A focusing device and an infrared thermal imager
An infrared thermal imager and image sensor technology, which is applied in focusing devices, image communication, television, etc., can solve the problem that the adjustment of the focal length cannot be realized, the movement resistance of the image sensor base is increased, and it is difficult to have multiple guide rods 60 problems such as being parallel to each other to avoid inability to focus and achieve the effect of focal length
Active Publication Date: 2021-07-20
HANGZHOU HIKMICRO SENSING TECH CO LTD
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Problems solved by technology
[0004] In the above solution, due to the limitations of parts processing and installation adjustment, it is difficult to ensure that the multiple guide rods 60 are parallel to each other. Once the multiple guide rods 60 are not parallel to each other, the image sensor seat 40 will be stuck. Impossibility of movement or dramatic increase in resistance to movement, making it impossible to adjust the focal length
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[0034] The present invention provides a focusing device and an infrared thermal imager. The focusing device avoids the failure of focusing caused by the inability to ensure the parallelism of multiple guide rods, and realizes the adjustment of the focal length.
[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] see figure 2 , figure 2 A schematic structural view of the focusing device provided by the present invention is shown.
[0037] Depend on figure 2 It can be seen that the focusing device ...
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An embodiment of the present invention provides a focusing device and an infrared thermal imager. The focusing device includes an image sensor, a moving mechanism, a fixing mechanism, a driving mechanism and a guiding mechanism; the image sensor is fixed on the moving mechanism, and the moving mechanism It includes a leading post whose center line coincides with the optical axis, and the fixing mechanism is provided with a leading post cover that fits on the leading post; the guiding mechanism includes an auxiliary guide post and an auxiliary guide post spring that fits on the auxiliary guide post, and one end of the auxiliary guide post wears The fixed mechanism is fixed to the moving mechanism, and the other end is provided with a guide post boss, and the auxiliary guide post spring is pre-compressed between the guide post boss and the fixed mechanism; the driving mechanism includes a screw mechanism and a drive motor fixed to the screw mechanism , the screw mechanism is fixed on the leading pillar sleeve, the screw rod of the screw mechanism is inserted into the leading pillar sleeve and abuts against the leading pillar, and the driving motor drives the screw rod to move along the optical axis. In the present invention, only one main pillar is used, and the parallelism of the main pillar does not need to be adjusted to realize the adjustment of the focal length.
Description
technical field [0001] The invention relates to the technical field of image acquisition equipment, in particular to a focusing device and an infrared thermal imager. Background technique [0002] see figure 1 , the camera device includes a front cover 10 , a bottom cover 20 , an image sensor 30 , an image sensor seat 40 and a motor 50 . The image sensor 30 is fixed on the image sensor seat 40, the image sensor seat 40 is connected with the front cover 10 through a plurality of guide rods 60, the guide rods 60 are arranged parallel to the optical axis direction of the lens, the image sensor seat 40 can be Slide on guide rod 60. The image sensor base 40 is connected to the bottom cover 20 through a spring 70 . The motor 50 is fixed on the bottom cover 20 and abuts against the image sensor seat 40 . [0003] When focusing, the motor 50 gives the image sensor seat 40 a driving force toward the lens, and the spring 70 gives the image sensor seat 40 a pulling force away from ...
Claims
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IPC IPC(8): H04N5/225H04N5/33G03B13/32
CPCH04N5/33G03B13/32H04N23/54H04N23/55
Inventor 蒋红卫
Owner HANGZHOU HIKMICRO SENSING TECH CO LTD