Patent ID: 7995189

Claim:
An optical distance measuring sensor for sensing a distance to a target object by a triangulation method, comprising: a light emitting element; a light receiving element arranged on the same plane as said light emitting element; first and second transparent resin units sealing said light emitting element and said light receiving element, respectively; first and second lenses arranged forward of said light emitting element and said light receiving element, respectively; and a light-blocking resin unit holding said light emitting element and said light receiving element to form a predetermined distance between said light emitting element and said light receiving element, said light receiving element including: a light receiving unit having a plurality of cells and collecting light emitted from said light emitting element and reflected by said target object, a memory unit storing a predetermined position on said light receiving unit corresponding to a predetermined distance of the sensor to the target object, and an arithmetic operation unit sensing a collection position of said light on said light receiving unit based on a result of the sensing of said light by the plurality of cells, and measuring a distance to said target object based on a relative positional relationship between said predetermined position stored in said memory unit and said collection position of the light on light receiving unit.