CN212060732U - Viewfinding and magnifying device - Google Patents
Viewfinding and magnifying device Download PDFInfo
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- CN212060732U CN212060732U CN202020470536.0U CN202020470536U CN212060732U CN 212060732 U CN212060732 U CN 212060732U CN 202020470536 U CN202020470536 U CN 202020470536U CN 212060732 U CN212060732 U CN 212060732U
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Abstract
The utility model discloses a view finding amplification device, include: a first lens group including a first lens; the second lens group comprises a second lens and a gland; the first cylinder body, the first lens group and the second lens group are respectively arranged at two ends of the first cylinder body; the second cylinder body is arranged at one end of a second lens, the second lens is arranged between the first cylinder body and the second cylinder body, and the first lens and the second lens are convex lenses; the flocking layer covers the inner wall of the first cylinder body, the gland covers the inner wall of the second cylinder body, and the first cylinder body and the second cylinder body are made of carbon fibers. Has the advantages that: the first lens and the second lens can realize a view finding and magnifying function. The first cylinder body and the second cylinder body are made of carbon fiber materials, so that the viewfinder magnifying device is light in weight and convenient to carry. The flocking layer can absorb stray light in the first cylinder body, and the imaging effect can be effectively improved. The gland can shield the inner wall of the second cylinder body, and the imaging effect can be further improved. The utility model relates to a camera and camera annex.
Description
Technical Field
The present invention relates to camera and video camera accessories, and more particularly to a viewfinder magnification device.
Background
The view finding amplifier can be used for a large-format camera, the observation effect of a view finding screen can be improved, the focusing condition of the camera is easy to observe, and focusing confirmation is facilitated.
The viewfinder amplifier generally includes a first cylinder, a first lens and a second lens, which are respectively disposed at two ends of the first cylinder. The first cylinder can play a role in shading light so as to reduce interference of stray light between the first lens and the second lens.
In the prior art, in order to improve the structural strength of the view finding amplifier, the barrel body can be made of alloy materials, and the technical defects are as follows: the weight of the cylinder body is large, and the portability is poor.
In the prior art, in order to lighten the weight of a viewfinder amplifier, the cylinder body can be made of plastic materials, and the technical defects are as follows: the inner wall of the cylinder body made of plastic material can not restrain stray light generally, so that the imaging effect of the view finding amplifier is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a structure light, the effectual device that magnifies that finds a view of formation of image.
The technical scheme adopted for solving the technical problems is as follows:
a viewfinder magnification device comprising:
a first lens group including a first lens;
the second lens group comprises a second lens and a gland;
the first cylinder body, the first lens group and the second lens group are respectively arranged at two ends of the first cylinder body;
the second cylinder body is arranged at one end of a second lens, the second lens is arranged between the first cylinder body and the second cylinder body, and the first lens and the second lens are convex lenses;
the flocking layer covers the inner wall of the first cylinder body, the gland covers the inner wall of the second cylinder body, and the first cylinder body and the second cylinder body are made of carbon fibers.
The viewfinder magnifying device at least has the following beneficial effects:
the first lens and the second lens are convex lenses, and the functions of finding a view and magnifying can be realized. The first cylinder body and the second cylinder body are made of carbon fiber materials, so that the viewfinder magnifying device is light in weight and convenient to carry. The flocking layer can absorb stray light in the first cylinder body, and the imaging effect can be effectively improved. The gland can shield the inner wall of the second cylinder body, and the imaging effect can be further improved.
The present invention provides a possible embodiment, wherein the first lens group further comprises a first lens base and a pressing ring, the pressing ring can be embedded into the first lens base, and the first lens can be pressed between the first lens base and the pressing ring. The first lens seat and the pressing ring can provide reliable positioning and fastening functions for the first lens.
In a possible embodiment of the present invention, an end cap is further disposed outside the first lens group, and the end cap can cover the first lens. The end cap can cover the first lens to provide protection for the first lens.
The utility model discloses an in a possible embodiment, the second mirror group still includes the second microscope base, and the one end accessible screw of gland is screwed on the second microscope base, and the second lens is compressed tightly between gland and second microscope base. The gland and the second lens base can provide positioning and fastening functions for the second lens.
In a possible embodiment of the present invention, a hanging ring is further disposed on the second lens holder, and the hanging ring protrudes between the first barrel and the second barrel. The hanging ring can make the viewfinder magnifying device be carried by hanging rope or shoulder belt, and can raise portability.
In a possible embodiment of the present invention, the second lens group further includes a third lens, the third lens is a concave lens, and the third lens overlaps the second lens to form a lens group with a convex lens function. The third lens can be stacked on the second lens, and the optical parameters of the second lens group can be adjusted by selecting different types of third lenses.
In one possible embodiment of the present invention, the second lens is low dispersion optical glass, and the third lens is high refractive index optical glass. The second lens and the third lens are combined with each other, so that chromatic aberration and distortion of the second lens group can be eliminated on the premise of ensuring high magnification, and the imaging quality is improved.
In one possible embodiment of the present invention, the first lens is a condensing lens having a plane surface and a curved surface. The shape of the first lens can enhance the brightness of a visual field, eliminate distortion and enable the imaging effect to be clearer and brighter.
In a possible embodiment of the present invention, the total magnification of the first lens group and the second lens group is 5 times and the diameter of the aperture of the field of view is 35 mm.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 3 is an exploded view of an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of an exploded state of an embodiment of the present invention;
fig. 5 is a schematic view illustrating an arrangement of a first lens, a second lens and a third lens according to an embodiment of the present invention;
reference numerals:
the lens comprises a first lens group 1, a first lens 2, a first lens base 3, a pressing ring 4, an end cover 5, a second lens group 6, a second lens 7, a third lens 8, a second lens base 9, a pressing cover 10, a hanging ring 11, a first barrel 12, a second barrel 13 and a flocking layer 14.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 5, a finder magnification device includes:
a first lens group 1, wherein the first lens group 1 comprises a first lens 2;
a second lens group 6, wherein the second lens group 6 comprises a second lens 7 and a gland 10;
the first barrel 12, the first lens group 1 and the second lens group 6 are respectively arranged at two ends of the first barrel 12;
the second cylinder 13, the second cylinder 13 is set up in one end of the second lens 7, the second lens 7 is set up between first cylinder 12 and second cylinder 13, first lens 2 and second lens 7 are the convex lens;
the flocking layer 14, the flocking layer 14 covers the inner wall of first barrel 12, and the gland 10 covers the inner wall of second barrel 13, and first barrel 12 and second barrel 13 are carbon fiber material.
The viewfinder magnifying device at least has the following beneficial effects:
the first lens 2 and the second lens 7 are convex lenses, and can realize the functions of finding a view and magnifying. The first barrel 12 and the second barrel 13 are made of carbon fiber, so that the viewfinder magnifier is light in weight and convenient to carry. The flocking layer 14 can absorb stray light in the first barrel 12, and the imaging effect can be effectively improved. The gland 10 can shield the inner wall of the second barrel 13, and the imaging effect can be further improved.
Regarding the first lens group 1, the first lens group 1 is fixed at one end of the first barrel 12. The connection means between the first lens group 1 and the first barrel 12 includes but is not limited to adhesion.
The first lens 2 is a convex lens having a flat surface on one surface, and the first lens 2 can be brought into close contact with a display screen of a camera or a video camera to realize a field lens function.
Regarding the second lens group 6, the second lens group 6 is fixed at one end of the first barrel 12. The connection between second lens group 6 and first barrel 12 includes but is not limited to adhesion.
Regarding the second lens 7, the second lens 7 is a convex lens, and can further enlarge the image, and is combined with the first lens 2 to achieve the framing and enlarging effect. The second lens 7 can be directly observed by a user, and can realize an eyepiece function.
Regarding the first barrel 12, the first barrel 12 is made of carbon fiber, and has the advantages of good structural strength and light weight, so that the viewfinder magnifying device has a reliable and light structure. The first barrel 12 is opaque to light, so as to prevent external light from interfering between the first lens 2 and the second lens 7.
Regarding the second barrel 13, the second barrel 13 is made of carbon fiber, and has the advantages of good structural strength and light weight, so that the viewfinder and magnifier is reliable and light in structure. The second barrel 13 is opaque to light and prevents external light from interfering between the user's eyes and the second lens 7. The first barrel 12 and the second barrel 13 are made of carbon fiber, and the appearance of the cylinder can be more decorative by attaching carbon fiber cloth and the like.
With respect to the flocking layer 14, the flocking layer 14 can be selected from, but not limited to, black flocking paper. Since the first barrel 12 is made of carbon fiber, the surface of the carbon fiber is usually uneven, which may cause complex reflection on the inner wall of the first barrel 12, and thus the imaging effect may be reduced. The flocking layer 14 can absorb stray light, so as to prevent the stray light from interfering the imaging effect between the first lens 2 and the second lens 7. In order to prevent the falling off of the flocking and the influence on the viewing and observation of the user in the using process, the flocking coating material can be selected from but not limited to paint or glue, and the flocking on the surface of the flocking layer 14 material can be stably treated by coating the paint or glue.
With respect to the gland 10, the gland 10 may be selected from, but not limited to, black dull anodized aluminum alloy. Since the second cylinder 13 is made of carbon fiber, the surface of the carbon fiber is usually uneven smooth surface, which may cause complex reflection on the inner wall of the second cylinder 13 and interfere with the observation of the user. And after the inner wall of the gland 10 covers the inner wall of the second cylinder body 13, the inner wall of the second cylinder body 13 can be beautified, stray light is effectively eliminated, and the use experience of a user is favorably improved.
In this embodiment, the first lens group 1 further includes a first lens base 3 and a pressing ring 4, the pressing ring 4 can be embedded in the first lens base 3, and the first lens 2 can be pressed between the first lens base 3 and the pressing ring 4. The first lens holder 3 and the clamping ring 4 can provide a reliable positioning and fastening function for the first lens 2.
With respect to the first mirror mount 3, the first mirror mount 3 is annular. The connection between the first lens holder 3 and the first barrel 12 can be selected from, but not limited to, adhesion.
As for the pressing ring 4, the pressing ring 4 is annular. The clamping ring 4 can be inserted into the inside of the first lens holder 3. The pressing ring 4 and the first lens holder 3 can press the edge of the first lens 2 from both sides of the first lens 2, respectively, thereby providing a positioning and fastening function for the first lens 2.
In this embodiment, an end cap 5 is further disposed outside the first lens group 1, and the end cap 5 can cover the first lens 2. The end cap 5 may cover the first lens 2 to provide protection for the first lens 2.
With respect to the end cap 5, the end cap 5 may be made of, but not limited to, aluminum alloy. The aluminum alloy material makes the end cover 5 stable in structure and light in weight. The inner side of the end cover 5 is sprayed with rubber paint, so that the disassembly is convenient, and the end cover 5 is elastically buckled at the edge of the first lens base 3, so that the first lens 2 can be covered, and the first lens 2 is prevented from being accidentally scratched.
In this embodiment, the second lens group 6 further includes a second lens base 9, one end of the pressing cover 10 can be screwed on the second lens base 9 through a screw, and the second lens 7 is pressed between the pressing cover 10 and the second lens base 9. The gland 10 and the second lens holder 9 can provide a location for the second lens 7.
With respect to the second mirror mount 9, the second mirror mount 9 is annular. One end of the second lens holder 9 can be embedded in the first barrel 12. The second lens holder 9 and the first barrel 12 can be connected by, but not limited to, adhesion.
The gland 10 is cylindrical, and the gland 10 is cylindrical. One end of the gland 10 is provided with external threads. The inner side of the second lens holder 9 is provided with an internal thread. The gland 10 can compress the second lens 7 by screw-fitting with the second lens holder 9, providing a reliable positioning and fastening function for the second lens 7.
In this embodiment, the second lens holder 9 is further provided with a hanging ring 11, and the hanging ring 11 protrudes between the first barrel 12 and the second barrel 13. The hanging ring 11 allows the finder unit to be carried by a hanging rope or a shoulder strap, thereby improving portability.
Regarding the hanging ring 11, the hanging ring 11 and the second lens holder 9 can be made of, but not limited to, aluminum alloy. In the present embodiment, the suspension loop 11 is integrally formed with the second lens holder 9.
In this embodiment, the second lens group 6 further includes a third lens 8, the third lens 8 is a concave lens, and the third lens 8 and the second lens 7 are overlapped to form a lens group with a convex lens function. The third lens 8 can be stacked on the second lens 7, and the optical parameters of the second lens group 6 can be adjusted by selecting a different type of the third lens 8.
With respect to the third mirror 8, the third mirror 8 is a concave lens having an edge thickness greater than a center thickness. One face of the third lens 8 is curved and can conform to the surface of the second lens 7.
In this embodiment, the second lens 7 is low dispersion optical glass, and the third lens 8 is high refractive index optical glass. The second lens 7 and the third lens 8 are combined with each other, so that chromatic aberration and distortion of the second lens group 6 can be eliminated on the premise of ensuring high magnification, and the imaging quality can be improved.
With respect to the second mirror plate 7, one surface of the second mirror plate 7 is a flat surface and the other surface is a curved surface, thereby forming a convex lens having an edge thickness smaller than a center thickness.
In the present embodiment, the first lens 2 is a condenser lens having a flat surface on one side and a curved surface on the other side. The shape of the first lens 2 can enhance the brightness of a visual field, eliminate distortion and enable the imaging effect to be clearer and brighter.
With respect to the first lens 2, the second lens 7 and the third lens 8, their shapes and arrangement are as shown in fig. 5.
In the present embodiment, the total magnification of the first lens group 1 and the second lens group 6 is 5 times and the diameter of the aperture of the field of view is 35 mm.
Claims (9)
1. A viewfinder magnification device, comprising:
a first lens group comprising a first lens;
the second lens group comprises a second lens and a gland;
the first cylinder body, the first lens group and the second lens group are respectively arranged at two ends of the first cylinder body;
the second cylinder body is arranged at one end of the second lens, the second lens is arranged between the first cylinder body and the second cylinder body, and the first lens and the second lens are convex lenses;
the flocking layer covers the inner wall of the first cylinder body, the gland covers the inner wall of the second cylinder body, and the first cylinder body and the second cylinder body are made of carbon fiber.
2. The finder magnification device as claimed in claim 1, characterized in that: the first lens group further comprises a first lens base and a pressing ring, the pressing ring can be embedded into the first lens base, and the first lens can be pressed between the first lens base and the pressing ring.
3. The finder magnification device as claimed in claim 2, characterized in that: an end cover is further arranged outside the first mirror group, and the end cover can cover the first mirror.
4. The finder magnification device as claimed in claim 1, characterized in that: the second lens group further comprises a second lens base, one end of the gland can be screwed on the second lens base through threads, and the second lens is compressed between the gland and the second lens base.
5. The finder magnification device as claimed in claim 4, characterized in that: the second lens base is further provided with a hanging ring, and the hanging ring protrudes between the first cylinder body and the second cylinder body.
6. The finder magnification device as claimed in any one of claims 1 to 5, characterized in that: the second lens group further comprises a third lens, the third lens is a concave lens, and the third lens and the second lens are overlapped to form the lens group with the convex lens function.
7. The finder magnification device as claimed in claim 6, characterized in that: the second lens is low-dispersion optical glass, and the third lens is high-refractive-index optical glass.
8. The finder magnification device as claimed in claim 7, characterized in that: the first lens is a condensing lens with one plane surface and the other curved surface.
9. The finder magnification device as claimed in claim 8, characterized in that: the total magnification of the first lens group and the second lens group is 5 times, and the diameter of the aperture of the field of view is 35 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470536.0U CN212060732U (en) | 2020-04-02 | 2020-04-02 | Viewfinding and magnifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470536.0U CN212060732U (en) | 2020-04-02 | 2020-04-02 | Viewfinding and magnifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212060732U true CN212060732U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020470536.0U Active CN212060732U (en) | 2020-04-02 | 2020-04-02 | Viewfinding and magnifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212060732U (en) |
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2020
- 2020-04-02 CN CN202020470536.0U patent/CN212060732U/en active Active
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