摘要:
A system for electromagnetically activating the shutter of a camera to provide different aperture openings by providing: an armature comprising a core and a coil, the core is capable of receiving current and the armature will produce a first magnetic field; a movable magnet that produces a second magnetic field, the magnet is positioned within the core in a manner that a first gap, a second gap, a third gap, a fourth gap, a fifth gap, a sixth gap, a seventh gap and a eighth gap will contiguously surround the magnet and be present between the core and the magnet so that the second magnetic field is coupled to the first magnetic field and the magnet is coupled to the shutter; and means coupled to the current means and the coil for setting the direction of current flow in the coil to a first direction or a second direction or for denying the presence of current flow in the coil so that when the coil receives no current a first magnetic field will not be present and the magnet will be at a first location and move the shutter to block the aperture and allow no light to enter the camera, and when current flow through the coil in a first direction the magnet will be attracted by the first magnetic field and move to a second location and move the shutter to form a first aperture size and if current flows through the coil in a second direction the magnet will be attracted by the first magnetic field and move to a third location and move the shutter to form a second aperture size.
摘要:
A device and method for electromagnetically activating the shutter of a camera to provide different aperture openings comprises:an armature having a core and a coil, the core is capable of receiving current, and the armature will produce a first magnetic field;a movable magnet member that produces a second magnetic field at one of its two ends, the second magnetic field is coupled to the first magnetic field and the other end of the member is coupled to one or more shutters; anda circuit capable of receiving current coupled to a coil for setting the direction of current flow in the coil to a first direction or a second direction or for denying the presence of current flow in the coil so that when the coil receives no current a first magnetic field will not be present and the member will be at a first location and move one or more shutter elements to block the aperture and allow no light to enter the camera, and when current flows through the coil in a first direction the member will be attracted by the first magnetic field and move to a second location and move one or more shutter elements to form a first aperture size and if current flows through the coil in a second direction the member will be attracted by the first magnetic field and move one or more shutter elements to form a second aperture size.
摘要:
In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.
摘要:
A protective housing for a camera comprising a pouch adapted to contain the camera, is characterized in that the pouch has at least one pivotable portion that can be pivoted about a pivot axis to open the pouch in order to allow the camera to be inserted into the pouch, and a manually depressible actuating button is supported on the pouch at the pivot axis to be able to be depressed along the pivot axis to similarly depress a shutter release button of the camera in order to initiate picture-taking.
摘要:
An electrical switch assembly has a pair of conducting resilient domes which snap inwardly to produce corresponding switching functions when downward pressure is applied at their respective centers and snap outwardly to produce opposite switching functions when the applied pressure is removed. The pair of domes are supported one within the other in spaced relation with their respective centers substantially in alignment. Pressure applying means, such as a push button, is mounted for movement in line with the aligned centers of the outer and inner domes to a first predetermined position to snap the outer dome inwardly and to a second predetermined position to snap the inner dome inwardly. The successive snapping actions of the two domes to produce corresponding switching functions provide respective stages of tactile feedback through the push button to the operator.
摘要:
A battery charging system detects if multiple battery cells to be recharged include rechargeable, secondary batteries or non-rechargeable, primary batteries. If the system detects that any one of the cells is a primary battery, then the charging system halts the charging operation. If all of the cells are secondary batteries, but the polarity of any battery cell is incorrect, then the charging system halts the charging process.
摘要:
An album (50) for photographic prints includes a front cover (52); a back cover (54); a binder member (56) attached between the front and back covers; an elongated, partially cylindrical shell member (78) attached to the binder member, the shell member having opposite ends (80, 82) and opposed longitudinal edges (90, 92), the longitudinal edges being attached to the binder member; and at least one album page (94) movably attached to the shell member, the page having opposed portions (96, 98) which extend around the opposite ends, whereby the page can be moved circumferentially around the shell member from a first position near one of the covers to a second position near another of the covers. The album may include a sensing device (30, 32) to detect movement of the at least one page and a produce a signal; and a system (124-160), responsive to the signal, for playing back sound messages or displaying text messages, or both, associated with photographic prints carried by the at least one page.
摘要:
A camera includes means for supporting an imaging element for recording a scene, an electrochromic filter disposed between the scene and the imaging element and a photoelectric element which emits electrical energy the value of which depends on an amount of scene light which is incident on the photoelectric element. At least a portion of the electrical energy emitted by the photoelectric element is used to directly control the optical density of the electrochromic filter, thereby controlling the amount of scene light which reaches the imaging element.
摘要:
A coupling device for controlling the shutter blades of a leaf type shutter. The coupling device includes two or more hubs that are each coupled to a shutter blade and a portion of a base and a continuous belt that is in contact with the hubs so that when the hubs rotate in a first direction the shutter blades will open and when the hubs rotate in a second direction the shutter blades will close.
摘要:
A shutter for a camera having a film exposure opening comprising a shutter curtain movably mounted in the camera for opening and closing the exposure opening, an electromagnetic driver operatively coupled to the shutter curtain for moving the curtain between open and closed positions when the driver is energized to cause movement in one direction, and a first physical stop associated with the electromagnetic driver for physically holding the driver against further movement in the one direction when the curtain reaches one of the open or closed positions. When the electromagnetic driver is energized to cause movement in an opposite direction, a second physical stop associated with the driver and spaced from the first stop physically holds the driver against further movement in the opposite direction when the curtain reaches the other of the open or closed positions. In a focal plane shutter having first and second shutter curtains movably mounted in the camera for opening and closing the film exposure opening, there is provided first and second of the aforesaid electromagnetic drivers operatively coupled to the first and second curtains, respectively, for moving the curtains between open and closed positions when the respective drivers are energized, and each of the electromagnetic drivers is provided with the aforesaid first and second physical stops for physically holding the associated drivers against further movement when the corresponding shutter curtains reach open or closed positions in accordance with the direction of energization of respective drivers.