CN206930818U - A kind of motorized zoom lenses temperature compensation means - Google Patents
A kind of motorized zoom lenses temperature compensation means Download PDFInfo
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- CN206930818U CN206930818U CN201720726274.8U CN201720726274U CN206930818U CN 206930818 U CN206930818 U CN 206930818U CN 201720726274 U CN201720726274 U CN 201720726274U CN 206930818 U CN206930818 U CN 206930818U
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Abstract
The utility model discloses a kind of motorized zoom lenses temperature compensation means, including：Detect the temperature sensor of motorized zoom lenses operating temperature；Detect the zoom position detector of motorized zoom lenses zoom position；Adjust the motor of motorized zoom lenses focal length；The memory of data storage；Also include：Microprocessor；Temperature sensor, zoom position detector, motor, memory are connected with microprocessor respectively；The zoom position information for temperature information and zoom position the detector detection that the microprocessor detects according to temperature sensor, the rear burnt position of motorized zoom lenses is adjusted by motor.The utility model solves the image quality compromises caused by temperature change using the device of simple, automatic compensation camera lens.
Description
Technical field
Motorized zoom lenses field is the utility model is related to, specifically provided with a kind of motorized zoom lenses temperature compensation means.
Background technology
As domestic public safety is more and more employed to the wilderness demand of equipment, remote monitor, and there is quickening
Paces.Most important in remote monitor is exactly motorized zoom lenses, as remote monitor project is more and more, largely
Motorized zoom lenses put into monitoring trade.Because the working environment of motorized zoom lenses varies, operating temperature
Can be different, especially in northern area, temperature change is very big throughout the year.But most power zooms currently on the market
Camera adjusting is well rear defocused, and with the change of temperature, the refractive index of camera lens can change, and lens structure part expands with heat and contract with cold
It can change, ultimately resulting in the image quality of camera lens can decline, therefore find a kind of device right and wrong for effectively solving the problem
Often it is necessary.
The content of the invention
To solve the above problems, the utility model provides a kind of motorized zoom lenses temperature compensation means, for compensating glass
The change of head image quality caused by temperature change.
The technical solution of the utility model is：A kind of motorized zoom lenses temperature compensation means, including：
Detect the temperature sensor of motorized zoom lenses operating temperature；
Detect the zoom position detector of motorized zoom lenses zoom position；
The motor of burnt position after regulation motorized zoom lenses；
The memory of data storage；
Also include：Microprocessor；The temperature sensor, zoom position detector, motor, memory respectively with microprocessor
Device connects；The zoom position for temperature information and zoom position the detector detection that the microprocessor detects according to temperature sensor
Information, the rear burnt position of motorized zoom lenses is adjusted by motor.
Further, the temperature sensor is thermistor (temperature) sensor.
Further, temperature modulate circuit and A/D conversion electricity are additionally provided between the temperature sensor and microprocessor
Road, temperature sensor are connected with temperature modulate circuit, and temperature modulate circuit is connected by A/D change-over circuits with microprocessor.
Further, temperature sensor includes thermistor Rt；The temperature modulate circuit includes：Constant current source chip U1,
Operational amplifier LM324, voltage amplification chip U3, resistance R1-R3, swept resistance Rp；
Constant current source chip U1 1 pin and 7 pins is connected by resistance R1, and constant current source chip U1 2 pins and 8 pins connect
Connect voltage source, constant current source chip U1 3 pins and 4 pins ground connection, constant current source chip U1 5 pin concatenation operation amplifiers
LM324 1 pin, constant current source chip U1 6 pins connect operational amplifier LM324 3 pins, operational amplifier by resistance R2
LM324 2 pins and 5 pin short circuits, operational amplifier LM324 4 pins connect voltage source, resistance R2 and operational amplifier
The 3 of voltage amplification chip U3 is connected after thermistor Rt, swept resistance Rp that node between LM324 3 pin passes through series connection to draw
Pin, voltage amplification chip U3 2 pins connect the node between resistance R2 and operational amplifier LM324 3 pin, voltage amplification core
Piece U3 8 pins connect voltage source, and voltage amplification chip U3 1 pin and 7 pins are connected by resistance R3, voltage amplification chip U3
4 pins and 5 pins ground connection, voltage amplification chip U3 6 pins access A/D change-over circuits.
Further, the display screen of display motorized zoom lenses operating temperature is included, display screen is connected with microprocessor.
Further, the microprocessor is AT89C2051 single-chip microcomputers.
Motorized zoom lenses temperature compensation means provided by the utility model, microprocessor obtain electricity using temperature sensor
Environment temperature during dynamic zoom lens work, the zoom position information of motorized zoom lenses is obtained using zoom position detector,
And burnt position after motorized zoom lenses when detecting the temperature stored in memory, the focal length, then adjusted by motor electronic
Burnt position reaches camera CCD positions after zoom lens makes motorized zoom lenses.The present apparatus utilizes simple, automatic compensation camera lens
Method solves the image quality compromises caused by temperature change.
Brief description of the drawings
Fig. 1 is the utility model specific embodiment circuit block diagram.
Fig. 2 is the utility model specific embodiment temperature modulate circuit schematic diagram.
Fig. 3 is optical system schematic diagram before and after the regulation of the utility model specific embodiment motorized zoom lenses.
In figure, 1- motorized zoom lenses, burnt position after 2- motorized zoom lenses, 3- motorized zoom lenses back focal length, 4-
CCD positions, 5- temperature sensors, 6- temperature modulate circuits, 7-A/D change-over circuits, 8- zoom position detectors, 9- motors, 10-
Microprocessor, 11- memories.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is elaborated by specific embodiment, and following examples are to this
The explanation of utility model, and the utility model is not limited to implementation below.
As shown in figure 1, the motorized zoom lenses temperature compensation means that the present embodiment provides, including：Detect power zoom mirror
The temperature sensor 5 of first 1 operating temperature, detects the zoom position detector 8 of the zoom position of motorized zoom lenses 1, and regulation is electronic
The motor 9 of the focal length of zoom lens 1, the memory 11 and microprocessor 10 of data storage.Temperature sensor 5, zoom position detection
Device 8, motor 9, memory 11 are connected with microprocessor 10 respectively, and the temperature that microprocessor 10 detects according to temperature sensor 5 is believed
The zoom position information that breath and zoom position detector 8 detect, the rear burnt position of motorized zoom lenses 1 is adjusted by motor 9.
In the present embodiment, AT89C2051 single-chip microcomputers can be selected in microprocessor 10.Thermistor can be selected in temperature sensor 5
Sensor, is additionally provided with temperature modulate circuit 6 and A/D change-over circuits 7 between temperature sensor 5 and microprocessor 10, temperature passes
Sensor 5 is connected with temperature modulate circuit 6, and temperature modulate circuit 6 is connected by A/D change-over circuits 7 with microprocessor 10.Temperature is adjusted
Reason circuit 6 is used to eliminate measurement error, improves temperature detection accuracy.
As shown in Fig. 2 temperature sensor 5 includes thermistor Rt, temperature modulate circuit 6 includes：Constant current source chip U1, fortune
Calculate amplifier LM324, voltage amplification chip U3, resistance R1-R3, swept resistance Rp.
Constant current source chip U1 1 pin and 7 pins is connected by resistance R1, and constant current source chip U1 2 pins and 8 pins connect
Connect voltage source, constant current source chip U1 3 pins and 4 pins ground connection, constant current source chip U1 5 pin concatenation operation amplifiers
LM324 1 pin, constant current source chip U1 6 pins connect operational amplifier LM324 3 pins, operational amplifier by resistance R2
LM324 2 pins and 5 pin short circuits, operational amplifier LM324 4 pins connect voltage source, resistance R2 and operational amplifier
The 3 of voltage amplification chip U3 is connected after thermistor Rt, swept resistance Rp that node between LM324 3 pin passes through series connection to draw
Pin, voltage amplification chip U3 2 pins connect the node between resistance R2 and operational amplifier LM324 3 pin, voltage amplification core
Piece U3 8 pins connect voltage source, and voltage amplification chip U3 1 pin and 7 pins are connected by resistance R3, voltage amplification chip U3
4 pins and 5 pins ground connection, voltage amplification chip U3 6 pins access A/D change-over circuits 7.
Constant current source chip U1 output accesses thermistor Rt one end and operational amplifier by a current-limiting resistance R2
LM324 in-phase input end, by operational amplifier LM324 inverting input and output end short circuit, and ground is connected to, makes resistance
The voltage constant at R2 both ends is supply voltage, and produces a constant electric current and pass through thermistor Rt.When resistance R2 resistance
After it is determined that, the current value of constant-current source also determines therewith.Constant-current source is accessed into voltage amplification by voltage caused by thermistor Rt
Chip U3, then the voltage after amplification is sent into A/D change-over circuits 7, become digital value, so as to measure motorized zoom lenses 1
Operating temperature.In the present embodiment, constant current source chip U1 can use AD620-1 chips, and voltage amplification chip U3 can be used
AD620-2 chips, temperature stability is high, the linearity is good.
As shown in figure 3, when upper figure is certain temperature, in the case of regulating focal length, motorized zoom lenses 1 the temperature, should
Optical system diagram during focal length, now the CCD of video camera can be fixed on burnt position 2 after motorized zoom lenses, motorized zoom lenses
Burnt position 2 overlaps with CCD positions 4 afterwards.During video camera use, when the temperature decreases, the refractive index rise of eyeglass, eyeglass
Expanding with heat and contract with cold for structural member can also change, and ultimately result in motorized zoom lenses back focal length 3 and shorten, and cause among in Fig. 3
Burnt position 2 no longer overlaps with CCD positions 4 after the state of figure, i.e. motorized zoom lenses so that image quality declines.The present embodiment
The device of offer is exactly the operating temperature and focal length that microprocessor 10 constantly gathers motorized zoom lenses 1（Motorized zoom lenses 1
Also there is relation burnt position with its focal length afterwards, it is therefore desirable to detects its focal length, i.e. zoom position information）, when the temperature decreases, micro- place
Reason device 10 can find out burnt position 2 after motorized zoom lenses under this temperature and focal length, so as to control motorized zoom lenses 1 to
The direction of CCD positions 4 is moved, and burnt position 2 overlaps with CCD positions 4 after finally causing motorized zoom lenses, reaches figure below in Fig. 3
Effect, so as to ensure that the image quality of motorized zoom lenses 1.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (5)
- A kind of 1. motorized zoom lenses temperature compensation means, it is characterised in that including：Detect the temperature sensor of motorized zoom lenses operating temperature；Detect the zoom position detector of motorized zoom lenses zoom position；The motor of burnt position after regulation motorized zoom lenses；The memory of data storage；Also include：Microprocessor；The temperature sensor, zoom position detector, motor, memory connect with microprocessor respectively Connect；The zoom position letter for temperature information and zoom position the detector detection that the microprocessor detects according to temperature sensor Breath, the rear burnt position of motorized zoom lenses is adjusted by motor.
- 2. motorized zoom lenses temperature compensation means according to claim 1, it is characterised in that the temperature sensor is Thermistor (temperature) sensor.
- 3. motorized zoom lenses temperature compensation means according to claim 2, it is characterised in that the temperature sensor with Temperature modulate circuit and A/D change-over circuits are additionally provided between microprocessor, temperature sensor is connected with temperature modulate circuit, temperature Degree modulate circuit is connected by A/D change-over circuits with microprocessor.
- 4. motorized zoom lenses temperature compensation means according to claim 3, it is characterised in that temperature sensor includes heat Quick resistance Rt；The temperature modulate circuit includes：Constant current source chip U1, operational amplifier LM324, voltage amplification chip U3, electricity Hinder R1-R3, swept resistance Rp；Constant current source chip U1 1 pin and 7 pins is connected by resistance R1, constant current source chip U1 2 pins and 8 pins connection electricity Potential source, constant current source chip U1 3 pins and 4 pins ground connection, the 1 of constant current source chip U1 5 pin concatenation operation amplifier LM324 Pin, constant current source chip U1 6 pins connect operational amplifier LM324 3 pins by resistance R2, and the 2 of operational amplifier LM324 Pin and 5 pin short circuits, operational amplifier LM324 4 pins connect voltage source, resistance R2 and operational amplifier LM324 3 pin it Between node pass through series connection thermistor Rt, swept resistance Rp after connect voltage amplification chip U3 3 pins, voltage amplification core Node between piece U3 2 pins connection resistance R2 and operational amplifier LM324 3 pin, voltage amplification chip U3 8 pins connect Voltage source, voltage amplification chip U3 1 pin and 7 pins are connected by resistance R3, and voltage amplification chip U3 4 pins and 5 draw Pin is grounded, voltage amplification chip U3 6 pins access A/D change-over circuits.
- 5. according to the motorized zoom lenses temperature compensation means described in claim any one of 1-4, it is characterised in that micro- place Reason device is AT89C2051 single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726274.8U CN206930818U (en) | 2017-06-21 | 2017-06-21 | A kind of motorized zoom lenses temperature compensation means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726274.8U CN206930818U (en) | 2017-06-21 | 2017-06-21 | A kind of motorized zoom lenses temperature compensation means |
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| Publication Number | Publication Date |
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| CN206930818U true CN206930818U (en) | 2018-01-26 |
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| CN201720726274.8U Active CN206930818U (en) | 2017-06-21 | 2017-06-21 | A kind of motorized zoom lenses temperature compensation means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800558A (en) * | 2019-04-09 | 2020-10-20 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
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2017
- 2017-06-21 CN CN201720726274.8U patent/CN206930818U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800558A (en) * | 2019-04-09 | 2020-10-20 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
| CN111800558B (en) * | 2019-04-09 | 2022-02-18 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 101111 608, building 2, Changyuan Tiandi building, No. 18, Suzhou street, Haidian District, Beijing Patentee after: Shandong hepuwei optoelectronics Co.,Ltd. Address before: 101111 608, building 2, Changyuan Tiandi building, No. 18, Suzhou street, Haidian District, Beijing Patentee before: HOPE WISH PHOTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |
Address after: 250000 room 524-7, floor 5, building 2, Jinan Supercomputing Center Science Park, No. 28666 jingshidong Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Hopewell optoelectronics Co.,Ltd. Address before: 101111 608, building 2, Changyuan Tiandi building, No. 18, Suzhou street, Haidian District, Beijing Patentee before: Shandong hepuwei optoelectronics Co.,Ltd. |