PURPOSE:To freely vary the focus of a concave lens or convex lens by applying a pressure including a negative pressure inward form the outer periphery of a freely expandable and contractable compound lens. CONSTITUTION:The surface of the freely expandable and contractable compound lens 1 which is...
Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；...
It is also along the irradiation direction of the reflector (1,1 ') arranged in front of a converging lens (5). 在反射器(1,1′)和聚光透镜(5)之间有一散射透镜(6). Between the reflector (1,1 ') and the condenser lens (5) having a scattering lens (6).特图·伟格特...
4.a point upon which attention, activity, etc, is directed or concentrated 5.(Mathematics)geometrya fixed reference point on the concave side of a conic section, used when defining its eccentricity 6.(Geological Science) the point beneath the earth's surface at which an earthquake or undergroun...
Optical Glass OEM Convex/ Concave Lens for Imaging or Focus, Find Details and Price about OEM Lens Convex Lenses from Optical Glass OEM Convex/ Concave Lens for Imaging or Focus - Changchun Yutai Optics Co., Ltd.
1.an optical instrument for making distant objects appear larger and nearer when viewed directly through lenses (refracting telescope) or indirectly as through images focused by a concave mirror (reflecting telescope). adj. 2.consisting of parts that slide one within another. ...
the focal length is tuned to a desired value within very few milliseconds. The lens architecture is “push pull” which means that the lens curvature is deflected from concave to convex. With actuators based on proven voice-coil technology, the EL-3-10 focus tunable lens is extremely reliable...
✨TAKE A LOOK!:D5*2.5mm H-LAK4L Focus Bi Concave Lens led Optical Glass co2 laser in Camera Telescope Objective Lenses PRODUCT PROPERTY:✨ 1: Mowen offer amazing our product.The shape of our product is spherical.Our product is made in cn(origin).The certification of our product is ...
4.Geometrya fixed reference point on the concave side of a conic section, used when defining its eccentricity 5.the point beneath the earth's surface at which an earthquake or underground nuclear explosion originates 6.Patholthe main site of an infection or a localized region of diseased tissue...
The third lens component has a convex surface on its image side, and the fourth lens component has a meniscus shape, is made of plastic, includes at least one aspheric surface, and is concave on its image side. The second lens component is formed of a single lens element, and various ...