Micro-Scale Thermal Imaging of Organic and Polymeric Materials with Cooled and Uncooled Infrared Cameras
Figure 7
Phase-locked image with a contour line ((B), (C), (E), and (F)) in comparison with the raw image ((A), (D)) of the polyimide film base copper clads laminates for flexible printed wiring boards. The modulated frequencies are (B): 1.5 Hz, (C): 0.57 Hz, (E): 0.8 Hz, and (F): 1.6 Hz (2nd harmonic image of (E)), observed with the VOx IR FPA (25 μm detector pitch) equipped with a 2.5 magnification micro lens.
