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2. Curved mirror - Wikipedia

   en.wikipedia.org/wiki/Curved_mirror

   A convex mirror diagram showing the focus, focal length, centre of curvature, principal axis, etc. A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. [1] Convex mirrors reflect light outwards, therefore they are not used to focus light.

3. Zograscope - Wikipedia

   en.wikipedia.org/wiki/Zograscope

   Large table-top viewer for vue d'optique prints. Late 18th century An example of a picture designed for viewing under a zograscope equipped with a mirror, its text written right-to-left. A zograscope is an optical device for magnifying flat pictures that also has the property of enhancing the sense of the depth shown in the picture

4. A magnifying mirror is a travel must-have for anyone over the ...

   www.aol.com/lifestyle/a-magnifying-mirror-is-a...

   The Kintion Pocket Mirror provides a portable, two-sided compact (with each mirror side measuring a generous 3.3 by 2.5 inches) that is ideal for slipping into your purse or weekender. One side ...

5. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   A convex secondary mirror is placed just to the side of the light entering the telescope, and positioned afocally so as to send parallel light on to the tertiary. The concave tertiary mirror is positioned exactly twice as far to the side of the entering beam as was the convex secondary, and its own radius of curvature distant from the secondary.

6. List of instruments used in otorhinolaryngology, head and ...

   en.wikipedia.org/wiki/List_of_instruments_used...

   Head Mirror with head band: to focus light into the cavity under inspection; mirror is concave and is used with a Chiron lamp to produce a parallel beam of light; doctor views through the hole (average diameter of mirror is 3 & 1/2" & that of hole is 1/4") Head mounted lights with head band: to focus light into the cavity under inspection ...

7. Cassegrain reflector - Wikipedia

   en.wikipedia.org/wiki/Cassegrain_reflector

   Light path in a Cassegrain reflecting telescope. The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical system's primary mirror entrance aperture.