1 September 1991 Holographic pseudocoloring of schlieren images
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Abstract
Using the rainbow effect produced by employing a white light source in the reconstruction step of an image hologram, it is possible to obtain colored two-dimensional images. In this work a holographic technique to obtain pseudocolored schlieren images is proposed. The method is based on recording three image holograms consecutively on the same photographic plate using a He-Ne laser and three different reference beams, each one with a different angle with respect to the axis of the optical system. Each image hologram is recorded with a different position of the knife-edge into a conventional schlieren system. The multiplexed image hologram thus obtained gives different color information which is associated with the phase variations of the object under test, when it is illuminated by a conventional white light source, in the reconstruction step. Comparing this work with the conventional color schlieren system, color filters are not necessary and the images obtained can have good contrast and bright colors. Experimental results are shown.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ramon Rodriguez-Vera, Ramon Rodriguez-Vera, Arturo Olivares-Perez, Arturo Olivares-Perez, Arquimedes A. Morales-Romero, Arquimedes A. Morales-Romero, } "Holographic pseudocoloring of schlieren images", Proc. SPIE 1507, Holographic Optics III: Principles and Applications, (1 September 1991); doi: 10.1117/12.47062; https://doi.org/10.1117/12.47062
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