Long focus lens mechanical environment reliability, multi axis structural electromagnetic vibration

Long focus lens mechanical environment reliability, multi axis structural electromagnetic vibrationIntroduction

1、 Overview of Core Testing

Multi axis electromagnetic vibration testing of telephoto lenses is a comprehensive mechanical environment reliability verification for precision telephoto optical lenses. It relies on a multi axis electromagnetic vibration test bench (such as the Qinzhuo series) to simulate the multidimensional complex vibration conditions faced by the lens throughout its entire life cycle. Through independent or cyclic vibration of the X-axis (horizontal left and right), Y-axis (horizontal front and rear), and Z-axis (vertical up and down), the structural stability, optical performance consistency, and mechanical durability of the lens are comprehensively assessed. It is a core testing project for the research and development, factory quality inspection, and industry certification of telephoto lenses at Gao end.

The test sample focuses on a large aperture telephoto precision optical lens, which integrates multiple layers of lens groups, focusing motors, focusing transmission structures, and other precision components. It is widely used in fields such as security high-definition monitoring, vehicle telephoto, industrial machine vision, aviation observation, and professional film and television photography. Due to its precise structure and high optical path accuracy requirements, it has strict industry standards for multi-directional anti vibration reliability.

2、 Testing equipment and principles

The core equipment for this test is a multi axis electromagnetic vibration test bench, which adopts electromagnetic excitation drive technology. Unlike traditional mechanical vibration equipment, it has the core advantages of fast vibration response, small waveform distortion, high parameter accuracy, and smooth and impact free operation. It can achieve three-axis free switching and multi-mode compatibility testing.

The core principle of the equipment is to generate controllable power through electromagnetic coils, drive the table to drive the telephoto lens to complete multi-directional vibration, and accurately adjust the vibration frequency (suitable for the full frequency range of 10Hz~2000Hz, covering different scenarios such as transportation bumps and equipment working conditions), acceleration (adjustable from 1g~20g, simulating different degrees of harsh vibration environments), amplitude and testing duration. It supports full testing modes such as sine fixed frequency, sine sweep frequency, random vibration, durability cycle, etc. The table has strong rigidity and high clamping accuracy, and can stably fix heavy telephoto lenses. The test data can be collected and traced throughout the process, fully adapting to the strict testing requirements of precision optical devices.

3、 Core testing items and verification objectives

1. Verification of optical path stability (core focus)

By using three-axis full dimensional vibration, the stability of the multi-layer lens group, lens pressure ring, and fixed module inside the lens under multi-directional alternating vibration is inspected. The focus is on identifying hidden dangers such as lens displacement, optical axis offset, lens group loosening, and optical path deviation, verifying that there is no abnormal drift in the imaging clarity, distortion rate, color difference, and focusing accuracy of the lens during the entire vibration process, ensuring stable optical imaging performance in complex vibration environments.

2. Durability and reliability testing of mechanical structures

Verify the anti vibration fatigue ability of the metal barrel, focusing ring, zoom structure, bayonet connection, fixing screws, and sealing components of the telephoto lens, investigate structural deformation, component loosening, thread loosening, barrel cracking, mechanical transmission jamming and other defects caused by multi-directional vibration, evaluate the long-term mechanical structure life of the lens, and expose potential problems in structural design and assembly processes in advance.

3. Stability testing of built-in component functions

For intelligent telephoto lenses with autofocus motors, anti shake components, and aperture drive structures, verify the stability of motor operation and the reliability of transmission mechanism in multi-directional vibration environments, ensuring no stuttering, jamming, or functional failure. At the same time, detect the stability of circuit connections to avoid problems such as poor contact and signal interruption caused by vibration.

4. Verification of adaptability to the entire scene environment

Accurately reproduce the real service environment of telephoto lenses in logistics transportation (long-distance bumps), vehicle mounted (driving vibrations), outdoor working conditions (equipment shaking), long-term operations (multi-dimensional alternating vibrations), etc., complete a comprehensive mechanical environment reliability assessment, and ensure that the lens can work stably in various complex scenarios.

4、 Adapting to industry standards and application value

1. Adapt to industry standards

Wan fully complies with the testing standards for optical imaging, automotive, security and other industries, including GJBguo military standard for vibration environment testing of optical components, GB/T mechanical environment reliability testing specifications for electronic optical products, factory quality inspection standards for automotive lenses and security monitoring equipment, and reliability verification specifications for industrial vision and aviation optical components, which can meet the testing and certification needs of different industries.

2. Core application value

Through multi axis electromagnetic vibration testing, potential defects of telephoto lenses can be screened from the full dimensions of optical path, mechanical structure, built-in functions, and assembly process, optimizing product structure design and assembly schemes, significantly improving the quality stability of lenses during transportation, installation, and long-term use, ensuring imaging accuracy and service life, and helping Gao end precision telephoto lenses achieve standardization and normalization in research and development, mass production, and factory certification, enhancing product core competitiveness.

Long focus lens mechanical environment reliability, multi axis structural electromagnetic vibration