초록 ▼

In a focus detecting device has a plurality of optical systems each forming a pair of light distributions whose relative position varies in conformity with the focus adjusted state of an objective lens. The optical systems are disposed so that the direction in which the relative position of the ligh

In a focus detecting device has a plurality of optical systems each forming a pair of light distributions whose relative position varies in conformity with the focus adjusted state of an objective lens. The optical systems are disposed so that the direction in which the relative position of the light distributions is varied differs. Focus detecting sensors are provided for receiving the relative position of the light distributions, an the optical systems are constructed so that the optical spacing between the centers of gravity of the areas in which light beams passed through one of the optical systems differs from the optical spacing between the centers of gravity of the areas on another of the optical systems.

대표청구항 ▼

A focus detecting device comprising: a plurality of secondary imaging optical systems each forming a pair of light distributions whose relative positions vary in conformity with the focus adjusted state of an objective lens with respect to an object image, the secondary imaging optical systems being

A focus detecting device comprising: a plurality of secondary imaging optical systems each forming a pair of light distributions whose relative positions vary in conformity with the focus adjusted state of an objective lens with respect to an object image, the secondary imaging optical systems being disposed so that a direction in which the relative positions of one of said pair of light distributions varies is different from a direction in which the relative positions of another of said pair of light distributions varies; an objective lens having a pupil through which pass the pairs of light distributions; and a plurality of focus detecting sensors for receiving the pairs of light distributions, wherein said plurality of optical systems are disposed so that a first optical spacing between areas of said pupil through which the light distributions of said one pair pass differs from a second optical spacing between areas of said pupil through which the light distributions of said another pair pass, each optical system comprising a pair of lenses.