Optical Crosstalk in CMOS Image Sensors Chris Fesenmaier and Benjamin Sheahan |
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Results - Reference As the Poynting vector plots show, there is a significant amount of diffraction that causes the light to spread out, even at normal incidence. The spreading is amplified at off-axis incidence, as can be seen in Figure 8. All Poynting vector plots have been enhanced to bring out detail; although it may appear that light is leaking through the black filter, the actual power is negligible. Note that the transmission decreases and crosstalk increases significantly with increasing angle, even with a rough optimization of the microlens and color filter shift.
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