CN110631473A - Manual zoom lens with potentiometer electronic feedback device - Google Patents
Manual zoom lens with potentiometer electronic feedback device Download PDFInfo
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- CN110631473A CN110631473A CN201911031133.4A CN201911031133A CN110631473A CN 110631473 A CN110631473 A CN 110631473A CN 201911031133 A CN201911031133 A CN 201911031133A CN 110631473 A CN110631473 A CN 110631473A
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- potentiometer
- conductive
- zoom lens
- resistance
- shaft sleeve
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- 238000001514 detection method Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention provides a manual zoom lens with a potentiometer electronic feedback device, which is convenient to operate, good in reliability and high in working efficiency; comprises a manual zoom lens main body and an electronic feedback device, wherein the manual zoom lens main body comprises a lens adaptor, an upper lens barrel and a lower lens barrel, the lower lens barrel is rotatably connected with a shaft sleeve, the electronic feedback device comprises a potentiometer base, the shaft sleeve is divided into an inner shaft sleeve and an outer shaft sleeve, the potentiometer base is in a hollow circular ring shape, the inner shaft sleeve is relatively rotatably connected with the inner wall of the potentiometer base, the potentiometer comprises a potentiometer base, a resistance element, a conductive element, a resistance contact brush and a conductive contact, wherein the resistance element and the conductive element form a step structure with the inner wall of the potentiometer base, the resistance contact brush and the conductive contact are arranged on the outer wall of an inner shaft sleeve, the resistance contact brush is in contact with the resistance element, the conductive contact is in contact with the conductive element, the resistance contact brush and the conductive contact are connected through a conductive adapter, the resistance element is connected with a power supply, and a resistance monitor is connected between the resistance element and the conductive contact.
Description
Technical Field
The invention relates to the technical field of optical equipment, in particular to a manual zoom lens with a potentiometer electronic feedback device.
Background
In the prior art, when the manual zoom lens is applied to various measurement environments, most of them are to read the magnification value of the current position of the lens indicated on the graduated ring of the lens by manual visual observation, and then to manually input the read magnification value of the current position of the lens to the lower device (mostly a PC) connected with the lens, however, in this process, it is difficult to ensure that the information of whether the lens magnification ratio is adjusted to the accurate position of the current magnification ratio is accurately obtained, and the situation of reading the numerical value of the lens magnification ratio by mistake is easy to occur, and each time the lens is adjusted, the numerical value of the magnification of the current position of the lens needs to be read manually, then manually inputting the magnification value of the read current position of the lens to a lower device connected with the lens, therefore, the operation is complicated, the working efficiency of a manual confirmation mode is low, and errors are easy to occur during manual input; in addition, the zoom lens with magnification adjustment indication comprises a position detection signal transmitting and receiving device, a position detection signal reflecting device and the like, so as to realize the function of electronic information feedback, the position detection signal reflecting device is used as an electronic feedback device and reflects the detection signal from the position detection signal transmitting and receiving device back to the position detection signal transmitting and receiving device, the position detection signal reflecting device is fixedly arranged on the manual focusing lens body and synchronously rotates along with the manual focusing lens body, a light reflecting body for marking the position is arranged on the position detection signal reflecting device according to the Gray code coding mode, the light reflecting body is electrically connected with the position detection signal transmitting and receiving device, provides power for the position detection signal transmitting and receiving device and decodes the signal from the position detection signal transmitting and receiving device to be used by the lower equipment connected with the position detection signal transmitting and receiving device, however, the electronic feedback system of the zoom lens with magnification adjustment indication is complex and has high design and production cost.
Disclosure of Invention
Aiming at the problems, the invention provides the manual zoom lens with the potentiometer electronic feedback device, which is convenient to operate, stable in performance, simple in structure and low in design and production cost, and can effectively reduce the unreliability of manual operation and greatly improve the working efficiency.
The technical scheme is as follows: a manual zoom lens with a potentiometer electronic feedback device comprises a manual zoom lens main body and an electronic feedback device connected with the manual zoom lens main body, wherein the electronic feedback device is connected with subordinate equipment, the manual zoom lens main body comprises a lens adaptor, an upper lens barrel and a lower lens barrel which are sequentially connected from top to bottom, and a shaft sleeve is rotatably connected inside the lower lens barrel The potentiometer comprises a conductive element, wherein the resistive element, the conductive element and the inner wall surface of a potentiometer base form a step structure, a resistance contact brush and a conductive contact are arranged on the outer wall surface of the inner shaft sleeve, the resistance contact brush is in contact with the resistive element, the conductive contact is in contact with the conductive element, the resistance contact brush is connected with the conductive contact through a conductive adapter, a power supply is connected between two ends of the resistive element, and a resistance monitor is connected between the resistive element and the conductive contact.
It is further characterized in that:
a zoom window is formed on the lower lens cone, the outer shaft is sleeved in the lower lens cone, shaft sleeve threads are arranged on the outer shaft sleeve, and a multiple value is arranged on the outer wall of the outer shaft sleeve;
an annular groove is formed in the inner wall of the lower lens cone, and the top end face of the outer shaft sleeve is mounted in the annular groove in a jacking mode;
the resistance element and the conductive element are both provided with two inner pins, the potentiometer base is provided with a total pin, the inner pins on the conductive element are connected to the total pin in a gathering manner, the power supply is connected between the two inner pins on the resistance element, and the resistance monitor is connected between the inner pins at one end of the resistance element and the conductive contact;
the bottom of the potentiometer base is provided with an electric control device which is cuboid and comprises 3 outer pins, the inner pins at two ends of the resistive element are respectively and correspondingly connected with the outer pins at two sides of the electric control device, the total pin is connected with one outer pin in the middle of the electric control device, and one outer pin in the middle of the electric control device is connected with the lower-level equipment;
and the electric control device is also provided with an LED display lamp, and the LED display lamp is connected with the middle outer pin on the electric control device.
The invention has the advantages of simple and compact structure, convenient operation and stable performance, when the inner shaft sleeve is rotated, the resistance contact brush and the resistive element move relatively, at the moment, the current information of the resistance contact brush is transmitted to the conductive contact through the conductive adapter, and the conductive contact transmits the current information to the lower-level equipment through the conductive element for analog-to-digital conversion, so that the current position information of the manual lens can be fed back, and the multiple information can be obtained to acquire the data of the amplification factor, thereby realizing the feedback of the electronic information, improving the working efficiency of the manual zoom lens and reducing the design and production cost of the electronic feedback of the manual zoom lens.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the electronic feedback device;
FIG. 3 is a schematic view of a partial structure of an electronic feedback device;
FIG. 4 is a schematic view of a partial structure of an electronic feedback device;
FIG. 5 is a wiring schematic of the electronic feedback device;
fig. 6 is a schematic diagram of an electronic feedback circuit of the present invention.
Detailed Description
As shown in fig. 1 to 6, the manual zoom lens with a potentiometer electronic feedback device according to the present invention includes a manual zoom lens body and an electronic feedback device connected thereto, the electronic feedback device is connected to a lower device (not shown in the figure), and the lower device employs a single chip with an analog-to-digital conversion function or other device capable of converting a voltage signal into an angular position digital signal; the manual zoom lens main body comprises a lens adaptor 1, an upper lens barrel 2 and a lower lens barrel 3 which are sequentially connected from top to bottom, a shaft sleeve is rotatably connected inside the lower lens barrel 3, the electronic feedback device comprises a potentiometer base 7 arranged at the bottom of the manual zoom lens main body, the bottom of the shaft sleeve is assembled in the potentiometer base 7, the shaft sleeve is divided into an outer shaft sleeve 10 and an inner shaft sleeve 11 which are integrated for convenient distinguishing, and the potentiometer base 7 is in a hollow annular shape so as to realize that a hollow part can be communicated with a light path; the outer shaft sleeve 10 is arranged outside the potentiometer base 7, the inner shaft sleeve 11 is connected with the inner wall of the potentiometer base 7 in a relative rotation mode, namely, the shaft sleeve can rotate freely and concentrically in the potentiometer base 7, a resistive element 15 and a conductive element 16 which are independent from each other are attached to the inner wall of the potentiometer base 7 from inside to outside, the resistive element 15 and the conductive element 16 form a step structure with the inner wall of the potentiometer base 7, a resistive contact brush 12 and a conductive contact 13 are arranged on the outer wall of the inner shaft sleeve 11, the resistive contact brush 12 is in contact with the resistive element 15, the conductive contact 13 is in contact with the conductive element 16, the resistive contact brush 12 is connected with the conductive contact 13 through a conductive adapter 14, a power supply 22 is connected between two ends of the resistive element 15, and a resistance monitor 9 is connected between the resistive element 15 and the conductive contact 13, wherein, the resistance monitor 9 is replaced by a voltmeter.
A zoom window 4 is formed on the lower lens cone 3, an outer shaft sleeve 10 is arranged in the lower lens cone 3, shaft sleeve threads 6 are arranged on the outer shaft sleeve 10, and a multiple indication value 5 is arranged on the outer wall of the outer shaft sleeve 10; an annular groove (not shown) is arranged on the inner wall of the lower lens barrel 3, and the top end surface of the outer shaft sleeve 10 is arranged in the annular groove in a jacking mode.
In this embodiment, the resistive element 15 and the conductive element 16 are both in a notched annular band shape, or the resistive element 15 and the conductive element 16 may also adopt a discontinuous annular resistor, inner pins 17 and 18 correspondingly communicated with each other are respectively provided at two ends of the resistive element 15 and the conductive element 16 at the notch, a total pin 21 is provided on the potentiometer base 7, the inner pins 18 at two ends of the conductive element 16 are collectively connected to the total pin 21, the power supply 22 is connected between the inner pins 17 at two ends of the resistive element 15, and the resistance monitor 9 is connected between the inner pin 17 at one end of the resistive element 15 and the conductive contact 13; the inner leads 17 at both ends of the resistive element 15 are responsible for supplying power to the resistive element 15, and one of the inner leads of the resistive element 15 is positively charged and the other inner lead is negatively charged; the resistive element 15 is a ring resistor with uniform resistance; the inner leads 18 at the two ends of the conductive element 16 are responsible for receiving the voltage information from the conductive element 16.
The bottom of the potentiometer base 7 is provided with an electric control device 19, the electric control device 19 is cuboid, the electric control device 19 comprises outer pins 20-1, 20-2 and 20-3, inner pins 17 at two ends of the resistive element 15 are respectively and correspondingly connected with the outer pins 20-1 and 20-3 at two sides of the electric control device 19, a total pin 21 is connected with an outer pin 20-2 in the middle of the electric control device 19, and an outer pin 20-2 in the middle of the electric control device 19 is connected with lower-level equipment.
In the present invention, when power is supplied to the outer pin of the electric control device 19, the inner shaft sleeve 11 is rotated, the resistive contact brush 12 will move relative to the resistive element 15, at this time, the current information of the resistive contact brush 15 is transmitted to the conductive contact 13 through the conductive adaptor 14, the conductive contact 13 transmits the current information to the conductive element 16 in the potentiometer base 7, and the conductive element 16 transmits the current information to the outer pin 20-2 of the electric control device 19 through the inner pin 18, so that the resistive contact brush 12, the conductive contact 13, the conductive adaptor 14, the conductive element 16, the inner pin 18, and the total pin 21 have the meaning of transmitting the current on the resistive element 15 to the outer pin 20-2, at this time, the resistive contact brush 12, the conductive contact 13, the conductive adaptor 14, the resistive element 15, the conductive element 16, the inner pin 17, the outer pin 13, and the conductive adaptor 14, The inner leg 18, the outer legs 20-1, 20-2, 20-3, and the total leg 21 form a typical potentiometer circuit system as shown in fig. 6, so that when the inner sleeve 11 is rotated to perform zooming, the rotation angle displacement change of the inner sleeve 11 is converted into a resistance value change, and a voltage U on a resistor R in fig. 6 is caused to change, wherein the resistor R is a part of the resistive element 15 as a detected resistor, i.e., corresponds to the resistive element 15; by utilizing the relationship between the voltage change and the angular displacement change, that is, when the inner sleeve 11 rotates a certain angle, because the resistive element 15 is in a circular ring belt shape and has uniform resistance, the resistance of the resistive element 15 is linear with the rotation angle, and then through a resistance voltage division principle U ═ R (R/R total) × U source, R total is total resistance and has constant resistance, U source is power voltage and has constant voltage value, it can be known that the change of the resistance R is linear with the change of the voltage U, so that the change of the angular displacement is proportional to the change of the voltage U, and then the change of the angular displacement is transmitted to a lower device through the outer pin 20-2 to perform analog-to-digital conversion, so that the information of the current position of the manual lens can be fed back to obtain multiple information, and the data acquisition of the amplification factor of the manual lens can be performed.
The electric control device 19 is also provided with an LED display lamp 8, the LED display lamp 8 is connected with an outer pin 20-2 in the middle of the electric control device 19, wherein the color of the LED display lamp 8 cannot be directly influenced by the change of the resistor R, the LED display lamp 8 is controlled by lower equipment, and when the lower equipment identifies that a signal is the only signal when the zooming is accurate in the whole zooming adjusting process, the lower equipment feeds back a signal to the LED display lamp 8 to change the color of the LED display lamp; for example, when the target magnification of the lens is set to be 0.7, the inner shaft sleeve 11 with the resistive element 15 at the bottom is manually rotated during zooming to enable the scale mark of the magnification indication value 5 in the zooming window 4 to be aligned with the magnification value of 0.7, and at the moment, the LED display lamp 8 displays green to indicate that the zooming lens is rotated to the accurate position of the magnification of 0.7; if the LED display light 8 displays red, it indicates that the zoom lens is not rotated to the position area with the magnification of 0.7, that is, the zoom lens is not rotated to the accurate position with the magnification of 0.7, at this time, the specific numerical value of the magnification of the zoom lens is not clear, and the inner shaft sleeve 11 needs to be rotated continuously until the LED display light 8 displays green.
In summary, the present invention combines the structural characteristics of the manual zoom lens with the electronic feedback device, and designs the device based on the electronic feedback device to measure the current optical magnification of the manual zoom lens, and transmit the corresponding analog electrical signal to the lower-level device, and then convert the analog signal into the digital signal, so as to obtain the accurate lens magnification information from the digital signal information, and transmit the accurate lens magnification information to the lower-level device for the corresponding calculation program requirement, thereby improving the working efficiency, reducing the unreliability of manual operation, greatly improving the working reliability of the manual zoom lens, reducing the design and production cost of the electronic feedback of the manual zoom lens, and being easy to use and popularize.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A manual zoom lens with a potentiometer electronic feedback device comprises a manual zoom lens main body and an electronic feedback device connected with the manual zoom lens main body, wherein the electronic feedback device is connected with subordinate equipment, the manual zoom lens main body comprises a lens adaptor, an upper lens barrel and a lower lens barrel which are sequentially connected from top to bottom, and a shaft sleeve is rotatably connected inside the lower lens barrel The potentiometer comprises a conductive element, wherein the resistive element, the conductive element and the inner wall surface of a potentiometer base form a step structure, a resistance contact brush and a conductive contact are arranged on the outer wall surface of the inner shaft sleeve, the resistance contact brush is in contact with the resistive element, the conductive contact is in contact with the conductive element, the resistance contact brush is connected with the conductive contact through a conductive adapter, a power supply is connected between two ends of the resistive element, and a resistance monitor is connected between the resistive element and the conductive contact.
2. The manual zoom lens with the potentiometer electronic feedback device according to claim 1, wherein: the zoom lens is characterized in that a zoom window is formed in the lower lens cone, the outer shaft is sleeved in the lower lens cone, shaft sleeve threads are arranged on the outer shaft sleeve, and multiple indication values are arranged on the outer wall of the outer shaft sleeve.
3. The manual zoom lens with the potentiometer electronic feedback device according to claim 1, wherein: the inner wall of the lower lens cone is provided with an annular groove, and the top end surface of the outer shaft sleeve is arranged in the annular groove in a jacking mode.
4. The manual zoom lens with the potentiometer electronic feedback device according to claim 1, wherein: the resistance element and the conductive element are both provided with two inner pins, the potentiometer base is provided with a total pin, the inner pins on the conductive element are connected to the total pin in a gathering manner, the power supply is connected between the two inner pins on the resistance element, and the resistance monitor is connected between the inner pins at one end of the resistance element and the conductive contact.
5. The manual zoom lens with the potentiometer electronic feedback device according to claim 4, wherein: the potentiometer base bottom is equipped with electrically controlled device, electrically controlled device is the cuboid, electrically controlled device includes 3 outer pins, the resistive element both ends the interior pin respectively with the last both sides of electrically controlled device outer pin corresponds the connection, total pin with one in the middle of on the electrically controlled device outer pin is connected, one in the middle of on the electrically controlled device outer pin with subordinate's equipment is connected.
6. The manual zoom lens with the potentiometer electronic feedback device according to claim 5, wherein: and the electric control device is also provided with an LED display lamp, and the LED display lamp is connected with the middle outer pin on the electric control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031133.4A CN110631473B (en) | 2019-10-28 | 2019-10-28 | Manual zoom lens with potentiometer electronic feedback device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031133.4A CN110631473B (en) | 2019-10-28 | 2019-10-28 | Manual zoom lens with potentiometer electronic feedback device |
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| CN110631473A true CN110631473A (en) | 2019-12-31 |
| CN110631473B CN110631473B (en) | 2024-06-18 |
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