CN203241613U - Inner focusing mechanism of Porro telescope - Google Patents
Inner focusing mechanism of Porro telescope Download PDFInfo
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- CN203241613U CN203241613U CN201320248183.XU CN201320248183U CN203241613U CN 203241613 U CN203241613 U CN 203241613U CN 201320248183 U CN201320248183 U CN 201320248183U CN 203241613 U CN203241613 U CN 203241613U
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- focusing
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Abstract
The utility model discloses an inner focusing mechanism of a Porro telescope. The focusing mechanism comprises an axial handwheel, a focusing guide rod, a focusing link, an adjusting tube, a focusing lens and a connecting shaft. The axial handwheel is externally sleeved on the connecting shaft at the connecting part between a telescope body and the focusing mechanism. The axial handwheel is connected with the inner focusing link so as to convert the rotation motion of the axial handwheel to the linear motion of the focusing guide rod. The left and the right parts of the other end of the focusing guide rod are respectively connected with the focusing link and the adjusting tube. The focusing lens is fixed inside the adjusting tube. The axial handwheel can be rotated to adjust focal distance of the focusing lens synchronously at the left and the right sides. The focusing link is vertically line-shaped. One end of the focusing link is vertically connected with the focusing guide rod, and the other end of the focusing link is connected with the adjusting tube. The focusing mechanism converts the rotation motion of the outer axial handwheel to changes of focal distance of the inner focusing lens. The focusing mechanism is characterized by being compact in structure, precise in focusing, high in reliability, little in energy consumption in a focusing process, and rapid and unbuffered in synchronous transmission.
Description
Technical field
The utility model belongs to the optical telescope technical field, is specifically related to a kind of telescope focus control, the built-in focus control of Borrow's type telescope that particularly relate to a kind of compact conformation, focus precisely, reliability is high.
Background technology
Common dioptrics telescope is different according to prism group form, can be divided into roof prism system (RoofPrism) (being also referred to as the benhain prism system) and Borrow's type prism system (PorroPrism) (being also referred to as general sieve type prism system).Because Borrow's type telescope prism group is simple in structure and be easier to make, also more cheap on the price, and than large with class ridge-roof type telescope luminous flux, contrast is high, therefore in support in the end telescope and be used widely.
The focusing mode that refracting telescope is commonly used has two kinds of outer focusing and interior focusings, allows eyepiece or object lens move with respect to object lens along optical axis direction, is called outer focusing.The advantage of outer focusing is simple, and picture element is better; But telescopical overall dimensions are larger, and sealing is also relatively poor.Interior focusing is to obtain clear image by one in the mobile objective lens or one group of lens.Its advantage is that physical dimension is little, and is easy to carry, and the focal plane of object lens all is constant to the scenery of any distance, is convenient to install graticule; Another advantage is to make instrument that preferably sealing be arranged, and is conducive to keep the cleaning of instrument internal.Because traditional interior focusing device generally adopts Curved sheet focusing connecting rod, can strengthen the degree of crook of focusing connecting rod when causing focusing, energy loss is large, and each parts transmission of focus control is asynchronous, and stickiness is obvious during focal length, has a strong impact on the accuracy of focusing; And Curved sheet focusing connecting rod bad mechanical property, larger collision and vibration all can make curved shape change the consistance when further affecting left and right sides optical axis Focussing.Therefore, if can develop a kind of compact conformation, focusing precisely, reliability high the built-in focus control of Borrow's type telescope, be the key that solves existing internal focusing telescope technical barrier.
The utility model content
The purpose of this utility model is to provide a kind of compact conformation, accurate, that reliability the is high Borrow's type telescope suspension type prismatic group of focusing.
The purpose of this utility model is to realize like this, comprise the axis handwheel, the focusing guide rod, the focusing connecting rod, adjustment barrel, focusing lens, coupling shaft, described axis handwheel is external and be socketed on the coupling shaft of telescope body junction, and be connected the rectilinear motion that rotatablely moving of axis handwheel is converted into the focusing guide rod with the built-in focusing guide rod of mirror body, sequentially be connected with adjustment barrel with the focusing connecting rod respectively about the described focusing guide rod other end, described focusing lens is fixed in the adjustment barrel, the focal length of rotating middle shaft handwheel energy left and right sides adjusted in concert focusing lens, described focusing connecting rod vertically is " one " character form structure, guide rod is vertical is connected with focusing for described focusing connecting rod one end, and the other end directly is connected with adjustment barrel.
The utility model has reached the purpose of compact conformation by Borrow's type telescope external focusing device is changed into built-in right angle focusing structure.The version of further optimizing the focusing connecting rod is " one " font, be subjected to force direction without bending, thereby strengthen the physical strength of focusing connecting rod, reduce the energy loss of focusing process, eliminate left and right focus adjusting mechanism and each parts because of the nonsynchronous problem of focusing rod deformation transmission, so that whole built-in focus control rotates fast nothing buffering synchronously, reached the accurately purpose of focusing.By the structure optimization of focusing connecting rod and focusing guide rod thereof, strengthened the physical strength of focus control; By connecting rod and the adjustment barrel plug-in type innovation without screw connecting mode of focusing, reduced left and right focusing connecting rod because of expand with heat and contract with cold, shock-produced deformation, vibration etc. be asynchronous on the separately impact of adjustment barrel unbalance stress, about further having improved, the synchronism of focus adjusting mechanism focusing, therefore, whole focus control reliability is higher.In sum, the utlity model has compact conformation, the characteristics accurate, that reliability is high of focusing.
Description of drawings
Fig. 1 is installation site of the present utility model schematic diagram;
Fig. 2 is structural representation of the present utility model.
Among the figure: 1-axis handwheel, 2-focusing guide rod, 3-focusing connecting rod, 4-adjustment barrel, 5-focusing lens, 6-coupling shaft, 7-moving-coil, 8-adjustable plate, 9-guide rod screw, 10-sealing swivel nut, 11-axis handwheel protecting cover, 12-mirror shell, 13-objective lens, 14-prism group, 15-eyepiece group.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but never in any form the utility model is limited, and any conversion based on the utility model training centre is done all falls into the utility model protection domain.
Such as Fig. 1, shown in 2, the utility model comprises axis handwheel 1, focusing guide rod 2, focusing connecting rod 3, adjustment barrel 4, focusing lens 5, coupling shaft 6, described axis handwheel 1 is external and be socketed on the coupling shaft 6 of telescope body junction, and be connected the rectilinear motion that rotatablely moving of axis handwheel 1 is converted into focusing guide rod 2 with the built-in focusing guide rod 2 of mirror body, respectively order and focusing connecting rod 3 are connected with adjustment barrel and are connected about described focusing guide rod 2 other ends, described focusing lens 5 is fixed in the adjustment barrel 4, the focal length of rotating middle shaft handwheel 1 energy left and right sides adjusted in concert focusing lens 5, described focusing connecting rod 3 vertically is " one " character form structure, described focusing connecting rod 3 one ends and focusing 2 vertical connections of guide rod, the other end directly is connected with adjustment barrel 4.
Described focusing connecting rod 3 horizontal V-shaped or " W " shape or wavy shaped configuration.
Described axis handwheel 1 is by coaxial being connected with also tapped adjustable plate 8 threaded engagement that are fixedly connected with focusing guide rod 2 with externally threaded moving-coil 7 of being fixedly installed, and realizing rotatablely moves is converted into rectilinear motion.
Described adjustable plate 8 is fixedly connected with focusing guide rod 2 by guide rod screw 9.
Described guide rod screw 9 has sealing swivel nut 10 with outer shaft sleeve.
Described focusing guide rod 2 is the tubular structures with the 1 coaxial setting of axis handwheel.
Described focusing connecting rod 3 one ends cooperate with the vertically disposed hole of adjustment barrel 4 peripheries to be realized being connected.Plug-in type connects without screw, and integral body is not yielding, and adjustment barrel 4 is stressed even.
Described axis handwheel 1, focusing guide rod 2, focusing connecting rod 3, adjustment barrel 4, coupling shaft 6, moving-coil 7, adjustable plate 8 and guide rod screw 9 are nonmagnetic substance.
Principle of work of the present utility model and the course of work:
Axis handwheel of the present utility model is around the coupling shaft rotation of left and right lens barrel junction, driving the focusing guide rod through the screw thread transmission moves along optical axis direction, thereby connect the focusing connecting rod that vertically is " one " character form structure by left and right vertical, drive synchronously left and right adjustment barrel and focusing lens fixed thereon mobile in the mirror shell along optical axis, reach the purpose of focusing.
When rotating middle shaft handwheel 1, drive the moving-coil 7 be fixedly connected with axis handwheel 7 inside by handwheel and rotate around coupling shaft; Because the screw thread of moving-coil 7 external diameters when moving-coil 7 rotation, drives the adjustable plate 8 of coaxial threaded cooperation along the forward and backward movement of optical axis; Forward and backward when mobile when adjustable plate 8, pass sealing swivel nut 10 by two and above guide rod screw 9 and drive the focusing guide rod 2 that is fixedly connected with and also do forward and backward movement along optical axis; Because focusing guide rod 2 is 90 ° of right angles with the connecting rod 3 of being connected and connects, when focusing guide rod 2 forward and backward when mobile, also just drive simultaneously focusing connecting rod 3 and adjustment barrel 4 and follow together forward and backward movement, namely focusing lens 5 is along the forward and backward movement of optical axis, thereby finishes the focusing purpose of package unit.
The characteristics of the characteristics that the utlity model has compact conformation, focus precisely, reliability are high.
Claims (7)
1. built-in focus control of Borrow's type telescope, comprise axis handwheel (1), focusing guide rod (2), focusing connecting rod (3), adjustment barrel (4), focusing lens (5), coupling shaft (6), described axis handwheel (1) is external and be socketed on the coupling shaft (6) of telescope body junction, and be connected the rectilinear motion that rotatablely moving of axis handwheel (1) is converted into focusing guide rod (2) with the built-in focusing guide rod (2) of mirror body, sequentially be connected 4 with focusing connecting rod (3) with adjustment barrel respectively about described focusing guide rod (2) other end) be connected, described focusing lens (5) is fixed in the adjustment barrel (4), the focal length of rotating middle shaft handwheel (1) energy left and right sides adjusted in concert focusing lens (5), it is characterized in that: described focusing connecting rod (3) vertically is " one " character form structure, described focusing connecting rod (3) one ends and focusing vertical connection of guide rod (2), the other end directly is connected with adjustment barrel (4).
2. the built-in focus control of Borrow's type telescope according to claim 1 is characterized in that: described focusing connecting rod (3) horizontal V-shaped or " W " shape or wavy shaped configuration.
3. the built-in focus control of Borrow's type telescope according to claim 1, it is characterized in that: described axis handwheel (1) is by coaxial being connected with also tapped adjustable plate (8) threaded engagement that is fixedly connected with focusing guide rod (2) with externally threaded moving-coil (7) of being fixedly installed, and realizing rotatablely moves is converted into rectilinear motion.
4. the built-in focus control of Borrow's type telescope according to claim 3 is characterized in that: described adjustable plate (8) is fixedly connected with focusing guide rod (2) by guide rod screw (9).
5. the built-in focus control of Borrow's type telescope according to claim 4, it is characterized in that: described guide rod screw (9) has sealing swivel nut (10) with outer shaft sleeve.
6. according to claim 1 to the built-in focus control of the described Borrow's type of 5 any one telescope, it is characterized in that: described focusing guide rod (2) is the tubular structure with the coaxial setting of axis handwheel (1).
7. according to claim 1 to the built-in focus control of the described Borrow's type of 5 any one telescope, it is characterized in that: described focusing connecting rod (3) one ends cooperate with the vertically disposed hole of adjustment barrel (4) periphery to be realized being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320248183.XU CN203241613U (en) | 2013-05-09 | 2013-05-09 | Inner focusing mechanism of Porro telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320248183.XU CN203241613U (en) | 2013-05-09 | 2013-05-09 | Inner focusing mechanism of Porro telescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241613U true CN203241613U (en) | 2013-10-16 |
Family
ID=49318894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320248183.XU Expired - Fee Related CN203241613U (en) | 2013-05-09 | 2013-05-09 | Inner focusing mechanism of Porro telescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203241613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205192A (en) * | 2017-05-31 | 2018-06-26 | 潜山县恒泰光电有限公司 | A kind of telescope focus adjusting mechanism |
-
2013
- 2013-05-09 CN CN201320248183.XU patent/CN203241613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205192A (en) * | 2017-05-31 | 2018-06-26 | 潜山县恒泰光电有限公司 | A kind of telescope focus adjusting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20160509 |