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2. Reflector (photography) - Wikipedia

   en.wikipedia.org/wiki/Reflector_(photography)

   A portable folding reflector positioned to "bounce" sunlight onto a model. Reflectors vary enormously in size, colour, reflectivity and portability. In tabletop still life photography, small mirrors and card stock are used extensively, both to reduce lighting contrast and create highlights on reflective subjects such as glassware and jewelry.

3. Polaroid SX-70 - Wikipedia

   en.wikipedia.org/wiki/Polaroid_SX-70

   The SX-70 included many sophisticated design elements. A collapsible SLR required a complex light path for the viewfinder, with three mirrors (including one Fresnel reflector) of unusual, aspheric shapes set at odd angles to create an erect image on the film and an erect aerial image for the viewfinder. [10]

4. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/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 image. 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 ...

5. Bron Elektronik - Wikipedia

   en.wikipedia.org/wiki/Bron_Elektronik

   Broncolor Scoro 3200S wifi- photography lighting powerpack Broncolor Para 222 Reflector. broncolor's Para line of parabolic light reflectors have become a leading item for the company. Compatible with flash, and HMI lamps, the Paras range from 88CM to 330CM. [5]

6. Dobsonian telescope - Wikipedia

   en.wikipedia.org/wiki/Dobsonian_telescope

   Many designs have combined the advantages of a light truss tube and a collapsible design. Collapsible "truss tube" Dobsonians appeared in the amateur telescope making community as early as 1982 [13] [14] and allow the optical tube assembly, the largest component, to be broken down. As the name implies, the "tube" of this design is actually ...

7. Folded optics - Wikipedia

   en.wikipedia.org/wiki/Folded_optics

   Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. This allows the resulting focal length of the objective to be greater than the physical length of the optical device.