CN110749989A - Automatic focusing helmet night vision device and automatic focusing method based on same - Google Patents
Automatic focusing helmet night vision device and automatic focusing method based on same Download PDFInfo
- Publication number
- CN110749989A CN110749989A CN201911250760.7A CN201911250760A CN110749989A CN 110749989 A CN110749989 A CN 110749989A CN 201911250760 A CN201911250760 A CN 201911250760A CN 110749989 A CN110749989 A CN 110749989A
- Authority
- CN
- China
- Prior art keywords
- night vision
- vision device
- objective lens
- image
- photoelectric conversion
- 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.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
- G02B23/125—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification head-mounted
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Telescopes (AREA)
- Eye Examination Apparatus (AREA)
- Focusing (AREA)
Abstract
An automatic focusing helmet night vision device and an automatic focusing method based on the same are provided, the helmet night vision device comprises: the device comprises an objective lens part, a photoelectric conversion part, a light splitting part, an eyepiece part, an image transfer objective lens part, an imaging part, an image analysis part and an automatic focusing part. The application provides an automatic focusing helmet night-time vision device and automatic focusing method based on it adopts the mode of secondary formation of image, with the image formation of image on the image intensifier on sensitization chip, supply software to carry out the analysis, automatic focusing has liberated user's both hands, can be real-time according to the distance of observed object, carries out the focusing, guarantees the clarity of image quality.
Description
Technical Field
The invention belongs to the technical field of helmet night vision devices, and particularly relates to an automatic focusing helmet night vision device and an automatic focusing method based on the same.
Background
The night vision is weak at night, people cannot well recognize the surrounding environment, and the night vision device is a device capable of assisting people in recognizing the surrounding environment. Night vision devices include hand-held night vision devices, helmet night vision devices and camera night vision devices, and are commonly used in the military field.
At present helmet night-time vision device, the user need carry out manual focusing to night-time vision device's objective when observing far and near target in turn, especially when the hand is occupied in the use, hardly focuses on clear position with night-time vision device, this great reduction the convenience of using.
Disclosure of Invention
In order to solve the above problems, the present invention provides an automatic focusing helmet night vision device, comprising:
an objective lens part for receiving an optical signal of a target; the objective lens part is movably arranged on the helmet night vision device;
the photoelectric conversion part is used for receiving the optical signal sent by the objective lens part and converting the optical signal into an electric signal; the photoelectric conversion part is arranged on the helmet night vision device and is connected with the objective lens;
the light splitting part is used for receiving the optical signal sent by the photoelectric conversion part and dividing the optical signal into two paths; the light splitting part is arranged on the helmet night vision device and is connected with the photoelectric converter;
the eyepiece part is used for receiving the first optical path in the light splitting part for a user to observe; the eyepiece part is arranged on the helmet night vision device and is connected with the light splitting part;
the image transfer objective lens part is used for receiving a second optical path in the light splitting part and the electric signal sent by the photoelectric conversion part; the image transfer objective lens part is arranged on the helmet night vision device and is connected with the light splitting part;
the imaging part is used for receiving the second optical path and the electric signal sent by the image transfer objective lens part to form an image; the imaging part is arranged on the helmet night vision device and is connected with the image transfer objective lens part;
an image analyzing section for analyzing the sharpness of the image on the imaging section and comparing it with a preset threshold; the image analysis part is arranged on the helmet night vision device and is connected with the imaging part;
an autofocus part for autofocusing according to an analysis result of the image analysis part; the automatic focusing part is arranged on the helmet night vision device and is respectively connected with the image analysis part and the objective lens part;
the automatic focusing part adjusts the objective lens part to be close to or far away from the photoelectric conversion part so that the definition of an image on the imaging part meets a preset threshold value.
Preferably, a motion path is provided on the helmet night vision device corresponding to the objective lens portion, and the auto-focusing portion drives the objective lens portion to move along the motion path so as to be close to or far from the photoelectric conversion portion.
Preferably, a sliding groove is arranged in the movement path, and the automatic focusing part drives the objective lens part to move in the sliding groove so as to be close to or far from the photoelectric conversion part.
Preferably, the photoelectric conversion part is fixedly arranged at the first end of the sliding groove, the objective lens part is arranged in the sliding groove, and the automatic focusing part is respectively connected with the photoelectric conversion part and the objective lens part and adjusts the distance between the photoelectric conversion part and the objective lens part.
Preferably, the auto-focusing part includes a motor that drives the objective lens part to approach or separate from the photoelectric conversion part.
Preferably, the objective part comprises a micro-optic objective for receiving a micro-optic image signal of the object.
Preferably, the photoelectric conversion portion includes an image intensifier for converting an optical signal of the own cathode into an electric signal and exciting amplification to display an image of the object on the own anode surface.
Preferably, the spectroscopic part includes a beam splitter.
Preferably, the image forming portion includes a photosensitive chip.
The invention also provides an automatic focusing method based on the automatic focusing helmet night-vision device, wherein the automatic focusing helmet night-vision device is any one of the automatic focusing helmet night-vision devices, and the method comprises the following steps:
the image analyzing section analyzes the sharpness of the image on the imaging section;
the image analysis part judges whether the definition of the image meets a preset threshold value;
if so, maintaining the distance between the objective lens part and the photoelectric conversion part;
if not, the automatic focusing part adjusts the objective lens part to be close to or far away from the photoelectric conversion part, and the operation is circulated.
The application provides an automatic focusing helmet night-time vision device and automatic focusing method based on it adopts the mode of secondary formation of image, with the image formation of image on the image intensifier on sensitization chip, supply software to carry out the analysis, automatic focusing has liberated user's both hands, can be real-time according to the distance of observed object, carries out the focusing, guarantees the clarity of image quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an auto-focusing helmet night vision device provided by the present invention;
FIG. 2 is a schematic diagram of an auto-focusing helmet night vision device provided by the present invention;
FIG. 3 is an internal schematic view of an auto-focusing helmet night vision device provided by the present invention;
fig. 4 is a flowchart of an auto-focusing method based on an auto-focusing helmet night vision device according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In an embodiment of the present application, as shown in fig. 1 and 2, the present application provides an auto-focusing helmet night vision device comprising: an objective lens section 2, a photoelectric conversion section 3, a spectroscopic section 4, an eyepiece section 5, a relay objective lens section 6, an imaging section 7, an image analysis section 8, and an autofocus section 9, each of which is described in detail below.
In an embodiment of the present application, as shown in fig. 1 and 2, the present application provides an auto-focusing helmet night vision device, comprising:
an objective lens part 2 for receiving an optical signal of a target; the objective lens part 2 is movably arranged on the helmet night vision device 1;
a photoelectric conversion part 3 for receiving the optical signal transmitted by the objective lens part 2 and converting the optical signal into an electrical signal; the photoelectric conversion part is arranged on the helmet night vision device 1 and is connected with the objective lens;
the light splitting part 4 is used for receiving the optical signal sent by the photoelectric conversion part 3 and dividing the optical signal into two paths; the light splitting part is arranged on the helmet night vision device 1 and is connected with the photoelectric converter;
the eyepiece part 5 is used for receiving the first light path in the light splitting part 4 for a user to observe; the eyepiece part 5 is arranged on the helmet night vision device 1 and is connected with the light splitting part 4;
an image transfer objective lens part 6 for receiving the second optical path in the spectroscopic part 4 and the electric signal sent by the photoelectric conversion part 3; the image transfer objective lens part 6 is arranged on the helmet night vision device 1 and is connected with the light splitting part 4;
the imaging part 7 is used for receiving the second optical path and the electric signal sent by the image transfer objective lens part 6 to form an image; the imaging part 7 is arranged on the helmet night vision device 1 and is connected with the image transfer objective lens part 6;
an image analyzing section 8 for analyzing the sharpness of the image on the imaging section 7 and comparing it with a preset threshold; the image analysis part 8 is arranged on the helmet night vision device 1 and is connected with the imaging part 7;
an autofocus part 9 for autofocusing based on the analysis result of the image analysis part 8; the automatic focusing part 9 is arranged on the helmet night vision device 1 and is respectively connected with the image analysis part 8 and the objective lens part 2;
the automatic focusing part 9 adjusts the objective lens part 2 to be close to or far from the photoelectric conversion part 3, so that the definition of the image on the imaging part 7 meets a preset threshold value.
When the automatic focusing helmet night vision device 1 works, an image can be formed on the imaging part 7, and the image analysis part 8 can analyze the definition of the image on the imaging part 7 and compare the definition with a preset threshold value; if the definition meets a preset threshold value, the automatic focusing part 9 does not act, and the distance between the objective lens part 2 and the photoelectric conversion part 3 is kept unchanged; if the definition does not satisfy the preset threshold, the automatic focusing part 9 controls the objective lens part 2 to approach or depart from the photoelectric conversion part 3, so as to change the distance between the objective lens part 2 and the photoelectric conversion part until the definition satisfies the preset threshold.
As shown in fig. 3, in the embodiment of the present application, a motion path 10 is provided on the helmet night vision device 1 corresponding to the objective lens portion 2, and the autofocus portion 9 drives the objective lens portion 2 to move along the motion path 10 so as to approach or separate from the photoelectric conversion portion 3. The movement path 10 may be a space inside the helmet night vision device 1, in which the objective lens part 2 can move.
As shown in fig. 3, in the embodiment of the present application, a sliding groove 11 is provided in the movement path 10, and the autofocus part 9 drives the objective lens part 2 to move in the sliding groove 11 so as to approach or separate from the photoelectric conversion part 3. The purpose of supporting the objective lens part 2 can be achieved on one hand by arranging the sliding chute 11 in the movement path 10; on the other hand, the device can also play a role in guiding the moving direction of the device.
Further, in the embodiment of the present application, the photoelectric conversion portion 3 is fixedly disposed at the first end of the sliding slot 11, the objective lens portion 2 is disposed in the sliding slot 11, and the auto-focusing portion 9 is respectively connected with the photoelectric conversion portion 3 and the objective lens portion 2 and adjusts the distance therebetween.
As shown in fig. 1 and 2, in the embodiment of the present application, the autofocus portion 9 includes a motor 12, and the motor 12 drives the objective lens portion 2 to move closer to or away from the photoelectric conversion portion 3.
As shown in fig. 1 and 2, in the embodiment of the present application, the objective lens part 2 includes a micro-optic objective lens 13, and the micro-optic objective lens 13 is used for receiving a micro-optic image signal of an object. In some situations of insufficient light, the micro-light objective 13 in the objective part 2 can be used for collecting the micro-light image signal.
As shown in fig. 1 and 2, in the embodiment of the present application, the photoelectric conversion portion 3 includes an image intensifier 14, and the image intensifier 14 is configured to convert an optical signal of the cathode into an electrical signal and to excite amplification, so as to display an image of a target on the surface of the anode.
As shown in fig. 1 and 2, in the embodiment of the present application, the spectroscopic part 4 includes a beam splitter 15. One optical path can be divided into 2 by the beam mirror 15.
As shown in fig. 1 and 2, in the embodiment of the present application, the image forming portion 7 includes a photosensitive chip. The photosensitive chip is used for imaging.
In the embodiment of the present application, the image analysis portion 8 may be an image analysis chip or an image analysis software, and is used for analyzing the definition of the image, which is not limited in the present application.
As shown in fig. 4, in the embodiment of the present application, the present application further provides an auto-focusing method based on an auto-focusing helmet night vision device, where the auto-focusing helmet night vision device is any one of the auto-focusing helmet night vision devices 1, and the method includes the steps of:
the image analyzing section 8 analyzes the sharpness of the image on the imaging section 7;
the image analysis part 8 judges whether the definition of the image meets a preset threshold value;
if so, maintaining the distance between the objective lens part 2 and the photoelectric conversion part 3;
if not, the automatic focusing part 9 adjusts the objective lens part 2 to be close to or far from the photoelectric conversion part 3, and the above operations are circulated.
The application provides an automatic focusing helmet night-time vision device and automatic focusing method based on it adopts the mode of secondary formation of image, with the image formation of image on the image intensifier on sensitization chip, supply software to carry out the analysis, automatic focusing has liberated user's both hands, can be real-time according to the distance of observed object, carries out the focusing, guarantees the clarity of image quality.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. An auto-focusing helmet night vision device, comprising:
an objective lens part for receiving an optical signal of a target; the objective lens part is movably arranged on the helmet night vision device;
the photoelectric conversion part is used for receiving the optical signal sent by the objective lens part and converting the optical signal into an electric signal; the photoelectric conversion part is arranged on the helmet night vision device and is connected with the objective lens;
the light splitting part is used for receiving the optical signal sent by the photoelectric conversion part and dividing the optical signal into two paths; the light splitting part is arranged on the helmet night vision device and is connected with the photoelectric converter;
the eyepiece part is used for receiving the first optical path in the light splitting part for a user to observe; the eyepiece part is arranged on the helmet night vision device and is connected with the light splitting part;
the image transfer objective lens part is used for receiving a second optical path in the light splitting part and the electric signal sent by the photoelectric conversion part; the image transfer objective lens part is arranged on the helmet night vision device and is connected with the light splitting part;
the imaging part is used for receiving the second optical path and the electric signal sent by the image transfer objective lens part to form an image; the imaging part is arranged on the helmet night vision device and is connected with the image transfer objective lens part;
an image analyzing section for analyzing the sharpness of the image on the imaging section and comparing it with a preset threshold; the image analysis part is arranged on the helmet night vision device and is connected with the imaging part;
an autofocus part for autofocusing according to an analysis result of the image analysis part; the automatic focusing part is arranged on the helmet night vision device and is respectively connected with the image analysis part and the objective lens part;
the automatic focusing part adjusts the objective lens part to be close to or far away from the photoelectric conversion part so that the definition of an image on the imaging part meets a preset threshold value.
2. The auto-focusing helmet night vision device of claim 1, wherein a motion path is provided on the helmet night vision device corresponding to the objective lens portion, and the auto-focusing portion drives the objective lens portion to move along the motion path to approach or separate from the photoelectric conversion portion.
3. The autofocus helmet night vision device of claim 2, wherein a slide slot is disposed within the path of motion, the autofocus portion driving the objective lens portion to move within the slide slot to approach or move away from the photoelectric conversion portion.
4. The auto-focusing helmet night vision device of claim 3, wherein the photoelectric conversion portion is fixedly disposed at a first end of the sliding slot, the objective lens portion is disposed in the sliding slot, and the auto-focusing portion is connected to and adjusts a distance between the photoelectric conversion portion and the objective lens portion, respectively.
5. The autofocus helmet night vision device of any of claims 2-4, wherein the autofocus portion includes a motor that drives the objective lens portion toward or away from the photoelectric conversion portion.
6. The autofocus helmet night vision device of claim 1, wherein the objective portion comprises a low-light objective for receiving a low-light image signal of the subject.
7. The auto-focusing helmet night vision device of claim 1, wherein the photoelectric conversion portion comprises an image intensifier for converting an optical signal of a cathode of the device into an electrical signal and exciting amplification to display an image of a target on an anode surface of the device.
8. The autofocus helmet night vision device of claim 1, wherein the beam splitter portion comprises a beam splitter.
9. The autofocus helmet night vision device of claim 1, wherein the imaging portion comprises a photo sensor chip.
10. A method of auto-focusing based on an auto-focusing helmet night vision device, wherein the auto-focusing helmet night vision device is as claimed in any one of claims 1 to 9, the method comprising the steps of:
the image analyzing section analyzes the sharpness of the image on the imaging section;
the image analysis part judges whether the definition of the image meets a preset threshold value;
if so, maintaining the distance between the objective lens part and the photoelectric conversion part;
if not, the automatic focusing part adjusts the objective lens part to be close to or far away from the photoelectric conversion part, and the operation is circulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250760.7A CN110749989A (en) | 2019-12-09 | 2019-12-09 | Automatic focusing helmet night vision device and automatic focusing method based on same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250760.7A CN110749989A (en) | 2019-12-09 | 2019-12-09 | Automatic focusing helmet night vision device and automatic focusing method based on same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110749989A true CN110749989A (en) | 2020-02-04 |
Family
ID=69285802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911250760.7A Withdrawn CN110749989A (en) | 2019-12-09 | 2019-12-09 | Automatic focusing helmet night vision device and automatic focusing method based on same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110749989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4160308A1 (en) * | 2021-09-30 | 2023-04-05 | L3Harris Technologies, Inc. | Semi-transparent detector array for auto-focused nightvision systems |
-
2019
- 2019-12-09 CN CN201911250760.7A patent/CN110749989A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4160308A1 (en) * | 2021-09-30 | 2023-04-05 | L3Harris Technologies, Inc. | Semi-transparent detector array for auto-focused nightvision systems |
| US11805315B2 (en) | 2021-09-30 | 2023-10-31 | L3Harris Technologies, Inc. | Semi-transparent detector array for auto-focused nightvision systems |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2793457B1 (en) | Image processing device, image processing method, and recording medium | |
| EP1617652B1 (en) | Hybrid autofocus system for a camera | |
| CN103261940B (en) | Endoscope apparatus | |
| US8064762B2 (en) | Imaging apparatus and imaging lens unit | |
| EP3907544B1 (en) | Lens barrel, camera system, and imaging device | |
| JP5537186B2 (en) | Attachment lens device and imaging device including the same | |
| US8520130B2 (en) | Image capturing apparatus and auto-focus control method thereof | |
| US7848630B2 (en) | Autofocus adapter | |
| JP6071744B2 (en) | Automatic focus adjustment device, lens device having the same, and imaging device | |
| JP5022580B2 (en) | Endoscope device | |
| US9277111B2 (en) | Image capture apparatus and control method therefor | |
| US20140253761A1 (en) | Control device, control method, and imaging apparatus | |
| JP2013218177A (en) | Imaging device and control method of the same | |
| CN105785561A (en) | Digital microscope and focusing method thereof | |
| CN110749989A (en) | Automatic focusing helmet night vision device and automatic focusing method based on same | |
| CN210776019U (en) | Automatic focusing helmet night-vision device | |
| CN108200319B (en) | Large zoom integrated camera and automatic control method thereof | |
| JP6234016B2 (en) | Focus adjustment device, imaging device, and control method thereof | |
| US20220270342A1 (en) | Electronic apparatus and control method of the same | |
| JP2018112605A (en) | Imaging device | |
| JP3314513B2 (en) | Microscope with video camera | |
| CN112051260A (en) | Portable panoramic cell analysis system and panoramic microscopic imaging method thereof | |
| CN108349075B (en) | Optical tweezers device | |
| JP4535462B2 (en) | Subject image acquisition device | |
| JP2013088559A (en) | Imaging apparatus, imaging method, and finder device |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200204 |