Circular Graduated Neutral Density Filter | UltraOpto
Product Overview
UltraOpto Circular Graduated Neutral Density Filter (GND Filter) is specially designed for precision light intensity control scenarios. It can be directly driven to rotate by a stepper motor, achieving linear variation of optical density with angle, and providing a high-precision and high-stability light attenuation solution for automated optical systems.
Its linear variation characteristic greatly simplifies the motor motion control logic. When used in double-sided reverse combination, it can further expand the attenuation range, and easily realize uniform light spot output and wide-range light intensity adjustment. The product supports various sizes and customization needs, and is widely applicable to fields such as industrial imaging, laser systems, photometric calibration, and spectral analysis.
Core Advantages
High Attenuation Resolution:
Optical density changes linearly with angle, enabling precise continuous light intensity adjustment with high control accuracy.
Control-friendly Design:
The linear optical density variation characteristic makes the motion control of stepper motors simpler and the response smoother.
Wide Adaptability Range:
Outer diameter covers Φ25mm~Φ200mm, allowing flexible selection according to system requirements.
Customization Capability:
Supports customization of linear variation of transmittance with angle to adapt to special application scenarios.
Excellent Optical Performance:
Low parallelism error and low linearity deviation ensure the uniformity and consistency of light attenuation.
Technical Parameters
Application Scenarios
Industrial Imaging and Machine Vision Systems:
Dynamic light intensity adjustment to optimize imaging contrast and exposure control.
Laser Systems:
Uniform attenuation and stable control of laser power to protect detectors and optical components.
Luminance and Chrominance Calibration:
Attenuation of standard light sources for linear response calibration of cameras and sensors.
Spectral Analysis and Scientific Research Experiments:
Broadband light intensity adjustment to meet the light intensity requirements of different experimental conditions.
Customization Services
UltraOpto can provide personalized customization solutions for substrate materials, size specifications, coating ranges, optical density change curves and wavelength ranges according to your specific needs, helping your optical system achieve optimal performance.
For more technical details or customized solutions, please feel free to contact our technical team.
