Victor Company of Japan, Limited

Yoshichi Otake

Hideki Tengeiji

Takashi Shinozaki

Yuzuru Inoue

Takayuki Takubo

Toshiya Endo

Shinsuke Ono

Kaichiro Nomoto

A still image acquisition device includes: a fluctuation detection unit () for detecting a horizontal or a vertical fluctuation generated in an imaging device; light refraction means (A,B) for refracting light into an arbitrary direction; hand shake control means (A) for controlling the refraction direction of the light by the light refraction means; control amount detection means (A,B) for detecting control amounts of the light refraction means (A,B); angle calculation means (B) for calculating the hand shake angle of the horizontal direction or the vertical direction from the detected control amounts; acquisition reference time decision means (C) for deciding a reference time for acquiring a still image according to the time when the absolute value of the calculated hand shake angle of the horizontal direction or the vertical direction is zero or a minimum value; and a still image processing unit () for acquiring the hand shake-corrected image corresponding to a moment immediately after the decided acquisition reference time as a still image.

Still image acquisition device, still image acquisition method, and image fluctuation correction device

An image fluctuation correction device includes a shake detecting meansfor detecting a shake occurring in a photographic device, two movable refraction elementsA,B arranged on an incident light path to an optical lensto change a direction of refraction of incident light on the optic lens, two rotating meansA,B for rotating each of the two movable refraction elementsA,B about an optical axis within a predetermined movable range, a rotating control amount calculating meansA for calculating rotating control amounts of the two rotating meansA,B so as to cancel the shake detected by the shake detecting means, and rotating control meansB for controlling the two rotating meansA,B on the basis of the rotating control amounts calculated by the rotating control amount calculating meansA.

Image fluctuation correction device

An image forming optical device to form an image of optical light having prism shaped first and second optical devices. The first optical device has a first interface to pass the optical light into the first optical device, a first reflect interface to reflect the optical light from the first interface and a first output interface to output the optical light from the first reflect interface. The second optical device has a second interface to pass the optical light from the first output interface, a second reflect interface to reflect the optical light from the second interface and a second output interface to output the optical light from the second reflect interface. An optical axis of the optical light passing through the first interface is parallel to an optical axis of the optical light passing though the second output interface.

Prismatic image forming optical device adapted for miniaturization

Light from an object is incident to an image sensing device and converted into an image signal. The image sensing device is exposed to the light by a shutter, provided between the object and the solid-state image sensing device, for a first exposure period and a second exposure period that directly follows the first exposure period. The first and the second periods are the same length in time. Each exposure period for exposing the solid-state image sensing device to the light corresponds to one frame or one filed of the object. A passage of the light that has passed the shutter and incident to the solid-state image sensing device is shifted in a predetermined direction with respect to the solid-state image sensing device at least in the second exposure period. Image signals converted for the first and the second exposure periods are combined to generate a composite image signal.

Solid-state image sensing apparatus with a relative positional light shift

A video camera with an optical system including a zoom lens system and a rear lens system provided therebetween wherein focusing is performed by varying the distance between the rear lens system and an imaging pickup device of the video camera. The video camera further includes a first sensor for sensing the position of the rear lens system to detect a relative distance between the rear lens system and the image pickup device, a second sensor for sensing the position of the zoom lens system to detect a focal length of the optical system. An arithmetic unit provided in the video camera calculates a distance to an object on the basis of the detected relative distance and the detected focal length and, in response to zooming operation, calculates a relative distance between the rear lens system and the image pickup device on the basis of the calculated distance to the object and the focal length detected by the second sensor. The arithmetic unit generates an error signal on the basis of the difference between the calculated relative distance and the relative distance detected by the first sensor and controls the position of the rear lens system on the basis of the generated error signal.

Focusing control and indication of information relating to an object

A television camera which carries out color separation by use of vertical correlation in a picture, comprises a pickup element for scanning a target, a color separating stripe filter, and an optical filter for separating a single incident light beam in a direction which is the same as the scanning direction of the pickup element and a direction perpendicular to the scanning direction, by acting on the single incident light beam in two dimensions. The optical filter comprises a first double refraction transparent plate for separating a light beam in a direction which coincides with the scanning direction of the pickup element, a second double refraction transparent plate for separating a light beam in a direction which is rotated by 45.degree. with respect to the scanning direction, and a third double refraction transparent plate for separating a light beam in a direction perpendicular to the scanning direction. The first, second, and third double refraction transparent plates are stacked.

Television camera having an optical filter

An image pickup device comprises a main image pickup body, and a holding part provided angularly rotatable on one side surface of the main image pickup body. The holding part is mounted to rotate angularly in a plane other than a plane which is parallel to a vertical plane, where this vertical plane includes a center of gravity of the image pickup device and an optical axis or a straight line parallel to the optical axis of the image pickup device. The holding part is separated by a predetermined distance from the one side surface of the main image pickup device at an accommodated position thereof where the holding part extends along the one side surface of the main image pickup body, and a free end of the holding part lies substantially within the above vertical plane at a fully rotated position thereof where the holding part is drawn out in front of the main image pickup body.

Image pickup device having a holding part

The image of a subject imaged on the photoelectric conversion surface of a pickup tube of the color television camera is defocused in a given direction by a given amount to make a blur so that beat interference due to specific black and white pattern of the subject does not occur in the reproduced picture. In first and second embodiments of the present invention, at least one optical filter having specific characteristics is employed for defocusing the image, while in a third embodiment, an aperture stop is used to defocus the image by utilizing the aberration of the lens system of the color television camera. The aperture stop of the third embodiment may be used together with the optical filter(s) of the first and second embodiments.

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Kanagawa-ken, Japan

Yoshichi Otake