An organic compound that emits red light having a long wavelength and that is represented by formula [1] below. In the formula [1], R.sub.1 to R.sub.24 are each independently selected from a hydrogen atom or a substituent. ##STR00001##

An organic compound that emits red light having a long wavelength and that is represented by formula [1] below. In the formula [1], R.sub.1 to R.sub.24 are each independently selected from a hydrogen atom or a substituent. ##STR00001##

A gaze detection apparatus according to the present invention, includes at least one memory and at least one processor which function as: a detection unit configured to detect a gaze of an eye that views a display surface, based on an eye image obtained by capturing the eye; and a determination unit configured to determine whether the detection of the gaze is in error, based on a current eye image and a past eye image.

A gaze detection apparatus according to the present invention, includes at least one memory and at least one processor which function as: a detection unit configured to detect a gaze of an eye that views a display surface, based on an eye image obtained by capturing the eye; and a determination unit configured to determine whether the detection of the gaze is in error, based on a current eye image and a past eye image.

An image stabilization apparatus comprises: a first obtaining unit that obtains orientation information of an image capturing apparatus; a determining unit that, on the basis of the orientation information, determines a reference position of an image sensor included in the image capturing apparatus; and a calculating unit that calculates a correction amount for performing image stabilization by moving a position of the image sensor from the reference position in a plane intersecting with an optical axis. The reference position is different between when the orientation information indicates that the image capturing apparatus is in a first orientation and when the orientation information indicates that the image capturing apparatus is in a second orientation.

An image stabilization apparatus comprises: a first obtaining unit that obtains orientation information of an image capturing apparatus; a determining unit that, on the basis of the orientation information, determines a reference position of an image sensor included in the image capturing apparatus; and a calculating unit that calculates a correction amount for performing image stabilization by moving a position of the image sensor from the reference position in a plane intersecting with an optical axis. The reference position is different between when the orientation information indicates that the image capturing apparatus is in a first orientation and when the orientation information indicates that the image capturing apparatus is in a second orientation.

A photometer includes a luminous flux splitter that splits a luminous flux incident from a single light receiving optical system and guides the luminous flux to a finder optical system and a photometric part. A light receiver is arranged at a position to receive at least a part of light split into the finder optical system by the luminous flux splitter and generates an output for light emission profile analysis according to a light reception result.

An organic light emitting device including a pair of electrodes and an organic compound layer disposed between the pair of electrodes, wherein the organic compound layer contains, in a weight ratio of 50 wt % or more, an organic compound having a glass transition temperature of 130° C. or more, and the organic compound does not have a moiety represented by formula [1] below,

##STR00001##

where, in formula [1], *'s represent bonding positions.

An organic light emitting device including a pair of electrodes and an organic compound layer disposed between the pair of electrodes, wherein the organic compound layer contains, in a weight ratio of 50 wt % or more, an organic compound having a glass transition temperature of 130° C. or more, and the organic compound does not have a moiety represented by formula [1] below,

##STR00001##

where, in formula [1], *'s represent bonding positions.

A light projection apparatus is provided comprising: a source of light; a switchable grating on a first substrate; and a diffractive optical element. Light is diffracted at least once by the switchable grating and is diffracted at least once by the DOE.