POSITION ADJUSTING METHOD AND POSITION ADJUSTING SYSTEM OF COLOR COMBINING OPTICAL SYSTEM, POSITION ADJUSTING METHOD AND POSITION ADJUSTING SYSTEM OF OPTICAL MODULATOR, COLOR COMBINING OPTICAL SYSTEM AND PROJECTOR

摘要

PURPOSE: A position adjusting method and a position adjusting system of a color combining system, a position adjusting method and a position adjusting system of an optical modulator, a color combining optical system and a projector are provided to determine the position of a color combining optical system of a projector in a high precision and to cope with the degradation of the margin in lighting due to the size reduction of the projector. CONSTITUTION: For adjusting the position of a color combining optical system(150) relative to a color separating optical system(120) accommodated in an optical component casing for producing a projector(100), a white laser beam is irradiated on an optical axis of a light beam passing through the optical component casing and is separated by the color separating optical system. The separated respective color lights incident on a light-incident end surface of the color combining optical system are combined. The combined light beam detected by a sensor is adjusted while detecting the combined light beam.