CN205608276U - Foldable typoscope of focusing fast - Google Patents
Foldable typoscope of focusing fast Download PDFInfo
- Publication number
- CN205608276U CN205608276U CN201620043503.1U CN201620043503U CN205608276U CN 205608276 U CN205608276 U CN 205608276U CN 201620043503 U CN201620043503 U CN 201620043503U CN 205608276 U CN205608276 U CN 205608276U
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- focusing
- signal microprocessor
- camera
- microprocessor dsp
- digital signal
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Abstract
The utility model discloses a foldable typoscope of focusing fast has mainly been provided, the device casing has been included, the device casing in data signal microprocessor DSP is equipped with, angle sensor is equipped with in the device casing, data signal microprocessor DSP is connected with the camera electricity, data signal microprocessor DSP is connected with infrared distance measuring sensor is electric, data signal microprocessor DSP is connected with the display is electric. The camera focus before, calculate through angle sensor and data signal microprocessor DSP the camera apart from the vertical height data of paper to draw empirical curve according to the vertical height data with the camera focusing position that corresponds and show, through empirical curve table table look -up and calculate, draw first step focusing position, wait the camera to arrive first step focusing position under the effect of CD -ROM drive motor in, finely tune again to realize quick auto focus.
Description
Technical field
Belong to visual acuity aid field, a kind of design the perception photographic head height to paper by the structure of mechanism itself, and altitude feedback to photographic head, thus the position of focusing motor is quickly set, it is achieved the collapsible visual acuity aid of rapid focus.
Background technology
Traditional auto-focusing, is all from the beginning of fixing preset value, according to gathering image feedback continuous iterative modifications preset value, thus the focus settings value in the case of finding the most clearly.But general fixing preset value distance focus settings value accurately is bigger, in traditional focus process, photographic head needs accumulation to move the longest distance, and during need not stop to do to feed back and adjust, the time of consumption is relatively long.Also some method utilizes infrared range finding, after measuring the distance of photographic head and subject in advance, reaches rapid focus after arranging focusing parameter, then carries out feedback fine setting.But the reflex strength difference that infrared distance measurement is on different objects surface is very big, and for white, smooth object, reflectivity is stronger；Comparatively speaking, black, coarse body surface reflectivity are more weak, influence whether the precision of range finding, less stable.Therefore, this practicality uses the mathematical relationship calculating angle and distance to obtain photographic head and the distance of subject, and obtains suitable focusing according to the experience curve figure of calculating and plotting in advance, then feedback fine setting is carried out, the measurement result of angle is more accurate, and stability is higher, speed of simultaneously focusing.
Summary of the invention
Content of the present utility model is the collapsible visual acuity aid of a kind of rapid focus.Including digital signal microprocessor
DSP
, angular transducer, photographic head, camera bracket, infrared distance sensor and display
;
Before described camera focusing, according to the height of the photographic head distance paper described in described infrared distance sensor perception, by measurement data in advance, calculate the corresponding position of motor focusing, it is achieved fast automatic focusing
;
Described angular transducer is arranged on described camera bracket, and during described camera bracket generation opening and closing movement, described angular transducer can detect that angle changes, and angle change information is converted into data is transferred to described digital signal microprocessor
DSP;
Described digital signal microprocessor
DSP
According to known brachium, calculate the described photographic head vertical height to paper
,
And table look-up and calculate, reason out the focusing position that described motor of camera needs.Do auto-focusing again in this position, make up small error, find point the most clearly；Described digital signal microprocessor
DSP
Range information according to described infrared distance sensor feedback and the angle information of described angular transducer feedback, according to known curve, adjust the focusing of described photographic head, it is achieved rapid focus, described digital signal microprocessor
DSP
Electrically connect with described display.
Accompanying drawing explanation
Accompanying drawing
1
It it is structural representation of the present utility model.
Accompanying drawing
2
It it is functional flow diagram of the present utility model.
Accompanying drawing
3
It it is digital signal microprocessor of the present utility model
DSP
Circuit function structural representation.
Detailed description of the invention
Such as figure
1
Shown in, device case
1
, device case is built with digital signal microprocessor
DSP2
, device case is built with angular transducer
3
, digital signal microprocessor
DSP
With photographic head
4
Electrical connection, digital signal microprocessor
DSP2
With infrared distance sensor
5
Electrical connection, digital signal microprocessor
DSP
With display
7
Electrical connection.
Such as figure
2
Shown in, when described camera bracket does opening and closing movement, the angular transducer described in utilization, the angle that the folding visual acuity aid described in perception is opened, and angle information is passed to described digital signal microprocessor
DSP2
, described digital signal microprocessor
DSP2
According to known brachium, calculate the described photographic head vertical height to paper.Such as figure
3
Shown in, described digital signal main controller and angular transducer
3
Carry out data communication, and export result of calculation.Described photographic head
4
The curve difference of focusing motor bigger, so identical curve can not rely on to do the conversion of distance and focusing position, therefore we are that each focusing motor is measured distance and the relation of focusing position and depicts experience curve table.Table look-up from vertical height to focal position in this utility model.
The focusing position driving motor to need of described photographic head is obtained by described experience curve table is tabled look-up.Waiting that photographic head arrives described focusing position under the effect driving motor, then described main controller controls photographic head
4
Do traditional auto-focusing, make up small error, thus find focusing the most clearly.
The benefit of the present invention:
This utility model can camera lens start focusing before, height according to photographic head to paper, directly calculate the initial value of focusing motor focusing position, preset photographic head parameter, shorten the auto-focusing time to greatest extent, make shooting picture fast and stable clear, decrease from obscuring conversion time clearly, be greatly improved the experience of visual acuity aid user.And being measured relatively accurate by angle, stability is higher.
Claims (1)
1. a collapsible visual acuity aid for rapid focus, including digital signal microprocessor DSP, angular transducer, photographic head, camera bracket, infrared distance sensor and display;Before described camera focusing, according to the height of the photographic head distance paper described in described infrared distance sensor perception, by measurement data in advance, calculate the corresponding position of motor focusing, it is achieved fast automatic focusing;Described angular transducer is arranged on described camera bracket, during described camera bracket generation opening and closing movement, described angular transducer can detect that angle changes, and angle change information is converted into data is transferred to described digital signal microprocessor DSP；Described digital signal microprocessor DSP, according to known brachium, calculates the described photographic head vertical height to paper, and tables look-up and calculate, reason out the focusing position that described motor of camera needs, do auto-focusing again in this position, make up small error, find point the most clearly；The angle information that described digital signal microprocessor DSP feeds back according to range information and the described angular transducer of described infrared distance sensor feedback, according to known curve, adjust the focusing of described photographic head, realizing rapid focus, described digital signal microprocessor DSP electrically connects with described display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043503.1U CN205608276U (en) | 2016-01-18 | 2016-01-18 | Foldable typoscope of focusing fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043503.1U CN205608276U (en) | 2016-01-18 | 2016-01-18 | Foldable typoscope of focusing fast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205608276U true CN205608276U (en) | 2016-09-28 |
Family
ID=56960209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620043503.1U Active CN205608276U (en) | 2016-01-18 | 2016-01-18 | Foldable typoscope of focusing fast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205608276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828609A (en) * | 2018-12-30 | 2019-05-31 | 广东本致技术有限公司 | It is a kind of can adjust automatically angle high-altitude monitoring device |
| CN111010548A (en) * | 2019-03-11 | 2020-04-14 | 南昌工程学院 | Feedback type multi-video stream information fusion system and working method thereof |
-
2016
- 2016-01-18 CN CN201620043503.1U patent/CN205608276U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828609A (en) * | 2018-12-30 | 2019-05-31 | 广东本致技术有限公司 | It is a kind of can adjust automatically angle high-altitude monitoring device |
| CN111010548A (en) * | 2019-03-11 | 2020-04-14 | 南昌工程学院 | Feedback type multi-video stream information fusion system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |