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2. Optical microscope - Wikipedia

   en.wikipedia.org/wiki/Optical_microscope

   A simple microscope uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image. [1] [2] The use of a single convex lens or groups of lenses are found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes.

3. Loupe - Wikipedia

   en.wikipedia.org/wiki/Loupe

   Loupe-mounted lights used to be fed by fiber optic cables that connected to either a wall-mounted or table-top light source. Newer models feature a more convenient LED lamp within the loupe-mounted light and an electric cord coming from either the conventional wall-mounted or table-top light source or a belt clip rechargeable battery pack.

4. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. A magnifying glass can be used to focus light, such as to concentrate the Sun's radiation to create a hot spot at the focus for fire starting.

5. Helmet-mounted display - Wikipedia

   en.wikipedia.org/wiki/Helmet-mounted_display

   Gentex/Raytheon introduced the Scorpion® Head/Helmet-Mounted Display System to the military aviation market in 2008. In 2010, Scorpion was the winner of the USAF/ANG/AFRes Helmet Mounted Integrated Targeting (HMIT) program. [35] The Gentex helmet mounted display and motion tracking division was subsequently acquired by Thales in 2012.

6. Optical head-mounted display - Wikipedia

   en.wikipedia.org/wiki/Optical_head-mounted_display

   Intel announces Vaunt, a set of smart glasses that are designed to appear like conventional glasses and are display-only, using retinal projection. [6] The project was later shut down. [7] Zeiss and Deutsche Telekom partners up to form tooz technologies GmbH to develop optical elements for smart glass displays. [8] [9]

7. List of headgear - Wikipedia

   en.wikipedia.org/wiki/List_of_headgear

   This turban was likely only worn in the context of the priesthood and is cited in Exodus 27:20–30. Mitpaḥat is a scarf that is worn on the head or hair, by some married women. Some wear scarves only during prayers, and others wear them in public.