CN110248060A - A kind of method and camera module for preventing cam lens from hazing - Google Patents
A kind of method and camera module for preventing cam lens from hazing Download PDFInfo
- Publication number
- CN110248060A CN110248060A CN201910511604.5A CN201910511604A CN110248060A CN 110248060 A CN110248060 A CN 110248060A CN 201910511604 A CN201910511604 A CN 201910511604A CN 110248060 A CN110248060 A CN 110248060A
- Authority
- CN
- China
- Prior art keywords
- temperature
- value
- camera module
- lens
- camera
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
Abstract
The present invention relates to a kind of methods for preventing cam lens from hazing, second temperature value outside the first temperature value, humidity value and camera module including acquisition camera module internal environment at camera lens calculates the dew-point temperature of camera module internal environment according to the first temperature value and humidity value；When the difference between second temperature value and dew-point temperature is less than the first temperature threshold, lens wearer outside camera module is heated, to improve the second temperature value outside camera module at camera lens, prevents camera module from hazing at lens wearer；When second temperature value is more than or equal to the sum of dew-point temperature and second temperature threshold value, stop heating lens wearer outside camera module.The present invention can prevent camera module in long-time high humidity environment with ambient temperature bust and caused by haze phenomenon, influence camera module normal work.
Description
Technical field
The present invention relates to camera technical fields, more particularly to a kind of method and camera shooting for preventing cam lens from hazing
Head mould group.
Background technique
With the rapid development of the automotive industry, automobile popularity rate significantly improves, and vehicle security drive has become at this stage
Main popular focus.More and more automobiles are equipped with advanced DAS (Driver Assistant System) (ADAS) for improving drive safety
Can, camera module has more application in advanced DAS (Driver Assistant System) at present.Camera module is generally seal cavity, mesh
Be the protection level requirements even higher for IP67, and in actual use, camera module can satisfy water-stop and want
It asks, but due to sealing material (such as rubber) and sheathing material (such as plastic cement) respiration, camera module is unable to reach completely close
Gas is sealed, gas can enter inside cavity by the respiration of material.When ambient humidity is higher than camera module interior humidity
When, camera module internal relative humidity can improve, when phase of the long-time in the environment of high humility, inside camera module
Saturation can be reached to humidity, at this point, cooling down suddenly if encountering external environment locating for camera module, such as suddenly rain cats and dogs, is outdoor
Temperature rapid decrease etc., when keeping camera module internal-external temperature difference larger, the moisture inside camera module can be in ice-cold camera lens
Eyeglass goes out to form fog (or droplet), since gas exchange rate is minimum inside and outside camera module, fog (or water that inside is formed
Pearl) it can not dissipate in the short time, influence camera module normal use.
Summary of the invention
The present invention be overcome the shortcomings of to provide described in the above-mentioned prior art a kind of method for preventing cam lens from hazing and
Camera module.
In order to solve the above technical problems, technical scheme is as follows:
A method of it prevents cam lens from hazing, includes the following steps:
The first temperature value and humidity value of acquisition camera module internal environment, and taken the photograph according to the first temperature value and humidity value calculating
As the dew-point temperature of head module internal environment；
Second temperature value outside acquisition camera mould group at camera lens, and by between second temperature value and dew-point temperature difference with
First temperature threshold is compared, when the difference between second temperature value and dew-point temperature is less than the first temperature threshold, to taking the photograph
As lens wearer is heated outside head mould group, to improve the second temperature value outside camera module at camera lens；
Second temperature value and the sum of dew-point temperature and second temperature threshold value are compared, when second temperature value is more than or equal to dew point
When the sum of temperature and second temperature threshold value, stop heating lens wearer outside camera module.
It further, further include the rh value of acquisition camera module internal environment as optimal technical scheme, and
Rh value is compared with default humidity threshold, when rh value is greater than default humidity threshold, to camera mould
The external lens wearer of group is heated, to reduce the rh value inside camera module.
It further, further include when rh value is less than or equal to default humidity threshold, then as optimal technical scheme
Stop heating lens wearer outside camera module.
Further, as optimal technical scheme, the value range of first temperature threshold is 0 ~ 1 DEG C.
Further, as optimal technical scheme, the value range of the second temperature threshold value is 1 ~ 5 DEG C.
Further, as optimal technical scheme, the default humidity threshold value range is 80%-90%.
A kind of camera module for preventing cam lens from hazing, including camera, setting are in the casing of pick-up head body
The temperature and humidity acquisition module in portion, the heating device and temperature collecting module being arranged at cam lens；The heating device is in
Tubular structure is simultaneously set on the outside of the cam lens, is equipped on the heating device and is installed the temperature collecting module
Limiting slot.
Further, as optimal technical scheme, the material that the heating device is made is heatable thermo electric material；
The thermo electric material includes fever metal material, silicon-carbon heater element, silicon molybdenum heater element, ceramic heating plate, PI fever
Film, PTC heater, heating wire or conductive coating.
Further, it is connected as optimal technical scheme, the temperature collecting module and the cam lens.
Further, as optimal technical scheme, the temperature and humidity acquisition module includes Temperature Humidity Sensor, the temperature
Acquisition module includes temperature sensor.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
It is high for a long time can to prevent camera module for the method and camera module that prevent cam lens from hazing of the invention
In wet environment with ambient temperature bust and caused by haze phenomenon, influence camera module normal work；It can significantly improve and adopt
With the stability and reliability of the advanced DAS (Driver Assistant System) of the camera module, improve camera module sensor precision and
The reliability of software algorithm.
Detailed description of the invention
Fig. 1 is the method for the present invention flow chart of steps.
Fig. 2 is camera module cross-sectional view of the present invention.
Fig. 3 is camera module structure chart of the present invention.
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable；The same or similar label corresponds to same or similar
Component；The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention are more
It is easily readily appreciated by one skilled in the art, to make apparent define to protection scope of the present invention.
Embodiment 1
A method of prevent cam lens from hazing, as shown in Figure 1, including the following steps:
S10. the first temperature value, humidity value and the rh value of acquisition camera module internal environment, and according to the first temperature
Value and humidity value calculate the dew-point temperature of camera module internal environment.
This step specifically:
By the first temperature that the temperature and humidity acquisition module acquisition camera module internal environment inside camera module is arranged in
Value, humidity value and rh value；
Software algorithm built in camera module calculates the dew of camera module internal environment according to the first temperature value and humidity value
Point temperature.
S20. the second temperature value outside acquisition camera mould group at camera lens, and by second temperature value and dew-point temperature it
Between difference be compared with the first temperature threshold, when the difference between second temperature value and dew-point temperature is less than the first temperature threshold
When value, lens wearer outside camera module is heated, to improve the second temperature value outside camera module at camera lens.
This step specifically: by the way that the temperature collecting module acquisition camera mould at camera lens is arranged in outside camera module
Second temperature value at the external camera lens of group；
Difference between second temperature value and dew-point temperature is compared by software algorithm with the first temperature threshold, works as second temperature
When being worth the difference between dew-point temperature less than the first temperature threshold, the heating device outside starting camera at camera lens is to camera shooting
Lens wearer is heated outside head mould group, to improve the second temperature value outside camera module at camera lens.
Wherein, the first temperature threshold is positive value, and value range is set as 0 ~ 1 DEG C.
S30. second temperature value and the sum of dew-point temperature and second temperature threshold value are compared, when second temperature value is big
When being equal to the sum of dew-point temperature and second temperature threshold value, stop heating lens wearer outside camera module.
This step specifically:
Second temperature value and the sum of dew-point temperature dew-point temperature and second temperature threshold value are compared by software algorithm, when the second temperature
Angle value is more than or equal to the sum of dew-point temperature and second temperature threshold value, if so, stop to lens wearer outside camera module into
Otherwise row heating continues to heat lens wearer outside camera module, until second temperature value is more than or equal to dew point temperature
The sum of degree and second temperature threshold value, to prevent camera module from hazing at lens wearer.
This step further include: rh value is compared by software algorithm with default humidity threshold, judges relative humidity
Whether value is greater than default humidity threshold, if so, heating to lens wearer outside camera module, to reduce camera mould
Rh value inside group；Otherwise when second temperature value is more than or equal to the sum of dew-point temperature and second temperature threshold value, stop
Lens wearer outside camera module is heated.
Wherein, second temperature threshold value is positive value, and value range is set as 1 ~ 5 DEG C, and default humidity threshold value range is
80%-90%, it is preferred that second temperature threshold value value range is 3-4 DEG C, and default humidity threshold is set as 85% or 90%.
Embodiment 2
A kind of camera module for preventing cam lens from hazing, as Figure 2-3: including camera, being arranged in casing of pick-up head
The temperature and humidity acquisition module 4 in internal portion, the heating device 1 and temperature collecting module 2 being arranged at cam lens 3；Heating dress
It sets 1 to be cylindrical in shape structure and be set in 3 outside of cam lens, the limit of installation temperature collecting module 2 is equipped on heating device 1
Slot, temperature collecting module 2 are fixedly mounted in limiting slot and connect with cam lens 3.
In the present embodiment, the material that heating device 1 is made is heatable thermo electric material；Thermo electric material includes fever gold
Belong to material, silicon-carbon heater element, silicon molybdenum heater element, ceramic heating plate, PI heating film, PTC heater, heating wire or conductive painting
Material etc., temperature and humidity acquisition module 4 include Temperature Humidity Sensor, and temperature collecting module 2 includes temperature sensor.
Camera module of the invention, by the heating device being arranged at camera lens outside camera module, thus according to
The second temperature outside the first temperature value, humidity value and rh value and camera module inside camera module at camera lens
Angle value judges whether lens wearer needs to heat outside camera module, to prevent camera module in long-time high humidity environment
In with ambient temperature bust and caused by haze phenomenon, influence camera module normal work；It can significantly improve and be taken the photograph using this
As the stability and reliability of the advanced DAS (Driver Assistant System) of head mould group, the precision and software for improving camera module sensor are calculated
The reliability of method.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of method for preventing cam lens from hazing, which comprises the steps of:
The first temperature value and humidity value of acquisition camera module internal environment, and taken the photograph according to the first temperature value and humidity value calculating
As the dew-point temperature of head module internal environment；
Second temperature value outside acquisition camera mould group at camera lens, and by between second temperature value and dew-point temperature difference with
First temperature threshold is compared, when the difference between second temperature value and dew-point temperature is less than the first temperature threshold, to taking the photograph
As lens wearer is heated outside head mould group, to improve the second temperature value outside camera module at camera lens；
Second temperature value and the sum of dew-point temperature and second temperature threshold value are compared, when second temperature value is more than or equal to dew point
When the sum of temperature and second temperature threshold value, stop heating lens wearer outside camera module.
2. according to claim 1 prevent the method that cam lens haze, which is characterized in that further include acquisition camera
The rh value of module internal environment, and rh value is compared with default humidity threshold, when rh value is big
When default humidity threshold, lens wearer outside camera module is heated, it is opposite inside camera module to reduce
Humidity value.
3. according to claim 2 prevent the method that cam lens haze, which is characterized in that further include working as relative humidity
When value is less than or equal to default humidity threshold, then stop heating lens wearer outside camera module.
4. according to claim 1 prevent the method that cam lens haze, which is characterized in that first temperature threshold
Value range be 0 ~ 1 DEG C.
5. according to claim 1 prevent the method that cam lens haze, which is characterized in that the second temperature threshold value
Value range be 1 ~ 5 DEG C.
6. according to claim 2 prevent the method that cam lens haze, which is characterized in that the default humidity threshold
Value range is 80%-90%.
7. a kind of camera module for preventing cam lens from hazing, which is characterized in that including camera, be arranged in the camera shooting
Temperature and humidity acquisition module inside casing, the heating device and temperature collecting module being arranged at cam lens；It is described to add
Thermal is cylindrical in shape structure and is set on the outside of the cam lens, and the installation temperature is equipped on the heating device and is adopted
Collect the limiting slot of module.
8. according to claim 7 prevent the camera module that cam lens haze, which is characterized in that described add is made
The material of thermal is heatable thermo electric material；
The thermo electric material includes fever metal material, silicon-carbon heater element, silicon molybdenum heater element, ceramic heating plate, PI fever
Film, PTC heater, heating wire or conductive coating.
9. according to claim 7 prevent the camera module that cam lens haze, which is characterized in that the temperature is adopted
Collect module and the cam lens connect.
10. according to claim 7 prevent the camera module that cam lens haze, which is characterized in that described warm and humid
Spending acquisition module includes Temperature Humidity Sensor, and the temperature collecting module includes temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511604.5A CN110248060A (en) | 2019-06-13 | 2019-06-13 | A kind of method and camera module for preventing cam lens from hazing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511604.5A CN110248060A (en) | 2019-06-13 | 2019-06-13 | A kind of method and camera module for preventing cam lens from hazing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110248060A true CN110248060A (en) | 2019-09-17 |
Family
ID=67886897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910511604.5A Pending CN110248060A (en) | 2019-06-13 | 2019-06-13 | A kind of method and camera module for preventing cam lens from hazing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110248060A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447704A (en) * | 2020-03-16 | 2020-07-24 | 浙江华睿科技有限公司 | Anti-condensation device, shooting equipment and anti-condensation method |
| CN113126395A (en) * | 2021-04-08 | 2021-07-16 | 深圳市豪恩汽车电子装备股份有限公司 | Defogging lens |
| CN113438389A (en) * | 2020-03-23 | 2021-09-24 | 浙江宇视科技有限公司 | Anti-fog method, anti-fog device, camera device and storage medium |
| CN113568445A (en) * | 2021-07-21 | 2021-10-29 | 南京牧镭激光科技有限公司 | Device and method for controlling condensation point of scanning head of three-dimensional scanning type wind measurement laser radar |
| CN113645383A (en) * | 2021-07-29 | 2021-11-12 | 深圳市芯成像科技有限公司 | Defogging method and system for lens and camera |
| CN114554051A (en) * | 2022-02-11 | 2022-05-27 | 杭州海康威视数字技术股份有限公司 | Camera module and control method thereof |
| CN114839829A (en) * | 2022-03-14 | 2022-08-02 | 惠州市德赛西威智能交通技术研究院有限公司 | Method and device for automatically heating and deicing, defrosting and fogging of vehicle-mounted lens |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169505A (en) * | 2006-10-27 | 2008-04-30 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN106851061A (en) * | 2017-01-23 | 2017-06-13 | 浙江大华技术股份有限公司 | Image capture device |
| CN107526235A (en) * | 2016-06-20 | 2017-12-29 | 杭州海康威视数字技术股份有限公司 | A kind of method, apparatus for preventing camera lens protecgulum from hazing and video camera |
| CN207720257U (en) * | 2017-12-29 | 2018-08-10 | 中山明智源光电科技有限公司 | A kind of camera heating anti-smog device and a kind of camera |
| CN207766371U (en) * | 2018-01-23 | 2018-08-24 | 唐山众腾伟业科技有限公司 | Anti-fogging camera |
| CN108650446A (en) * | 2018-06-01 | 2018-10-12 | 深圳市迪威泰实业有限公司 | The antifog, waterproof camera and image pickup method that low temperature uses |
| CN108986097A (en) * | 2018-08-23 | 2018-12-11 | 上海小萌科技有限公司 | A kind of camera lens hazes condition detection method, computer installation and readable storage medium storing program for executing |
| CN208971618U (en) * | 2018-10-16 | 2019-06-11 | 浙江宇视科技有限公司 | A kind of panorama camera |
-
2019
- 2019-06-13 CN CN201910511604.5A patent/CN110248060A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169505A (en) * | 2006-10-27 | 2008-04-30 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN107526235A (en) * | 2016-06-20 | 2017-12-29 | 杭州海康威视数字技术股份有限公司 | A kind of method, apparatus for preventing camera lens protecgulum from hazing and video camera |
| CN106851061A (en) * | 2017-01-23 | 2017-06-13 | 浙江大华技术股份有限公司 | Image capture device |
| CN207720257U (en) * | 2017-12-29 | 2018-08-10 | 中山明智源光电科技有限公司 | A kind of camera heating anti-smog device and a kind of camera |
| CN207766371U (en) * | 2018-01-23 | 2018-08-24 | 唐山众腾伟业科技有限公司 | Anti-fogging camera |
| CN108650446A (en) * | 2018-06-01 | 2018-10-12 | 深圳市迪威泰实业有限公司 | The antifog, waterproof camera and image pickup method that low temperature uses |
| CN108986097A (en) * | 2018-08-23 | 2018-12-11 | 上海小萌科技有限公司 | A kind of camera lens hazes condition detection method, computer installation and readable storage medium storing program for executing |
| CN208971618U (en) * | 2018-10-16 | 2019-06-11 | 浙江宇视科技有限公司 | A kind of panorama camera |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447704A (en) * | 2020-03-16 | 2020-07-24 | 浙江华睿科技有限公司 | Anti-condensation device, shooting equipment and anti-condensation method |
| CN111447704B (en) * | 2020-03-16 | 2022-03-01 | 浙江华睿科技股份有限公司 | Anti-condensation device, shooting equipment and anti-condensation method |
| CN113438389A (en) * | 2020-03-23 | 2021-09-24 | 浙江宇视科技有限公司 | Anti-fog method, anti-fog device, camera device and storage medium |
| CN113438389B (en) * | 2020-03-23 | 2022-08-23 | 浙江宇视科技有限公司 | Anti-fog method, anti-fog device, camera device and storage medium |
| CN113126395A (en) * | 2021-04-08 | 2021-07-16 | 深圳市豪恩汽车电子装备股份有限公司 | Defogging lens |
| CN113568445A (en) * | 2021-07-21 | 2021-10-29 | 南京牧镭激光科技有限公司 | Device and method for controlling condensation point of scanning head of three-dimensional scanning type wind measurement laser radar |
| CN113645383A (en) * | 2021-07-29 | 2021-11-12 | 深圳市芯成像科技有限公司 | Defogging method and system for lens and camera |
| CN113645383B (en) * | 2021-07-29 | 2022-07-22 | 深圳市芯成像科技有限公司 | Defogging method and system for lens and camera |
| CN114554051A (en) * | 2022-02-11 | 2022-05-27 | 杭州海康威视数字技术股份有限公司 | Camera module and control method thereof |
| CN114554051B (en) * | 2022-02-11 | 2024-03-08 | 杭州海康威视数字技术股份有限公司 | Image pickup module and control method thereof |
| CN114839829A (en) * | 2022-03-14 | 2022-08-02 | 惠州市德赛西威智能交通技术研究院有限公司 | Method and device for automatically heating and deicing, defrosting and fogging of vehicle-mounted lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110248060A (en) | A kind of method and camera module for preventing cam lens from hazing | |
| CN102789115B (en) | A kind of video camera demister system | |
| US8794304B2 (en) | Temperature sensor assembly for a vehicle | |
| CN108780267A (en) | Installed video processing unit | |
| EP3281397A1 (en) | Camera heater for advanced driver assistance system | |
| CN106851061B (en) | Image acquisition device | |
| CN105143836B (en) | Thermal flowmeter | |
| CN102239368A (en) | Vehicular fluid heater | |
| CN103057380A (en) | Method and device for preventing mist from being formed on window glass of vehicle | |
| CN109828425A (en) | Camera lens heating module and the camera lens and camera for using it | |
| US20170182952A1 (en) | Moderation of a driver assist camera environment by headliner air duct | |
| US20170355352A1 (en) | Conformal Heater for Windshield Washer Nozzle | |
| CN103293830B (en) | Monitoring camera | |
| CN104994259A (en) | Camera module support molded based on metal powder, and manufacturing method and application thereof | |
| EP3207566A1 (en) | Heated image sensor window | |
| CN107209067B (en) | Temperature sensor and its manufacturing method | |
| KR101004404B1 (en) | Assembly structure of thermistor and method for assembling the same | |
| CN110244502A (en) | The image pick-up device of heating device and the application heating device | |
| CN110091809A (en) | A kind of formula of spontaneous heating camera bracket and conductive plastics based on conductive plastics | |
| CN208156395U (en) | Automatic heating camera module | |
| CN208143324U (en) | A kind of water-proof CCD camera | |
| CN110103891A (en) | A kind of windshield having from defrosting function | |
| CN207300441U (en) | A kind of environment temperature sensor part assembly | |
| CN204831609U (en) | Antifog mirror sensor of automobile rearview mirror intelligence | |
| CN213305539U (en) | Unmanned vehicle and forward-looking camera integrated assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190917 |