CN112799205B - Quadruple ratio zoom eyepiece - Google Patents
Quadruple ratio zoom eyepiece Download PDFInfo
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- CN112799205B CN112799205B CN201911097944.4A CN201911097944A CN112799205B CN 112799205 B CN112799205 B CN 112799205B CN 201911097944 A CN201911097944 A CN 201911097944A CN 112799205 B CN112799205 B CN 112799205B
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- eyepiece
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention provides a quadruple ratio zoom eyepiece which is characterized in that: the middle section of the outer portion of the guide sleeve is provided with a multiplying power adjusting ring, the right side of the outer portion of the guide sleeve is provided with a fifth eyepiece chamber, a spiral sleeve is arranged inside the guide sleeve, the multiplying power adjusting ring penetrates through a first guide groove fixing spiral sleeve on the guide sleeve through a limiting guide nail, the right side of the outer portion of the first eyepiece chamber is provided with a zooming guide nail I, the right side of the outer portion of the second eyepiece chamber is provided with a zooming guide nail II, the right side of the outer portion of the third eyepiece chamber is provided with a zooming guide nail III, the inner portion of the first eyepiece chamber is provided with an eyepiece cemented lens I, the inner portion of the second eyepiece chamber is respectively provided with an eyepiece third lens and an eyepiece fourth lens from left to right, the inner portion of the third eyepiece chamber is provided with an eyepiece fifth lens, the inner portion of the fifth eyepiece cemented lens II is provided with an eyepiece cemented lens II, three spiral grooves are formed in the spiral sleeve, a group of lenses are arranged in a matched mode in each spiral groove, and under the adjustment of the multiplying power adjusting ring, the purpose of zooming of achieving three groups of linkage is achieved.
Description
Technical Field
The invention relates to the technical field of optical production, in particular to a quadruple ratio zoom eyepiece.
Background
The zoom system is an optical system in which the focal length can be continuously changed while the image plane is kept stable, and the image quality is kept good during zooming. The zoom optical system can realize continuous detection of a distance target, is widely applied to many fields of national and national defense industries, is difficult to select a proper optical system to meet the requirement in the market due to the requirements of optical parameters, imaging quality and automatic zoom control, and needs to be specially designed, and common zoom lenses in the market have small zoom ratio and small visual field, and are usually 2-fold and 3-fold common because of the limitations of the imaging quality, the processing technology, the processing conditions and the like.
Disclosure of Invention
The invention aims to provide a quadruple ratio zoom eyepiece.A spiral sleeve is provided with three spiral grooves, each spiral groove is provided with a group of lenses in a matching way, and under the adjustment of a multiplying power adjusting ring, three groups of linkage are realized so as to achieve the aim of quadruple ratio zoom.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a quadruple ratio zoom eyepiece, includes multiplying power adjustable ring, uide bushing, the spiral shell, its characterized in that: the left part and the right part of the guide sleeve are cylinders with different diameters respectively, the front side of the guide sleeve is provided with a second guide groove and a third guide groove respectively, the upper section of the left part of the guide sleeve is provided with a first guide groove, the middle section of the outside of the guide sleeve is provided with a multiplying power adjusting ring, the right side of the outside of the guide sleeve is provided with a fifth eyepiece chamber, the inside of the guide sleeve is provided with a screw sleeve, the front side of the screw sleeve is provided with a first exhaust groove and a second exhaust groove, the screw sleeve is sequentially provided with a first slide rail, a second slide rail and a third slide rail from left to right, the multiplying power adjusting ring penetrates through the first guide groove fixed screw sleeve on the guide sleeve through a limiting guide pin, the screw sleeve synchronously rotates with the multiplying power adjusting ring, the right side of the outside of the first eyepiece chamber is provided with a zoom guide pin I, the zoom guide pin I penetrates through the third slide rail and is matched with the third guide groove, the right side of the outside of the second eyepiece chamber is provided with a zoom guide pin II, the zoom guide pin penetrates through the second slide rail and is matched with the second guide groove, the third eyepiece chamber is provided with a fourth eyepiece chamber, and a fourth eyepiece chamber is respectively provided with a fourth eyepiece lens from left to right cemented eyepiece chamber.
As a further improvement of the invention, the eyepiece cemented lens I is a lens cemented by different materials, the eyepiece cemented lens I is a biconcave lens, convex surfaces of a third lens and a fourth lens of the eyepiece face pupils, and a fifth lens of the eyepiece is a biconvex lens.
As a further improvement of the invention, the central axis of the first guide groove is vertical to the second guide groove, and the second guide groove and the third guide groove are on the same horizontal plane.
As a further improvement of the invention, an eyepiece sealing ring is arranged at the contact position between the left side of the fifth eyepiece chamber and the magnification adjusting ring, a fifth eyepiece pressing ring is annularly arranged between the fifth eyepiece chamber and the eyepiece cemented lens II, an eyepiece sealing gasket is arranged at the position, close to the left side of the eyepiece cemented lens II, inside the fifth eyepiece chamber, an eyeshade screw sleeve is arranged outside the fifth eyepiece chamber, an eyeshade is arranged outside the eyeshade screw sleeve, a positioning O-shaped ring is arranged between the eyeshade and the eyeshade screw sleeve, and the eyeshade is matched with the eyeshade screw sleeve through an eyeshade screw guide nail.
As a further improvement of the present invention, a fourth eyepiece clamping ring is disposed between the third eyepiece chamber and the eyepiece fifth lens.
As a further improvement of the invention, a second ocular pressing ring is arranged on the left side of the indoor surface of the second ocular, and an ocular spacing ring is arranged on the indoor surface of the second ocular between the third ocular and the fourth ocular.
As a further improvement of the invention, a first ocular clamping ring is arranged on the left side of the inner part of the first ocular chamber.
As a further improvement of the invention, the outer surface of the left side of the multiplying power adjusting ring is provided with an index ring, and a variable multiplying ring sealing ring is arranged between the index ring and the multiplying power adjusting ring.
As a further improvement of the invention, the outer surface of the left side of the index ring is provided with a connecting ring, a connecting pressing ring and an index ring sealing ring are respectively arranged between the connecting ring and the index ring from outside to inside, and a fastening ring is arranged inside the left side of the connecting ring.
The beneficial effects of the invention are concentrated and expressed as follows:
1. by the design of three groups of five-piece type polar subtraction optical lenses, a four-time ratio zoom eyepiece is realized, and the adaptability of an astronomical telescope and a target observation lens is effectively improved;
2. the invention adopts two groups of cemented lenses to realize the correction of aberration;
3. according to the design of the positions of the three groups of spiral grooves, the condition that an image surface is always positioned between the compensation group and the zoom group is met, the image surface cannot penetrate through the lens, the processing difficulty of the lens is reduced, and if the image surface penetrates through the lens, bubbles, scratches, dust and the like in the lens are amplified, so that the imaging quality is reduced, and even the imaging cannot be achieved;
4. the three-group linkage design is realized on an eyepiece space structure and a smaller position through a compact structural design, and the focal length design of 8.6-34.4 is met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of a guide sleeve provided in the present invention;
FIG. 3 is a top view of a guide sleeve according to the present invention;
FIG. 4 is a structural view of a spiral casing according to the present invention;
FIG. 5 is an expanded view of the present invention with the screw insert disposed;
FIG. 6 is another schematic construction of the present invention;
figure 7 is an expanded view of an alternative construction of the screw shell of the present invention.
Detailed Description
The invention will be further elucidated with reference to the following figures, which are simplified schematic representations, which illustrate only the basic structure of the invention in a schematic way, and thus show only the constructions relevant to the invention.
Example 1:
as shown in fig. 1-5, a quadruple ratio zoom eyepiece comprises a magnification adjusting ring 15, a guide sleeve 17 and a spiral sleeve 16, and is characterized in that: the left part and the right part of the guide sleeve 17 are respectively cylinders with different diameters, the front of the guide sleeve 17 is respectively provided with a second guide groove 35 and a third guide groove 36, the upper section of the left part of the guide sleeve 17 is provided with a first guide groove 34, the middle section of the outside of the guide sleeve 17 is provided with a magnification adjusting ring 15, the right side of the outside of the guide sleeve 17 is provided with a fifth eyepiece chamber 9, the inside of the guide sleeve 17 is provided with a screw sleeve 16, the front of the screw sleeve 16 is provided with a first exhaust groove 37 and a second exhaust groove 38, the screw sleeve 16 is sequentially provided with a first slide rail 39, a second slide rail 40 and a third slide rail 41 from left to right, the magnification adjusting ring 15 penetrates through the first guide groove 34 on the guide sleeve 17 through a limiting guide nail 32 to fix the screw sleeve 16, the screw sleeve 16 and the magnification adjusting ring 15 synchronously rotate, the right side of the outside of the first eyepiece chamber 1 is provided with a zoom guide nail I29, the magnification guide nail I29 penetrates through the third slide rail 41 and forms a fit with the third guide groove 36, the invention adopts a three-group linkage mode to realize zoom of four times ratio on an ocular, effectively improve the use range of an astronomical telescope and a target viewing mirror, increase the adaptability of the astronomical telescope or the target viewing mirror and achieve the continuous change of 8.6-34.4 focal length, the invention adopts three groups of five-piece lenses to realize the product design with compact structure and low cost, and the horizontal displacements of the first ocular chamber 1, the second ocular chamber 3 and the third ocular chamber 6 are different in the zooming process to realize good transition and zooming effects.
As a further preferable scheme of the present invention, the eyepiece cemented lens i 20 is a lens cemented by different materials, the eyepiece cemented lens i 20 is a biconcave lens, convex surfaces of the eyepiece third lens 21 and the eyepiece fourth lens 27 face the pupil, and the eyepiece fifth lens 28 is a biconvex lens.
As a further preferable aspect of the present invention, the central axis of the first guide groove 34 is perpendicular to the second guide groove 25, the second guide groove 25 and the third guide groove 36 are on the same horizontal plane, and the first guide groove 34 and the second guide groove 36 on the same horizontal plane can satisfy the simplicity of processing and effectively shorten the process.
As a further preferable scheme of the present invention, an eyepiece sealing ring 23 is arranged at a contact position between the left side of the fifth eyepiece chamber 9 and the magnification adjusting ring 15, a fifth eyepiece pressing ring 10 is annularly arranged between the fifth eyepiece chamber 10 and the eyepiece cemented lens ii 33, an eyepiece sealing gasket 22 is arranged inside the fifth eyepiece chamber 9 and close to the left side of the eyepiece cemented lens ii 33, an eyeshade spiral sleeve 18 is arranged outside the fifth eyepiece chamber 9, an eyeshade 19 is arranged outside the eyeshade spiral sleeve 18, a positioning O-ring 26 is arranged between the eyeshade 19 and the eyeshade spiral sleeve 18, the eyeshade 19 is matched with the eyeshade spiral sleeve 18 through an eyeshade spiral guide nail 31, and the design of the rotary lifting eyeshade can perform good light blocking performance when the eyeshade is used, so as to meet the protection of the eyeshade.
As a further preferable embodiment of the present invention, a fourth eyepiece holding ring 8 is provided between the third eyepiece chamber 6 and the eyepiece fifth lens 28, and a holding ring structure having a certain elasticity is used to fix the lens well and prevent the lens from shaking.
As a further preferable scheme of the present invention, the left side of the inner surface of the second ocular chamber 3 is provided with a second ocular clamping ring 4, and the inner surface of the second ocular chamber 3 between the ocular third lens 21 and the ocular fourth lens 27 is provided with an ocular spacing ring 7.
As a further preferable embodiment of the present invention, a first eyepiece clamping ring 2 is disposed on the left side inside the first eyepiece chamber 1, and well fixes the eyepiece cemented lens i 20 inside the first eyepiece chamber 1.
As a further preferable scheme of the present invention, an index ring 14 is disposed on the outer surface of the left side of the magnification adjusting ring 15, a zoom ring sealing ring 24 is disposed between the index ring 14 and the magnification adjusting ring 15, and the design of the zoom ring sealing ring 24 can effectively increase the sealing performance and meet the requirement of eyepiece sealing.
As a further preferable scheme of the present invention, the outer surface of the left side of the indicator ring 14 is provided with a connecting ring 12, a connecting pressing ring 13 and an indicator ring sealing ring 25 are respectively arranged between the connecting ring 12 and the indicator ring 14 from outside to inside, and a fastening ring 11 is arranged inside the left side of the connecting ring 12.
Compared with a zoom eyepiece with two component linkage, the zoom group consisting of a second eyepiece chamber 3 and a third eyepiece chamber 6 is changed into two positive lens groups moving in different tracks, because the space between the two lens groups is very limited, and the mechanical structure design is difficult, the scheme is that after a lens is arranged in the second eyepiece chamber, a second eyepiece pressing ring 4 is adopted for fixing, then the second eyepiece chamber 3 is assembled on a zoom guide nail II 5 to form a complete moving component, after the third eyepiece chamber 6 is arranged in the lens, a fourth eyepiece pressing ring 8 is used for fixing to form a complete moving component, the third eyepiece chamber 6 needs to be matched with the second eyepiece chamber 3 and a spiral sleeve 16 simultaneously in the moving process, the matching length is increased, the stability of lens movement is kept, in order to avoid the interference between a zoom guide nail III 30 and the zoom guide nail II 5, a groove needs to be machined on the zoom guide nail II 5 to make the zoom guide nail 30 away, and thus the stable and non-interference between two groups of lenses in different tracks can be realized.
Example 2:
referring to fig. 6 and 7, a quadruple ratio zoom eyepiece comprises a magnification adjusting ring 15, a guide sleeve 17 and a spiral sleeve 16, and is characterized in that: the left part and the right part of the guide sleeve 17 are respectively cylinders with different diameters, the front of the guide sleeve 17 is respectively provided with a second guide groove 35 and a third guide groove 36, the upper section of the left part of the guide sleeve 17 is provided with a first guide groove 34, the middle section of the outside of the guide sleeve 17 is provided with a magnification adjusting ring 15, the right side of the outside of the guide sleeve 17 is provided with a fifth eyepiece chamber 9, the inside of the guide sleeve 17 is provided with a screw sleeve 16, the front of the screw sleeve 16 is provided with a first exhaust groove 37 and a second exhaust groove 38, the screw sleeve 16 is sequentially provided with a first slide rail 39, a second slide rail 40 and a third slide rail 41 from left to right, the magnification adjusting ring 15 penetrates through the first guide groove 34 on the guide sleeve 17 through a limiting guide nail 32 to fix the screw sleeve 16, the screw sleeve 16 and the magnification adjusting ring 15 synchronously rotate, the right side of the outside of the first eyepiece chamber 1 is provided with a zoom guide nail I29, the magnification guide nail I29 penetrates through the third slide rail 41 and forms a fit with the third guide groove 36, the invention adopts a three-group linkage mode to realize four-fold zoom on an ocular, effectively improve the application range of an astronomical telescope and a target observation mirror, increase the adaptability of the astronomical telescope or the target observation mirror, achieve the continuous change of a focal length of 8.6-34.4, and adopt three groups of five-piece lenses to form the zoom lens assembly, the invention realizes the product design with compact structure and low cost, and the horizontal displacement of the first ocular chamber 1, the second ocular chamber 3 and the third ocular chamber 6 is different in the zooming process, thereby realizing good transition and zooming effects.
When the eyepiece cemented lens iii 42 is used in the second eyepiece chamber 3, due to the change of the optical path diagram, the first slide rail 39 and the second slide rail 40 on the screw sleeve 16 can be adjusted, and after the relative movement distance is calculated by the size design of the first slide rail 39, the second slide rail 40 and the third slide rail 41 according to the ZEMAX software, the screw sleeve 16 is grooved to meet the relative movement position among the first eyepiece chamber 1, the second eyepiece chamber 3 and the third eyepiece chamber 6, in short, the movement matching mode of one of the eyepiece chambers needs to be simultaneously moved and matched with the other eyepiece chamber and the screw sleeve 16.
Claims (9)
1. The utility model provides a quadruple ratio zoom eyepiece, includes multiplying power adjustable ring, uide bushing, the spiral shell, its characterized in that: the left part and the right part of the guide sleeve are respectively cylinders with different diameters, the front side of the guide sleeve is respectively provided with a second guide groove and a third guide groove, the upper section of the left part of the guide sleeve is provided with a first guide groove, the middle section of the outside of the guide sleeve is provided with a multiplying power adjusting ring, the right side of the outside of the guide sleeve is provided with a fifth eyepiece chamber, the inside of the guide sleeve is provided with a screw sleeve, the front side of the screw sleeve is provided with a first exhaust groove and a second exhaust groove, the screw sleeve is sequentially provided with a first slide rail, a second slide rail and a third slide rail from left to right, the multiplying power adjusting ring penetrates through the first guide groove on the guide sleeve through a limiting guide pin to fix the screw sleeve, the screw sleeve and the multiplying power adjusting ring rotate synchronously, the right side of the outside of the first eyepiece chamber is provided with a zoom guide pin I, the zoom guide pin I penetrates through the third slide rail and is matched with a third guide groove, the right side of the outside of the second eyepiece chamber is provided with a zoom guide pin II, the zoom guide pin II penetrates through the second slide rail and is matched with the second guide groove, the right side of the outside of the third eyepiece chamber is provided with a zoom guide pin, and the zoom guide pin III;
the first eyepiece chamber interior is provided with eyepiece cemented lens I, and the second eyepiece chamber interior is provided with eyepiece third lens and eyepiece fourth lens or second eyepiece chamber interior from left to right respectively and is provided with eyepiece cemented lens III, and the third eyepiece chamber interior is provided with eyepiece fifth lens, and the fifth eyepiece chamber interior is provided with eyepiece cemented lens II.
2. The quadruple ratio zoom eyepiece of claim 1, wherein: eyepiece cemented lens I is the lens of different materials veneer, and eyepiece cemented lens I is biconcave type lens, and eyepiece cemented lens III is the lens of different materials veneer, and the III right sides of eyepiece cemented lens are convex lens, and the convex surface of eyepiece third lens, eyepiece fourth lens is towards the pupil, and eyepiece fifth lens is biconvex type lens.
3. The quadruple ratio zoom eyepiece of claim 1, wherein: the central axis of the first guide groove is vertical to the second guide groove, and the second guide groove and the third guide groove are on the same horizontal plane.
4. The quadruple ratio zoom eyepiece of claim 1, wherein: contact position is provided with the eyepiece sealing washer between fifth eyepiece room left side and the multiplying power adjustable ring, and the annular is provided with the fifth eyepiece clamping ring between fifth eyepiece room and eyepiece cemented lens II, and the indoor portion of fifth eyepiece is close to II left sides of eyepiece cemented lens and is provided with the sealed pad of eyepiece, and the outdoor portion of fifth eyepiece is provided with the eye-shade spiral shell, and eye-shade spiral shell outside is provided with the eye-shade, is provided with location O type circle between eye-shade and the eye-shade spiral shell, and the eye-shade passes through the eye-shade spiral and leads nail and eye-shade spiral shell formation cooperation.
5. The quadruple ratio zoom eyepiece of claim 1, wherein: and a fourth ocular pressing ring is arranged between the third ocular chamber and the fifth ocular lens.
6. The quadruple ratio zoom eyepiece of claim 1, wherein: the left side of the inner surface of the second ocular is provided with a second ocular pressing ring, and the inner surface of the second ocular chamber between the third ocular lens and the fourth ocular lens is provided with an ocular spacing ring.
7. The quadruple ratio zoom eyepiece of claim 1, wherein: and a first ocular pressing ring is arranged on the left side of the inner part of the first ocular chamber.
8. The quadruple ratio zoom eyepiece of claim 1, wherein: and an index ring is arranged on the outer surface of the left side of the multiplying power adjusting ring, and a variable-multiplying ring sealing ring is arranged between the index ring and the multiplying power adjusting ring.
9. The quadruple ratio zoom eyepiece of claim 8, wherein: the outer surface of the left side of the index ring is provided with a connecting ring, a connecting pressing ring and an index ring sealing ring are arranged between the connecting ring and the index ring from outside to inside respectively, and a fastening ring is arranged inside the left side of the connecting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097944.4A CN112799205B (en) | 2019-11-12 | 2019-11-12 | Quadruple ratio zoom eyepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097944.4A CN112799205B (en) | 2019-11-12 | 2019-11-12 | Quadruple ratio zoom eyepiece |
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| Publication Number | Publication Date |
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| CN112799205A CN112799205A (en) | 2021-05-14 |
| CN112799205B true CN112799205B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911097944.4A Active CN112799205B (en) | 2019-11-12 | 2019-11-12 | Quadruple ratio zoom eyepiece |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376825B (en) * | 2021-06-15 | 2022-11-11 | 河南平原光电有限公司 | Variable-focus ocular lens visual field monitoring optical system |
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| Publication number | Publication date |
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| CN112799205A (en) | 2021-05-14 |
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