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Streamlight is a company located in Eagleville, Pennsylvania, United States, that manufactures flashlights powered by various rechargeable and disposable batteries. [ 2 ] Their product line features hand-held and weapon-mountable lights [ 3 ] as well as a right angle light used by firefighters on their turnout gear . [ 4 ]
Mamiya's C-Series, introduced in the 1960s, the C-3, C-2, C-33, C-22 and the Mamiya C330 and Mamiya C220 along with their predecessor the Mamiyaflex, [7] are the main conventional TLR cameras to feature truly interchangeable lenses. [8] "Bayonet-mount" TLRs, notably Rolleis & Yashicas, had both wide-angle and tele supplementary front add-ons ...
The Voigtländer Brillant is a range of pseudo-TLR cameras, and later true TLR cameras, taking 6 × 6 cm exposures on 120 film, made by Voigtländer from 1932. Famed Hungarian-Dutch photographer Eva Besnyö used a Brillant for her early work.
Seagull adopted the SR lens mount from Minolta's manual focus SLRs and camera design under license, and continues to produce it long after Minolta moved on to autofocus Alpha lens mount cameras. [2] In 2009 a fixfocus-Digital camera DS-5060S with 5 MB-sensor was offered. [3]
On the other hand, the light from a semiconductor laser typically exits the tiny crystal with a large divergence: up to 50°. However even such a divergent beam can be transformed into a similarly collimated beam employing a lens system, as is always included, for instance, in a laser pointer whose light originates from a laser diode. That is ...
The Visible light is located on the opposite side to the laser module, but cannot be activated with the laser in order to prevent white light discharge, and pollution. As part of the M27 IAR rollout in 2011, a number of standard accessories were chosen to be included with every M27, including an AN/PEQ-16 to allow for improved night and day ...
Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.
Until the development of SLR, all cameras with viewfinders had two optical light paths: one through the lens to the film, and another positioned above (TLR or twin-lens reflex) or to the side (rangefinder). Because the viewfinder and the film lens cannot share the same optical path, the viewing lens is aimed to intersect with the film lens at a ...