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  • Quanhom 2023 Exhibition Review: Practitioner of Infrared Thermal Imaging Technology
    Quanhom 2023 Exhibition Review: Practitioner of Infrared Thermal Imaging Technology
    Quanhom achieved a successful conclusion to its 2023 exhibitions and yielded significant benefits.
    Dec 20,2023
  • Quanhom's Participation in International Exhibitions
    Quanhom's Participation in International Exhibitions
    Quanhom has always been active in international exhibitions related to thermal imaging technology.
    May 19,2022
  • Image Quality Evaluation-Aberration Curves
    Image Quality Evaluation-Aberration Curves
    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).
    Dec 4,2024
  • What is the sensor size?
    What is the sensor size?
    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.
    Nov 18,2024
  • Structural design of continuous zoom lens
    Structural design of continuous zoom lens
    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.
    Oct 31,2024
  • Quanhom at the CIOE(2024) in Shenzhen
    Quanhom at the CIOE(2024) in Shenzhen
    Quanhom participated in the 25th CIOE (2024) China International Optoelectronics Exposition from 11-13 September and had a full harvest!
    Oct 16,2024
  • Infrared Optical System Structure
    Infrared Optical System Structure
    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.
    Sep 19,2024
  • What are the general design principles of the mounting base of the infrared optical lens?
    What are the general design principles of the mounting base of the infrared optical lens?
    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.
    Jul 23,2024
  • Thread parameters in EO systems
    Thread parameters in EO systems
    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.
    Feb 2,2024
  • What are the infrared optical materials?
    What are the infrared optical materials?
    Infrared optical materials are typically classified into three main categories: infrared optical glass, infrared optical plastics, and infrared optical crystals.
    Jan 4,2024
  • What Are Bad Pixels, Ghost Images And Vignetting effect In Infrared Imaging?
    What Are Bad Pixels, Ghost Images And Vignetting effect In Infrared Imaging?
    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.
    Nov 14,2023
  • The Working Principle and Composition of Infrared Sensor
    The Working Principle and Composition of Infrared Sensor
    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.
    Aug 5,2022
  • The Analysis of Selecting Infrared Bands
    The Analysis of Selecting Infrared Bands
    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.
    Aug 5,2022
  • Infrared Thermal Imaging Market is in Full Swing: Cost Reduction, Standardization, Intelligence
    Infrared Thermal Imaging Market is in Full Swing: Cost Reduction, Standardization, Intelligence
    Infrared thermal imaging technology has gradually become a more mainstream technology in the past few decades. With the increasing popularity of handheld thermal imaging cameras, there is a growing awareness of the industrial benefits of this technology.

    Jun 11,2022
  • Application of Infrared Imaging Technology in Security Field
    Application of Infrared Imaging Technology in Security Field
    Infrared thermal imaging is an image formed by detecting infrared energy emitted by a person or object. Applications in security include fire monitoring, camouflage, and concealed target recognition, and other fields. The following is a detailed introduction for you.

    Jun 1,2022
  • Six Elements of Selecting Infrared Thermal Imager
    Six Elements of Selecting Infrared Thermal Imager
    Thermal imagers are widely used in many industries. This article introduces six elements of choosing infrared thermal imagers. Through this article, we hope to help your company find a high-quality infrared thermal imager that meets the needs of your applications.

    May 27,2022
  • How Do Optical Designers Judge the Performance of Optical Lenses?
    How Do Optical Designers Judge the Performance of Optical Lenses?
    While aberration graphs are good for providing an optical designer with a lens' performance, it is usually an objective criterion for the user or evaluator of the lens. The following article briefly describes the optical designer's method for determining the performance of an optical lens.

    May 20,2022
  • How to Choose|Cooled or Uncooled Thermal Imaging Camera
    How to Choose|Cooled or Uncooled Thermal Imaging Camera
    Over the years, R&D experts have been keen to use thermal imaging cameras in a wide range of applications. However, not all thermal imaging cameras have the same quality features. Today, let's take a look at how to choose between cooled and uncooled thermal imaging cameras!

    May 13,2022
  • Application of Infrared Thermal Imaging Technology in Civil Field
    Application of Infrared Thermal Imaging Technology in Civil Field
    Thermal imaging technology is playing an important role in many fields, such as civil aviation, security, border defense and automation. This paper briefly introduces the basic elements and characteristics of infrared thermal imaging technology and then discusses in detail its application in seven fields.
    Apr 29,2022
  • Progress and Prospect of Infrared Imaging Optical System
    Progress and Prospect of Infrared Imaging Optical System
    With the development of infrared focal plane detection technology, new requirements have been put forward for the design of infrared imaging optical systems and the processing of optical components. This paper briefly describes the progress and prospects of three generations of infrared imaging optical systems.

    Apr 23,2022
  • Research on Infrared Imager Used in Submarine Exploration Technology
    Research on Infrared Imager Used in Submarine Exploration Technology
    With the development of diving technology, infrared diving technology has attracted more and more attention. This paper discusses the principle of infrared diving, analyzes the index requirements of instruments in infrared diving technology. Finally, the main key technologies are given.

    Apr 15,2022
  • Design of Infrared Dual-field Focusing System Based on DSP
    Design of Infrared Dual-field Focusing System Based on DSP
    Infrared dual-field systems are widely used in optoelectronic reconnaissance equipment. In this paper, according to the working characteristics of the dual-field infrared optical system, a set of optical lens focusing system based on DSP is designed.

    Apr 12,2022
  • Optical System Design of Dual-band/dual-field Panoramic Aerial Camera
    Optical System Design of Dual-band/dual-field Panoramic Aerial Camera
    In this paper, a visible light/infrared dual-band dual-field imaging optical system for panoramic aerial cameras is designed. The optical system has the advantages of compact structure, small volume, lightweight, and low cost.



    Apr 1,2022
  • Infrared Zoom Lens System for Target Detection
    Infrared Zoom Lens System for Target Detection
    This article describes an infrared (IR) zoom lens gadget designed to detect missile signatures at 8 to 13 Bin wavelengths.

    Mar 25,2022
  • Design of Airborne Miniaturized Middle Wavelength Infrared Continuous Zoom Optical System
    Design of Airborne Miniaturized Middle Wavelength Infrared Continuous Zoom Optical System
    In order to meet the requirements of the airborne photoelectric system for the miniaturization and light weight of the infrared thermal imager optical system, this paper adopts the combination of the front-end afocal expansion magnification lens and the rear-end continuous zoom optical system to achieve 22x continuous zoom from 30 to 660mm. optical system.
    Mar 18,2022
  • Design and Realization of Light and Small Long-wave Infrared Optical System
    Design and Realization of Light and Small Long-wave Infrared Optical System
    According to the index requirements and platform constraints of the instrument, Quanhom proposes a light, small, and compact catadioptric optical structure that simplifies the main optical form for the application of refrigeration detectors, which is suitable for mass-produced UAV optoelectronic pod long-wave infrared cameras.
    Mar 10,2022
  • A Novel Step-Zoom LWIR Dual Field-of-View Optical System Design
    A Novel Step-Zoom LWIR Dual Field-of-View Optical System Design
    In this article, for the 320×256 long-wave staring focal plane detector, a novel zoom mode is used, and a secondary imaging dual-field optical system is designed with only 5 lenses.
    Feb 26,2022
  • A Review of Athermalized Infrared Imaging Technology Based on Wavefront Coding
    A Review of Athermalized Infrared Imaging Technology Based on Wavefront Coding
    In this article, the theory and method of wavefront-encoded infrared imaging are studied, and several prototypes of wavefront-encoded infrared imaging systems are developed.
    Feb 17,2022
  • Design of Long-wavelength Infrared Athermalization Lens for Large-array Detector
    Design of Long-wavelength Infrared Athermalization Lens for Large-array Detector
    In this article, a long-wave infrared optical athermal lens is designed to meet the needs of large area array detectors, athermal design of high imaging quality and long-wave infrared lenses with medium and long focal lengths.
    Feb 11,2022
  • Design of a Long Wave Infrared Double-Linkage Continuous Zoom Optical System
    Design of a Long Wave Infrared Double-Linkage Continuous Zoom Optical System
    In this article, based on the 640×512 long-wave cooled infrared detector, which has been maturely applied, a dual-group linkage long-wave infrared continuous zoom optical system is designed.
    Jan 20,2022