Endoscope device for internal imaging of high-temperature kiln

Abstract

The invention discloses an endoscope device for internal imaging of a high-temperature kiln. The endoscope device comprises a normal incidence window, an oblique incidence window, an endoscope objective lens and an endoscope relay lens; the normal incidence window is used for isolating the objective lens of the endoscope from external high temperature while ensuring light transmission; the oblique incidence window converts lateral oblique incidence light into normal incidence light to enter the objective lens, and meanwhile the objective lens of the endoscope is isolated from external high temperature. The endoscope objective lens is located behind the normal incidence window or the oblique incidence window, and the endoscope objective lens images incident light in the view field range to the position in front of the endoscope relay lens. The endoscope relay lens extends an image formed by the endoscope objective lens for subsequent imaging. By means of the mode that the oblique incidence window and the normal incidence window are combined, the same endoscope objective lens and the same endoscope relay lens are adopted for imaging, forward 180-degree dead-angle-free imaging is achieved, the high-temperature working condition in the high-temperature kiln is overcome, and while normal work of the kiln is not affected, real-time imaging is conducted on the interior of the kiln, and defects in the kiln are found in time.

Description

[0001] This application is a divisional application of a patent application titled "An Endoscope Device for Imaging Inside a High-Temperature Kiln". The filing date of the original application is April 20, 2020, and the application number is 202010313670.4. technical field [0002] The invention relates to the field of traditional optical design, in particular to an endoscope device for imaging inside a high-temperature kiln. Background technique [0003] High-temperature kiln endoscopes need to work in the high-temperature environment inside the kiln, and the endoscope needs to have a certain length to keep the camera equipment away from the high-temperature kiln. In addition, the diameter of the endoscope should not be too large, which makes the high-temperature kiln The design of the speculum needs to consider more material and external dimension factors. [0004] Due to the extremely high temperature inside the kiln, even with a water cooling device, the endoscope object...

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide an endoscope device for internal imaging of high-temperature kilns, which can solve the problem that ordinary lenses are difficult to detect during the operation of high-temperature kilns due to the high internal temperature. Imaging the interior of the kiln during the operation of the high-temperature kiln, the technical problem that internal defects cannot be found in time

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