PROJECTOR DEVICE

• Main Authors: NAGAO, Nobuaki, INADA, Yasuhisa, NITTA, Mitsuru
• Format: Patent
• Language: English; French; German
• Published: 11.11.2020
• Subjects: ACCESSORIES THEREFOR; ADHESIVES; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; BASIC ELECTRIC ELEMENTS; BLASTING; CHEMISTRY; CINEMATOGRAPHY; DEVICES USING STIMULATED EMISSION; DIAGNOSIS; DYES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; HOLOGRAPHY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO USESOR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS; LIGHTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; POLISHES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SURGERY; WEAPONS

A projector system includes a light source unit, a spatial light modulation device that controls light from the light source unit for each pixel to form an optical image, and a projection optical system that projects the optical image formed by the spatial light modulation device onto a target screen. The light source unit includes a solid-state light source and a wavelength conversion device. The solid-state light source emits first light, the first light including blue light with a peak wavelength in the range of 430 to 470 nm and green light with a peak wavelength in the range of 480 to 550 nm. The wavelength conversion device contains at least a red phosphor with a Ce luminescent center. The red phosphor emits second light upon receiving the green light. The second light has a spectrum with a peak wavelength in the range of 600 to 700 nm.