초록 ▼

A focus detection apparatus includes: a first optical device for forming light distributions, associated with an object image, whose relative positional relationship chnages along a first direction in accordance with a focusing state of the objective lens; a second optical device for forming light d

A focus detection apparatus includes: a first optical device for forming light distributions, associated with an object image, whose relative positional relationship chnages along a first direction in accordance with a focusing state of the objective lens; a second optical device for forming light distributions, associated with the object image, whose relative positional relationship changes along a second direction in accordance with the focusing state of the objective lens; a first sensing unit, having a plurality of photosensors, for forming an electrical signal associated with the focusing state of the objective lens in order to sense the light distributions formed by the first optical device; and a second sensing unit, having a plurality of photosensors, for forming an electrical signal associated with the focusing state of the objective lens in order to sense the light distribution formed by the second optical device.

대표청구항 ▼

A focus detection apparatus for an objective lens, comprising: first optical means for forming energy distributions which vary along a first direction in accordance with a focusing state of said objective lens; second optical means for forming energy distributions which vary along a second direction

A focus detection apparatus for an objective lens, comprising: first optical means for forming energy distributions which vary along a first direction in accordance with a focusing state of said objective lens; second optical means for forming energy distributions which vary along a second direction transverse to the first direction in accordance with the focusing state of said objective lens; first sensing means, having a plurality of photosensors, for forming a signal associated with the focusing state of said objective lens in order to sense the energy distributions formed by said first optical means; second sensing means, having a plurality of photosensors, for forming a signal associated with the focusing state of said objective lens in order to sense the energy distributions formed by said second optical means; and a stop having a first aperture for regulating a detection field for said first sensing means and a second aperture for regulating a detection field for said second sensing means, said stop being arranged between said first and second optical means and said objective lens; said first and second optical means being provided between a predetermined image plane of the objective lens and said first and second sensing means, each of said first and second optical means having a pair of light regulating members and a pair of image forming lenses.