Patent ID: 6829111
Filing Date: 2004-12-07
Classification: G02B

Abstract:
A projection lens manufacturing apparatus for manufacturing a projection lens, the projection lens including a lens-holding barrel with a predetermined optical path being set thereinside and a plurality of lenses sequentially arranged on an illuminating optical axis of the optical path, a pair of position-adjusting holes formed respectively on two axes orthogonal to each other to adjust the position of at least one of the plurality of lenses along the two axes on a plane orthogonal to the illuminating optical axis, the apparatus comprising:a light source that irradiates an adjustment light beam; a projection lens holding mechanism that holds a lens to be manufactured at a lens-holding position to adjust the position of the lens to be adjusted on the illuminating optical axis; an image light irradiation mechanism forming an image light including a predetermined test pattern in accordance with the light beam irradiated by the light source and introducing the image light into the projection lens located at the lens-adjusting position; two lens position adjusters that respectively adjust the position of the lens to be adjusted along the two axes through the lens position-adjusting holes while detecting the image light projected by the projection lens into which the image light is introduced; and a bonding mechanism that bonds the position-adjusted lens to the lens-holding barrel.