Illumination systems consisting primarily of LEDs and laser diodes together with an optical fiber for monitoring nasopharyngeal tubes via transillumination through tissue for guiding the tubes along the gastrointestinal tract; Optical LED medical device for transillumination of tracheal pathways to guide insertion of transnasal feeding tubes; Fiber optic instruments for medical use, namely, a fiber optic light source used in transnasal endoscopy; Medical transillumination devices for use in guided introduction of transnasal feeding tubes; Medical device, namely, chemiluminescent light for use in endoscopic exams; Optical apparatus in the nature of light source providing variable frequency radiation delivery capabilities for medical, veterinary, and dental use; variable frequency light source for use in inspecting and monitoring medical devices; Optical instruments and components, namely, illumination systems consisting primarily of LEDs and laser diodes together with an optical fiber for use in medical devices; LED Lighting apparatus for use with endoscopes.

Optical apparatus featuring light sources providing variable frequency radiation delivery capabilities for use in manufacturing; Lighting modules with variable frequency light delivery capabilities; LED medical device for light-based sterilization for medical purposes; LED medical device for light-based disinfection for medical purposes; variable frequency light source for use in disinfecting medical devices.