摘要:
A zoom lens assembly has a stationary barrel, a middle barrel and a movable barrel. The middle barrel is formed on its outer periphery at a rear end thereof with a helicoidal thread, which engages with a helicoidal thread formed on the inner surface of the stationary barrel. The movable barrel holds a zoom lens system therein, and is formed on its outer periphery at a rear end portion with a helicoidal thread which engages with a helicoidal thread formed in the inner surface of the middle barrel. The middle barrel is provided at its rear end portion with a driven gear having a small face width. The driven gear meshes with a drive gear through a cut-out of the stationary barrel. Rotational movement of a zoom motor is transmitted to the driven gear of the middle barrel through the drive gear, so that the middle barrel is rotated to move in the direction of the optical axis of the assembly. The gearing portion of the drive gear moves along with the axial movement of the driven gear, so as to maintain the engagement between these gears.
摘要:
According to the invention, search and extraction of images obtained by capturing the same region are enabled to be performed at low load and in an easy manner. A multi-angle information generating apparatus 10 which groups images that are obtained by capturing by plural imaging apparatuses has: sensing metadata acquiring unit 101 which acquires sensor information relating to capturing conditions of the imaging apparatuses 20; focus-plane metadata deriving unit 102 which derives focus planes including the images taken by the imaging apparatuses 20, based on the acquired sensor information; grouping judging unit 103 which groups the images on the basis of positional relationships of the focus planes; and multi-angle metadata recording unit 104 which records results of the grouping as multi-angle information with correlating the information with the images.
摘要:
A liquid crystal display unit has a transmissive liquid crystal plate having a number of pixels arranged on a two-dimensional basis, on which an image is formed, and a light source unit emitting beams of light of a plurality of luminescent colors for irradiating said liquid crystal plate from back. An interface circuit receives an image signal representative of a color image to sequentially form on said liquid crystal plate a plurality of separation images in which the color image is separated in association with the plurality of luminescent colors of said light source unit. The interface circuit causes said light source unit to flash with a luminescent color associated with a separation image formed on said liquid crystal plate in synchronism with a sequential formation of the separation images onto said liquid crystal plate. Beams of light emanated from the light source unit and transmitted through the liquid crystal plate reproduce an image.
摘要:
A photographic camera having an exposure frame at the rear end of a lens barrel. A camera body is molded integrally with the lens barrel. Flanks are formed by a pair of vertical surfaces lying in planes parallel to the optical axis on inner surfaces of the frame receiving surface at locations that define four corners of an exposure aperture so as to extend radially outward from the inner surface of the lens barrel adjacent the rear end thereof. An aperture frame is detachably mounted on the camera body from behind the camera to define the exposure aperture. The flanks formed adjacent the rear end of the lens barrel or the frame receiving surface are effective to prevent individual frames of film from being subjected to undesirable vignetting. The aperture frame is mounted on the camera body from behind. A pair of masking plates is provided for panoramic photography. The rear side of the camera body is provided along vertically opposite edges of the barrel's rear end with these masking plates, and the aperture frame is mounted on the rear side of the camera body behind these masking plates.
摘要:
A camera with a variable focus lens device, in which a lens position detecting device detects the focal length of the photographing lens from the amount of movement of a movable member that is capable of being rectilinearly advanced and retracted along the optical axis of the photographing lens, in order to provide an autofocusing function to accurately focus upon an object. Thus, the focal length can be detected in a simplified manner, and the influence of errors during assembly of the components of a photographing lens driving system can be minimized. A flare preventing mask effectively prevents flare occurrence in correspondence to variations in the position of the photographing lens. The lens retaining structure simplifies the assembly of the front lens group into a movable lens mount, and reduces the size and weight of the camera. A position sensor is coupled to the movable member which moves while maintaining a predetermined relation with the movement of the photographing lens, and the position of the photographing lens is detected from the amount of movement of the movable member. A key member prevents rotation of the movable lens mount and so allows the movable lens mount to be advanced or retracted a lesser distance than the movable lens mount. The flare preventing mask is mounted on the key member. A rear focusing type autofocusing mechanism is provided by inserting a holder retaining the front lens group into the movable lens mount from the front end of the lens mount.
摘要:
A stepping motor drives camera shutter sectors to open and close an exposure aperture. The stepping motor is rotated at a speed corresponding to an exposure value during the time between the start position of the shutter sectors and their position when they start opening the exposure aperture. After the sectors start opening the exposure aperture, the stepping motor is rotated at a constant speed not associated with the exposure value.