What is a reflective conoscope?
- It is an optical apparatus that is designed primarily for the
determination of optical axis position in anisotropic thin films and
thick materials that are laying on an opaque or reflective substrate.
- It operates by using the light that passes through the anisotropic
medium being investigated and that is reflected back to the apparatus by
the opaque / reflective substrate.
- Usually conoscopy is made by transmission(*).
- The reflection mode, developed by us, enhances the sensitivity of the
usual method and allows several other functionalities (see
To what is
- Its sensitivity depends on the sample thickness (more precisely the
product between thickness and sample birefringence) and on the radiation
- The apparatus can work both in white light and in monochromatic
(filtered) light (red, green and blue).
Operating principle of the reflective conoscope
(*) M. Born, E. Wolf
- Principles of Optics, 7th
edition, Cambridge University Press, (1999)