Fig. 5 | Nature Communications

Fig. 5

From: Far-field acoustic subwavelength imaging and edge detection based on spatial filtering and wave vector conversion

Fig. 5

Experimental setup. a Experimental setup for subwavelength imaging and edge detection of 1-D slits. The speaker is 20 cm away from the lenses. The objects are 1-D slits put at the entrance of the transmitter. A microphone is used to scan the signal distribution at the exit of the receiver. b 3D printed lens1, lens2 and lens3. The white scale bar on the right bottom represents the length of 100 mm. c A photo of the experimental system

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