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By combining two plano-convex lenses with focal lengths of 100 mm for an effective focal length of 50 mm the focused spot size is decreased to 81 µm and the spherical aberration is reduced to 0.8 mm (Figure 2b). An even better option however is to combine the f=100 mm plano-convex lens with a positive f=100 mm meniscus lens.
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Meanwhile a distance d between the light emitting device 20 and the lower surface 31 of the lens 30 is 0.18 mm and the light emitting device 20 and the lens 30 are disposed such that the optical axis L and the central axis C are aligned. Meanwhile a height H of the lens 30 is 4.7 mm and a width W1 of the upper surface 35 is 15 mm.
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Many interchangeable lenses for DSLR cameras are listed as "macro"; however true macro lenses offer 1:1 magnification or greater. For example the Tamron 70-300 mm f/4.0-5.6 interchangeable lens for Canon or Nikon is listed as a "macro zoom"; however its maximum magnification is 1:2 (the object size captured on the digital sensor is one half the actual life size).
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As such both are looking at the same view of the scene through the same sized hole. That hole has different f-numbers on each lens so the light per sq mm will differ but the same element in the scene will be made up from the same amount of light (projected over a larger region of the larger sensor).
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The small viewfinder on top of the camera was of little use when the photographer wanted to use a 135 mm or 500 mm lens. The problem was recognized by Asahi. In 1957 Asahi introduced the Pentax series a 35 mm single-lens reflex camera (SLR) camera which was so well received that it influenced the design of 35 mm SLRs worldwide for years to come.
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B5W-LB series Light Convergent Reflective Sensor B 5 W-L B Ratings and Specifications Digital output models I/O Circuit Diagrams NPN output Sensing method Light Convergent Reflective Item Model NPN output B5W-LB1112-1 B5W-LB1122-1 B5W-LB2112-1 B5W-LB2122-1 Sensing dis-tance White paper 2 to 10 mm 10 to 55 mm Black paper 3 to 8 mm 10 to 40 mm ...
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Poly(methyl methacrylate) (PMMA) also known as acrylic acrylic glass or plexiglass as well as by the trade names Crylux Plexiglas Acrylite Lucite Perclax and Perspex among several others (see below) is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.The same material can be used as a casting resin in inks and coatings ...
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Compact LED projector design with high uniformity and efficiency. ... 30 mm × 30 mm × 22. 2 mm ... In this architecture we have replaced the collection lenses light pipes (or lens arrays) and ...
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When the mirror substrate thickness is greater than 0 as shown in this example the converter will copy the sequential substrate thickness to the thickness of the Compound Lens object. If the mirror substrate shape is flat as defined in this example then the back of the mirror will be represented with a flat Standard Surface object. If the ...
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5. If the red LED light in the viewfinder lights up against either the + or the - sign the exposure is incorrect and you should select another f-stop until the green LED light lights up. If the red LED light remains lit such as in very dark conditions use a flash unit. (Fig. 20)
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Soon after the commercial introduction as polymacon in 1970 Wichterle's poly-hydroxyethylmethacrylate (PHEMA) hydrogel was rapidly followed by a wide range of new hydrogel polymers driven by the obvious pursuit for a competitive position in this new emerging soft contact lens market. The pursuit of new materials was also motivated by the understanding the cornea uses …
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Light power propagating in a fiber decays exponentially with length due to absorption and scattering losses. Attenuation is the single most important factor determining the cost of fiber optic telecommunication systems as it determines spacing of repeaters needed to …
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At 90 degree the scattering light along the beamline was first imaged by a pair of objective lens O2 and O3 (both were 4X/0.1NA) and then collimated by a spherical lens Sc (f = 400 mm).
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A LED light pipe is an optical fiber or a solid transparent plastic rod for transmitting light from an LED mounted on a printed circuit board (PCB) to the user interface. Light pipes transmit up ...
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LED ceiling lights can be recessed or suface mounted luminaires directing light straight downonto the required surface. The luminaire is surrounded by a single reflector. This category of products has a wide range of uses and is perfectly applicable to both domestic and professional environments.
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At the front side the left side holds a big lens covered with black cover while the right surface has the company's logo and blue colour circle LED light indicator that activates when we switch on powers supply for it. And the centre of that has remote infrared receiver sensor.
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Puck and dot lights are designed for smaller areas to highlight decorative objects or where strip lighting is impractical including inside and under cabinets counters and more.
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This allows a lens of say 20mm focal length to have a rear element more than 20mm in front of the sensor (absolutely needed in an SLR so the mirror has room to flip up without hitting the back of the lens). The design also provides a relatively high aperture with a wide field of view has minimal vignetting and rarely has spherical aberration.
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Thorlabs offers high-quality Additive and Subtractive Dichroic Filters with a strong emphasis on durability. Unlike plastic filters or gels these coatings will not fade with time and can handle much higher temperatures. Our dichroic color filters can be mounted in our Ø1 lens tubes or filte
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The Sigma 500mm f/4 DG OS HSM Sports Lens is available in Canon (reviewed) Nikon F and Sigma mounts and the Canon and Sigma versions can be used on a Sony E-mount camera body via the Sigma Mount Converter MC-11. This lens qualifies for Sigma's Mount Conversion Service in …
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SLP's extruded Prismatic Pattern 19 lens offers the light control of an injection molded lens at a fraction of the cost. The 3/16" (4 7mm) square based male prisms suppresses luminance at critical angles and delivers 92% of the light output to the 0-60 degree zone.
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Most of the disadvantages of aphakic spectacle lenses are eliminated with the use of correcting aphakic contact lenses. Contact lens image magnification is in the range of 7% to 12%. 4 5 IOLs result in an image magnification of 3% to 4%. 4 Thus as the lens correcting aphakia is brought closer to the original site of the crystalline lens the image magnification decreases.
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This adapter allows you to mount Contax N lenses to Sony E-mount camera bodies. It has a built-in iris which allows for some degree of control over the light coming in from the lens. Automatic diaphragm auto-focusing or other electronic functions will not operate correctly while using this adapter.
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XVR ZR2: Diffusion lens XVC Z13 : Installation base 1 Add wire protecting tube Ømin: 6 mm / 0.24 in and grommet. X NO OK 1 OK X NO 1 A PART NAMES 1 Globe 4 Bolt (M4) with flange-nut Cable : Power : VFF0.75 mm2 x 2 Length : 400 mm 7 2 LED 5 Main mirror 3 Body 6 Proof O-ring • Mount securely to a solid surface with minimal vibration. B ...
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・ILU-008 is the lens for CL-L251 L233 and L330 series. ・Discussion will be needed separately if you combine it with LEDs other than these. ・ Do not use this product under …
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First all the LED's come on seperately and the reason for the blue color is that it is easiest color for the human eye to see. 4. What is the Cycle and process time of the CZ-K? ... Lens = Acrylic resin (PMMA) Sheath = Vinyl chloride resin (PVC) ( emitter ) and Polyethylene (PE) ( transmitter ) ... The AP sensor can handle -760 Torr (-760 mm ...
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