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Richard L. Sutherland - Dayton OH, US William K. Hagan - Encinitas CA, US William J. Kelly - Coronado CA, US Bob Epling - Waynesville OH, US
Assignee:
Science Applications International Corporation - San Diego CA
International Classification:
G02B 5/32
US Classification:
359 15, 359 3, 349201, 349202
Abstract:
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).
Switchable Polymer-Dispersed Liquid Crystal Optical Elements
Richard L. Sutherland - Dayton OH, US William K. Hagan - Encinitas CA, US William J. Kelly - Coronado CA, US Bob Epling - Waynesville OH, US
Assignee:
Science Applications International Corporation - San Diego CA
International Classification:
G02B 5/32
US Classification:
359 15, 359 3, 349 86, 349202
Abstract:
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).
Switchable Polymer-Dispersed Liquid Crystal Optical Elements
Richard Sutherland - Dayton OH, US William Hagan - Encinitas CA, US William Kelly - Coronado CA, US Bob Epling - Waynesville OH, US
International Classification:
G02B 5/32 G02B 27/42
US Classification:
359015000, 359558000
Abstract:
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material of the present invention offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).
Switchable Polymer-Dispersed Liquid Crystal Optical Elements
Richard Sutherland - Dayton OH, US William Hagan - Encinitas CA, US William Kelly - Coronado CA, US Bob Epling - Waynesville OH, US
International Classification:
G03H 1/00
US Classification:
359034000, 359015000
Abstract:
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material of the present invention offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).
Isbn (Books And Publications)
Hagan's Infectious Diseases of Domestic Animals: With Special Reference to Etiology, Diagnosis, and Biologic Therapy
Hagan and Bruner's Infectious Diseases of Domestic Animals: With Reference to Etiology, Pathogenicity, Immunity, Epidemiology, Diagnosis, and Biologic Therapy
Dr. Hagan graduated from the University of Kentucky College of Medicine in 1984. He works in Bardstown, KY and specializes in Family Medicine. Dr. Hagan is affiliated with Hardin Memorial Hospital.