Modern wide angle upside down goggles (147° x 68° field of view)
Upside down goggles, also known as "invertoscopes" by Russian researchers,[1] are optical instruments that invert the image received by the retinas upside down. They are used to study human visual perception, particularly psychological process of building a visual image in the brain. Objects viewed through such a device appear upside down and mirrored. They are constructed using sets of optical right-angle prisms, concave mirrors, or a mirror plus right-angle prisms with unequal cathethus.
^Logvinenko, A.D. (1974). Perception under the conditions of inversion of the visual field. Dissertation. Russia: MSU. pp. 5–67.
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Upsidedowngoggles, also known as "invertoscopes" by Russian researchers, are optical instruments that invert the image received by the retinas upside...
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Solar viewer Shutter Wayfarer Goggles Ballistic Dark adaptor Doggles Fatal Vision Foggles Night-vision Snow Swedish Upsidedown Welding Other Blindfold Blinder...
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Solar viewer Shutter Wayfarer Goggles Ballistic Dark adaptor Doggles Fatal Vision Foggles Night-vision Snow Swedish Upsidedown Welding Other Blindfold Blinder...
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Solar viewer Shutter Wayfarer Goggles Ballistic Dark adaptor Doggles Fatal Vision Foggles Night-vision Snow Swedish Upsidedown Welding Other Blindfold Blinder...
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