Patent ID: 8670657
Filing Date: 2014-03-11
Classification: G01C,G02B,G03B

Abstract:
1. A ranging apparatus that measures the distance to an object to be imaged by an imaging apparatus using the principle of triangulation ranging, the ranging apparatus comprising: a measurement unit that ranges a maximum distance of not less than ½ of a maximum value of a hyper focal length of the imaging apparatus, wherein the measurement unit includes a pair of lenses and a pair of sensors on which an image of the object is formed by the pair of lenses, wherein when fs is the focal length of the pair of lenses of the measurement unit and fit is the maximum focal length of the imaging apparatus, the following conditional expression is satisfied: wherein when fsi is the focal length of each of the lenses that form the ranging apparatus and vsi is the Abbe number of each of the lenses that form the ranging apparatus, the following conditional expression is satisfied: