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  2. Headlamp - Wikipedia

    en.wikipedia.org/wiki/Headlamp

    Headlamp. A motor scooter 's front with an impractical number and variety of headlamps, added for decorative purposes and characteristic of Mod culture. A headlamp is a lamp attached to the front of a vehicle to illuminate the road ahead. Headlamps are also often called headlights, but in the most precise usage, headlamp is the term for the ...

  3. Halo headlights - Wikipedia

    en.wikipedia.org/wiki/Halo_headlights

    With an increasing use of less cumbersome projector lenses in the 2000s, automakers could implement innovative headlamp designs, including halo rings. BMW 5 Series. Halo headlights were originally designed and first used by BMW on the 2001 BMW 5 Series (E39), a luxury sports sedan which soon entered Car and Driver's "10Best list".

  4. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal ...

  5. Fresnel lens - Wikipedia

    en.wikipedia.org/wiki/Fresnel_lens

    A Fresnel lens (/ ˈfreɪnɛl, - nəl / FRAY-nel, -⁠nəl; / ˈfrɛnɛl, - əl / FREN-el, -⁠əl; or / freɪˈnɛl / fray-NEL[1]) is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.

  6. Movie projector - Wikipedia

    en.wikipedia.org/wiki/Movie_projector

    A movie projector (or film projector) is an opto - mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras. Modern movie projectors are specially built video projectors (see also digital cinema).

  7. Slide projector - Wikipedia

    en.wikipedia.org/wiki/Slide_projector

    A slide projector is an optical device for projecting enlarged images of photographic slides onto a screen. Many projectors have mechanical arrangements to show a series of slides loaded into a special tray sequentially. 35 mm slide projectors, direct descendants of the larger-format magic lantern, first came into widespread use during the ...