Abstract: Provided are an imaging device, an imaging method, a program, and a non-transitory recording medium which simultaneously image a plurality of images having different imaging characteristics, and detect blurring of the plurality of images. Image signals having imaging characteristics different from each other are simultaneously obtained by an imaging unit including an imaging optical system constituted by a first optical system and a second optical system which are provided in different regions and have imaging characteristics different from each other and a directional sensor, true movement vectors are extracted from movement vectors detected from the image signals and degrees of certainty thereof, and blurring of an image resulting from a shake of the imaging unit is detected from the true movement vectors.

Abstract: Provided are an electro-optical split image focusing apparatus and method through which an in-focus position of a photographed plane with respect to the image of a subject can be detected with accuracy and speed. The apparatus comprises at least one electro-optical element disposed along an optical axis between a subject and a photographed plane. The electro-optical element is characterized by a refractive index that varies with distance along a perpendicular to the optical axis when a voltage is applied. An image of the subject is transmitted toward the photographed plane through the electro-optical element.

Abstract: A system constructs an image using virtual lenslets.

Abstract: A system constructs an image using virtual lenslets.

Abstract: A system constructs an image using virtual lenslets.

Abstract: In an auto focusing system of the present invention, a light from an object is guided by an optical section to a light receiving section constituted of an imager such as a photoelectric transducer, and the object is imaged as a digital image at the light receiving section. A movable split image prism is arranged between a position immediately before a light receiving surface of the light receiving section in an optical path of the optical section and a position outside the optical path. Then, a deviation amount of a vide signal based on light rays passed through the split image prism is detected by a control section, and focusing of the optical section is carried out based on the deviation amount.

Abstract: An internal indicator of a viewfinder of a camera includes a viewfinder optical system which includes a focusing screen on which an object image is formed through a photographic optical system of the camera; at least one optical deflector that is positioned on or in the close vicinity of the focusing screen and is provided with at least one deflecting surface; and at least two light emitters for illuminating the optical deflector from the outside of the viewfinder optical system, which emit at least two light beams of different colors to be incident on the optical deflector.

Abstract: In an auto focusing system of the present invention, a light from an object is guided by an optical section to a light receiving section constituted of an imager such as a photoelectric transducer, and the object is imaged as a digital image at the light receiving section. A movable split image prism is arranged between a position immediately before a light receiving surface of the light receiving section in an optical path of the optical section and a position outside the optical path. Then, a deviation amount of a vide signal based on light rays passed through the split image prism is detected by a control section, and focusing of the optical section is carried out based on the deviation amount.

Abstract: A novel optical position sensor is described that uses two component photodiodes electrically connected in parallel, with opposing polarities. A lens provides optical gain and restricts the acceptance angle of the detector. The response of the device to displacements of an optical spot is similar to that of a conventional bi-cell type position sensitive detector. However, the component photodiode design enables simpler electronic amplification with inherently less electrical noise than the bi-cell. Measurements by the sensor of the pointing noise of a focused helium-neon laser as a function of frequency demonstrate high sensitivity and suitability for optical probe beam deflection experiments.

Abstract: An optical head apparatus for a magneto-optical recording medium including a light beam source, an objective lens, a separating optical system, and a photodetector. The objective lens is provided for irradiating an output light beam from the light beam source as a focused light beam to the surface of the signal recording surface of the magneto-optical recording medium. The separating optical system separates the light beam radiated from the light beam source from a reflected light beam reflected by the signal recording surface of the magneto-optical recording medium via the objective lens. The photodetector receives the reflected light beam thus separated by the separating optical system. The separating optical system also includes an enhancement element which apparently increases the Kerr rotation angle of the reflected light beam.