【 CIOE Outlook 】 Unveiling Ideal: High precision Optical System Installation and Adjustment

Introduction:

In the precise assembly and adjustment of optical systems, the importance of the alignment center as a necessary tool is self-evident. With the rapid development of the optical industry and the continuous improvement of imaging quality requirements, traditional passive tuning methods are no longer able to meet the needs of medium to high optical systems. Today, we will delve into the secrets of Dingxin - the "black technology" in the field of optical tuning, and see how it helps lens imaging quality reach a new level.

Application background:

The centering and adjustment of lenses is the foundation of optical system adjustment and a key step in determining imaging quality. Traditional optical systems have simple configurations, fewer lenses, loose installation and adjustment tolerances, and low precision requirements. They often use passive installation and adjustment methods with mechanical machining tolerance matching. However, with the increasing complexity of optical systems and the growing demand for imaging quality, traditional methods are no longer sufficient. Middle and high optical systems have adopted active adjustment methods, using precision instruments such as alignment centers to finely adjust the position of the lens, ensuring the overall optical axis of the lenscoaxialityReaching the highest level.

Classification:

Dingxin is mainly divided into three categories based on its working principle: transmissive, dual path, and reflective.

• Transmissive fixation center：By measuring the motion trajectory of the image point after the beam passes through the lens, the eccentricity can be analyzed, but it can only measure the overall effect of the lens and cannot be measured separately for each surface.

• Dual light path fixation:Measure the upper and lower surfaces of the lens separately for the upper and lower light pathsCurvature centerCalculate the optical axis deviation, but it is only applicable to single lenses, and the calibration of the upper and lower optical paths is prone to systematic errors.

• Reflective fixation center:Based on the rotating shaft system, using an autocollimator andFront mirrorCooperate to measure the motion trajectory of the image point after the reflection of the light beam on the surface of the lens. The sensitivity is high, but there are shortcomings such as the strength of the light source and the small number of test surfaces.

Highlight Introduction: Opto Alignment Lens Laser Alignment System (LAS)

LAS from Opto Alignment Company ™ The system adopts a laser light source and reflective measurement principle, which solves many shortcomings of traditional alignment, especially suitable for high-precision installation and adjustment of advanced lenses. This system not only has high measurement accuracy, but also can be equipped with infrared light sources of various bands to complete the detection and adjustment of infrared lenses. The switching of light sources can be completed by software operation, greatly improving work efficiency and flexibility.

Opto Alignment was founded in 1992 and is a member of SPIE, providing complete solutions from design to performance testing for the optical manufacturing industry. Its business coverage is extensive, with customers covering multiple fields such as aerospace, astronomy, military, medical, and semiconductor, including companies such as NASA, Honeywell, and Boeing. In China's major optical manufacturing centers, LAS ™ The system also has a wide range of application examples.

Measurement principle:

LAS ™ The system precisely aligns the laser light source's optical axis withair bearingRotation axis, measure the eccentricity between the optical axis of the test mirror and the geometric axis of the outer edge. When rotating the test mirror, the CCD captures the image formed by the curvature center (or mirror vertex) and synchronously draws a circle. Finally, the optical axis deviation is calculated by drawing the circle diameter.

Technical highlights:

Light source and detector system:Using a single wavelength laser light source with high energy density and adjustable light intensity, it is easy to install and adjust more than 25 optical components. Support switching between light sources in various bands from near-infrared to far-infrared to meet the detection needs of different lenses.

Turntable and tilt adjustment:The tilt adjustment table adopts high-precision air floating turntable and spherical angle measuring instrument working principle to ensure measurement accuracy and efficiency.

Measurement of component thickness and air gap:Equipped with the world's top short coherence interferometer module, with an accuracy of up to 0.1um, it can test various parameters of internal components of the lens.

Intelligent software:supportZemaxImporting with CodeV, automatically planning display range, providing multiple ways to display measurement results, making it easy for operators to quickly judge and adjust.

The LAS system has a wide range of configurations, including laser sources with multiple wavelengths, high-precision objective lenses, air bearings, work platforms, and tilt/x/y adjustment platforms, which can be customized according to actual needs. Its light source system, adjustment platform, software and other aspects have performed well among similar products, and are widely used in multiple fields at home and abroad. It is an ideal optical system installation, adjustment and testing platform.

In today's increasingly complex optical systems, optical alignment devices are playing an increasingly important role as key tools for high-precision tuning. Opto AlignmentLAS™The system has won wide recognition in the industry for its extraordinary performance and extensive application cases. We believe that Dingxin will continue to play an irreplaceable role in the future installation and tuning of optical systems, helping optical technology reach new heights.

Welcome to CIOE Daimei booth 3A21 to learn more aboutOpto AlignmentLAS™Information about the system.

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