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Quanhom achieved a successful conclusion to its 2023 exhibitions and yielded significant benefits.

Quanhom has always been active in international exhibitions related to thermal imaging technology.

In 2024, Quanhom actively participated in several major exhibitions in the field of infrared optics, fully showcasing our technological strength and innovative capabilities. We engaged in in-depth exchanges with industry experts, scholars, and customers from across the country, sharing Quanhom's latest research achievements in infrared imaging, sensors, and optical materials.

Spherical aberration is a type of monochromatic aberration for axial points, where rays at different angles intersect the optical axis at various points after passing through a lens, deviating from the ideal image point. In a spherical aberration curve, the vertical axis represents aperture, while the horizontal axis denotes spherical aberration (or chromatic spherical aberration).

Sensor size refers to the diagonal length of the sensing area on an industrial camera or image sensor that receives light signals, usually expressed in inches. However, the inch here is not the conventional definition of 1 inch equals 25.4 mm, but a historical standard, originally referring to the size of early camera tubes, approximately 16mm.

The continuous zoom lens works on the principle that the focal length of its optical system can be changed continuously within a certain range, and the image plane position remains unchanged during focal length adjustment. When it is not possible to change the focal power of the optical system directly, changes in focal length can only be achieved by adjusting the distance between each lens group, which is the fundamental principle of the zoom optical system.

Quanhom participated in the 25th CIOE (2024) China International Optoelectronics Exposition from 11-13 September and had a full harvest!

Traditional infrared optical structures can be divided into three types: refractive, reflective, and catadioptric. Modern new infrared optical structures can be divided into three types: refractive-diffractive hybrid system, off-axis three-mirror system, and dual-FOV optical system.

The bore diameter of the mounting hole of the infrared lens (D) should be larger than the outer diameter of the lens (d), and generally, for optic lenses, D is larger than d by 0.4 mm. On special occasions where there is a high demand of coaxality or athermalized design of the lens, the size of the mounting hole should be determined according to specific situations. The gap between them is for easier installation, and some silica gel can be filled in the gap to keep the lens from damage.

Threads are indispensable elements within EO systems, especially infrared lenses, orchestrating seamless interaction among subsystems. Their efficient management enhances system responsiveness and real-time processing capabilities. Optimal thread utilization is paramount for ensuring the reliability and effectiveness of EO systems across diverse operational scenarios.

Infrared optical materials are typically classified into three main categories: infrared optical glass, infrared optical plastics, and infrared optical crystals.

This article will introduce several imaging phenomena that often occur in infrared imaging - bad pixels, ghost effect, and vignetting effect. And some methods to solve these defects are given, such as: non-uniformity correction, compensation, SDRAM and FLASH.

The advantage of infrared sensor engineering design plays an important role in the performance of the whole system. Infrared imaging technology with wavelengths ranging from 3 to 5 μm and 8 to 12 μm has always been the focus of the development of infrared imaging technology. Which of these two bands is superior in long-range detection? This issue has been under discussion since the 1970s, showing its importance.

Infrared sensor is one of the main functional units of infrared system. Its main task is to detect various dynamic and static targets, and transmit the detected target signals to infrared information and image processing unit for processing. So this article briefly introduces the working principle and composition of infrared sensor.