Abstract: The embodiments of the present application provides a method and apparatus for preventing heat damage to a thermal imaging camera. The method includes: obtaining a thermal imaging picture of the thermal imaging camera; detecting whether the thermal imaging picture shows that a high-temperature object appears in the picture of the thermal imaging camera; confirming that the thermal imaging picture shows that a high-temperature object appears in the picture, generating a heat damage alarm signal, and closing a baffle if the baffle is not closed currently. In the present application embodiments, after detecting a heat damage alarm signal, that is, after detecting that a high-energy radiating object enters an image picture, the baffle is closed immediately, thereby avoiding the risk of the sensor being permanently burnt due to directly face to the high-energy radiating object.

Abstract: A thermal imaging device, comprising: a housing (3), which comprises a front housing (31); a lens mount (1), fixedly connected to the front housing (31), a sealing gasket (2) being provided between the front housing (31) and the lens mount (1); a lens (4), threaded with the lens mount (1); and a manual lens focusing structure, comprising a focusing wheel (8) and an axial positioning structure, wherein the focusing wheel (8) and the lens (4) are connected to each other in a synchronous rotation and relative axial movement mode, and the axial positioning structure implements axial positioning on the focusing wheel (8). In the process of focusing, the lens (4) axially moves with respect to the focusing wheel (8), and the focusing wheel (8) may not move axially due to the axial positioning structure.

Abstract: The embodiments of the present application provides a method and apparatus for preventing heat damage to a thermal imaging camera. The method includes: obtaining a thermal imaging picture of the thermal imaging camera; detecting whether the thermal imaging picture shows that a high-temperature object appears in the picture of the thermal imaging camera; confirming that the thermal imaging picture shows that a high-temperature object appears in the picture, generating a heat damage alarm signal, and closing a baffle if the baffle is not closed currently. In the present application embodiments, after detecting a heat damage alarm signal, that is, after detecting that a high-energy radiating object enters an image picture, the baffle is closed immediately, thereby avoiding the risk of the sensor being permanently burnt due to directly face to the high-energy radiating object.

Abstract: An embodiment of this application discloses a handheld infrared imager that includes a cell and a batter cover. The cell is provided with a circumferential positioning hole, a circumferential positioning protrusion is correspondingly provided at an end of the battery cover, and the circumferential positioning protrusion and the circumferential positioning hole are engaged with each other to implement relative circumferential positioning. A longitudinal positioning protrusion is provided on an outer peripheral side wall of the cell, a longitudinal positioning groove is correspondingly provided on a sidewall of the battery cover, and the longitudinal positioning protrusion and the longitudinal positioning groove are engaged with each other to implement relative longitudinal positioning.

Abstract: An imaging device and a lens focusing method are provided. The device includes a focusing wheel, two photoelectric sensors, at least three gratings, a processor, a motor, and a lens, the gratings are distributed on an inner sidewall of the focusing wheel, grating gaps having a same width exist between adjacent gratings. The processor determines a first electrical signal generated by a first photoelectric sensor and a second electrical signal generated by a second photoelectric sensor; determines a current rotation direction of the focusing wheel based on the first electrical signal and the second electrical signal as well as a preset parameter table; and determines a current rotation angle of the focusing wheel based on the number of level jumps of the first electrical signal or the second electrical signal.