CN104783762A - Imaging optical measurement device for position sine wave frequency coding - Google Patents

Imaging optical measurement device for position sine wave frequency coding Download PDF

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Publication number
CN104783762A
CN104783762A CN201510196826.4A CN201510196826A CN104783762A CN 104783762 A CN104783762 A CN 104783762A CN 201510196826 A CN201510196826 A CN 201510196826A CN 104783762 A CN104783762 A CN 104783762A
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light
monochromater
sensitive device
monochromatic
group
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李刚
王怀乐
彭瑶
徐思佳
胡雅佳
林凌
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Tianjin University
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Tianjin University
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses an imaging optical measurement device for position sine wave frequency coding. The imaging optical measurement device comprises all monochromatic sources in a group of monochromatic sources and all photosensors in a group of photosensors, all the monochromatic sources and all the photosensors are arrayed uniformly in a linear mode, and the array intervals are identical; the monochromatic sources and the photosensors move synchronously in the linear distribution direction perpendicular to the monochromatic sources, and output signals of the photosensors are sampled when the monochromatic sources and the photosensors move for a preset distance; all the monochromatic sources in a group of monochromatic sources are driven by the sine waves of different frequencies respectively, and all the photosensors in a group of photosensors receive the monochromatic light combination of all the monochromatic sources penetrating a sample; a computer demodulates and separates the monochromatic light combination to obtain the contribution of each monochromatic source in the monochromatic light combination, and accordingly the imaging of the sample is achieved. By means of the device, the high-accuracy measurement of high speed and large information is achieved, and the device has the advantages that the structure and a circuit are simple, the devices and technology requirements are low, the debugging is easy, the reliability is high and the like.

Description

The imaging measuring device of a kind of position sine wave freuqency coding
Technical field
The present invention relates to imaging measuring device field, particularly relate to the imaging measuring device of a kind of position sine wave freuqency coding.
Background technology
By light, imaging is carried out to interior of articles in prior art, particularly imaging is carried out to inside of human body, there is the outstanding advantages that harmless noinvasive is radiationless, but not yet there is the face battle array imaging measuring system that can enter Clinical practice so far, its reason is that existing imaging measuring device precision is low, quantity of information is less, cannot meet the needs in practical application.
Summary of the invention
The invention provides the imaging measuring device of a kind of position sine wave freuqency coding, present invention achieves the high-acruracy survey of high speed, the greatly imaging of information, meet the needs in practical application, described below:
The imaging measuring device of a kind of position sine wave freuqency coding, described imaging measuring device comprises: one group of monochromater, one group of light-sensitive device, and the computer external with light-sensitive device, one group of monochromater is distributed in the one side of sample, and one group of light-sensitive device is distributed in the another side of sample;
Wherein, each light-sensitive device in each monochromater in one group of monochromater, one group of light-sensitive device is linear evenly distributed, and arrangement pitch is identical;
Monochromater and light-sensitive device synchronously move along the linear distribution direction of vertical single color light source, and often the mobile output signal of a predeterminable range to light-sensitive device is sampled;
Adopt different frequency sine wave to drive each monochromater in one group of monochromater respectively, in one group of light-sensitive device, each light-sensitive device receives each monochromater and combines through the monochromatic light of sample;
Computer carries out to monochromatic light combination the contribution that demodulation is separated each monochromater obtained in monochromatic light combination, realizes the imaging to sample accordingly.
Wherein, monochromater and light-sensitive device are symmetrical arranged on sample two sides.
Described monochromater is laser diode, and described light-sensitive device is light sensitive diode.
Another embodiment, described monochromater is monochrome photodiode, and described light-sensitive device is light sensitive diode.
Another embodiment, described monochromater be monochromatic filter plate to monochromatic light after white light filtering, described light-sensitive device is light sensitive diode.
Another embodiment, described monochromater is laser diode, and described light-sensitive device is photomultiplier tube.
Another embodiment, described monochromater is monochrome photodiode, and described light-sensitive device is photomultiplier tube.
Another embodiment, described monochromater be monochromatic filter plate to monochromatic light after white light filtering, described light-sensitive device is photomultiplier tube.
The beneficial effect of technical scheme provided by the invention is: the present invention adopts different frequency sine wave drive monochromater, the contribution that separation can obtain each monochromater in monochromatic light combination is carried out to the photosignal that light-sensitive device detects, and then the imaging realized sample, present invention achieves the high-acruracy survey of high speed, large information, and there is structure and circuit is simple, device and technological requirement is low, debugging easily, high reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the imaging measuring device of a kind of position sine wave freuqency coding;
Fig. 2 is monochromater provided by the invention, sample and light-sensitive device relative position schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows:
1: one group of monochromater; 2: sample;
3: one groups of light-sensitive devices.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
Embodiment 1
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, described imaging measuring device comprises: one group n monochromater 1 (LD 1lD n) and one group n light-sensitive device 3 (PD 1pD n) (n is odd number, then middle light source or light-sensitive device can be used as center line, is convenient to aim at arrangement, and wherein, the concrete value of n is relevant to the cross-sectional area of sample 2, and the embodiment of the present invention does not limit this); One group of monochromater 1 is distributed in the one side of sample 2, and one group of light-sensitive device 3 is distributed in the another side of sample 2;
Wherein, each monochromater LD in one group of monochromater 1 1lD n, each light-sensitive device PD in one group of light-sensitive device 3 1pD nlinear evenly distributed, arrangement pitch is identical.This imaging measuring device also comprises the computer (not shown) external with one group of light-sensitive device 3.
Preferred monochromater 1 and light-sensitive device 3 are symmetrical arranged on sample two sides, and monochromater 1 and light-sensitive device 3 can synchronously move along the linear distribution direction of vertical single color light source 1, and often the mobile output signal of a predeterminable range to light-sensitive device 3 is sampled.
Adopt sinusoidal wave each the monochromater LD driven respectively in one group of monochromater 1 of different frequency ij, each light-sensitive device PD in one group of light-sensitive device 3 ijreceive each monochromater LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each monochromater LD ijcontribution, imaging can be carried out to sample 2 accordingly.
That is, according to each just to the light intensity that the light-sensitive device of monochromater receives, backprojection reconstruction obtains the transmission image of sample 2, and the light-sensitive device of other positions obtains the information of this wavelength as auxiliary, strengthening image information.According to the organizational information in graphical analysis sample 2, determine the scattering degree information of sample tissue.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 2
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromater LD 1lD n, light sensitive diode is as light-sensitive device PD 1pD nfor example is described.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromater 1 of different frequency ij, each light sensitive diode PD in one group of light-sensitive device 3 ijreceive each laser diode LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each laser diode LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 3
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromater LD 1lD n, light sensitive diode is as light-sensitive device PD 1pD nfor example is described.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromater 1 of different frequency ij, each light sensitive diode PD in one group of light-sensitive device 3 ijreceive each monochrome photodiode LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each monochrome photodiode LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 4
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment using monochromatic filter plate to monochromatic light after white light filtering as monochromater LD 1lD n, light sensitive diode is as light-sensitive device PD 1pD nfor example is described.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromater 1 to monochromatic light LD after white light filtering respectively ij, each light sensitive diode PD in one group of light-sensitive device 3 ijreceive each monochromatic light LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each monochromatic light LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 5
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromater LD 1lD n, photomultiplier tube is as light-sensitive device PD 1pD nfor example is described.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromater 1 of different frequency ij, each photomultiplier tube PD in one group of light-sensitive device 3 ijreceive each laser diode LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each laser diode LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 6
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromater LD 1lD n, photomultiplier tube is as light-sensitive device PD 1pD nfor example is described.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromater 1 of different frequency ij, each photomultiplier tube PD in one group of light-sensitive device 3 ijreceive each monochrome photodiode LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each monochrome photodiode LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 7
An imaging measuring device for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment using monochromatic filter plate to monochromatic light after white light filtering as monochromater LD 1lD n, photomultiplier tube is as light-sensitive device PD 1pD nfor example is described.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromater 1 to monochromatic light LD after white light filtering respectively ij, each photomultiplier tube PD in one group of light-sensitive device 3 ijreceive each monochromatic light LD ijthrough the monochromatic light combination I of sample 2 ij; Computer combines I to monochromatic light ijcarry out demodulation separation and can obtain monochromatic light combination I ijin each monochromatic light LD ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. the imaging measuring device of a position sine wave freuqency coding, described imaging measuring device comprises: one group of monochromater, one group of light-sensitive device, and the computer external with light-sensitive device, it is characterized in that, one group of monochromater is distributed in the one side of sample, and one group of light-sensitive device is distributed in the another side of sample;
Wherein, each light-sensitive device in each monochromater in one group of monochromater, one group of light-sensitive device is linear evenly distributed, and arrangement pitch is identical;
Monochromater and light-sensitive device synchronously move along the linear distribution direction of vertical single color light source, and often the mobile output signal of a predeterminable range to light-sensitive device is sampled;
Adopt different frequency sine wave to drive each monochromater in one group of monochromater respectively, in one group of light-sensitive device, each light-sensitive device receives each monochromater and combines through the monochromatic light of sample;
Computer carries out to monochromatic light combination the contribution that demodulation is separated each monochromater obtained in monochromatic light combination, realizes the imaging to sample accordingly.
2. the imaging measuring device of a kind of position according to claim 1 sine wave freuqency coding, it is characterized in that, monochromater and light-sensitive device are symmetrical arranged on sample two sides.
3. the imaging measuring device of a kind of position according to claim 1 sine wave freuqency coding, it is characterized in that, described monochromater is laser diode, and described light-sensitive device is light sensitive diode.
4. the imaging measuring device of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromater is monochrome photodiode, and described light-sensitive device is light sensitive diode.
5. a kind of position according to claim 1 and 2 sine wave freuqency coding imaging measuring device, it is characterized in that, described monochromater be monochromatic filter plate to monochromatic light after white light filtering, described light-sensitive device is light sensitive diode.
6. the imaging measuring device of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromater is laser diode, and described light-sensitive device is photomultiplier tube.
7. the imaging measuring device of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromater is monochrome photodiode, and described light-sensitive device is photomultiplier tube.
8. a kind of position according to claim 1 and 2 sine wave freuqency coding imaging measuring device, it is characterized in that, described monochromater be monochromatic filter plate to monochromatic light after white light filtering, described light-sensitive device is photomultiplier tube.
CN201510196826.4A 2015-04-23 2015-04-23 Imaging optical measurement device for position sine wave frequency coding Pending CN104783762A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404665A (en) * 2016-10-20 2017-02-15 天津大学 Imaging light measuring device adopting preset level raised sine wave frequency encoding
CN106534617A (en) * 2016-10-20 2017-03-22 天津大学 Planar array CCD preset-level-improved sine wave frequency coding imaging system

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Publication number Priority date Publication date Assignee Title
CN1036633A (en) * 1988-02-22 1989-10-25 株式会社三丰 Optical encoder
US20070078350A1 (en) * 2005-10-04 2007-04-05 Wake Robert H Laser imaging apparatus with variable power, orbit time and beam diameter
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404665A (en) * 2016-10-20 2017-02-15 天津大学 Imaging light measuring device adopting preset level raised sine wave frequency encoding
CN106534617A (en) * 2016-10-20 2017-03-22 天津大学 Planar array CCD preset-level-improved sine wave frequency coding imaging system

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Application publication date: 20150722