Abstract
An optical system to measure depth information is proposed here. The proposed optical system has double coaxial multi-wavelength apertures, which makes it possible to simultaneously take an orthogonal projection image and a perspective projection image with these two images separated by wavelengths. The three-dimensional physical position of an object can be derived with the ratio of the radial distances of these separated images with the centers located on the optical axis. Validation of the system by a ray-tracing simulation and an experiment shows that the proposed optical system can be used for depth reconstruction.
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