Transmission-Type Decentration Tester——Precision Optical Instrument for Lens and Optical Centering Measurement

The Transmission-Type Decentration Tester is a professional optical metrology system designed for accurate measurement of lens and optical component decentration and tilt angle.
It is widely used in optical lens inspection, lens cementing, and optical assembly processes, both in R&D and mass production environments.

By adopting a collimated optical measurement principle combined with a zoom reticle system, this instrument delivers stable, repeatable, and high-precision decentration measurements across a wide range of lens sizes and focal lengths—addressing key limitations of conventional transmission-type decentration testers.

· Optical lens centering and decentration measurement

· Decentration control during lens cementing processes

· Lens assembly, alignment, and adjustment

· nspection of positive lenses, negative lenses, and plano optical elements

· In-process quality control for optical component manufacturing

Why Professional Transmission-Type Decentration Measurement Matters

In optical manufacturing and assembly, lens or optical axis misalignment directly affects system performance, including image quality, optical axis consistency, and assembly yield.

In real-world production environments, manufacturers often encounter the following challenges:

· Limited measurement range of traditional transmission-type decentration testers

· Variable reticle scale depending on the tested lens, reducing measurement consistency

· Complex focusing procedures leading to low inspection efficiency

· Long-term visual observation causing operator fatigue and subjective error

These issues become especially critical in high-volume lens production, cemented lens assembly, and consistency control across batches.

Core Technology Advantages | Addressing the Limitations of Conventional Transmission-Type Decentration Testers

This Transmission-Type Decentration Tester is based on a collimated optical detection principle, enabling precise measurement through:

· A zoom optical system that provides a stable and fixed reticle scale

· A collimation system that accurately detects lens tilt and decentration angle

Unlike conventional designs, this architecture maintains a constant reticle scale regardless of lens specifications, significantly improving measurement repeatability and comparability while expanding the supported lens diameter and focal length range.

Key Features & Benefits：

1. Fixed Reticle Scale

    The reticle scale remains constant and independent of the tested lens, ensuring high measurement consistency across different lens types.

2. Wide Measurement Range

    Supports a broad range of lens diameters and focal lengths, suitable for diverse optical components and applications.

3. High Measurement Accuracy

    Resolution of 15 arcseconds per division, meeting the precision requirements of modern optical manufacturing.

4. Electronic Reticle Display

    Equipped with an electronic reticle and LCD display, reducing human visual error and enabling operation in darkroom environments.

5. High Efficiency and Easy Operation

    For lenses of the same type, only the first lens requires focusing, significantly improving inspection throughput.

6. LED Illumination System

    Long service life and stable illumination, ideal for continuous industrial use.

Technical Specifications

For more information, please contact: sales@colorspace.com.cn