CN109661067A - A kind of crack lamp illuminance adjusting circuit - Google Patents
A kind of crack lamp illuminance adjusting circuit Download PDFInfo
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- CN109661067A CN109661067A CN201811623335.3A CN201811623335A CN109661067A CN 109661067 A CN109661067 A CN 109661067A CN 201811623335 A CN201811623335 A CN 201811623335A CN 109661067 A CN109661067 A CN 109661067A
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- capacitor
- light source
- resistance
- circuit
- source driving
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- 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]
- H05B45/30—Driver circuits
- H05B45/395—Linear regulators
-
- 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- 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
This application discloses a kind of crack lamp illuminances to adjust circuit, comprising: fixation lamp drive circuit, light source driving circuit, potentiometer and lighting source；Power supply input circuit includes controllable switch device, the 5th resistance and the 6th resistance in light source driving circuit, and controlling to adjust circuit includes 3rd resistor and the second capacitor；The resistance value that the application passes through the 5th resistance and the 6th resistance of setting, the maximum output current value of light source driving circuit can be set, by the capacitance for setting 3rd resistor and resistance value and the second capacitor, the switching frequency of light source driving circuit can be set, to according to the maximum output current value of light source driving circuit and the switching frequency of light source driving circuit, obtain the upper and lower bound of the intensity of illumination of broader lighting source, recycle the voltage of the IADJ pin of potentiometer control light source driving circuit, realize the adjusting to intensity of illumination, enable light source driving circuit that lighting source to be driven to change in broader intensity of illumination section.
Description
Technical field
The present invention relates to medical instruments field, in particular to a kind of crack lamp illuminance adjusts circuit.
Background technique
With the fast development of market economy, slit-lamp is popularized in the market.
With computer technology, the fast development of digital imaging techniques, novel photographing slit-lamp new models are endless, wherein
The application of digital camera can be printed on same report by high praise, picture report with textual diagnosis, and audit report can be done
To i.e. look into go out.
However in the prior art, the intensity of illumination minimum of crack lamp source is all in 2000LX or more, the illumination being capable of providing
Strength range is difficult to meet the market demand.
Therefore, it is necessary to a kind of broader slit-lamps of intensity of illumination range.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of crack lamp illuminances to adjust circuit, keep the illumination of light source strong
It is wider to spend variation range.Its concrete scheme is as follows:
A kind of crack lamp illuminance adjusting circuit, comprising: fixation lamp drive circuit, light source driving circuit, potentiometer and photograph
Mingguang City source；
The fixation lamp drive circuit is connect with the light source driving circuit and the potentiometer respectively, the potentiometer with
The light source driving circuit connection, the light source driving circuit are connect with the lighting source；
The light source driving circuit includes light source driving circuit, power supply input circuit, controls to adjust circuit and output circuit；
The power supply input circuit includes controllable switch device, the 5th resistance and the 6th resistance, and the control and regulation circuit includes third
Resistance and the second capacitor；
5th resistance and the 6th resistor coupled in parallel, the first common end of the 5th resistance and the 6th resistance
It connects to power supply, the second common end of the 5th resistance and the 6th resistance and the CSN pin of the light source driving circuit
Connection, the 5th resistance are identical with the 6th resistance；
The output end of the controllable switch device is connect with the CSN pin of the light source driving circuit, the controllable switch
The control terminal of device is connect with the PGATE pin of the light source driving circuit, the input terminal of the controllable switch device with it is described
Output circuit connection；
The 3rd resistor be connected on the output circuit output end and the light source driving circuit COFF pin it
Between, second capacitor is connected on the COFF pin of the light source driving circuit and the ground terminal of the light source driving circuit；
Wherein, by setting the resistance value of the 5th resistance and the 6th resistance, the light source driving circuit is set
Maximum output current value, set the resistance value of the 3rd resistor and the capacitance of second capacitor, set the light source
The switching frequency of driving chip, according to the maximum output current value of the light source driving circuit and opening for the light source driving circuit
Frequency is closed, the upper and lower bound of the intensity of illumination of the lighting source is set.
Optionally, the EN pin of the light source driving circuit is connect with the Switch output terminal of the potentiometer, the electricity
Source is connect with the Switch input terminal of the potentiometer.
Optionally, the light source driving circuit includes third capacitor and the 4th resistance；
The VCC pin of the light source driving circuit is connect with one end of the third capacitor, the third capacitor it is another
The CSP pin at end, one end of the 4th resistance and the light source driving circuit is connected with each other；
The power supply input circuit includes the 8th resistance, the 8th capacitor and the 9th capacitor；
The VIN pin of the light source driving circuit is connect with one end of the 8th resistance, one end of the 8th resistance,
One end of 8th capacitor and one end of the 9th capacitor connect to power supply, the other end of the 8th capacitor with it is described
The other end of 9th capacitor is grounded；
The control and regulation circuit includes first resistor, second resistance and first capacitor；
The other end of 4th resistance, one end of the second resistance and the light source driving circuit UVLO pin phase
Connect, the other end of the second resistance, one end of the first capacitor, the first resistor one end be grounded, it is described
The other end of first resistor is connected with the EN pin of the light source driving circuit, the other end of the first capacitor and the light source
The IADJ pin of driving chip is connected；
The output circuit includes the 7th resistance, inductance, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor and two
Pole pipe；
The cathode of the diode, one end of the 4th capacitor, one end of the inductance and the controllable switch device it is defeated
Enter end be connected with each other, the other end of the inductance, one end of the 5th capacitor, the 6th capacitor one end and the described 7th
One end of resistance is connected with each other, and the other end of the inductance connects as the output end of the output circuit and the lighting source
It connects, the other end of the 7th resistance is connect with one end of the 7th capacitor, the other end of the 4th capacitor, two pole
The other end of positive, described 5th capacitor and the other end of the 6th capacitor of pipe are grounded.
Optionally, the fixation lamp drive circuit includes first capacitor, the second capacitor, third capacitor, the 4th capacitor and line
Property voltage-stablizer；
One end of the first capacitor, one end of second capacitor, the first end of the linear voltage regulator and third end
It is connected with each other, the 4th end of the linear voltage regulator, one end of the third capacitor are mutually interconnected with one end of the 4th capacitor
It connects, the other end of the first capacitor, the other end of second capacitor, the second end of the linear voltage regulator, the third
The other end of the other end of capacitor and the 4th capacitor is grounded.
Optionally, the lighting source can be LED light.
Optionally, the lighting source is mounted on light source circuit board, and the light source circuit board is aluminum substrate, the illumination
Light source is connect by the light source circuit board with the light source driving circuit.
It optionally, further include the power switch and power supply indicator connected to power supply；
Whether the power switch powers to each electrical equipment for controlling the power supply；
The power supply indicator, for prompting whether the power supply powers.
It optionally, further include the fixation lamp being connect with the fixation lamp drive circuit.
Optionally, the fixation lamp drive circuit and the light source driving circuit are mounted in control circuit board, the control
Circuit board processed is mounted on tray interior.
The invention also discloses a kind of slit-lamp microscopes, including crack lamp illuminance as the aforementioned to adjust circuit.
In the present invention, crack lamp illuminance adjusts circuit, comprising: fixation lamp drive circuit, light source driving circuit, potentiometer
And lighting source；Fixation lamp drive circuit is connect with light source driving circuit and potentiometer respectively, potentiometer and light source driving circuit
Connection, light source driving circuit are connect with lighting source；Light source driving circuit includes light source driving circuit, power supply input circuit, control
System adjusts circuit and output circuit；Power supply input circuit includes controllable switch device, the 5th resistance and the 6th resistance, is controlled to adjust
Circuit includes 3rd resistor and the second capacitor；The first of 5th resistance and the 6th resistor coupled in parallel, the 5th resistance and the 6th resistance is public
End connects to power supply altogether, the CSN pin connection of the second common end and light source driving circuit of the 5th resistance and the 6th resistance, and the 5th
Resistance and the 6th resistance are identical；The output end of controllable switch device and the CSN pin of light source driving circuit connect, and controllably open
The PGATE pin of the control terminal and light source driving circuit of closing device connects, and the input terminal and output circuit of controllable switch device connect
It connects；3rd resistor is connected between the output end of output circuit and the COFF pin of light source driving circuit, and the second capacitor is connected on
The COFF pin of light source driving circuit and the ground terminal of light source driving circuit；Wherein, pass through the 5th resistance of setting and the 6th resistance
Resistance value, set the maximum output current value of light source driving circuit, set the resistance value of 3rd resistor and the electricity of the second capacitor
Capacitance sets the switching frequency of light source driving circuit, drives core according to the maximum output current value and light source of light source driving circuit
The switching frequency of piece sets the upper and lower bound of the intensity of illumination of lighting source.
The present invention utilizes the 5th resistance and the 6th electricity connected at the CSN pin of light source driving circuit in light source driving circuit
Resistance can set the maximum output current value of light source driving circuit, pass through by setting the resistance value of the 5th resistance and the 6th resistance
The 3rd resistor of the COFF pin connection of light source driving circuit and the capacitance of resistance value and the second capacitor are set, light can be set
The switching frequency of source drive chip, thus according to the maximum output current value of light source driving circuit and the switch of light source driving circuit
Frequency obtains the upper and lower bound of the intensity of illumination of broader lighting source, recycles potentiometer control light source driving circuit
The voltage of IADJ pin realizes the adjusting to intensity of illumination, light source driving circuit is enable to drive lighting source in broader light
Change according to intensity interval.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the light source driving circuit topological diagram that a kind of crack lamp illuminance disclosed by the embodiments of the present invention adjusts circuit；
Fig. 2 is the structural schematic diagram that a kind of crack lamp illuminance disclosed by the embodiments of the present invention adjusts circuit；
Fig. 3 is the fixation lamp drive circuit topology that a kind of crack lamp illuminance disclosed by the embodiments of the present invention adjusts circuit
Figure；
Fig. 4 is a kind of structural schematic diagram of potentiometer terminal disclosed by the embodiments of the present invention；
Fig. 5 is a kind of power supply adaptor structural schematic diagram disclosed by the embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of crack lamp illuminances to adjust circuit, referring to figure 1 and figure 2, the circuit packet
It includes: fixation lamp drive circuit 1, light source driving circuit 2, potentiometer 3 and lighting source 4；
Fixation lamp drive circuit 1 is connect with light source driving circuit 2 and potentiometer 3 respectively, potentiometer 3 and light source driving circuit
2 connections, light source driving circuit 2 are connect with lighting source 4；
Light source driving circuit 2 includes light source driving circuit U1, power supply input circuit 21, controls to adjust circuit 22 and output electricity
Road 23；Power supply input circuit 21 includes controllable switch device Q1, the 5th resistance R5 and the 6th resistance R6, controls to adjust circuit 22 and wraps
Include 3rd resistor R3 and the second capacitor C2；
The IADJ pin of light source driving circuit U1 is connect with the variable resistance output terminal of potentiometer 3, and potentiometer 3 can be changed
Resistance input terminal is connect with the output end of fixation lamp drive circuit 1；
5th resistance R5 and the 6th resistance R6 are in parallel, and the first common end and power supply of the 5th resistance R5 and the 6th resistance R6 connect
It connects, the 5th resistance R5 and the second common end of the 6th resistance R6 and the CSN pin of light source driving circuit U1 are connect, the 5th resistance R5
It is identical with the 6th resistance R6 resistance value；
The output end of controllable switch device Q1 is connect with the CSN pin of light source driving circuit U1, controllable switch device Q1's
Control terminal is connect with the PGATE pin of light source driving circuit U1, and the input terminal of controllable switch device Q1 is connect with output circuit 23；
3rd resistor R3 is connected between the output end of output circuit 23 and the COFF pin of light source driving circuit U1, and second
Capacitor C2 is connected on the COFF pin of light source driving circuit U1 and the ground terminal of light source driving circuit U1.
Specifically, light source driving circuit U1 passes through the 5th resistance R5 of setting and the 6th resistance using after connection type as above
The resistance value of R6 can set the maximum output current value of light source driving circuit 2, by the resistance value and for setting 3rd resistor R3
The capacitance of two capacitor C2 can set the switching frequency of light source driving circuit U1, and then according to the maximum of light source driving circuit 2
The switching frequency of output current value and light source driving circuit U1, the output voltage and output electric current for obtaining light source driving circuit U1 are more
Wide bound to realize the upper and lower bound of the setting broader intensity of illumination of lighting source 4, then is cooperatively connected and drives in light source
Potentiometer 3 between the IADJ pin (adjustable voltage pin) and the output end of fixation lamp drive circuit 1 of dynamic chip U1, changes and shines
The intensity of illumination in Mingguang City source 4.
Specifically, shown in Figure 4, fixation lamp drive circuit 1, potentiometer 3 and light source driving circuit U1 are connected in series, Gu
The variable resistance input terminal J1-1 for first passing through potentiometer 3 depending on lamp drive circuit 1 powers to potentiometer 3, and potentiometer 3 passes through again can
Power transformation hinders the IADJ pin of output terminal J1-2 connection light source driving circuit U1, by adjusting be connected on potentiometer 3 can power transformation
Adjustable rheostatic resistance value between output terminal J1-2 and variable resistance ground terminal J1-3 is hindered, to from variable resistance input terminal
The voltage of J1-1 input is divided, to adjust the voltage of variable resistance output terminal J1-2 output, is realized to being output to
The regulating and controlling voltage of IADJ pin, and then change the output voltage and output electric current of light source driving circuit U1, to realize control
The change of 4 intensity of illumination of Mingguang City source.
It is understood that the variation range of 4 intensity of illumination of lighting source is according to the 5th resistance R5, the 6th resistance
The upper and lower bound of the intensity of illumination of R6,3rd resistor R3 and the lighting source 4 of the second capacitor C2 setting, for example, intensity of illumination
The upper limit be 214500LX, the lower limit of intensity of illumination is 500LX, and 500LX to 214500LX range may be implemented by potentiometer 3
Intensity of illumination adjust；Wherein, light source driving circuit U1 can be LM3409 chip, and lighting source 4 can be LED light, controllably
Switching device Q1 can manage for P-MOS.
As it can be seen that the embodiment of the present invention utilizes the connected at the CSN pin of light source driving circuit U1 in light source driving circuit 2
Five resistance R5 and the 6th resistance R6 can set light source driving electricity by setting the resistance value of the 5th resistance R5 and the 6th resistance R6
The maximum output current value on road 2, the 3rd resistor R3 and resistance value of the COFF pin connection by setting light source driving circuit U1
With the capacitance of the second capacitor C2, the switching frequency of light source driving circuit U1 can be set, thus according to light source driving circuit 2
The switching frequency of maximum output current value and light source driving circuit U1 obtains the upper limit of the intensity of illumination of broader lighting source 4
And lower limit, it recycles potentiometer 3 to control the voltage of the IADJ pin of light source driving circuit U1, realizes the adjusting to intensity of illumination,
Enable light source driving circuit 2 that lighting source 4 to be driven to change in broader intensity of illumination section.
The embodiment of the invention discloses a kind of specific crack lamp illuminances to adjust circuit, relative to a upper embodiment, originally
Embodiment has made further instruction and optimization to technical solution.Referring to figs. 1 to 5, specific:
In the prior art, lighting source 4 can not be closed individually, for example, when only needing the scene using fixation lamp, it is still necessary to
Lighting source 4 is opened, energy waste is caused, for this purpose, the EN pin (enabled pin) of light source driving circuit U1 and opening for potentiometer 3
Output terminal connection is closed, power supply is connect with the Switch input terminal J1-4 of potentiometer 3；The Switch input terminal J1-4 of potentiometer 3
It is connected with on-off pin between Switch output terminal J1-5, passes through control switch input terminal J1-4 and Switch output terminal
On-off pin closing or opening between J1-5 works as control so that whether the EN pin for controlling light source driving circuit U1 can obtain electric
Potentiometer 3 processed closes the switch, and the EN pin voltage of light source driving circuit U1 is supply voltage, and light source driving circuit U1 works,
Lighting source 4 is driven to work, when the switch of controlling potential device 3 disconnects, the EN pin voltage of light source driving circuit U1 is become zero, light
Source drive chip U1 does not work, and lighting source 4 extinguishes；The switch of lighting source 4 is individually controlled by the realization of potentiometer 3.
Further, shown in Figure 1, above-mentioned light source driving circuit 2 can specifically include the electricity of third capacitor C3 and the 4th
Hinder R4；
The VCC pin of light source driving circuit U1 is connect with one end of third capacitor C3, the other end of third capacitor C3, the 4th
One end of resistance R4 and the CSP pin of light source driving circuit U1 are connected with each other；
Power supply input circuit includes the 8th resistance R8, the 8th capacitor C8 and the 9th capacitor C9；
The VIN pin of light source driving circuit U1 is connect with one end of the 8th resistance R8, one end of the 8th resistance R8, the 8th electricity
The one end and one end of the 9th capacitor C9 for holding C8 connect to power supply, and the other end of the 8th capacitor C8 is another with the 9th capacitor C9's
End is grounded；
Controlling to adjust circuit includes first resistor R1, second resistance R2 and first capacitor C1；
The other end of 4th resistance R4, one end of second resistance R2 are mutually interconnected with the UVLO pin of light source driving circuit U1
Connect, the other end of second resistance R2, one end of first capacitor C1, first resistor R1 one end be grounded, first resistor R1's is another
One end is connected with the EN pin of light source driving circuit U1, the other end of first capacitor C1 and the IADJ pin of light source driving circuit U1
It is connected；
Output circuit includes the 7th resistance R7, inductance L1, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th electricity
Hold C7 and diode D1；
The cathode of diode D1, one end of the 4th capacitor C4, one end of inductance L1 and controllable switch device Q1 input terminal
It is connected with each other, the other end of inductance L1, one end of the 5th capacitor C5, one end of the 6th capacitor C6 and one end phase of the 7th resistance R7
Connect, the other end of inductance L1 is connect as the output end of output circuit with lighting source, the other end of the 7th resistance R7 with
One end of 7th capacitor C7 connects, the other end of the 4th capacitor C4, the anode of diode D1, the other end of the 5th capacitor C5 and the
The other end of six capacitor C6 is grounded.Further, shown in Figure 3, above-mentioned fixation lamp drive circuit 1 can specifically include
One capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4 and linear voltage regulator U2；One end of first capacitor C1, second
One end of capacitor C2, the first end of linear voltage regulator U2 and third end are connected with each other, the 4th end of linear voltage regulator U2, third electricity
One end of one end and the 4th capacitor C4 for holding C3 is connected with each other, the other end, the line of the other end of first capacitor C1, the second capacitor C2
Second end, the other end of third capacitor C3 and the other end of the 4th capacitor C4 of property voltage-stablizer U2 is grounded, wherein linear voltage stabilization
The 5th end of device U2 is hanging.
Specifically, lighting source 4 may be mounted on light source circuit board 5, due to the huge light source electricity of 4 calorific value of lighting source
Road plate 5 can be aluminum substrate, accelerate radiating rate, and lighting source 4 is connect by light source circuit board 5 with light source driving circuit 2.
It is understood that fixation lamp drive circuit 1 is the ADIJ pin of the light source driving circuit U1 of light source driving circuit 2
Power supply, shown in Figure 4, the output end of fixation lamp drive circuit 1 also passes through the fixation lamp power supply terminal J1-6 of potentiometer 3 and consolidates
It is connected depending on 6 input terminal of lamp, the ground terminal of fixation lamp 6 is connect with the fixation lamp ground terminal J1-7 of potentiometer 3, passes through potentiometer 3
Fixation lamp drive circuit 1 powers to fixation lamp 6.
Specifically, fixation lamp drive circuit 1 and light source driving circuit 2 may be mounted in control circuit board 7, control circuit
Plate 7 is mounted on inside box body 8, and box body 8 is for protecting control circuit board 7.
Wherein, power supply can pass through the power input interface 10 of box body 8 and the confession of control circuit board 7 by power supply adaptor 9
Electric line connection.
Specifically, had been turned on for the prompt current slit-lamp power supply of user, meanwhile, it, can be with for individually control power supply power supply
The power switch S1 and power supply indicator X1 connected to power supply is set；Power switch S1, for controlling power supply to each electrical equipment
Whether power, power switch S1 is connected between power supply and control circuit board 7, therefore, can be real by switch S1
Now control power supply is to each power supply for electrical equipment；Power supply indicator X1, for prompting whether power supply powers, when power switch S1 is closed
Afterwards, if power supply works normally, power supply indicator X1 will be lighted to prompt power supply to work normally, if power failure, power supply
Indicator light X1 will not be lighted, and show power failure, facilitate malfunction elimination, for example, lighting source 4 is not after closure power switch S1
It is bright, and power supply indicator X1 is lighted, then shows that power supply works normally, a certain circuit malfunctions relevant to lighting source 4；If
After being closed power switch S1, power supply indicator X1 does not work, then shows power failure.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Circuit is adjusted to a kind of crack lamp illuminance provided by the present invention above to be described in detail, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention；At the same time, for those skilled in the art is having according to the thought of the present invention
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention
Limitation.
Claims (10)
1. a kind of crack lamp illuminance adjusts circuit characterized by comprising fixation lamp drive circuit, light source driving circuit, electricity
Position device and lighting source；
The fixation lamp drive circuit is connect with the light source driving circuit and the potentiometer respectively, the potentiometer with it is described
Light source driving circuit connection, the light source driving circuit are connect with the lighting source；
The light source driving circuit includes light source driving circuit, power supply input circuit, controls to adjust circuit and output circuit；It is described
Power supply input circuit includes controllable switch device, the 5th resistance and the 6th resistance, and the control and regulation circuit includes 3rd resistor
With the second capacitor；
The IADJ pin of the light source driving circuit is connect with the variable resistance output terminal of the potentiometer, the potentiometer
Variable resistance input terminal is connect with the output end of the fixation lamp drive circuit；
First common end of the 5th resistance and the 6th resistor coupled in parallel, the 5th resistance and the 6th resistance and electricity
Second common end of source connection, the 5th resistance and the 6th resistance is connect with the CSN pin of the light source driving circuit,
5th resistance is identical with the 6th resistance；
The output end of the controllable switch device is connect with the CSN pin of the light source driving circuit, the controllable switch device
Control terminal connect with the PGATE pin of the light source driving circuit, the input terminal of the controllable switch device and the output
Circuit connection；
The 3rd resistor is connected between the output end of the output circuit and the COFF pin of the light source driving circuit, institute
It states the second capacitor and is connected on the COFF pin of the light source driving circuit and the ground terminal of the light source driving circuit；
Wherein, by setting the resistance value of the 5th resistance and the 6th resistance, the light source driving circuit is set most
Big output current value sets the resistance value of the 3rd resistor and the capacitance of second capacitor, sets the light source driving
The switching frequency of chip, according to the switch of the maximum output current value of the light source driving circuit and light source driving circuit frequency
Rate sets the upper and lower bound of the intensity of illumination of the lighting source.
2. crack lamp illuminance according to claim 1 adjusts circuit, which is characterized in that the EN of the light source driving circuit
Pin is connect with the Switch output terminal of the potentiometer, and the power supply is connect with the Switch input terminal of the potentiometer.
3. crack lamp illuminance according to claim 2 adjusts circuit, which is characterized in that the light source driving circuit includes
Third capacitor and the 4th resistance；
The VCC pin of the light source driving circuit is connect with one end of the third capacitor, the other end of the third capacitor, institute
The CSP pin of one end and the light source driving circuit for stating the 4th resistance is connected with each other；
The power supply input circuit includes the 8th resistance, the 8th capacitor and the 9th capacitor；
The VIN pin of the light source driving circuit is connect with one end of the 8th resistance, one end of the 8th resistance, described
One end of 8th capacitor and one end of the 9th capacitor connect to power supply, the other end and the described 9th of the 8th capacitor
The other end of capacitor is grounded；
The control and regulation circuit includes first resistor, second resistance and first capacitor；
The other end of 4th resistance, one end of the second resistance are mutually interconnected with the UVLO pin of the light source driving circuit
Connect, the other end of the second resistance, one end of the first capacitor, the first resistor one end be grounded, described first
The other end of resistance is connected with the EN pin of the light source driving circuit, and the other end of the first capacitor and the light source drive
The IADJ pin of chip is connected；
The output circuit includes the 7th resistance, inductance, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor and two poles
Pipe；
The cathode of the diode, one end of the 4th capacitor, one end of the inductance and the controllable switch device input terminal
It is connected with each other, the other end of the inductance, one end of the 5th capacitor, one end of the 6th capacitor and the 7th resistance
One end be connected with each other, the other end of the inductance connect as the output end of the output circuit with the lighting source, institute
The other end for stating the 7th resistance is connect with one end of the 7th capacitor, the other end of the 4th capacitor, the diode
The other end of positive, described 5th capacitor and the other end of the 6th capacitor are grounded.
4. crack lamp illuminance according to claim 3 adjusts circuit, which is characterized in that the fixation lamp drive circuit packet
Include first capacitor, the second capacitor, third capacitor, the 4th capacitor and linear voltage regulator；
One end of the first capacitor, one end of second capacitor, the first end of the linear voltage regulator and third end are mutual
One end of connection, the 4th end of the linear voltage regulator, one end of the third capacitor and the 4th capacitor is connected with each other, institute
State the other end of first capacitor, the other end of second capacitor, the second end of the linear voltage regulator, the third capacitor
The other end of the other end and the 4th capacitor is grounded.
5. crack lamp illuminance according to claim 4 adjusts circuit, which is characterized in that the lighting source can be
LED light.
6. crack lamp illuminance according to claim 5 adjusts circuit, which is characterized in that the lighting source is mounted on light
On source circuit plate, the light source circuit board is aluminum substrate, and the lighting source is driven by the light source circuit board and the light source
Dynamic circuit connection.
7. crack lamp illuminance according to claim 6 adjusts circuit, which is characterized in that further include the electricity connected to power supply
Source switch and power supply indicator；
Whether the power switch powers to each electrical equipment for controlling the power supply；
The power supply indicator, for prompting whether the power supply powers.
8. crack lamp illuminance according to claim 7 adjusts circuit, which is characterized in that further include being driven with the fixation lamp
The fixation lamp of dynamic circuit connection.
9. crack lamp illuminance according to claim 8 adjusts circuit, which is characterized in that the fixation lamp drive circuit and
The light source driving circuit is mounted in control circuit board, and the control circuit board is mounted on tray interior.
10. a kind of slit-lamp microscope, which is characterized in that including crack lamp illuminance as described in any one of claim 1 to 9
Adjust circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623335.3A CN109661067B (en) | 2018-12-28 | 2018-12-28 | Slit lamp light illumination adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623335.3A CN109661067B (en) | 2018-12-28 | 2018-12-28 | Slit lamp light illumination adjusting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109661067A true CN109661067A (en) | 2019-04-19 |
| CN109661067B CN109661067B (en) | 2021-04-13 |
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ID=66118124
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811623335.3A Active CN109661067B (en) | 2018-12-28 | 2018-12-28 | Slit lamp light illumination adjusting circuit |
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| Country | Link |
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| CN (1) | CN109661067B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825277A (en) * | 2021-08-20 | 2021-12-21 | 李俊辉 | LED vegetation lamp control circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010038439A1 (en) * | 1998-10-20 | 2001-11-08 | Doherty Victor J. | Hand-held Ophthalmic illuminator |
| CN101846581A (en) * | 2010-04-20 | 2010-09-29 | 华东交通大学 | LED light source stability detector based on PLC control and detection method thereof |
| CN105636288A (en) * | 2014-10-28 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Automobile LED illumination driving system |
| CN206057843U (en) * | 2016-09-13 | 2017-03-29 | 西安科技大学 | The internet intelligent house control system communicated with WIFI based on bluetooth |
| CN206136390U (en) * | 2016-10-17 | 2017-04-26 | 上海新眼光医疗器械股份有限公司 | A light source drive circuit for slit lamp |
-
2018
- 2018-12-28 CN CN201811623335.3A patent/CN109661067B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010038439A1 (en) * | 1998-10-20 | 2001-11-08 | Doherty Victor J. | Hand-held Ophthalmic illuminator |
| CN101846581A (en) * | 2010-04-20 | 2010-09-29 | 华东交通大学 | LED light source stability detector based on PLC control and detection method thereof |
| CN105636288A (en) * | 2014-10-28 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Automobile LED illumination driving system |
| CN206057843U (en) * | 2016-09-13 | 2017-03-29 | 西安科技大学 | The internet intelligent house control system communicated with WIFI based on bluetooth |
| CN206136390U (en) * | 2016-10-17 | 2017-04-26 | 上海新眼光医疗器械股份有限公司 | A light source drive circuit for slit lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825277A (en) * | 2021-08-20 | 2021-12-21 | 李俊辉 | LED vegetation lamp control circuit |
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| Publication number | Publication date |
|---|---|
| CN109661067B (en) | 2021-04-13 |
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