TWI609226B - Lens focusing device and telephoto lens module thereof - Google Patents

Description

Lens focusing device and telephoto lens module thereof

The invention relates to a focusing device and a lens module thereof, in particular to a lens focusing device and a telephoto lens 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. With reliability, in the process of focusing, 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 that instantly displays the sharpness of the current image in a curved pattern during manual focusing, thereby improving the accuracy of image focus and avoiding repeated measurement of the same image by different operators.

However, the design of the detection optical path used in the prior art manual focusing device is too complicated, resulting in an optical path that is too long to reduce the overall height of the manual focusing device.

The technical problem to be solved by the present invention is to provide a lens focusing device and a telephoto lens 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 graphic display module and a telephoto lens module. The lens clamping module holds at least one waiting Measuring lens. The chart display module includes a chart frame structure, a first chart display element disposed on the chart frame structure, and a plurality of second chart display elements disposed on the chart frame structure, wherein each The second graph display element is tilted by a first predetermined angle relative to the first graph display element. The telephoto lens module includes a lens frame structure, a first telephoto lens disposed on the lens frame structure, and a plurality of second telephoto lenses disposed on the lens frame structure, wherein each The second telephoto lens is tilted by a second predetermined angle with respect to the first telephoto lens. Wherein the first telephoto lens is disposed between at least one of the to-be-tested lens and the first graphic display element, and each of the second telephoto lenses is disposed on at least one of the to-be-tested lens and phase Corresponding said second chart shows between elements.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a lens focusing device, which comprises: a lens clamping module, a graphic display module and a telephoto lens module. The lens clamping module holds at least one lens to be tested. The chart display module includes a first chart display element and a plurality of second chart display elements, wherein each of the second chart display elements is tilted by a first predetermined angle relative to the first chart display element. The telephoto lens module includes a first telephoto lens and a plurality of second telephoto lenses, wherein each of the second telephoto lenses is tilted by a second predetermined angle with respect to the first telephoto lens. Wherein the first telephoto lens is disposed between at least one of the to-be-tested lens and the first graphic display element, and each of the second telephoto lenses is disposed on at least one of the to-be-tested lens and phase Corresponding said second chart shows between elements.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a telephoto lens module including: a lens frame structure, a first telephoto lens, and a plurality of second telephoto lenses. The first telephoto lens is disposed on the lens frame structure and corresponds to a first chart display element. A plurality of the second telephoto lenses are disposed on the lens frame structure and respectively correspond to a plurality of second chart display elements, wherein each of the second telephoto lenses is inclined to the first telephoto lens Lens.

The lens focusing device and the telephoto lens module thereof are provided by the embodiment of the present invention, and the first telephoto lens is disposed on at least one of the to-be-tested lens and the first a diagram showing between the elements "and each of the second telephoto lenses disposed between at least one of the to-be-tested lenses and the corresponding second chart display element" to cause the lens to be adjusted The focusing device can be used by the cooperation of the first telephoto lens and the plurality of the second telephoto lenses to shorten the distance between the first chart display element and the at least one lens to be tested, and shorten the The second graph displays the distance between the component 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‧‧‧Chart display module

20‧‧‧Chart frame structure

201‧‧‧ first chart 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 chart 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‧‧‧Telephoto lens module

30‧‧‧Lens frame structure

301‧‧‧First lens frame

3010‧‧‧First through hole

302‧‧‧second lens frame

3020‧‧‧Second through hole

31‧‧‧First telephoto lens

32‧‧‧Second telephoto lens

W‧‧‧Densable lens

S‧‧‧ image sensing components

L1‧‧‧First corrected image beam

L2‧‧‧Second corrected image beam

Θ1‧‧‧first predetermined angle

Θ2‧‧‧second predetermined angle

α‧‧‧Predetermined adjustable angle

1 is a side elevational view of a lens focusing device in accordance with an embodiment of the present invention.

2 is a perspective view of a lens focusing device according to an embodiment of the present invention.

3 is a perspective view of a telephoto lens module of a lens focusing device according to an embodiment of the present invention.

4 is a perspective view showing one of viewing angles of a graphic display module of a lens focusing device according to another embodiment of the present invention.

FIG. 5 is a perspective view showing another viewing angle of a graph display module of a lens focusing device according to another embodiment of the present invention.

6 is a perspective view showing the structure of a chart frame of a graph display module of a lens focusing device according to another embodiment of the present invention.

7 is a side elevational view showing a first frame of a chart frame structure of a graph display module of a lens focusing device according to another embodiment of the present invention.

8 is a side elevational view of a second frame of a chart frame structure of a chart display module of a lens focusing device according to another embodiment of the present invention.

9 is a side cross-sectional view showing another graph display module used in a lens focusing device according to still another embodiment of the present invention.

The following is a specific embodiment to illustrate the implementation of the "lens focusing device and its telephoto lens module" disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in the specification. . The present invention may be carried out 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 merely illustrative and are not intended to be construed in terms of actual dimensions. 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. Please refer to FIG. 1 to FIG. 9 for the contents disclosed in the following embodiments.

Referring to FIG. 1 to FIG. 3 , an embodiment of the present invention provides a lens focusing device Z, which includes a lens clamping module 1 , a graphic display module 2 , and a telephoto lens module 3 .

First, as shown in FIG. 1, 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, front and rear deflection angle adjustment, right and left deflection angle adjustment, and the like, however, the lens clamping module 1 of the present invention is not limited by this example.

In addition, as shown in FIG. 1 and FIG. 2, the chart display module 2 includes a chart frame structure 20, a first chart display element 21 disposed on the chart frame structure 20, and a plurality of stages disposed on the chart frame structure 20. The second graph displays the elements 22, and each of the second graph display elements 22 is tilted by a first predetermined angle θ1 relative to the first graph display element 21. For example, the first chart display element 21 and The plurality of second graph display elements 22 are all backlight maps that are replaceable, thereby increasing the convenience of the user in performing lens focusing. Additionally, the chart frame structure 20 can include a first chart frame 201 and a plurality of second chart frames 202 that are fixedly disposed on the first chart frame 201, respectively. However, the chart frame structure 20, the first chart display element 21, and the second chart display element 22 of the present invention are not limited by this example.

Furthermore, as shown in FIG. 1 to FIG. 3, the telephoto lens module 3 includes a lens frame structure 30, a first telephoto lens 31 (that is, a first telephoto lens) disposed on the lens frame structure 30, and a setting. A plurality of second telephoto lenses 32 (i.e., second telephoto lenses) on the lens frame structure 30, and each of the second telephoto lenses 32 is inclined by a second predetermined angle θ2 with respect to the first telephoto lens 31. In addition, the first telephoto lens 31 is disposed between the at least one to-be-measured lens W and the first graph display element 21, and each of the second telephoto lenses 32 is disposed on at least one of the to-be-measured lenses W and the corresponding second chart. Between display elements 22. For example, as shown in FIG. 3, the lens frame structure 30 includes a first lens frame 301 and a plurality of second lens frames 302 circumferentially disposed on the first lens frame 301. In addition, the first telephoto lens 31 may be positioned on the first lens frame 301 of the lens frame structure 30 via a first through hole 3010 of the first lens frame 301, and each of the second telephoto lenses 32 may be positioned on the second lens frame 302 of the lens frame structure 30 via a second through hole 3020 that passes through the corresponding second lens frame 302. However, the lens frame structure 30 of the present invention is not limited by this example.

It is worth mentioning that, as shown in FIG. 1 , the first predetermined angle at which each second graph display element 22 is tilted relative to the first graph display element 21 is θ1, and each second telephoto lens 32 is opposite to the first The second predetermined angle at which the telephoto lens 31 is tilted is θ2, and the relationship between the first predetermined angle θ1 and the second predetermined angle θ2 conforms to the following relationship: θ1 + θ2 180 degree. That is to say, both the first predetermined angle θ1 and the second predetermined angle θ2 will substantially exhibit a complementary relationship of two angles.

Thereby, as shown in FIG. 1 and FIG. 2, the first graph display element 21 is presented. A first chart image sequentially passes through the first telephoto lens 31 and the at least one lens to be tested W to form a first corrected image beam L1 projected onto an image sensing element S. In addition, a second chart image presented by each of the second chart display elements 22 sequentially passes through the corresponding second telephoto lens 32 and at least one of the to-be-measured lenses W to form a projection in the same image sensing. A second corrected image beam L2 on element S. Therefore, the lens focusing device Z of the present invention can perform focusing of at least one to-be-measured lens W by using the first corrected image light beam L1 and the second corrected image light beam L2 captured by the image sensing element S.

It should be noted that, as shown in FIG. 1, the lens focusing device Z of the present invention can pass the use of the first telephoto lens 31 to shorten the distance between the first chart display element 21 and the at least one lens to be tested W (or Optical path distance), and the lens focusing device Z of the present invention can pass the use of the second telephoto lens 32 to shorten the distance (or optical path distance) between the second chart display element 22 and the at least one lens to be tested W, thereby In order to effectively reduce the overall height of the lens focusing device Z. That is, the present invention uses the first telephoto lens 31 and the plurality of second telephoto lenses 32 to reduce the optical path between the graphic display module 2 and the at least one lens to be tested W, thereby effectively reducing The overall height of the lens focusing device Z reaches the creation of the miniaturized lens focusing device Z. Therefore, the present invention can utilize the creation of the miniaturized lens focusing device Z to achieve the finished product of at least one to-be-measured lens W at infinity. It should be noted that since the lens focusing device Z of the present invention can provide a wide field of view (FOV), at least one lens to be tested W tested by the lens focusing device Z of the present invention can be achieved thereby. Image quality from full viewing angle.

Furthermore, as shown in FIG. 4 and FIG. 5, in another embodiment of the present invention, the chart display module 2 includes a chart frame structure 20, and a first chart display detachably disposed on the chart frame structure 20. Element 21 and a plurality of second chart display elements 22 detachably disposed on chart frame structure 20. Therefore, the first graph display element 21 and the plurality of second graph display elements 22 are all replaceable backlight charts, thereby increasing the convenience of the user in performing lens focusing. Worth It is noted that the first chart display element 21 and the plurality of second chart display elements 22 can be replaced at the same time.

Furthermore, as shown in FIG. 4, FIG. 5 and FIG. 6, the chart frame structure 20 includes a first chart frame 201 and a plurality of second charts respectively fixedly or adjustably disposed on the first chart frame 201. Frame 202. It should be noted that FIG. 1 to FIG. 8 disclosed in the present invention are all described by taking "the plurality of second chart frames 202 are respectively fixedly disposed on the first chart frame 201" as an example, but this example is not used. To limit the invention. For example, a pivotal structure may be designed between the first chart frame 201 and the second chart frame 202, that is, the second chart frame 202 may be pivotally disposed on the first chart frame 201 through a pivot structure. In order to facilitate the user, the tilt angle of the second chart frame 202 relative to the first chart frame 201 can be adjusted according to different usage requirements.

As shown in FIG. 4, FIG. 5 and FIG. 6, the first chart 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 A second chart frame 202 includes a second frame 2021 fixedly (or adjustably) disposed on the first frame 2011 and a plurality of second holders 2022 disposed on the second frame 2021. Furthermore, the first frame body 2011 has a plurality of side 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. . Thereby, as shown in FIG. 4 or FIG. 5, the first chart display element 21 can be positioned by the plurality of first clamping members 2012 of the first chart frame 201 to be positioned on the first frame body 2011, and Each of the second chart display elements 22 can be positioned by the clamping of the plurality of second clamping members 2022 of the corresponding second chart frame 202 to be positioned on the corresponding second frame body 2021.

For example, as shown in FIG. 4 or FIG. 6, 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 chart display elements 22 can be positioned by the clamping of the plurality of second clamping members 2022 of the corresponding second chart frame 202 Corresponding at least two extension arms (2021A, 2021B) of the second frame body 2021. However, the second frame 2021 of the present invention is not limited by this example.

For example, as shown in FIG. 6 and FIG. 7 , the first clamping member 2012 of the first graphic frame 201 has a first fixing portion 2012A fixed on the first frame body 2011 and a first fixing portion 2012A extending from the first fixing portion 2012A. And a first limiting portion 2012B that limits the position of the first graph display element 21 and a first pressing portion 2012C that is connected to the first limiting portion 2012B and that presses against the first graph display element 21. 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. 6 and FIG. 8 , the second clamping member 2022 of the second graphic 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. And 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 presses against the second graph display element 22. 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.

Referring to FIG. 9, a plurality of second chart frames 202 of the chart frame structure 20 may be pivotally arranged to be disposed on the first chart frame 201. Therefore, as shown in the "rotation adjustment arrow" of FIG. 9, each of the second chart display elements 22 is adjusted when each of the second frames 2021 is adjusted with respect to a predetermined adjustable angle α inclined by the first frame 2011. A first predetermined angle θ1 inclined with respect to the first graph display element 21 is also adjusted. That is to say, according to different usage requirements, a first predetermined angle θ1 of the second graph display element 22 inclined relative to the first graph display element 21 may be inclined according to the second frame body 2121 relative to the first frame body 2011. It is determined by a predetermined angle α. It should be noted that, as shown in the "elevation adjustment arrow" of FIG. 9, since the chart frame structure 20 can also be adjusted for lifting, the first The graph display element 21 and the plurality of second graph display elements 22 can be adjusted up and down in accordance with the elevation of the chart frame structure 20.

In summary, the lens focusing device Z and the telephoto lens module 3 thereof are provided by the embodiment of the present invention, and the first telephoto lens 31 can be disposed on at least one lens to be tested. a design between W and the first graph display element 21 and "each second telephoto lens 32 is disposed between at least one of the to-be-measured lens W and the corresponding second graph display element 22" to focus the lens The device Z can be used by the cooperation of the first telephoto lens 31 and the plurality of second telephoto lenses 32 to shorten the distance (or optical path distance) between the first graph display element 21 and the at least one lens to be tested W, and shorten The second graph shows the distance (or optical path distance) between the element 22 and at least one of the lenses to be tested W, whereby the overall height of the lens focusing device Z is effectively reduced. That is, the present invention uses the first telephoto lens 31 and the plurality of second telephoto lenses 32 to reduce the optical path between the graphic display module 2 and the at least one lens to be tested W, thereby effectively reducing The overall height of the lens focusing device Z reaches the creation of the miniaturized lens focusing device Z. Therefore, the present invention can utilize the creation of the miniaturized lens focusing device Z to achieve the finished product of at least one to-be-measured lens W at infinity. It should be noted that since the lens focusing device Z of the present invention can provide a wide field of view (FOV), at least one lens to be tested W tested by the lens focusing device Z of the present invention can be achieved thereby. Image quality from full viewing angle.

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

Z‧‧‧ lens focusing equipment

1‧‧‧Lens Clamping Module

2‧‧‧Chart display module

20‧‧‧Chart frame structure

201‧‧‧ first chart frame

202‧‧‧Second chart framework

21‧‧‧The first chart display component

22‧‧‧Second chart display component

3‧‧‧Telephoto lens module

31‧‧‧First telephoto lens

32‧‧‧Second telephoto lens

W‧‧‧Densable lens

S‧‧‧ image sensing components

L1‧‧‧First corrected image beam

L2‧‧‧Second corrected image beam

Θ1‧‧‧first predetermined angle

Θ2‧‧‧second predetermined angle

Claims (13)

A lens focusing device includes: a lens clamping module, the lens clamping module clamping at least one lens to be tested; a graphic display module, the graphic display module comprising a graphic frame structure, a a first chart display element disposed on the chart frame structure and a plurality of second chart display elements disposed on the chart frame structure, wherein each of the second chart display elements is relative to the first chart The display element is tilted by a first predetermined angle; and a telephoto lens module comprising a lens frame structure, a first telephoto lens disposed on the lens frame structure, and a plurality of second telephoto lenses on the lens frame structure, wherein each of the second telephoto lenses is inclined by a second predetermined angle with respect to the first telephoto lens; wherein the first telephoto lens setting Between at least one of the to-be-tested lens and the first chart display element, and each of the second telephoto lenses is disposed on at least one of the to-be-tested lenses and the corresponding second chart display Between member; wherein said first predetermined angle is theta] 1, the second predetermined angle of theta] 2, and the first predetermined angular relationship with said second predetermined angle satisfy the following relation: θ1 + θ2 180 degree. The lens focusing device of claim 1, wherein the chart frame structure comprises a first chart frame and a plurality of second chart frames fixedly or adjustably disposed on the first chart frame. The lens focusing device of claim 2, wherein the first chart frame comprises a first frame and a plurality of first clamping members disposed on the first frame, and each of the The second chart 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 lens focusing device of claim 3, wherein the first graphic display element is clamped by the plurality of the first clamping members of the first graphic frame to be positioned at the first frame Body, and each of the second chart display elements is clamped by a plurality of the second clamping members of the corresponding second chart frame to be positioned on the corresponding second frame body . 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 that the component is clamped by a plurality of the second clamping members of the corresponding second chart frame to be positioned at at least two of the extending arms of the corresponding second frame between. 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 that is coupled to the first limiting portion and that presses the first graphic display element, and the second clamping portion The holding 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 connection And the second limiting portion is pressed against the second pressing portion of the second graph display element. The lens focusing device of claim 1, wherein the lens frame structure comprises a first lens frame and a plurality of second lens frames circumferentially disposed on the first lens frame, the first length The focal lens passes through a first through hole of the first lens frame, and each of the second telephoto lenses passes through a second through hole of the corresponding second lens frame. The lens focusing device of claim 1, wherein a first chart image presented by the first chart display element sequentially passes through the first telephoto lens and at least one of the to-be-tested lenses to A first corrected image beam projected onto an image sensing element is formed. The lens focusing device of claim 1, wherein each of the second charts A second chart image presented by the display element sequentially passes through the corresponding second telephoto lens and at least one of the to-be-measured lenses to form a second corrected image beam projected on an image sensing element. . A lens focusing device includes: a lens clamping module, the lens clamping module clamping at least one lens to be tested; a graphic display module, the graphic display module comprising a first graphic display component And a plurality of second graph display elements, wherein each of the second graph display elements is tilted by a first predetermined angle with respect to the first graph display element; and a telephoto lens module, the telephoto lens mode The group includes a first telephoto lens and a plurality of second telephoto lenses, wherein each of the second telephoto lenses is tilted by a second predetermined angle with respect to the first telephoto lens; wherein the first a telephoto lens disposed between at least one of the to-be-tested lens and the first chart display element, and each of the second telephoto lenses is disposed on at least one of the to-be-tested lens and the corresponding second The chart displays between the elements; wherein the first predetermined angle is θ1, the second predetermined angle is θ2, and the relationship between the first predetermined angle and the second predetermined angle conforms to the following relationship: θ1+θ2 180 degree. The lens focusing device of claim 10, wherein the telephoto lens module further comprises a lens frame structure, the lens frame structure including a first lens frame and a circumferentially disposed first lens a plurality of second lens frames on the frame, the first telephoto lens passing through a first through hole of the first lens frame to be positioned on the first lens frame, and each of the second lengths The focal lens passes through a corresponding second through hole of the second lens frame to be positioned on the second lens frame. A telephoto lens module comprising: a lens frame structure; a first telephoto lens, wherein the first telephoto lens is disposed on the lens frame structure And corresponding to a first graph display element; and a plurality of second telephoto lenses, wherein the plurality of second telephoto lenses are disposed on the lens frame structure and respectively correspond to a plurality of second graph display elements, wherein Each of the second telephoto lenses is inclined to the first telephoto lens. The telephoto lens module of claim 12, wherein the lens frame structure comprises a first lens frame and a plurality of second lens frames circumferentially disposed on the first lens frame, the first The telephoto lens passes through a first through hole of the first lens frame, and each of the second telephoto lenses passes through a second through hole of the corresponding second lens frame.