CN108966424A - A kind of control method of microscope light source - Google Patents
A kind of control method of microscope light source Download PDFInfo
- Publication number
- CN108966424A CN108966424A CN201810921975.6A CN201810921975A CN108966424A CN 108966424 A CN108966424 A CN 108966424A CN 201810921975 A CN201810921975 A CN 201810921975A CN 108966424 A CN108966424 A CN 108966424A
- Authority
- CN
- China
- Prior art keywords
- light source
- circuit
- led
- control
- control method
- 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.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/002—Scanning microscopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The present invention designs a kind of control method of microscope light source, use multiple power supplies for the light-emitting LED power supply of different wave length, increase fictitious load and high speed COMS bus exchange switch in adjusting control circuit, when needing to switch the light source of different wave length, the light-emitting LED constant current closed and power circuit will be needed to be switched in fictitious load, the led constant current opened and power circuit will be needed to be switched on light-emitting LED, reduce the load variation of each road constant-current circuit and power supply, to improve switch speed, the stability of light source is promoted.
Description
Technical field
The present invention relates to a kind of control method, specially a kind of control method of microscope light source.
Background technique
Full microscope scanning system is the high-precision scanner occurred in recent years, is widely used in medicine and grinds
Study carefully, clinical application, the fields such as biological study and industrial application.In photomicrograph system, need to use the illumination of multi-wavelength
Sample is penetrated (when taking pictures using gray scale camera, to light single-wavelength light irradiation sample and light when taking pictures using colour TV camera
White light sample), the brightness of every kind of light with fine adjustment and be able to will guarantee to stablize, different wave length switch speed it is more fast more
It is good.
Problem is: when the load acute variation of power supply, the output of power supply can be unstable, causes light source luminescent unstable；
When constant-current drive circuit loads acute variation, the electric current stable time is relatively longer, causes switch speed slack-off.
Summary of the invention
It is an object of the invention to provide one kind for above-mentioned problem can effectively reduce matching for reagent dosage
A kind of microscope light source control method.
A kind of control method of microscope light source of the present invention, including microscope light source (LED) circuit, it is set to microscope light
The constant-current control circuit of source circuit front end, the microscope light source circuit are connected with constant-current control circuit, the current constant control electricity
Road is for being arranged and constant current size.
Further, the LED circuit be equipped with switching switch Q1, by switching switch Q1 control LED circuit open and
It closes；
As further scheme of the invention: for the LED switch for preferably controlling different wave length, LED circuit is also parallel with I
Min control circuit and I q control circuit；
Further, the I min control circuit passes through switching switch Q2 control；
The I q control circuit passes through switching switch Q3 control.
As further scheme of the invention: the LED circuit, I min control circuit and I q control circuit are in parallel respectively
It connect with light source power Vpp, is controlled by light source power Vpp.
Working principle:
1, when LED does not need work, switch switch Q1, Q2, Q3 and close, the output of light source power Vpp non-transformer；
2, when taking pictures using colour TV camera, white light sample need to be lighted, then controls switching switch Q1, Q2 conducting,
Switching switch Q3 is simultaneously closed, power supply output=I led+I min of light source power Vpp；
3, when being taken pictures using gray scale camera, single-wavelength light irradiation sample need to be lighted, then controls Q2, Q3 conducting, Q1 is closed,
Its Vpp electric current output=I q+I min, I q is approximately equal to I led intermediate value.
The present invention designs a kind of control method of microscope light source, uses multiple power supplies for the light-emitting LED confession of different wave length
Electricity, increasing fictitious load and high speed COMS bus exchange switch in adjusting control circuit will need when needing to switch the light source of different wave length
The light-emitting LED constant current and power circuit closed are switched in fictitious load, and the led constant current opened and power circuit will be needed to be switched to
On light-emitting LED, the load variation of each road constant-current circuit and power supply is reduced, to improve switch speed, promotes the stability of light source.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is control module schematic diagram of the invention；
Fig. 2 is control circuit schematic diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, to the detailed description of the invention.
Referring to figs. 1 and 2, the control method of a kind of microscope light source disclosed by the invention, including LED (microscope
Light source) circuit, it is set to the constant-current control circuit of LED circuit front end, microscope light source circuit is connected with constant-current control circuit, false
Load circuit is used to reduce the load variation of each road constant-current circuit and power supply, and constant-current control circuit is big with constant current for being arranged
It is small.
Further, LED circuit is equipped with switching switch Q1, and the Push And Release of LED circuit is controlled by switching switch Q1；
As further scheme of the invention: for the LED switch for preferably controlling different wave length, LED circuit is also parallel with I
Min control circuit and I q control circuit, I min control circuit and I q control circuit are dummy load circuit, for reducing each road
The load of constant-current circuit and light source power Vpp change；
Further, I min control circuit passes through switching switch Q3 control by switching switch Q2 control, I q control circuit
System.
As further scheme of the invention: LED circuit, I min control circuit and the parallel connection of I q control circuit difference and light
Source current Vpp connection, is controlled by light source power Vpp.
As further scheme of the invention: when LED does not need work, by switching switch Q1, Q2, Q3 and closing, light source
The output of power supply Vpp circuitry non-transformer, then light-emitting LED 1 do not work；
Further, when using colour TV camera take pictures when, white light sample need to be lighted, then control switching switch Q1,
Q2 conducting switches switch Q3 and closes, and light-emitting LED 1 constant current and light source power Vpp circuitry are switched on light-emitting LED 1；
Further, when being taken pictures using gray scale camera, single-wavelength light irradiation sample need to be lighted, then controls Q2, Q3 conducting,
Q1 is closed, and light-emitting LED constant current and light source power Vpp circuitry are switched on dummy load circuit.
The above content is merely illustrative of the technical solution of the present invention, rather than limiting the scope of the invention, this field
Those of ordinary skill to technical solution of the present invention carry out it is simple modification or equivalent replacement, all without departing from the technology of the present invention
The spirit and scope of scheme.
Claims (6)
1. a kind of control method of microscope light source, including LED (microscope light source) circuit, it is set to the constant current of LED circuit front end
Control circuit, the LED circuit are connected with constant-current control circuit, it is characterised in that: the LED circuit is equipped with switching switch
Q1 controls the Push And Release of LED circuit by switching switch Q1.
2. a kind of control method of microscope light source according to claim 1, it is characterised in that: different for preferably control
The LED switch of wavelength, LED circuit are also parallel with I min control circuit and I q control circuit.
3. a kind of control method of microscope light source according to claim 2, it is characterised in that: the I min control electricity
Road passes through switching switch Q3 control by switching switch Q2 control, the I q control circuit.
4. a kind of control method of microscope light source according to claim 1, it is characterised in that: the LED circuit, I
Parallel connection is connect with light source power Vpp respectively for min control circuit and I q control circuit, is controlled by light source power Vpp.
5. a kind of control method of microscope light source according to claim 1, it is characterised in that: when using colour TV camera
When taking pictures, white light sample need to be lighted, then controls switching switch Q1, Q2 conducting, switches switch Q3 and close, light source power
The power supply output of Vpp=I led+I min.
6. a kind of control method of microscope light source according to claim 1, it is characterised in that: clapped when using gray scale camera
According to when, need to light single-wavelength light irradiation sample, then control Q2, Q3 conducting, Q1 close, Vpp electric current output=I q+I min, I
Q is approximately equal to I led intermediate value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921975.6A CN108966424A (en) | 2018-08-14 | 2018-08-14 | A kind of control method of microscope light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921975.6A CN108966424A (en) | 2018-08-14 | 2018-08-14 | A kind of control method of microscope light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108966424A true CN108966424A (en) | 2018-12-07 |
Family
ID=64469713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810921975.6A Pending CN108966424A (en) | 2018-08-14 | 2018-08-14 | A kind of control method of microscope light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108966424A (en) |
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| CN107995736A (en) * | 2017-12-15 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, power inverter and control method |
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| CN101576652A (en) * | 2009-04-13 | 2009-11-11 | 宁波舜宇仪器有限公司 | Cursor module for microscope |
| US20120262782A1 (en) * | 2011-04-15 | 2012-10-18 | Lee Jeffrey B | Multiple Wavelength LED Array Illuminator for Fluorescence Microscopy |
| CN102768402A (en) * | 2012-07-09 | 2012-11-07 | 常州工学院 | Microscope with adjustable illuminating color temperature and brightness |
| CN203745721U (en) * | 2014-01-21 | 2014-07-30 | 宁波永新光学股份有限公司 | Microscope illuminating apparatus |
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| CN104955203A (en) * | 2014-03-28 | 2015-09-30 | 深圳市明微电子股份有限公司 | LED color temperature adjusting circuit and LED lamp |
| CN104812146A (en) * | 2015-05-15 | 2015-07-29 | 北京易方通达科技有限公司 | Light dimming and color regulating control method for wireless controllable multi-path LEDs (Light-Emitting Diodes) connected in parallel to current source |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181207 |
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| WD01 | Invention patent application deemed withdrawn after publication |