CPC Subgroup Additional Only
H01J 2229/89 Optical components associated with the vessel
Full Title
Details of cathode ray tubes or electron beam tubes (H01J2329/00 takes precedence) > Optical components associated with the vessel
11 direct subcodes
Child Classifications
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- H01J 2229/8901 Fixing of optical components to the vessel
- H01J 2229/8903 Fibre optic components
- H01J 2229/8905 Direction sensitive devices for controlled viewing angle
- H01J 2229/8907 Image projection devices
- H01J 2229/8909 Baffles, shutters, apertures or the like against external light
- H01J 2229/8913 Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
- H01J 2229/8924 having particular properties for protecting the vessel, e.g. against abrasion, water or shock
- H01J 2229/8926 Active components, e.g. LCD's, indicators, illuminators and moving devices
- H01J 2229/8928 Laser CRTs
- H01J 2229/893 using lenses
- H01J 2229/899 Photographic devices (permanent recording of images)