CN202949497U - Focusing speed automatic control device for telephoto lenses - Google Patents
Focusing speed automatic control device for telephoto lenses Download PDFInfo
- Publication number
- CN202949497U CN202949497U CN 201220705608 CN201220705608U CN202949497U CN 202949497 U CN202949497 U CN 202949497U CN 201220705608 CN201220705608 CN 201220705608 CN 201220705608 U CN201220705608 U CN 201220705608U CN 202949497 U CN202949497 U CN 202949497U
- Authority
- CN
- China
- Prior art keywords
- focusing
- converter
- motor
- lens
- zoom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lens Barrels (AREA)
Abstract
The utility model provides a focusing speed automatic control device for telephoto lenses, which comprises a zoom motor used for controlling the lens focusing of a camera, a focusing motor used for controlling the focus lens group of the camera, an angle collector used for collecting the angle of the zoom motor, a lens zoom operation switch used for operating the zoom motor, and a processing control unit. The processing control unit comprises a focusing operation key, an AD converter, a DA converter, a processor and a memory. The analog input end of the AD converter is connected with the output end of the angle collector. The focusing operation key and the output end of the AD converter are connected with the on-chip input end of the processor. The input end of the DA converter is connected with the on-chip output end of the processor. The memory and the on-chip part of the processor are connected together. The analog signal output end of the DA converter is connected with the input end of the drive unit of the focusing motor. According to the technical scheme of the utility model, the zooming regulation and the focusing regulation are integrated by the automatic control device, so that telephoto lenses are more convenient and simpler in focusing operation.
Description
Technical field
The utility model relates to camera telephoto lens focusing speed automation field, particularly a kind of electronic three variable, focus on the automatic control equipment of focusing greater than the burnt zoom camera lens of the length more than 500mm.
Background technology
Telephoto lens refers to the phtographic lens longer than the focal length of standard lens, and focal length can reach thousands of millimeters variations (being called zoom lens) from tens millimeters.Long focal length lens is divided into common long shot and super long shot two classes.The focal length of the common long shot camera lens that is near the mark, and the focal length of super long shot is far longer than standard lens.In electronic zoom camera lens, the camera lens of two types is arranged, a kind of is two variable lenses; Another kind is Tri-Chargable lens.Two variable lenses refer to that focal length (f '), focusing (Fcous) all drive variation by motor, and aperture (IRIS) is controlled automatically by the camera driver signal, i.e. auto iris.Three variablely refer to that focal length, focusing, three parameters of aperture all change by electrical motor driven.In the market electronic
Two, three variable, focus on greater than the burnt zoom lens of the length more than 300mm, it is independently to carry out that zoom is regulated with focus adjustment, both do not have relevance.When optical camera lens be operated in focal length greater than 300mm observation situation under, Power focus adopts the 6V of manufacturer's regulation or 12V to drive, and is difficult to be transferred to best articulation point.This just may lose the captured target best opportunity.
The utility model content
The purpose of this utility model is, a kind of telephoto lens focusing auto speed control device is provided, the Automatic Control Theory of servomechanism is applied in the Power focus optical lens, set up a kind of causality, originally be zoom adjustment and these two of focus adjustment the operation of independent non-correlation, combined the automatic control equipment that forms a kind of telephoto lens focusing speed.
The technical solution of the utility model is: a kind of telephoto lens focusing auto speed control device, comprise the zoom motor of controlling the camera lens focusing, the focusing motor of controlling camera lens focusing lens group, the lens zoom console switch, the processing and control element (PCE) that also comprise the corner collector that gathers described zoom motor corner, described zoom motor is operated; Described processing and control element (PCE) comprises focusing operation button, AD converter, DA transducer, processor and memory, the output of the described corner collector of analog input termination of AD converter, input in the output termination processor piece of described focusing operation button and AD converter, be connected in output in the input termination processor piece of DA transducer, memory and described processor piece; The analog signal output of DA transducer connects the input of the driver element of described focusing motor.
Further, in above-mentioned telephoto lens focusing auto speed control device: described processing and control element (PCE) is that the chip model is the microcontroller of C8051F310.
Further, in above-mentioned telephoto lens focusing auto speed control device: described corner collector is potentiometer, and described potentiometer is powered by high-precision reference voltage source.
The utility model combines the zoom adjustment with focus adjustment, produce a kind of automatic control equipment to telephoto lens focusing speed, the camera definition is regulated become convenient and simple.
The utility model was zoom adjustment and focus adjustment the operation of independent non-correlation originally, set up a kind of causality.Zoom operation is converted to aanalogvoltage, through the data after the A/D conversion, as regulating the foundation that focuses on motor speed.one with built-in A/D, the C8051F310 of D/A is the processing and control element (PCE) of acp chip SOC microcontroller, it completes following task: in case this aanalogvoltage detected, convert thereof into 8 bit digital quantity by A/D, the continuous data that are 300mm with the interior corresponding focal length of storing of C8051F310 sheet compare simultaneously, according to the algorithm of being determined by field test in advance, calculate and focus on the motor speed data, D/A becomes aanalogvoltage with this data transaction, if operating personnel press the lens focus operation push-button, focus on electric-motor drive unit and drive the focusing motor, automatically change lens focus speed, although camera lens additional power source voltage is still 12V(6V), as long as the focal length of camera lens meets or exceeds 300mm, focusing on motor speed slows down automatically, along with the elongated rotating speed of focal length will be more and more slower, need not manual intervention.
A kind of telephoto lens focusing of the utility model speed automatic control technology advance is:
1), independently zoom and focusing operation consist of an interconnected system the traditional optical camera lens;
2), realize that the rotating speed that focuses on motor solves telephoto lens at long burnt end image definition adjusting difficult problem with big or small change of focal length, improves focusing accuracy and shortens the operating time;
3), this module can be transplanted to every telephoto lens that focuses on motor with direct voltage drive.
Below in conjunction with specific embodiment, the utility model is done comparatively detailed description.
Description of drawings
Fig. 1 is the utility model embodiment 1 structured flowchart.
Embodiment
Embodiment 1, as shown in Figure 1, the present embodiment is a kind of the zoom adjustment to be combined with focus adjustment, produce a kind of automatic control equipment to telephoto lens focusing speed, this device comprises the zoom motor 2 of controlling the camera lens focusing, the focusing motor 8 of controlling camera lens focusing lens group 9, the lens zoom console switch 1, the processing and control element (PCE) 5 that also comprise the corner collector 3 that gathers zoom motor 2 corners, zoom motor 2 is operated;
In the present embodiment, corner collector 3 is potentiometer, and potentiometer produces analog signal by high-precision reference voltage source 4 power supplies.When operating personnel use zoom electric motor operation switch 1 to do the operation of camera lens zoom, zoom motor 2 rotates, the zoom motor corner collection potentiometer that drives by high-precision reference voltage source 4 power supplies by the gear hinge synchronously rotates, and becomes 2 rotational transforms of zoom motor aanalogvoltage to output to processing unit 5.
Processing and control element (PCE) 5 is the microcontroller of C8051F310 for the chip model, comprise the focusing operation button, 6, AD converter, DA transducer, processor and memory, the output of the described corner collector 3 of analog input termination of AD converter, input in the output termination processor piece of focusing operation button 6 and AD converter, be connected in output in the input termination processor piece of DA transducer, memory and described processor piece; The analog signal output of DA transducer connects the driving signal input of the driver element 7 of described focusing motor 8.
In the present embodiment, processing and control element (PCE) take the C8051F310 of built-in A/D, D/A as acp chip, to convert thereof into 8 bit digital quantity by A/D in case the aanalogvoltage of zoom motor corner collection potentiometer output detected, simultaneously constantly with the C8051F310 on-chip memory in corresponding focal length be the data comparison of 300mm, produce and focus on the motor speed related data according to the algorithm of being determined by test, D/A becomes aanalogvoltage with this data transaction.If operating personnel press focusing operation button 6, drive focusing motor 8 by focusing on electric-motor drive unit 7, drive the adjusting that the lens focus lens set realizes image definition.
the operation principle of the telephoto lens focusing speed of the present embodiment is: the Automatic Control Theory of servomechanism is applied to power zoom, in the optical lens that focuses on, the control of Power focus speed, be actually a small-sized servomechanism, the core devices of processing controls is the SOC(SOC (system on a chip)) type single-chip microcomputer C8051F310, provide reference voltage with high stable temperature coefficient voltage source, supply with the inner high accuracy current potential device that gathers focal length value of camera lens, the corner of zoom motor is converted to corresponding direct voltage, process C8051F310 makes the definite comparison value that focuses on motor speed of digital quantity conduct after the A/D conversion, an equation that is obtained by field test is arranged in programming, when the known value of lens focus at that time, can obtain and focus on the required rotating speed of motor, can allow the operator easily find the clear picture point.
The above, it is only a kind of telephoto lens focusing speed automatic control technology preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, the any trickle modification that every foundation technical spirit of the present utility model is done top embodiment, be equal to and change and modify, all still belonging in the scope of the utility model technology.
Claims (3)
1. telephoto lens focusing auto speed control device, comprise the zoom motor of controlling the camera lens focusing, the focusing motor of controlling camera lens focusing lens group, it is characterized in that: the lens zoom console switch (1), the processing and control element (PCE) (5) that also comprise the corner collector (3) that gathers described zoom motor (2) corner, described zoom motor (2) is operated;
Described processing and control element (PCE) (5) comprises focusing operation button (6), AD converter, DA transducer, processor and memory, the output of the described corner collector of the analog input termination of AD converter (3), input in the sheet of the output termination processor of described focusing operation button (6) and AD converter, be connected in output in the sheet of the input termination processor of DA transducer, memory and described processor piece; The analog signal output of DA transducer connects driver element (7) input of described focusing motor (8).
2. telephoto lens according to claim 1 focusing auto speed control device, it is characterized in that: described processing and control element (PCE) (5) is the microcontroller of C8051F310 for the chip model.
3. telephoto lens according to claim 1 focusing auto speed control device, it is characterized in that: described corner collector (3) is potentiometer, and described potentiometer is powered by high-precision reference voltage source (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705608 CN202949497U (en) | 2012-12-19 | 2012-12-19 | Focusing speed automatic control device for telephoto lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705608 CN202949497U (en) | 2012-12-19 | 2012-12-19 | Focusing speed automatic control device for telephoto lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949497U true CN202949497U (en) | 2013-05-22 |
Family
ID=48425174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220705608 Expired - Fee Related CN202949497U (en) | 2012-12-19 | 2012-12-19 | Focusing speed automatic control device for telephoto lenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202949497U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301109A (en) * | 2016-09-20 | 2017-01-04 | 北京旷视科技有限公司 | Circuit for controlling motor and motor control method |
| CN106843303A (en) * | 2016-12-09 | 2017-06-13 | 河南中光学集团有限公司 | The automatic control system and its control method of self adaptation camera lens visual field turntable speed |
| CN112087572A (en) * | 2019-06-14 | 2020-12-15 | 北京小米移动软件有限公司 | Method and device for controlling lens zooming, electronic equipment and readable storage medium |
-
2012
- 2012-12-19 CN CN 201220705608 patent/CN202949497U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301109A (en) * | 2016-09-20 | 2017-01-04 | 北京旷视科技有限公司 | Circuit for controlling motor and motor control method |
| CN106843303A (en) * | 2016-12-09 | 2017-06-13 | 河南中光学集团有限公司 | The automatic control system and its control method of self adaptation camera lens visual field turntable speed |
| CN106843303B (en) * | 2016-12-09 | 2023-05-23 | 河南中光学集团有限公司 | Automatic control system and control method for speed of self-adaptive lens view field turntable |
| CN112087572A (en) * | 2019-06-14 | 2020-12-15 | 北京小米移动软件有限公司 | Method and device for controlling lens zooming, electronic equipment and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103389559A (en) | Infrared camera lens based on temperature change compensation and compensation method | |
| CN202949497U (en) | Focusing speed automatic control device for telephoto lenses | |
| CN104133288A (en) | Continuous zooming and automatic focusing microscopic imaging device and method for living tissues | |
| CN103399398A (en) | Automatically-focused microscope | |
| CN209964166U (en) | Ultra-high-speed zoom macro camera and photographing system | |
| CN203350514U (en) | Infrared lens based on temperature variation compensation | |
| CN202270019U (en) | Medical far infrared thermal imaging device adopting wide-angle lens | |
| CN104024906A (en) | Optical instrument, and imaging device | |
| CN106051388B (en) | It is a kind of can remote control smart projector | |
| CN205539653U (en) | Discernment lens iris gear or focus gear rotation range's device and camera lens adjusting device | |
| CN206848663U (en) | A kind of notebook carries the adjusting means of camera | |
| CN204154986U (en) | A kind of high precision lens focus regulating device automatically | |
| CN106210519A (en) | A kind of focus method of the autofocus system of band memory function | |
| CN203480123U (en) | Automatic focusing microscope | |
| CN104111512B (en) | There is lens barrel and the picture pick-up device that can keep out of the way lens | |
| CN104297884B (en) | A kind of portable video otoscope CMOS camera focal length fine-adjustment mechanism | |
| CN202600251U (en) | Microscopic image fusion system | |
| CN104459962A (en) | Power 2.8-12 zoom and power focus monitoring lens and control method thereof | |
| CN103916584A (en) | Image acquisition system | |
| CN102420943B (en) | Photographic device and image display method | |
| CN204009217U (en) | A kind of continuous zoom towards biological tissue microscopic imaging device of automatically focusing | |
| CN105938233A (en) | Infrared automatic focusing system and rapid automatic focusing method | |
| CN103926682B (en) | High-precision electric zoom Power focus three mega pixel day and night lens | |
| CN203323882U (en) | Hand-held zooming thermal imaging system | |
| CN207150707U (en) | Zoom video camera and monitoring system |
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: 20130522 Termination date: 20171219 |