Canon Kabushiki Kaisha

Yoshiaki Irie

Akira Yamada

Akihiko Nagano

Keiji Nagata

Akira Akashi

Keisuke Aoyama

Shinichi Hagiwara

An optical filter comprises at least one optical member that transmits light, wherein a first optical film that reflects at least one of light in a longer wavelength band than a first wavelength and light in a shorter wavelength band than a second wavelength is formed on a first surface, and a second optical film that reflects at least one of light in a longer wavelength band than a third wavelength and light in a shorter wavelength band than a fourth wavelength is formed on a second surface, the second surface being different from the first surface, and the first wavelength and the third wavelength are different from each other by a first predetermined amount, and the second wavelength and the fourth wavelength are different from each other by a second predetermined amount.

Optical filter and image capturing apparatus

An image sensing unit, comprising: an image sensor including a plurality of pixels, corresponding to a plurality of microlenses, respectively, each of which has a plurality of photoelectric conversion units aligned in a predetermined direction and from which a pupil divided signal can be read out; and an optical low-pass filter arranged on a subject side of the image sensor, wherein the optical low-pass filter is configured by a single birefringence plate, and separates a light beam in an alignment direction in which the plurality of photoelectric conversion units are aligned.

Image sensing unit and image capturing apparatus

Provided is a finder apparatus for a camera, including: an optical finder to be provided with an optical image of an object; a display unit configured to display image information as an image; an optical path combining unit having a predetermined optical characteristic, and configured to optically combine the optical image provided to the optical finder and the image displayed on the display unit with each other in an optical path of the optical finder; and an image display processing unit configured to subject the image information to image display processing, in which, when the optical finder is not provided with the optical image of the object, the image display processing unit subjects the image information to first image display processing corresponding to the predetermined optical characteristic of the optical path combining unit.

Finder apparatus for a camera, finder display controlling method, and storage medium

An optical viewfinder to observe an object image focused as a primary image by an objective lens includes a first display unit of self-luminous type and a second display unit of non-self-luminous type. The first display unit is arranged at a position closer to a primary image plane of the objective lens than the second display unit in a direction of an optical axis.

Optical viewfinder having self-luminous and non-self-luminous display portions and optical apparatus using same

The image pickup apparatus includes a finder optical system, a measuring part performing measurement relating to an object field image, a liquid crystal display element displaying in-finder information to be observed as an image superimposed on the object field image, and a temperature detector detecting temperature. A controller starts non-display control for causing the display element to change from a display state to a non-display state at a non-display control timing before start of the measurement, and starts display control for causing the display element to change from the non-display state to the display state at a display control timing before end of the measurement. The controller makes at least one of the non-display timing and the display timing earlier when a detected temperature acquired from the temperature detector is lower than a predetermined temperature as compared with when the detected temperature is higher than the predetermined temperature.

Image pickup apparatus and control method therefor

An imaging apparatus includes an image sensor, a first optical member disposed ahead of a front of the image sensor, a second optical member disposed between the first optical member and the image sensor, and a holder. The holder elastically retains the first optical member and retains the second optical member so that the second optical member is opposed to the elastically retained first optical member. The imaging apparatus further includes a film-like resin filter disposed between the first optical member and the second optical member that is bonded to at least one of the first optical member and the second optical member.

Imaging apparatus and optical filter

Foreign substance information about at last including a position of a foreign substance adhered to an optical element disposed in front of an image sensor is detected, and whether the position of the foreign substance overlaps a predetermined area of an object is determined by analyzing an image signal of the object generated by the image sensor. When it is determined that the position of the foreign substance overlaps the predetermined area of the object, a relative position of the image of the object formed on the image sensor and the image sensor is changed.

Imaging apparatus, control method thereof, and computer-readable storage medium storing program

Disclosed is a visual axis detecting apparatus having: a visual axis detection circuit for detecting a visual axis of an observer; an arithmetic circuit for performing an arithmetic operation of calculating a distributed state of variations of visual axis positions obtained in a plurality of visual axis detections executed by the visual axis detection circuit in a state in which the observer is observing a predetermined point, with respect to the predetermined point; a determination circuit for determining a condition of the visual axis according to the result of detection by the visual axis detection circuit; and a change circuit for changing a determination process of determining the condition of the visual axis by the determination circuit, according to the distributed state of variations.

Visual axis detecting apparatus

In a camera including a light measuring device having a plurality of light measuring areas into which a light measuring field is divided, and a focus detecting device having a plurality of focus detecting areas which are set at a plurality of places including a place on a boundary between the plurality of light measuring areas, the focus detecting device is arranged to select a particular focus detecting area from among the plurality of focus detecting areas, and a deciding circuit decides a light measuring area which is to be subjected to a specific weighting, from among the plurality off light measuring areas by using a focus detecting state of each of the particular focus detecting area and focus detecting areas adjacent thereto if the particular focus detecting area lies on the boundary between the plurality of light measuring areas.

Camera having light measuring device operable based on focus detecting device

An optical apparatus including a detecting unit for detecting sight line direction of a human eye, a correcting data forming unit, electrically connected to the detecting unit, for forming correcting data as to personal difference of a human eye, a visual mark presenting unit electrically coupled to the correcting data forming unit for presenting a plurality of focus point detecting frames for sampling correcting data at different positions in a visual field and being capable of flickering and lighting without flickering, and a control unit for controlling the apparatus on the basis of the sight line direction and the correcting data.

Optical apparatus equipped with sight line detector

A line of sight detection device detects a user's line of sight by illuminating an eyeball of a user, receiving light from the eyeball of the user, detecting a wink of the user, detecting a line of sight of the user based on a light receiving state of a light receiving means, changing at least one of an illuminating condition of an illuminating means and a light receiving condition of the light receiving means, and repeating a line of sight detecting operation based on the light receiving state of the light receiving means during the line of sight detecting operation, the line of sight detecting operation being repeated without changing the illuminating condition of the illuminating means and the light receiving condition of the light receiving means when a wink detection means detects a wink of the user during the line of sight detecting operation.

Line of sight detection device and an apparatus having a line of sight

An apparatus for using correction data to correct for personal differences, to provide sight line information. The apparatus includes an image sensor for photographing an eyeball, a pupil diameter determination device for determining a pupil diameter of the eyeball in accordance with an output of the image sensor and a changing device for changing the correction data on the basis of the pupil diameter determined by the pupil diameter determination device.

A visual axis controllable optical apparatus, which is used in different postures. The optical apparatus includes a light detecting device for receiving light reflected by an eye, and detecting the intensity distribution of the received light, a storage device for storing personal data associated with a personal difference of the eye in correspondence with the different postures and a visual axis detecting device for detecting a visual axis. The visual axis detecting device detects the position of the visual axis using the personal data stored in the storage device corresponding to the posture of the optical apparatus, and the intensity distribution detected by the light detecting device.

Visual axis controllable optical apparatus including a visual axis

An optical apparatus for detecting rotation of an eyeball of an observer to provide sight line information, including an optical unit for imaging light flux from the eye of the observer, an image sensor for receiving light flux from the optical unit, and a control unit for designating a read-out region for the image sensor and reading out information from the read-out region.

There is disclosed an apparatus including an illuminating unit for illuminating an eyeball, a light-receiving unit for receiving light reflected by the eyeball to measure the state of an anterior eye portion, and a holding unit for holding the illuminating unit and the light-receiving unit. The apparatus can be easily assembled, and optical characteristics are properly determined to accurately detect the state of the anterior eye portion.

Growing community of inventors

Yokohama, Japan

Yoshiaki Irie