摘要:
A microfiche on which a large number of characters are formed in an alternating arrangement is movable behind a mask in such a manner that at each position of the microfiche relative to the mask a desired group of characters is displayed through respective apertures in the mask. Lenses are disposed behind the apertures to project images of the characters therethrough onto a viewing screen. A reflection support member is disposed behind the microfiche and is formed with a stepped surface on which are disposed a plurality of concave reflectors, one reflector behind each lens. A lamp radiates light onto the reflectors, from which the light is reflected and focussed into the respective lenses, thereby illuminating the characters on the microfiche from behind. The radii of curvature and light receiving frontal areas of the reflectors differ in accordance with the distances of the reflectors from the lamp and the respective lenses.
摘要:
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the drivement and rotational direction of which are automatically controlled depending upon various conditions of the camera to implement required advancement of the film.
摘要:
A light transmitting screen capable of directing and focusing light images falling thereon, comprising a plurality of lens systems, each having a particular optical axis, making up the screen elements and each of which transmits parallel light rays incident thereon such that the light rays emerge parallel to each other. The lens systems may be of different refractive powers and have their optical axes disposed in parallel or at varying angles with each other and all are adjacently arranged in the form of a flat, curved or segmented screen with front and rear surfaces. When light is incident upon the screen from one side, the light rays pass through and are directed by the individual systems in accordance with the arrangement of their optical axes and refractive powers, so that many varying optical and lighting effects may be achieved on the other side. Each lens system may comprise a series of suitable lens surfaces arranged on a common optical axis or an optical cylinder or fiber guide.
摘要:
A front body construction of a motor vehicle includes a lower dash panel for separating an engine compartment and a cabin and a cowl portion provided on the lower dash panel such that a lower end of a windshield is supported at an upper portion of the cowl portion. The cowl portion includes an upper dash panel attached to an upper end portion of the lower dash panel so as to form a bottom wall of the cowl portion and a front cowl panel attached to an upper face of the upper dash panel so as to form a front wall of the cowl portion. The front cowl panel has, in a lateral direction of a vehicle body, opposite sides and a central portion such that space for an auxiliary unit is provided not only forwards of the front cowl panel in a longitudinal direction of the vehicle body, but also on at least one of the opposite sides of the front cowl panel. At least one of the opposite sides of the front cowl panel is disposed rearwards of the central portion of the front cowl panel in the longitudinal direction of the vehicle body, and the lower end of the front cowl panel is disposed, on at least one of the opposite sides of the front cowl panel, at a location identical with that of or rearwards of an upper end of the lower dash panel in the longitudinal direction of the vehicle body.
摘要:
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the drivement and rotational direction of which are automatically controlled depending upon various conditions of the camera to implement required advancement of the film.
摘要:
An improved focusing position detection apparatus is capable of detecting a focusing position speedily by use of a single photoelectric conversion element array. The photoelectric conversion element array is positioned so that the opposite end portions of the element array are at different distances, physically or optically, from an object and the photoelectric conversion element array is divided into three portions, the opposite end portions and an intermediate portion, and the electric output from each portion of the photoelectric conversion element is analyzed, whereby the moving direction of an optical system for obtaining the focusing position is determined.
摘要:
A vehicle slide-door supporting structure is provided which includes: a slide door which is a side door that opens and closes an opening through which a person gets into and out of a vehicle, the opening being formed in a side part of a vehicle body, the side door being slid in the front and rear directions so that the opening is opened and closed, and the opening being opened when the side door is slid rearward; and a driving mechanism which is connected to the slide door and drives the slide door, in which one part of the driving mechanism is attached to a tail lamp which is disposed at the rear part of the vehicle body.
摘要:
A focusing position detection circuit provided with a pair of light receiving element arrays respectively disposed in front of and behind a predetermined focusing plane of an optical system, capable of determining the position of the optical system by the output signals of the light receiving element arrays, and outputting an analog signal corresponding to the position of the optical system in the defocused range, but in the focused range with a predetermined tolerance, outputting a focused signal at a predetermined level.
摘要:
A hologram lens capable of converting an output beam of light emitted from a semiconductor to a reconstruction light suitable for reconstructing holograms is prepared by use of the object light, which resembles a beam of light emitted divergently from a semiconductor laser for reconstructing holograms and which travels, in the opposite direction to the travelling direction of the beam of light from the semiconductor laser, in such a manner as to converge on a light emitting portion of the semiconductor laser, and the reference light which is an isotropic beam with a circular cross section. The object light is obtained by use of an optical system capable of converting an output beam emitted from semiconductor lasers to an isotropic beam of light with a circular cross section when the output beam of light is caused to pass through the optical system from its input side Lin to its output side Lout, and by causing an isotropic beam of light with a circular cross section to pass through the optical system from the output side Lout to the input side Lin.
摘要:
A tonneau cover apparatus for an automobile including a baggage compartment, a baggage compartment opening, and a gate which covers the baggage compartment opening to be openable is provided. The tonneau cover apparatus includes a cover member extending from a position spaced apart from the baggage compartment opening toward the baggage compartment opening to cover the baggage compartment, and a guide portion which is formed at a portion of the baggage compartment opening to be covered by the gate and guides vertical movement of the cover distal end of the cover member.