epidiascope

• Dispositivo óptico que projeta imagens de objetos transparentes e também de objetos opacos sobre uma tela.

A noun referring to an optical device that projects images of both transparent and opaque objects onto a screen.

1. Optical projectorC2formaltechnical

   An optical device that projects images of both transparent and opaque objects onto a screen, used for educational or presentation purposes.

   Projetor óptico

   • The professor used an epidiascope to display a page from a rare book.
   • In the old classroom, an epidiascope was used to show diagrams to the students.
   • The museum's epidiascope projected the ancient manuscript clearly.