A wide-angle lens for projection, having the brightness of an aperture ratio of about 1:4.0 and a projection angle of not less than 120. The wide-angle lens has a first lens group (G1) and a second lens group (G2), arranged in that order from the projection surface side. The ...
15 18 22mm RGB X-Cube Prism Combiner Splitter Cross Dichroic Polyhedron Pyramid Physics Teaching Decoration Photograph LensCNY 17.19-38.82/piece Biological Microscope WF10X Wide Angle Eyepiece Diopter Adjustable High Eye Point 23.2mm Olympus Nikon Replacement EyepieceCNY 111.09-213.76/piece Biological Micros...
High-Intensity Lighting:Equipped with 6+3 LED chips, the lens delivers a powerful 6000K 85W output for superior visibility. Advanced Projector Technology:Featuring a 2.5-inch hyperboloid projector lens, this kit offers a wide-angle beam for better road illumination. Durable Construction:Built to las...
PURPOSE:To increase the aperture ratio and field angle of the title lens so as to improve the image forming performance of the lens by constituting the lens of five lens groups and providing at least one or more nonspherical surfaces in the 1st lens group, and then, causing the lens groups...
When the TEM is switched to diffraction mode, electrons that have been scattered through the same angle by the sample are focused to a point in the back focal plane of the TEM, and the projector lens serves to project an image of the back focal plane onto the image plane of the TEM ...
摘要: An object of the invention is to provide a projection lens capable of sufficiently correcting lateral chromatic aberration at both of the wide-angle end and the telephoto end, with an increased zoom ratio, a less number of lens elements, and less variation in telecentricity.收藏...
Go as wide as 26.8mm The Sony G™ Lens goes out to 26.8mm wide angle — an angle of view wide enough to cover events when it can be difficult to step back in order to frame up all of the action. Standard- Advanced XAVC S format with high bitrate of 50Mbps ...
Cutoff Line: The lens cutoff line is nice and sharp, perfect beam pattern without blind zone and dark spots. Low Beam: With obviously tangent, wide angle design, accurate focus point. Nice and sharp cut-off line, perfect beam pattern without blind zone and dark spots. High Beam: Accurate ...
High-resolution wide-angle projection lens and projector The invention discloses a high-resolution wide-angle projection lens and a projector. The focal distance projection ratio of the projection lens is smaller... 刘美鸿 被引量: 0发表: 2011年 High efficiency pocket-size projector with a compact...
Perfect Beam Angle: --Low Beam: With obviously tangent, wide angle design,accurate focus point. --High Beam: Accurate focus length, long spotlight, no astigmatism. Feature: 1.High Brightness and High Visibility. 30000 Lumens, Increase 500% Brightness than halogen light bulb, 300% Brightness tha...