachably disposed on the frame structure, wherein each of the second chart The display element is inclined by a predetermined angle with respect to the first graphic display element; and a focal length shortening module comprising a first focal length shortening structure and a plurality of second focal length shortening structures, wherein the first a focal length shortening structure is disposed between the at least one of the to-be-tested lens and the first chart display element, and each of the second focal length shortening structures is disposed on at least one of the to-be-tested lens and the corresponding second The chart shows between components. The lens focusing device of claim 1, wherein the frame structure comprises a first frame and a plurality of second frames respectively fixedly or adjustably disposed on the first frame. The lens focusing device of claim 2, wherein the first frame comprises a first frame and a plurality of first clamping members disposed on the first frame, and each of the The two frames include a second frame fixedly or adjustably disposed on the first frame and a plurality of second clamping members disposed on the second frame. The lens focusing device of claim 3, wherein the first frame has a plurality of side portions, and the plurality of the second frames are fixedly or adjustably disposed on the first frame And a plurality of the side portions, and each of the second frames is inclined by a predetermined angle with respect to the first frame. The lens focusing device of claim 3, wherein the first graphic display element is clamped by a plurality of the first clamping members of the first frame to be positioned at And clamping the plurality of the second clamping members of the corresponding second frame to the corresponding first On the two bodies. The lens focusing device of claim 3, wherein each of the second frames includes at least two extension arms fixedly or adjustably disposed on the first frame, and each of the a second chart showing the clamping of the element by a plurality of the second clamping members of the corresponding second frame to be positioned between at least two of the extending arms of the corresponding second frame . The lens focusing device of claim 3, wherein the first clamping member has a first fixing portion fixed to the first frame body, and a first fixing portion extends from the first fixing portion a first limiting portion that limits a position of the first graphic display element, and a first pressing portion connected to the first limiting portion and pressing the first graphic display element, and the second The clamping member has a second fixing portion fixed to the second frame body, a second limiting portion extending from the second fixing portion and restricting a position of the second chart display element, and a second pressing portion connected to the second limiting portion and pressing against the second graphic display element. The lens focusing device of claim 1, wherein the first focal length shortening structure comprises at least one telephoto lens, and a first chart image presented by the first graphic display element sequentially passes through at least one The telephoto lens and the at least one lens to be tested are formed to form a first corrected image beam projected on an image sensing element. The lens focusing device of claim 1, wherein each of the second focal length shortening structures comprises at least two mirrors, and a second chart image presented by each of the second chart display elements is sequentially The at least one of the to-be-detected lenses is passed through the reflection of at least two of the mirrors to form a second corrected image beam projected onto an image sensing element. The lens focusing device of claim 1, wherein the first focal length shortening structure is disposed on the lens clamping module such that at least one of the to-be-tested lenses is The first focal length shortening structure is clamped on the lens clamping module. The lens focusing device of claim 10, wherein the first focal length shortening structure comprises at least one telephoto lens, and at least one of the telephoto lenses is swung with at least one of the lenses to be tested and scanned The first chart display element and a plurality of the second chart display elements. An alternative chart display module comprising: a frame structure; a first chart display element, the first chart display element being detachably disposed on the frame structure; and a plurality of second chart display elements, A plurality of the second chart display elements are detachably disposed on the frame structure, wherein each of the second chart display elements is inclined by a predetermined angle with respect to the first chart display element. The replaceable chart display module of claim 12, wherein the frame structure comprises a first frame and a plurality of second frames respectively fixedly or adjustably disposed on the first frame. The replaceable chart display module of claim 13, wherein the first frame comprises a first frame and a plurality of first clamping members disposed on the first frame, and each The second frame includes a second frame fixedly or adjustably disposed on the first frame and a plurality of second clamping members disposed on the second frame. The replaceable chart display module of claim 14, wherein the first frame has a plurality of side portions, and the plurality of the second frames are fixedly or adjustably disposed in the first a plurality of said side portions of a body, and each of said second frames is inclined at a predetermined angle with respect to said first frame. The replaceable chart display module of claim 14, wherein the first graphic display element is clamped by the plurality of the first clamping members of the first frame to be positioned at the first a body, and each of the second chart display elements passes through a folder of the plurality of the second clamping members of the corresponding second frame Hold to position on the corresponding second frame. The replaceable chart display module of claim 14, wherein each of the second frames includes at least two extension arms fixedly or adjustably disposed on the first frame, and each One of the second graphic display elements is clamped by a plurality of the second clamping members of the corresponding second frame to position at least two of the extensions of the corresponding second frame Between the arms. The replaceable chart display module of claim 14, wherein the first clamping member has a first fixing portion fixed to the first frame body and a first fixing portion extending from the first fixing portion a first limiting portion that limits the position of the first graph display element, and a first pressing portion that is coupled to the first limiting portion and that oppresses the first graph display element, and The second clamping member has a second fixing portion fixed to the second frame body, a second limit extending from the second fixing portion and restricting a position of the second chart display element And a second pressing portion connected to the second limiting portion and pressing against the second graphic display element.