CN208337777U - Active focusing mechanism - Google Patents
Active focusing mechanism Download PDFInfo
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- CN208337777U CN208337777U CN201820897777.6U CN201820897777U CN208337777U CN 208337777 U CN208337777 U CN 208337777U CN 201820897777 U CN201820897777 U CN 201820897777U CN 208337777 U CN208337777 U CN 208337777U
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Abstract
The utility model discloses a kind of active focusing mechanisms, including chart board, lighting system, relay lens, camera lens, imaging sensor and controller, camera lens is fixed on mechanical arm, and relay lens and chart board are sequentially arranged in outside the side of camera lens, and imaging sensor is set to outside the opposite other side of camera lens；Lighting system issues infrared light to chart board and is imaged through relay lens to camera lens after chart board reflects, the image information of camera lens is sent to controller by imaging sensor, controller works according to the signal control lighting system and mechanical arm that receive, and relay lens includes spherical surface ontology and several small-bore lens on spherical surface ontology.The utility model uses small-bore compound eye relay lens during manufacture, detection vehicle-mounted pick-up mould group, improves the image quality to short distance target；It is reduced costs relative to large aperture relay lens, is easy to maintain and safeguard, while having optimized the image quality of big field angle；It is designed using spherical surface target cooperation relay lens, improves the image quality to target.
Description
Technical field
The utility model relates to a kind of active focusing mechanisms.
Background technique
As camera constantly develops toward high pixel, the remote image quality requirements of mould group are higher and higher, traditional
Test method, which is examined, needs huge detection space, and can generate biggish inspection error, mutually confidential particularly with vehicle-mounted forward sight
To several hundred rice to tens meters object at clearly as.Target can not be placed on phase since space limits by camera focusing
The distance answered needs to be imaged onto 1 meter or so of target using relay lens to simulate several hundred meters of imaging in a limited space
Several hundred rice.Relay lens is made of multi-disc optical mirror slip, and effect is the focal length for increasing original camera lens.Since it is one in recessed
The optical system of mirror effect, so cannot individually be imaged, being used together with the conventional mirror head in convex lens effect can just be obtained
Clearly as therefore the image quality of optical system can be reduced.While in order to cover the full filed of camera lens, usually select big
Bore relay lens.But heavy caliber relay lens processing difficulties, so cost is very high, and in big field angle to image quality shadow
Sound is also larger.
Summary of the invention
In order to overcome drawbacks described above, the utility model provides a kind of active focusing mechanism, solves tradition actively focusing dress
Large diameter relay lens processing difficulties are set, cost is very high, and asks in big field angle the technology that image quality is affected
Topic, improves the image quality of full filed.
The utility model is to solve technical solution used by its technical problem: a kind of active focusing mechanism, including
Chart board, lighting system, relay lens, camera lens, imaging sensor and controller, the camera lens is fixed on the mechanical arm, described
Relay lens and chart board are sequentially arranged in outside the side of the camera lens, and described image sensor is set to the opposite other side of the camera lens
Outside；The lighting system is imaged through the relay lens to the mirror after chart board reflection to chart board sending infrared light
The image information of the camera lens is sent to the controller by head, described image sensor, and the controller is according to receiving
Signal controls the lighting system and mechanical arm work, and the relay lens includes spherical surface ontology and on the spherical surface ontology
Several small-bore lens.
The small-bore lens are uniformly distributed on the spherical surface ontology as a further improvement of the utility model,.
The edge of the spherical surface ontology is circle as a further improvement of the utility model, described small-bore
Mirror is 9, wherein 1 small-bore lens is set to the center of the spherical surface ontology, remaining 8 small-bore lens is distributed in positioned at institute
State the surrounding of the small-bore lens of spherical surface body central.
The small-bore lens are concavees lens as a further improvement of the utility model,.
The beneficial effects of the utility model are: the utility model is mounted on the ball of special designing using multiple small-bore lens
On face, realizes and the relay lens of all demand visual fields angular direction is imaged, corresponding target is also just changed to spherical design by plane.?
Small-bore compound eye relay lens is used during manufacture, detection vehicle-mounted pick-up mould group, improves the image quality to short distance target；
It is reduced costs relative to large aperture relay lens, is easy to maintain and safeguard, while having optimized the image quality of big field angle；Make
With the cooperation relay lens design of spherical surface target, the image quality to target is improved, improves manufacture, the detection process essence of camera module
Degree.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the main view of relay lens described in the utility model；
Fig. 3 is the side view of Fig. 2；
Fig. 4 is the imaging effect and MTF curve figure using traditional relay lens；
Fig. 5 is the imaging effect and MTF curve figure using relay lens described in the utility model.
In conjunction with attached drawing, make the following instructions:
1 --- chart board；2 --- lighting system；
3 --- relay lens；4 --- camera lens；
5 --- mechanical arm；6 --- imaging sensor；
31 --- spherical surface ontology；32 --- small-bore lens.
Specific embodiment
Below in conjunction with attached drawing, elaborate to a preferred embodiment of the utility model.But the guarantor of the utility model
Shield range is not limited to following embodiments, i.e., in every case with simple made by present utility model application the scope of the patents and description
Equivalent changes and modifications all still belong within the utility model patent covering scope.
It refering to fig. 1, is a kind of active focusing mechanism described in the utility model, including chart board 1, lighting system 2, relay lens
3, camera lens 4, imaging sensor 6 and controller, the camera lens 4 are fixed on mechanical arm 5, and the relay lens 3 and chart board 1 are successively
Outside the side of the camera lens, described image sensor 6 is set to outside the opposite other side of the camera lens；The lighting system to
The chart board issues infrared light and is imaged through the relay lens to the camera lens, described image sensor after chart board reflection
The image information of the camera lens is sent to the controller, the controller controls the illumination according to the signal received and is
System 2 and mechanical arm 5 work, the relay lens include spherical surface ontology 31 and on the spherical surface ontology several are small-bore
Mirror 32.
Wherein, the small-bore lens are uniformly distributed on the spherical surface ontology.Preferably, the surrounding of the spherical surface ontology
Edge is circle, and the small-bore lens are 9, wherein 1 small-bore lens is set to the center of the spherical surface ontology, remaining 8
A small-bore lens are distributed in the surrounding of the small-bore lens positioned at the spherical surface body central.Preferably, described small-bore
Mirror is concavees lens.
When work, refering to fig. 1, lighting system issues infrared light to chart board 1, and the infrared light for changing lighting system sending is met
Relay lens is passed through after to chart board reflection and enters camera lens 4, and the image of chart board 1 is projected imaging sensor 6, image sensing by camera lens 4
Device 6 sends received picture signal to controller, and picture signal driving mechanical arm 5 adjusts camera lens 4 to controller based on the received
With the relative position of imaging sensor 6, most preferably practised physiognomy with finding.
Since the relay lens of the utility model is mounted on the spherical surface ontology of special designing using multiple slow lens, join
Fig. 2-3 is read, so as to realize the relay lens imaging to all demand visual fields angular direction, target is spherical design, center one
A lens, peripheral 8 lens are uniformly distributed, and each lens are approximately considered a concavees lens, and center lens focal length and periphery 8 are thoroughly
Mirror focal length is different, calculates the corresponding focal length of each lens in optical design software simulation according to geometry image-forming principle, is finally every
A lens degree can focus well in the same plane.
It is shown in camera module debugging process refering to attached drawing 4-5 and traditional relay lens is respectively adopted and using compound eye relay lens
Imaging effect and MTF curve, comparison is visible to be ultimately imaged effect and MTF curve more to camera module using compound eye relay lens
It is good.
It can be seen that the utility model is mounted on the spherical surface of special designing using multiple small-bore lens, realize to institute
There is the relay lens of demand visual field angular direction to be imaged, corresponding target is also just changed to spherical design by plane.It is vehicle-mounted manufacturing, detecting
Small-bore compound eye relay lens is used during camera module, improves the image quality to short distance target；Relative to large aperture
Relay lens reduces costs, and is easy to maintain and safeguard, while having optimized the image quality of big field angle；Matched using spherical surface target
Relay lens design is closed, the image quality to target is improved, improves manufacture, the detection process precision of camera module.
Claims (4)
1. a kind of active focusing mechanism, including chart board (1), lighting system (2), relay lens (3), camera lens (4), imaging sensor
(6) it is fixed on mechanical arm (5) with controller, the camera lens (4), the relay lens (3) and chart board (1) are sequentially arranged in the mirror
Outside the side of head, described image sensor (6) is set to outside the opposite other side of the camera lens；The lighting system is to the chart board
It issues infrared light to be imaged through the relay lens to the camera lens after chart board reflection, described image sensor is by the mirror
The image information of head is sent to the controller, the controller according to the signal control lighting system (2) received and
Mechanical arm (5) work, it is characterised in that: the relay lens includes spherical surface ontology (31) and several on the spherical surface ontology
A small-bore lens (32).
2. active focusing mechanism according to claim 1, it is characterised in that: the small-bore lens are uniformly distributed in described
On spherical surface ontology.
3. active focusing mechanism according to claim 2, it is characterised in that: the edge of the spherical surface ontology is circle
Shape, the small-bore lens are 9, wherein 1 small-bore lens is set to the center of the spherical surface ontology, remaining 8 small-bore
Lens are distributed in the surrounding of the small-bore lens positioned at the spherical surface body central.
4. active focusing mechanism according to claim 3, it is characterised in that: the small-bore lens are concavees lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820897777.6U CN208337777U (en) | 2018-06-11 | 2018-06-11 | Active focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820897777.6U CN208337777U (en) | 2018-06-11 | 2018-06-11 | Active focusing mechanism |
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| Publication Number | Publication Date |
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| CN208337777U true CN208337777U (en) | 2019-01-04 |
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| CN201820897777.6U Active CN208337777U (en) | 2018-06-11 | 2018-06-11 | Active focusing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108632605A (en) * | 2018-06-11 | 2018-10-09 | 昆山星际舟智能科技有限公司 | Active focusing mechanism |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108632605A (en) * | 2018-06-11 | 2018-10-09 | 昆山星际舟智能科技有限公司 | Active focusing mechanism |
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