CN109068034A - A kind of number paraxonic structure, camera and macula lutea focusing method - Google Patents
A kind of number paraxonic structure, camera and macula lutea focusing method Download PDFInfo
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- CN109068034A CN109068034A CN201811007386.3A CN201811007386A CN109068034A CN 109068034 A CN109068034 A CN 109068034A CN 201811007386 A CN201811007386 A CN 201811007386A CN 109068034 A CN109068034 A CN 109068034A
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- lcd screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
The invention discloses a kind of digital paraxonic structures, including camera lens, for receiving incident ray；Distance measuring sensor for measuring the flexible distance of camera lens, and transmits measurement result to image information processing module；Imaging sensor, for the received incident ray of the camera lens to be converted to image, and by the image transmitting being converted to image information processing module；The image of image information processing module, measurement result and described image sensor transmission to distance measuring sensor transmission is analyzed in real time, and adjusts the display position of described image on the lcd screen；LCD screen, positioned at the side of described image sensor, for showing the image of described image message processing module transmission and described image being transmitted to visual window；The picture registration for being transferred to the image and the viewfinder window of the visual window forms macula lutea focus image.A kind of digital paraxonic structure disclosed by the invention conveniently can intelligently realize digital paraxonic camera macula lutea focusing.
Description
Technical field
The present invention relates to technical field of semiconductors, and in particular to a kind of number paraxonic structure, with digital paraxonic structure
Camera and macula lutea focusing method.
Background technique
Paraxonic camera, also referred to as paraxonic are found a view formula camera, since optical axis of finding a view is located at beside phtographic lens optical axis, and that
This is parallel, therefore is named " paraxonic " camera." macula lutea " focusing that traditional paraxonic is found a view, when referring to that traditional paraxonic is found a view, from ranging
In the optical path that window is come in, yellow filter is installed on the ranging hole that has a circle (or rectangular), due in visual window
The image come in is the optical path (referring to figure one) different by range-finder window and viewfinder two, will form " macula lutea " image.
By rotating focusing ring, make image and real image overlapping, then completion of focusing in macula lutea.
Paraxonic camera on current market is mainly divided to two classes, using Leca as the digital paraxonic of representative find a view camera with
And Japanese fuji is the pseudo- paraxonic camera of representative.The digital paraxonic of Leca is found a view camera, such as Fig. 1, using ranging window 101
It finds a view with 106 two windows of viewfinder window, first via incident light is reflected into linkage 103 by reflector 102, then passes through
Macular hole 104 is transferred to visual window 105, while the second road incident light enters visual window 105 from viewfinder window 106, when
When the picture registration of first via incident light and the second road incident light, it is meant that focusing completes.Such paraxonic is found a view phase
Machine or optics are found a view, and are not real digital paraxonic.
The pseudo- paraxonic camera of Japanese fuji, optics are found a view structure, as shown in Fig. 2, incident light is incident from viewfinder window 201
It onto prism 202, is then reflected into LCD panel 204 and shows image, view finder is directly observed by view finder eyepiece 203
The optical imagery that window comes out.Such pseudo- paraxonic camera, only one viewfinder when optical focusing, cannot achieve the " yellow of paraxonic
Spot " focusing.
Summary of the invention
The object of the present invention is to provide a kind of digital paraxonic structure, camera and macula lutea focusing methods, and the camera structure is simple,
It conveniently can intelligently realize digital paraxonic camera macula lutea focusing.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of number paraxonic structure, including
Camera lens, for receiving incident ray, the camera lens can stretch；
Distance measuring sensor for measuring the flexible distance of camera lens, and measurement result is transmitted positioned at the side of the camera lens
To image information processing module；
Imaging sensor is set to after the camera lens, for the received incident ray of the camera lens to be converted to image,
And by the image transmitting being converted to image information processing module；
Image information processing module, the measurement positioned at the side of described image sensor, to distance measuring sensor transmission
As a result the image with described image sensor transmission is analyzed in real time, and adjusts the display position of described image on the lcd screen；
LCD screen, positioned at the side of described image sensor, for showing the image of described image message processing module transmission
And described image is transmitted to visual window, the LCD screen is translucent material；
Visual window, and the viewfinder window being located along the same line with the visual window, the visual window and take
Scape window is located at the two sides of the LCD screen, is transferred to the image of the visual window and the image weight of the viewfinder window
Conjunction forms macula lutea focus image.
Further, described image message processing module includes DSP processing unit and FPGA processing unit；The ranging passes
To the DSP processing unit, described image is transmitted to the Distance Transmission that sensor stretches the camera lens by described image sensor
The FPGA unit, the FPGA unit are acquired to described image and are transmitted further to after splicing the DSP processing unit；
The DSP processing unit adjusts the display position of described image on the lcd screen according to the camera lens distance of stretch out and draw back received.
Further, when storing in advance the flexible not same amount of the camera lens in the DSP processing unit, the received image of institute
The coordinate position of corresponding display, the distance that the DSP processing unit stretches according to above-mentioned camera lens, matching should in the LCD screen
Apart from when LCD screen on the coordinate position that shows of image, and control the image and shown in the corresponding position of LCD screen.
Further, the LCD screen is active matrix driving ferroelectric liquid crystals panel.
A kind of digital paraxonic camera provided by the invention, has above-mentioned digital paraxonic structure.
Further, described image message processing module includes DSP processing unit and FPGA processing unit；The ranging passes
To the DSP processing unit, described image is transmitted to the Distance Transmission that sensor stretches the camera lens by described image sensor
The FPGA unit, the FPGA unit are acquired described image and are transmitted further to the DSP processing unit after splicing,
The DSP processing unit analyzes the flexible distance of camera lens, the display position of adjustment described image on the lcd screen in real time.
Further, the LCD screen is active matrix driving ferroelectric liquid crystals panel.
A kind of macula lutea focusing method provided by the invention, using above-mentioned digital paraxonic camera, the macula lutea focusing method
Include:
S01: stroke and fixed lens above and below adjustment camera lens receive incident ray using the camera lens；
S02: distance measuring sensor measures the flexible distance of camera lens, and transmits it to image information processing module；Meanwhile scheming
As incident ray is converted to image by sensor and transmits it to image information processing module；
S03: the distance that described image message processing module stretches according to camera lens, the position of adjustment image on the lcd screen, together
Described image is transmitted to visual window by Shi Suoshu LCD screen, and the LCD screen is translucent material；
S04: the picture registration for being transferred to the image and viewfinder window of visual window forms macula lutea focus image.
Further, described image message processing module includes DSP processing unit and FPGA processing unit；The step
S02 specifically: the Distance Transmission that the distance measuring sensor stretches the camera lens to the DSP processing unit, described image pass
Described image is transmitted to the FPGA unit by sensor；The step S03 specifically: the FPGA unit carries out described image
The DSP processing unit is transmitted further to after acquisition and splicing；The DSP processing unit is according to the camera lens telescopic distance received
From the display position of adjustment described image on the lcd screen.
Further, when storing in advance the flexible not same amount of the camera lens in the DSP processing unit, the received image of institute
The coordinate position of corresponding display, the distance that the DSP processing unit stretches according to above-mentioned camera lens, matching should in the LCD screen
Apart from when LCD screen on the coordinate position that shows of image, and control the image and shown in the corresponding position of LCD screen.
The invention has the benefit that image information processing module can adjust figure according to camera lens stroke in the present invention
As position on the lcd screen, while the image shown in LCD screen is transferred to visual window；And LCD screen is translucent material,
The image of viewfinder window can penetrate LCD screen and be observed, when the image weight for the image and viewfinder window for being transferred to visual window
When conjunction, macula lutea focus image is formed.Digital paraxonic camera structure is simple in the present invention, and ease of assembly is focused efficient and convenient, and
Precision is high, focusing speed is fast；Due to being digital focusing, the parameters such as histogram, date, ISO can be shown in focusing, and can
To obtain the image of high quality.
Detailed description of the invention
Fig. 1 is that traditional paraxonic is found a view the schematic diagram of structure.
Fig. 2 is the schematic diagram of the pseudo- paraxonic structure of tradition.
Fig. 3 is a kind of schematic diagram of digital paraxonic structure of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to the accompanying drawing to specific reality of the invention
The mode of applying is described in further detail.
Below in conjunction with attached drawing 3 and specific embodiment, invention is further described in detail.It should be noted that attached drawing is adopted
With very simplified form, using non-accurate ratio, and only to it is convenient, clearly reach and aid in illustrating the mesh of the present embodiment
's.
As shown in Fig. 3, a kind of digital paraxonic structure provided by the invention includes camera lens 401, and imaging sensor 402 is surveyed
Away from sensor 403, image information processing module 404, LCD screen 405, visual window 406 and viewfinder window 407.Wherein image is believed
Cease processing module 404 includes DSP processing unit and FPGA processing unit again.
In the present invention, camera lens 401 is for receiving incident ray, also, camera lens can stretch, it can along close to image
The direction of sensor or separate imaging sensor is stretched.The model size of camera lens needs and 402 phase of imaging sensor
Match；Imaging sensor 402 is located at after camera lens 401, the received incident ray of camera lens is converted to image, and image transmitting is given
Image information processing module 404, wherein the resolution ratio of imaging sensor can be selected according to specific requirements.Ranging sensing
Device 403 is located at the side of camera lens, can be as shown in Fig. 3, positioned at the lower right of camera lens, can specifically be surveyed using precise laser
Away from sensor, for measuring the distance of camera lens or more telescopic direction, and the result of measurement is sent to image information processing module
In 404.Image information processing module 404 is located at the other side of imaging sensor 402 and distance measuring sensor 403, will receive
Camera lens distance of stretch out and draw back information and image analyzed in real time, and according to the difference of camera lens stroke, by image transmitting to LCD
Different location on screen.LCD screen is located at the side of image information processing module 404, for showing that image information processing module passes
Defeated next image, visual window 406, and the viewfinder window 407 being located along the same line with visual window 406, visual window
406 and viewfinder window 407 be located at the two sides of LCD screen 405.LCD screen is translucent material in the present invention, is specifically as follows active
Ferroelectric liquid crystals panel is driven, since LCD screen is translucent material, the figure being transferred to by image information processing module in LCD screen
As that window can observe by visual observation, the received image of viewfinder window can also penetrate LCD screen, and window is observed by visual observation
It arrives, when two picture registrations, that is, forms macula lutea focusing.
Specifically, image information processing module 404 includes DSP processing unit and FPGA processing unit in the present invention；Ranging
For the Distance Transmission that sensor 403 stretches camera lens 401 to DSP processing unit, imaging sensor 402 is mono- to FPGA by image transmitting
Member, FPGA unit are acquired to image and are transmitted further to after splicing DSP processing unit；It is stored in advance in DSP processing unit
Camera lens flexible not same amount when, the received image of the institute corresponding coordinate position shown on the lcd screen, DSP processing unit is according to upper
State the flexible distance of camera lens, match this apart from when LCD screen on the coordinate position that shows of image, and the image is shown in LCD screen
Upper corresponding position.This is because camera lens and position of image sensor are fixed, flange focal distance determines therewith, and any distance of stretch out and draw back pair
In image, change in location has just write in programmed algorithm in advance on the lcd screen, is stretched corresponding distance, will be connect according to camera lens
The image of receipts is shown on corresponding position on the lcd screen.
Further, since digital focusing is realized using imaging sensor and LCD screen, so, it can be shown in focusing
Parameters such as histogram, date, ISO, such as add data module in cmos image sensors, come show histogram, the date,
The call parameter relevant with image to be shown such as ISO.
The present invention also provides a kind of digital paraxonic camera, which has above-mentioned digital paraxonic structure.
The present invention also provides a kind of macula lutea focusing methods, specifically includes the following steps:
S01: stroke and fixed lens above and below adjustment camera lens receive incident ray using camera lens.
S02: distance measuring sensor measures the flexible distance of camera lens, and transmits it to image information processing module；Meanwhile scheming
As incident ray is converted to image by sensor and transmits it to image information processing module.
S03: the distance that image information processing module is stretched according to camera lens, the position of adjustment image on the lcd screen, simultaneously
Described image is transmitted to visual window by LCD screen.
S04: the picture registration for being transferred to the image and viewfinder window of visual window forms macula lutea focus image, wherein takes
The image of scape window can penetrate LCD screen.
Since image information processing module includes DSP processing unit and FPGA processing unit in the present invention, step S02 and step
Rapid S03 specifically:
Step S02: the Distance Transmission that distance measuring sensor stretches camera lens is to DSP processing unit, and imaging sensor is by image
It is transmitted to FPGA unit.
Step S03:FPGA unit is acquired to image and is transmitted further to after splicing DSP processing unit；DSP processing is single
When storing in advance the flexible not same amount of camera lens in member, the received image of the institute corresponding coordinate position shown on the lcd screen, at DSP
Manage the distance that unit stretches according to above-mentioned camera lens, match this apart from when LCD screen on the coordinate position that shows of image, and by the image
Show corresponding position on the lcd screen.
In addition, digital paraxonic camera can may also have master image sensor, scheme in master image sensor and above structure
It comes as sensor 402 is completely independent.
The above description is only a preferred embodiment of the present invention, and the embodiment is not intended to limit patent protection of the invention
Range, thus it is all with the variation of equivalent structure made by specification and accompanying drawing content of the invention, it similarly should be included in this
In the protection scope of invention appended claims.
Claims (10)
1. a kind of number paraxonic structure, which is characterized in that including
Camera lens, for receiving incident ray, the camera lens can stretch；
Distance measuring sensor for measuring the flexible distance of camera lens, and transmits measurement result to figure positioned at the side of the camera lens
As message processing module；
Imaging sensor is set to after the camera lens, for the received incident ray of the camera lens to be converted to image, and will
The image transmitting being converted to is to image information processing module；
Image information processing module, positioned at the side of described image sensor, to the measurement result of distance measuring sensor transmission
It is analyzed in real time with the image of described image sensor transmission, and adjusts the display position of described image on the lcd screen；
LCD screen, positioned at the side of described image sensor, for show the transmission of described image message processing module image and
Described image is transmitted to visual window, the LCD screen is translucent material；
Visual window, and the viewfinder window being located along the same line with the visual window, the visual window and viewfinder
Mouth is located at the two sides of the LCD screen, is transferred to the image of the visual window and the picture registration shape of the viewfinder window
At macula lutea focus image.
2. a kind of digital paraxonic structure according to claim 1, which is characterized in that described image message processing module includes
DSP processing unit and FPGA processing unit；The distance measuring sensor handles the flexible Distance Transmission of the camera lens to the DSP
Described image is transmitted to the FPGA unit by unit, described image sensor, and the FPGA unit adopts described image
The DSP processing unit is transmitted further to after collection and splicing；The DSP processing unit according to the camera lens distance of stretch out and draw back received,
Adjust the display position of described image on the lcd screen.
3. a kind of digital paraxonic structure according to claim 2, which is characterized in that deposited in advance in the DSP processing unit
When storing up the flexible not same amount of the camera lens, the received image of the institute corresponding coordinate position shown, DSP in the LCD screen
The distance that processing unit stretches according to above-mentioned camera lens, match this apart from when LCD screen on the coordinate position that show of image, and control this
Image is shown in the corresponding position of LCD screen.
4. a kind of digital paraxonic structure according to claim 1, which is characterized in that the LCD screen is active matrix driving ferroelectricity
Liquid crystal display panel.
5. a kind of number paraxonic camera, which is characterized in that have digital paraxonic structure described in claim 1.
6. a kind of digital paraxonic camera according to claim 5, which is characterized in that described image message processing module includes
DSP processing unit and FPGA processing unit；The distance measuring sensor handles the flexible Distance Transmission of the camera lens to the DSP
Described image is transmitted to the FPGA unit by unit, described image sensor, and the FPGA unit adopts described image
Be transmitted further to the DSP processing unit after collection and splicing, the DSP processing unit according to the camera lens distance of stretch out and draw back received,
Adjust the display position of described image on the lcd screen.
7. a kind of digital paraxonic camera according to claim 5, which is characterized in that the LCD screen is active matrix driving ferroelectricity
Liquid crystal display panel.
8. a kind of macula lutea focusing method, which is characterized in that using the digital paraxonic camera described in claim 5, the macula lutea pair
Burnt method includes:
S01: stroke and fixed lens above and below adjustment camera lens receive incident ray using the camera lens；
S02: distance measuring sensor measures the flexible distance of camera lens, and transmits it to image information processing module；Meanwhile image passes
Incident ray is converted to image and transmits it to image information processing module by sensor；
S03: the distance that described image message processing module stretches according to camera lens, the position of adjustment image on the lcd screen, while institute
It states LCD screen and described image is transmitted to visual window, the LCD screen is translucent material；
S04: the picture registration for being transferred to the image and viewfinder window of visual window forms macula lutea focus image.
9. macula lutea focusing method according to claim 8, which is characterized in that described image message processing module includes DSP
Processing unit and FPGA processing unit；The step S02 specifically: the distance that the distance measuring sensor stretches the camera lens passes
The DSP processing unit is transported to, described image is transmitted to the FPGA unit by described image sensor；The step S03 tool
Body are as follows: the FPGA unit is acquired to described image and is transmitted further to after splicing the DSP processing unit；The DSP
Processing unit adjusts the display position of described image on the lcd screen according to the camera lens distance of stretch out and draw back received.
10. a kind of digital paraxonic structure according to claim 9, which is characterized in that deposited in advance in the DSP processing unit
When storing up the flexible not same amount of the camera lens, the received image of the institute corresponding coordinate position shown, DSP in the LCD screen
The distance that processing unit stretches according to above-mentioned camera lens, match this apart from when LCD screen on the coordinate position that show of image, and control this
Image is shown in the corresponding position of LCD screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811007386.3A CN109068034B (en) | 2018-08-31 | 2018-08-31 | Digital paraxial structure, camera and yellow spot focusing method |
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| CN201811007386.3A CN109068034B (en) | 2018-08-31 | 2018-08-31 | Digital paraxial structure, camera and yellow spot focusing method |
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| CN109068034B CN109068034B (en) | 2020-12-25 |
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| CN102385261A (en) * | 2011-11-22 | 2012-03-21 | 合肥芯硕半导体有限公司 | Coaxial focusing device and method of photoetching machine |
| JP2017009893A (en) * | 2015-06-25 | 2017-01-12 | キヤノン株式会社 | Photometric lens and finder optical system having the same |
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