Sensing and Imaging Applications


The fastest, easiest to use polarimeters in the business are snapshot cameras with micropolarizer grids placed directly on the imaging sensor. 4D Technology was the first to go to market with these products, and our expertise goes back decades. PolarCam polarimetery cameras, with PolarView software, provide real-time display and calculation of key polarization parameters.


Quantify Degree of Linear Polarization (DoLP), Angle of Linear Polarization (AoLP), linear Stokes parameters (S0, S1 and S2) and many more relevant parameters. The many included tools process and analyze the data, then you can save images and movies of each parameter for comprehensive analysis.

Read More>> What is polarization? What is polarimetry?

Birefringence Measurement

4D snapshot micropolarizer cameras measure birefringence in glass and plastic, in real time, even on moving and rotating targets. These innovative cameras provide repeatable measurement of birefringence, letting manufacturers spot stress in bottles, flat panel substrates and optics.

>>Read More: Measuring Birefringence

Measuring birefringence with a polarimeter camera

3D Shape

3D reconstruction

PolarCam cameras and PolarView software calculate the linear Stokes polarization parameters to map the Angle of Linear Polarization of a 3D scene. The differing polarization angles of light from a surface can be used to determine the surface normals and reconstruct 3D scenes with a high degree of accuracy.

Remote Sensing

remote sensing

By capturing key polarization parameters including the linear Stokes parameters, 4D PolarCam cameras highlight information in remote sensing data for applications ranging from oceanography to astronomy.

Defect Detection

Defect Detection

Snapshot micropolarizer array technology enables PolarCam cameras to detect and measure defects in production environments. High speed imaging allows PolarCams to spot defects on moving and rotating objects, capturing problems that other cameras simply miss.

The 4D InSpec Surface Gauge is the first instrument for handheld, high resolution measurement of surface defects on precision surfaces.

Learn about the new 4D InSpec Surface Gauge for high resolution surface measurement, right on the shop floor.

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Machine Vision

Machine Vision

4D PolarCam snapshot micropolarizer cameras detect and quantify differences in polarization to spot defects in materials, identify missing or excess material, reduce glare from highly specular parts, or to aid in pick and place operations.

Autonomous Vehicle Vision

Autonomous Vehicle Vision

4D PolarCam snapshot micropolarizer cameras detect and quantify differences in polarization, enabling glare reduction to provide discrimination between false reflected images and real images that other technologies cannot provide.

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