CN114995013A - Focusing device and method for infrared thermal imager - Google Patents
Focusing device and method for infrared thermal imager Download PDFInfo
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- CN114995013A CN114995013A CN202210626276.5A CN202210626276A CN114995013A CN 114995013 A CN114995013 A CN 114995013A CN 202210626276 A CN202210626276 A CN 202210626276A CN 114995013 A CN114995013 A CN 114995013A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 3
- 238000001931 thermography Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000012634 optical imaging Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
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- 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
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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Abstract
The invention provides a focusing device and a focusing method of an infrared thermal imager, and the focusing device comprises a main shell, a lens, a movable module, a main board and a focal length adjusting device, wherein the main shell comprises a front cover; the movable module comprises a fixed bracket, a shutter and a signal plate; the shutter comprises a detector, the detector comprises a focal plane, and the focal plane is arranged towards the lens; the lead screw is connected with the clearance eliminating bracket in a thread fit way, and the clearance eliminating bracket is fixedly arranged on the fixed bracket; the anti-backlash bracket is driven by a direct current motor to drive the fixed bracket to move back and forth along a straight line where the lead screw is located, so that a focal plane is coincided with a focal point of the lens; the shutter converts image signal to the signal board of signal transmission, and the mainboard setting is in the main casing. The direct current motor drives the focal plane to move along the straight line where the lead screw is located, the position of the focal plane can be adjusted according to focal lengths of different lenses, the device is wide in application range, and imaging definition is high.
Description
Technical Field
The invention relates to the technical field of infrared thermal imaging, in particular to a focusing device and a focusing method of an infrared thermal imager.
Background
The infrared thermal imager uses an infrared detector and an optical imaging objective lens to receive an infrared radiation energy distribution pattern of a detected target and reflect the infrared radiation energy distribution pattern on a photosensitive element of the infrared detector so as to obtain an infrared thermal image, and the thermal image corresponds to a thermal distribution field on the surface of an object. Traditionally, thermal infrared imagers have been used to convert the invisible infrared energy emitted by an object into a visible thermal image. The different colors on the top of the thermal image represent the different temperatures of the object being measured.
The optical imaging objective lens is generally a lens, and because the distance of an imaging object is uncertain, the lens needs to be selected according to the distance between the infrared thermal imager and the object to be measured. According to the difference of focal length and bore of the lens, the focal position of the lens image is different, thus leading to that the focusing mechanism can not be general, needing to cooperate with various imaging devices, increasing the cost of later design and maintenance. In the theoretical algorithm aspect of focusing, clear points are found by traversing the full stroke, the focusing time can be increased, the compensated stroke and damping of infrared lenses with different specifications can be different, so that the lenses with different specifications are obtained, and the parameters of the focusing algorithm are required to be adjusted according to actual conditions.
Disclosure of Invention
In view of the above, the present invention provides a focusing apparatus and method for an infrared thermal imager, which automatically complete focusing according to the requirements of different lenses.
The technical scheme of the invention is realized as follows: the focusing device of the infrared thermal imager comprises a main shell, a lens, a movable module, a mainboard and a focal length adjusting device, wherein the main shell comprises a front cover, and the lens is detachably connected with the front cover; the movable module comprises a fixed bracket, a shutter and a signal plate; the shutter comprises a detector, the detector comprises a focal plane, and the focal plane is arranged towards the lens; the shutter is arranged between the signal plate and the lens, and both the shutter and the signal plate are fixedly arranged on the fixed support; the focal length adjusting device comprises a direct current motor, a lead screw and an anti-backlash bracket; the output end of the direct current motor is connected with a lead screw, the lead screw is in threaded fit connection with the anti-backlash support, and the anti-backlash support is fixedly arranged on the fixed support; the anti-backlash bracket is driven by a direct current motor to drive the fixed bracket to move back and forth along a straight line where the lead screw is located, so that a focal plane is coincident with a focal point of the lens; the shutter converts an image signal into an electric signal and transmits the electric signal to the signal board, and a flat cable is arranged between the signal board and the main board; the mainboard sets up in the main casing.
On the basis of the technical scheme, preferably, the fixed support comprises a shutter fixed support and a movable fixed support, the shutter is fixedly arranged in the shutter fixed support, the signal board is arranged between the shutter fixed support and the movable fixed support, and the anti-backlash support is fixedly arranged on the movable fixed support.
On the basis of the above technical scheme, preferably, the focal length adjusting device further includes a movable guide device, the movable guide device includes a guide pillar and a guide sleeve, one end of the guide pillar is slidably disposed in the guide sleeve, the other end of the guide pillar is fixedly disposed on the movable fixed support, and the guide sleeve is fixedly disposed on the main casing.
On the basis of the above technical solution, preferably, the focal length adjusting device further includes a positioning mechanism, and the positioning mechanism includes a travel bar, a first travel switch, a second travel switch, and a switch fixing frame; the first travel switch and the second travel switch are arranged oppositely, one end of the travel stop lever is arranged between the first travel switch and the second travel switch, the other end of the travel stop lever is fixedly arranged on the movable fixing support, the first travel switch and the second travel switch are fixedly arranged on the switch fixing frame, and the switch fixing frame is fixedly arranged in the main shell.
On the basis of the technical scheme, preferably, the main shell further comprises a motor transmission port and a motor buckling cover, the stroke stop lever extends into the main shell from the motor transmission port, and the motor buckling cover covers the motor transmission port.
On the basis of the technical scheme, preferably, the focal length adjusting device further comprises a speed reducer and a motor support, the speed reducer is arranged between the direct current motor and the lead screw, the speed reducer and the direct current motor are both fixedly arranged on the motor support, and the motor support is fixedly arranged on the motor transmission port.
On the basis of the above technical scheme, preferably, the portable electronic device further comprises an interface board, a network port and a control power supply port, wherein one end of the network port extends out of the main shell, the other end of the network port is electrically connected with the interface board, one end of the control power supply port extends out of the main shell, the other end of the control power supply port is electrically connected with the interface board, the interface board and the direct current motor are both electrically connected with the main board, and the interface board is fixedly arranged in the main shell.
On the basis of the above technical scheme, preferably, the lead screw is perpendicular to the focal plane.
On the basis of the technical scheme, preferably, the front cover is provided with an internal thread, the lens is provided with an external thread, and the front cover is in threaded fit connection with the lens.
Compared with the prior art, the focusing device of the infrared thermal imager and the using method thereof have the following beneficial effects:
(1) the direct current motor drives the focal plane to move along the straight line where the lead screw is positioned, the position of the focal plane can be adjusted according to the focal lengths of different lenses, the device is wide in application range, and the imaging definition is higher;
(2) the focal plane moves and drives the lead screw to rotate through the direct current motor, the lead screw is in threaded connection with the anti-backlash support, and at the moment, the movable module moves more stably and has higher precision;
(3) the focal length adjusting device also comprises a movable guiding device, so that the movable module is more stable in the moving process, and the adjusting difficulty is reduced;
(4) the first travel switch and the second travel switch are used for limiting the moving distance of the movable module and preventing the movable module from moving beyond the adjusting range;
(5) the speed reducer is used for reducing the speed of the output end of the direct current motor, and the adjusting precision between the screw rod and the anti-backlash support is improved;
(6) the protecgulum passes through screw-thread fit with the camera lens to be connected, has realized dismantling and removable of camera lens.
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, 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 the drawings without creative efforts.
FIG. 1 is a perspective view of a focusing assembly of an infrared thermal imager in accordance with the present invention;
FIG. 2 is a top view of a focusing assembly of the thermal infrared imager of the present invention;
FIG. 3 is a view A-A of FIG. 2 of the present invention;
FIG. 4 is a schematic partial structural view of a focusing device of an infrared thermal imager in accordance with the present invention;
FIG. 5 is a schematic view of a focusing device of an infrared thermal imager according to the present invention;
FIG. 6 is a perspective view of a fixing bracket and an anti-backlash bracket of the present invention;
fig. 7 is a schematic partial structure diagram of a focusing device of an infrared thermal imager in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-7, the focusing device of the thermal infrared imager includes a main housing 1, a lens 2, a movable module 3, a main board 4, a focal length adjusting device 5, an interface board 6, a network port 7, and a control power port 8.
As shown in fig. 1 and 7, the main housing 1 includes a front cover 11, a motor transmission port 12, and a motor engagement cover 13.
The movable module 3, as shown in fig. 3 to 6, includes a fixed bracket 31, a shutter 32, and a signal plate 33.
The reason for adjusting the distance between the movable module 3 and the lens 2 is that the shutter 32 is integrated with the movable module 3. as a preferred embodiment, the shutter 32 includes a detector 321, the detector 321 includes a focal plane 322, the focal plane 322 is disposed toward the lens 2, and the imaging resolution of the infrared thermal imager is determined by the distance between the focal plane 322 and the lens 2.
In order to avoid the light received by the lens 2 from being blocked, as a preferred embodiment, the shutter 32 is disposed between the signal plate 33 and the lens 2, and both the shutter 32 and the signal plate 33 are fixedly disposed on the fixing bracket 31. There is no shielding between the lens 2 and the shutter 32, so that the imaging effect is better.
The fixed bracket 31 comprises a shutter fixed bracket 311 and a movable fixed bracket 312, the shutter 32 is fixedly arranged in the shutter fixed bracket 311, the signal plate 33 is arranged between the shutter fixed bracket 311 and the movable fixed bracket 312, and the anti-backlash bracket 53 is fixedly arranged on the movable fixed bracket 312. The shutter fixing support 311 is used for fixing the shutter 32, the movable fixing support 312 is used for fixing the anti-backlash support 53, the shutter fixing support 311 and the movable fixing support 312 clamp the signal plate 33 in the middle, and the shutter fixing support 311 and the movable fixing support 312 are fixed into a whole through screws, so that the shutter 32 and the signal plate 33 can be conveniently installed on the fixing support 31.
The focal length adjusting device 5, as shown in fig. 3 to 7, includes a dc motor 51, a lead screw 52, an anti-backlash bracket 53, a movement guide 54, a positioning mechanism 55, a speed reducer 56, and a motor bracket 57.
The lead screw 52 is perpendicular to the focal plane 322, the output end of the direct current motor 51 is connected with the lead screw 52, the lead screw 52 is connected with the anti-backlash support 53 in a threaded fit mode, and the anti-backlash support 53 is fixedly arranged on the fixing support 31. The lead screw 52 drives the anti-backlash bracket 53 to move along the length direction of the lead screw 52, the anti-backlash bracket 53 drives the fixed bracket 31 to move, and the anti-backlash bracket 53 drives the fixed bracket 31 to move back and forth along the straight line where the lead screw 52 is located under the driving of the direct current motor 51, so that the focal plane 322 is superposed with the focal point of the lens 2.
To limit the movement of the fixed bracket 31, as a preferred embodiment, the positioning mechanism 55 includes a travel stop 551, a first travel switch 552, a second travel switch 553, and an open-close fixture 554; the first and second travel switches 552 and 553 are oppositely disposed, one end of the travel lever 551 is disposed between the first and second travel switches 552 and 553, the other end of the travel lever 551 is fixedly disposed on the movable fixing bracket 312, the first and second travel switches 552 and 553 are both fixedly disposed on the switch fixing bracket 554, and the switch fixing bracket 544 is fixedly disposed in the main housing 1. Wherein the first position switch 552 is closer to the lens 2 than the second position switch 553, when the dc motor 51 drives the position lever 551 to move, whether contacting with the first position switch 552 and the second position switch 553, the dc motor 51 stops rotating or rotates in the opposite direction, indicating that the position limit has been reached. In actual use, the distance between the first and second travel switches 552 and 553 is 5 mm.
Because the focusing device of the infrared thermal imager has high requirements on precision in adjustment, as a preferred embodiment, the speed reducer 56 is arranged between the direct current motor 51 and the lead screw 52, the speed reducer 56 and the direct current motor 51 are both fixedly arranged on the motor bracket 57, and the direct current motor 51 is fixed on the motor bracket 57, so that the shake of the direct current motor 51 in the working process can be reduced, after the speed reducer 56 is added, the rotating speed of the lead screw 52 is slowed down, and the adjustment precision of the movable module 3 is improved.
Because the direct current motor 51 vibrates greatly in the working process and affects the adjustment of the movable module 3 certainly, as a preferred embodiment, the motor support 57 is fixedly arranged on the motor transmission port 12, the travel stop bar 551 extends into the main housing 1 from the motor transmission port 12, the motor buckling cover 13 covers the motor transmission port 12, the direct current motor 51 is not arranged in the main housing 1, and the adjusting effect on the movable module 3 is reduced.
In order to improve the adjustment stability and accuracy of the movable module 3, as a preferred embodiment, the moving guide 54 includes two guide posts 541 and a guide sleeve 542, one guide post 541 is disposed on one side of the moving fixing bracket 312, the other guide post is disposed on the other side of the moving fixing bracket 312, one end of the guide post 541 is slidably disposed in the guide sleeve 542, the other end of the guide post 541 is fixedly disposed on the moving fixing bracket 312, and the guide sleeve 542 is fixedly disposed on the main housing 1.
One end of the network port 7 extends out of the main shell 1, the other end is electrically connected with the interface board 6, one end of the control power supply port 8 extends out of the main shell 1, the other end is electrically connected with the interface board 6, the interface board 6 and the direct current motor 51 are both electrically connected with the main board 4, the interface board 6 is fixedly arranged in the main shell 1, the control power supply port 8 is used for an external power supply to drive the whole device to work, and the network port 7 is used for carrying out data bidirectional transmission with a computer.
The shutter 32 converts the image signal into an electrical signal and transmits the electrical signal to the signal board 33, a flat cable is arranged between the signal board 33 and the main board 4, the signal board 33 transmits the electrical signal to the main board 4 through the flat cable, and the main board 4 is arranged in the main casing 1.
The focusing method of the infrared thermal imager of the invention is introduced as follows:
s1: selecting a lens 2 according to the requirement, and screwing a proper lens 2 on the front cover 11 through threads;
s2: the infrared light captured by the lens 2 reaches the shutter 32, the shutter 32 adjusts the exposure time, then an image is formed on the focal plane 322, the signal board 33 converts the image information into an electric signal to be transmitted to the main board 4, the main board 4 transmits the electric signal to a computer connected with the main board 4 through the network port 7, the computer processes the electric signal, determines the position relationship between the focal plane 322 and the focal point of the lens 2, sends an electric signal of a correction position, the electric signal of the correction position is retransmitted to the main board 4 through the network port 7, the main board 4 drives the direct current motor 51 to rotate, the lead screw 52 is driven by the direct current motor 51 to rotate, at the moment, the movable module 3 moves along the straight line where the lead screw 52 is located until the focal plane 322 coincides with the focal point of the lens 2.
S3: at this time, the infrared light captured by the lens 2 reaches the shutter 32, the shutter 32 adjusts the exposure time, and then an image is formed on the focal plane 322, the signal board 33 converts the image information into an electric signal to be transmitted to the main board 4, the main board 4 transmits the electric signal to a computer connected with the main board through the internet access 7, and the computer decrypts the electric signal and displays the image.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A focusing device of an infrared thermal imager comprises a main shell (1), a lens (2), a movable module (3), a main board (4) and a focal length adjusting device (5), wherein,
the main shell (1) comprises a front cover (11), and the lens (2) is detachably connected with the front cover (11);
the method is characterized in that: the movable module (3) comprises a fixed bracket (31), a shutter (32) and a signal plate (33);
the shutter (32) comprises a detector (321), the detector (321) comprises a focal plane (322), and the focal plane (322) is arranged towards the lens (2);
the shutter (32) is arranged between the signal plate (33) and the lens (2), and the shutter (32) and the signal plate (33) are both fixedly arranged on the fixed support (31);
the focal length adjusting device (5) comprises a direct current motor (51), a lead screw (52) and an anti-backlash bracket (53);
the output end of the direct current motor (51) is connected with a screw rod (52), the screw rod (52) is connected with a clearance eliminating bracket (53) in a thread fit manner, and the clearance eliminating bracket (53) is fixedly arranged on the fixed bracket (31);
the anti-backlash bracket (53) drives the fixed bracket (31) to move back and forth along the straight line where the lead screw (52) is positioned under the driving of the direct current motor (51), so that the focal plane (322) is superposed with the focus of the lens (2);
the shutter (32) converts an image signal into an electric signal and transmits the electric signal to the signal board (33), and a flat cable is arranged between the signal board (33) and the main board (4);
the main board (4) is arranged in the main shell (1).
2. The focusing assembly of an infrared thermal imager as set forth in claim 1, wherein: the fixed support (31) comprises a shutter fixed support (311) and a movable fixed support (312), the shutter (32) is fixedly arranged in the shutter fixed support (311), the signal plate (33) is arranged between the shutter fixed support (311) and the movable fixed support (312), and the anti-backlash support (53) is fixedly arranged on the movable fixed support (312).
3. The focusing assembly of an infrared thermal imager as set forth in claim 2, wherein: the focal length adjusting device (5) further comprises a moving guide device (54), the moving guide device (54) comprises a guide post (541) and a guide sleeve (542), one end of the guide post (541) is slidably arranged in the guide sleeve (542), the other end of the guide post (541) is fixedly arranged on the moving fixing support (312), and the guide sleeve (542) is fixedly arranged on the main shell (1).
4. The focusing assembly of an infrared thermal imager as set forth in claim 3, wherein: the focal length adjusting device (5) further comprises a positioning mechanism (55), wherein the positioning mechanism (55) comprises a travel stop lever (551), a first travel switch (552), a second travel switch (553) and a switch fixing frame (554); the first travel switch (552) and the second travel switch (553) are arranged oppositely, one end of a travel stop lever (551) is arranged between the first travel switch (552) and the second travel switch (553), the other end of the travel stop lever (551) is fixedly arranged on the movable fixing support (312), the first travel switch (552) and the second travel switch (553) are both fixedly arranged on a switch fixing frame (554), and the switch fixing frame (544) is fixedly arranged in the main shell (1).
5. The focusing assembly of an infrared thermal imager as set forth in claim 4, wherein: the main shell (1) further comprises a motor transmission port (12) and a motor buckling cover (13), the stroke stop lever (551) extends into the main shell (1) from the motor transmission port (12), and the motor buckling cover (13) covers the motor transmission port (12).
6. The focusing assembly of an infrared thermal imager as set forth in claim 5, wherein: the focal length adjusting device (5) further comprises a speed reducer (56) and a motor support (57), the speed reducer (56) is arranged between the direct current motor (51) and the lead screw (52), the speed reducer (56) and the direct current motor (51) are both fixedly arranged on the motor support (57), and the motor support (57) is fixedly arranged on the motor transmission port (12).
7. The focusing assembly of an infrared thermal imager as set forth in claim 1, wherein: the front cover (11) is provided with an internal thread, the lens (2) is provided with an external thread, and the front cover (11) is connected with the lens (2) in a threaded fit mode.
8. The focusing device of the infrared thermal imager of claim 1, characterized in that: the main casing is characterized by further comprising an interface board (6), a network port (7) and a control power supply port (8), wherein one end of the network port (7) extends out of the main casing (1), the other end of the network port is electrically connected with the interface board (6), one end of the control power supply port (8) extends out of the main casing (1), the other end of the control power supply port is electrically connected with the interface board (6), the interface board (6) and the direct current motor (51) are both electrically connected with the main board (4), and the interface board (6) is fixedly arranged in the main casing (1).
9. The focusing assembly of an infrared thermal imager as set forth in claim 1, wherein: the lead screw (52) is perpendicular to the focal plane (322).
10. A focusing method of an infrared thermal imaging camera, the focusing device of the infrared thermal imaging camera according to any one of claims 1 to 9, comprising the steps of:
s1: selecting a lens (2) according to the requirement, and screwing a proper lens (2) on the front cover (11) through threads;
s2: the infrared light captured by the lens (2) reaches the shutter (32), the shutter (32) adjusts the exposure time, then an image is formed on the focal plane (322), the signal board (33) converts the image information into an electric signal to be transmitted to the main board (4), the main board (4) transmits the electric signal to a computer connected with the main board through the network port (7), the computer processes the electric signal, judges the position relation between the focal plane (322) and the focal point of the lens (2), and sends out an electric signal of a correction position, the electric signal of the correcting position is retransmitted to the main board (4) through the network port (7), the main board (4) drives the direct current motor (51) to rotate, the lead screw (52) is driven by the direct current motor (51) to rotate, and at the moment, the movable module (3) moves along the straight line where the lead screw (52) is located until the focal plane (322) coincides with the focal point of the lens (2).
S3: at the moment, infrared light captured by the lens (2) reaches the shutter (32), the shutter (32) adjusts exposure time, then an image is formed on the focal plane (322), the signal board (33) converts image information into an electric signal to be transmitted to the main board (4), the main board (4) transmits the electric signal to a computer connected with the main board through the network port (7), and the computer decrypts the electric signal and displays the image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210626276.5A CN114995013A (en) | 2022-06-02 | 2022-06-02 | Focusing device and method for infrared thermal imager |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210626276.5A CN114995013A (en) | 2022-06-02 | 2022-06-02 | Focusing device and method for infrared thermal imager |
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| CN114995013A true CN114995013A (en) | 2022-09-02 |
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| CN202210626276.5A Pending CN114995013A (en) | 2022-06-02 | 2022-06-02 | Focusing device and method for infrared thermal imager |
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| WO2011153163A2 (en) * | 2010-06-02 | 2011-12-08 | 3Ality Digital, Llc | Anti-backlash bracket |
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| KR20150098485A (en) * | 2014-02-20 | 2015-08-28 | 주식회사 콕스 | Automatic focuser of thermal imaging camera and method thereof |
| CN206060928U (en) * | 2016-07-28 | 2017-03-29 | 厦门力鼎光电技术有限公司 | A kind of displaceable video camera of imageing sensor |
| CN208638465U (en) * | 2018-08-28 | 2019-03-22 | 杭州海康威视数字技术股份有限公司 | A kind of automatic focusing thermal infrared imaging camera |
| CN216210171U (en) * | 2021-10-29 | 2022-04-05 | 广州飒特红外科技有限公司 | Automatic focusing infrared thermal imager |
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