Changchun Fortune Optronics Inc. could manufacture various Optical Lenses: (1) Spherical Lenses (2) Cylindrical Lenses (3) Aspherical Lens or Condenser Lenses(4)conversion lens, etc. Changchun Fortune Optronics Inc. could manufacture various Optic... - Update: 2009-07-03

A piece of glass with plane parallel surfaces used to admit light into an optical system and to exclude dirt and moisture.Windows are used to isolate different physical environments while allowing light to pass. - Update: 2009-07-03

A piece of glass with plane parallel surfaces used to admit light into an optical system and to exclude dirt and moisture.Windows are used to isolate different physical environments while allowing light to pass. - Update: 2009-07-03

A lens having at least one surface that is formed like a portion of a cylinder.Cylindrical lenses are used to correct astigmatism in the eye,and,in rangefinders,to produce astigmatism,stretching a point of light into a line. - Update: 2009-07-03

An optical device for dividing a beam into two or more separate beams.A simple beamsplitter may be a very thin sheet of glass inserted in the beam at an angle to divert a portion of the beam in a different direction.A more sophisticated type consists... - Update: 2009-07-03

A lens element in which at least one face is shaped to a surface of revolution about the lens axis,including conic sections but excluding a sphere. - Update: 2009-07-03

A glass substrate carrying a layer of deposited aluminum that has been pressure-ruled with a large number of fine equidistant grooves, using a diamond edge as a tool. Light falling on such a grating is dispersed into a series of spectra on both sides... - Update: 2009-07-03