An optical device that projects an image of an object onto a plane surface, especially for tracing.
An optical instrument, containing a prism or an arrangement of mirrors, that appears to project the image of an object being viewed through it onto a surface, thereby allowing its outline to be traced: often used with a microscope.
He described the reflecting goniometer in 1809 and the camera lucida in 1812, provided microscopists with the "Wollaston doublet," and applied concavo-convex lenses to the purposes of the oculist.
The image formed on the paper may be traced out by a pencil, and it will be noticed that in this case the image is real - not virtual as in the case of the camera lucida.
Trans., 1668, 3, p. 741) a camera lucida on the principle of the magic lantern, in which the images of illuminated and inverted objects were projected on any desired scale by means of a broad convex lens through an aperture into a room where they were viewed by the spectators.
This is the simplest form of the camera lucida.
About the beginning of the 19th century Dr Wollaston invented a simple form of the camera lucida which gives bright and erect images.