DEMONSTRATION DEVICE FOR NON-PORTABLE LIGHTS Russian patent published in 2007 - IPC G09F19/18 

FIELD: presentation of informational and advertising materials.

SUBSTANCE: demonstration device contains optical input system optically conjugated with light source of the light and optical output system. Input and output optical systems are made in form of confocally positioned, respectively, input and output two-mirror objectives, common focal plane of which is located between their first concave parabolic mirrors, made with an appropriate axial through aperture and directed by their reflecting surfaces to opposite sides. Holder is made in form of frame, provided with means for holding slide on it and mounted between first mirrors of input and output two-mirror objectives with its possible movement in direction, perpendicular to common optical axis of two-mirror objectives, and also with its possible holding in given position relatively to common optical axis and common focal plane of two-mirror objectives. In each one of two-mirror objectives, confocally to first mirror, appropriate second mirror is mounted, of lesser size and having either convex hyperbolic shape or concave ellipsoid shape.

EFFECT: expanded functional capabilities of demonstration device.

7 cl, 5 dwg