Publication

Reflective optical objective

Jürgen Brugger, Victor Javier Cadarso Busto, Davor Kosanic, Bastien Rachet
2015
Patents

Abstract

The present invention relates to a reflective optical objective (1) comprising: —a first reflecting element (3) including a front surface (3a) and a hack surface (3b), the front surface (3a) including a convex reflecting surface (11); and —a second reflecting element (5) including a concave reflecting surface (13) facing the convex reflecting surface (11) of the first reflecting element (3), the second reflecting element (5) including a transmissive section (7) permitting electromagnetic radiation to pass through the concave reflecting surface (13) of the second reflecting element (5) to the first reflecting element (3). The reflective optical objective (1) is characterised in that the reflective optical objective (1) includes a carrier material (9) embedding at least the front surface (3a) of the first reflecting element (3) and defining the distance (d) between the first (3) and second (5) reflecting elements.

Official source

https://infoscience.epfl.ch/entities/publication/fee59346-10b0-4ce4-8c4d-3a7f8c12d12b

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Jürgen Brugger, Victor Javier Cadarso Busto, Davor Kosanic, Bastien Rachet
2015
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fee59346-10b0-4ce4-8c4d-3a7f8c12d12b

About this result

Related concepts (10)

Reflecting telescope

A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an . The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives.

Curved mirror

A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (recessed inward). Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration.

Plane mirror

A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface). Therefore, the angle of reflection is the angle between the reflected ray and the normal and a collimated beam of light does not spread out after reflection from a plane mirror, except for diffraction effects.

Related publications (1)

Contactless deflection sensing of concave and convex shapes assisted by soft mirrors

Dario Floreano, Ionut Halasz, Michal Karol Dobrzynski, Ramon Pericet Camara

Typical deflection sensors like strain gauges or devices based on optical fibers require physical contact with the deflected substrate during the measurement process. Such contact, however, impacts on the softness of the substrate and may falsify the measu ...

2012