OPTICAL SYSTEM OF PROJECTION TV RECEIVER Russian patent published in 2004 - IPC

FIELD: optical instrumentation, design of optical systems of lenses of projection TV receivers. SUBSTANCE: optical system includes screen of camera tube, protective glass, meniscus forming jointly with protective screen space for cooling liquid, three correction-high speed components with aspherical surfaces arranged along optical axis and screen of home movie theater. Correction-high speed component installed in front of home movie theater comes in the form of glass lens with spherical surfaces, which carry plastic layers with outer aspherical surfaces. Plastic layers show refractive index different from refractive index of glass of lens. EFFECT: raised quality of image on screen of home movie theater, reduced cost of system due to reduction of manufacturing tolerances. 1dwg