Abstract: In the time detecting device of an alarm clock is provided with an hour gear wheel and an alarm gear wheel, each having an indication hand, engaging with a second hour gear wheel and a second alarm gear wheel respectively. An detecting cam plate is provided so as to be axially shiftable and continuously pushed and turned by the second hour gear wheel. A projection is formed on either the second alarm gear wheel or the detecting cam plate while a hole is formed on the other. When the respective phases of the projection and the hole coincide, the detecting cam plate is allowed to shift to actuate the alarm device.

Abstract: In an automatic focusing device for a camera lens, a safety device is provided for insuring that the camera lens will be focused when a coincident auto-focusing point signal is not produced. A movable focus adjustment member for focusing the lens has a first cam thereon defining a plurality of focusing positions and a latch mechanism is coactive with the first cam to select a focusing position in response to the receipt of the signal indicating a coincident auto-focusing point. The safety device includes a second cam on the focus adjustment member defining a focusing position corresponding to a predetermined pan focusing distance between zero and infinity and wherein the latching mechanism is coactive with the second cam when the coincident auto-focusing point signal is not produced.

Abstract: An automatic focusing device controls the setting of an actuating member to effect automatic focusing of a camera lens and is used in conjunction with a focus detecting unit which produces a focus detection signal corresponding to the object distance by photoelectrically comparing optical images transmitted by stationary and movable mirror systems. The automatic focusing device comprises pulse generating circuitry for generating pulses at a fixed repetition rate, a first counting circuit for counting pulses such that the number of pulses counted is a function of the angle of displacement of a movable mirror of the movable mirror system during a range scanning operation, and a second counting circuit connected to receive and memorize the pulse count counted by the first counting circuit when a focus detection signal is produced by the focus detecting unit and operative to count pulses such that the number of pulses counted is a function of the extent of movement of the actuating member.

Abstract: A camera equipped with an electronic shutter having an automatic focus detecting device capable of automatic focusing of the photographing lens through detection of the distance between the object being photographed and the camera comprises an electronic module for the automatic focus detection system, an electronic module for the automatic exposure control system, an electromagnet connected to both of the electronic modules, and an obstructing means capable of constraining the electromagnet at a first position during the course of displacement of the electromagnet from a first position to a second position.

Abstract: In an electric shutter having a photoelectric element, a time constant circuit for use in controlling exposure and a low brightness sensor circuit for use in connecting said photoelectric element in series with a comparator resistance and in sensing a low brightness in reference to its partial voltage, an exposure information input circuit for setting one reference voltage to be applied for determining said trigger levels of the two sensor circuits so as to feed exposure information such as film sensitivity, etc. and further having a function correction circuit between said reference voltage and one of said two sensor circuits.

Abstract: An alarm clock comprises at least one rotationally driven rotatable time wheel, at least one rotatable detecting wheel rotatable relative to the time wheel to phases corresponding to alarm signaling times by an alarm signaling time setting wheel, and a time detecting switch having an open switching state when the time wheel is out of phase with the detecting wheel and switchable to a closed switching state when the time wheel rotates into phase with the detecting wheel to thereby enable the sounding of an alarm at preselected alarm signaling times.

Abstract: An electromagnetic shutter release device is provided with an electromagnet including an armature. A control circuit including two delay circuits are connected to the electromagnet for energizing same for a first period upon the initiation of the shutter release operation and thereafter energizing same for a second period upon the initiation of the exposure operation. The armature is mounted for movement to a first position during the first period, movement into a second position between the first and second periods and maintaining of same in the second position in the second period and into a third position after the second period. The movement of the armature from the first to the second position initiates the exposure operation and the movement of the armature from the second to the third position initiates the aperture closing operation which in turn begins the energization of the electromagnet during the second period whereupon the armature is maintained in position.

Abstract: A focal point adjusting and change-over mechanism for an automatic focusing camera, including a mechanism for restricting a position of the camera photographic lens in response to a distance sensing signal, and a change-over mechanism manually operable to at least two positions including an automatic position and a manual position. The restricting mechanism is operative to provide automatic focusing of the lens when the change-over mechanism is set at a position for automatic operation, and the change-over mechanism renders the distance sensing signal or the restricting mechanism inoperative when set at the position for manual operation, and thereby manual focusing is carried out in accordance with the manually set position of the change-over mechanism in the manual position.

Abstract: A focal point detecting device comprises a light-receiving device having a plurality of light-receiving elements which receive incident light coming from two different light paths. In the first step, the light-receiving device receives the incident light coming from the second light path while the first light path is blocked and the values of the photoelectric outputs A.sub.1, . . . A.sub.n of each of the light-receiving elements are compared one with another and the compared values stored in a memory circuit. In the second step, the light-receiving device receives either the incident light coming from the first light path while the second light path is blocked or the incident light coming from both the first and second light path and the values of the photoelectric outputs B.sub.1, . . . B.sub.

Abstract: A self-timer for the automatic focusing camera capable of automatically determining the focus position of the taking lens provides with a range limiting means prior to automatic range detection in at least a part of the photographing range.The range limiting means is operated interlocking with the setting of said self-timer to limit the adjustment of the taking lens within a limited range.

Abstract: An automatic focusing camera automatically determines the focus position of the taking lens by detecting the distance between the camera and an object and equipped with a self-timer setting system and a focusing system selector system which selects between automatic focusing and manual focusing.A shutter locking member which normally locks the shutter interlocking with a setting operation of said self-timer setting system is released as said focusing system reflector system is set to manual focusing.

Abstract: Automatic focusing adjustor device provided with a focusing sensor signal corresponding to an object distance by photoelectrically comparing an optical image obtainable through a fixed mirror and another optical image obtainable through a movable mirror wherein when the focusing sensor signal is not obtained, two steps of distance adjustment may be made by an output signal from a brightness sensor circuit for use in sensing a brightness of the object.

Abstract: In a program shutter of the type in which the aperture opening gradually increases with the lapse of time, informations such as sensitivity of the film and the object distance are introduced by an electric circuit.The system has a switching circuit for exposure control. The trigger level of the switching circuit is determined in proportion to the film sensitivity and the object distance to vary the exposure control time corresponding to the informations to automatically determine a proper aperture for flash photography.The system is capable of providing a warning indication prior to the shutter operation if the exposure control time thus obtained is longer than the time during which the aperture is fully opened.

Abstract: In a camera of the type including an electronic flash light unit with an oscillating circuit and an electronic shutter which are both supplied with power from a common power supply, an inhibit circuit for an electric flash charge circuit is provided in which a base of the transistor in the oscillating circuit is connected to the output terminal of the exposure control circuit via a semi-conductor switching element. The semi-conductor switching element stops oscillation in the electric flash charge circuit while the exposure control circuit is in operation.

Abstract: A luminance detecting module and an focus detecting module are actuated in the first step of shutter release operation and an exposure control module is actuated in the second step. All of these modules are connected to a single electromagnet. When a photographing impractible signal is given in the first step of the shutter release operation, the electromagnet actuates a release locking member so that the shutter release motion is interrupted.

Abstract: A first detecting means for detecting the phase of an hour time wheel and a second detecting means adapted to cooperate with a projection provided with each of some of a plurality of minute indication leaves, said some leaves occurring at a constant interval, are provided. The first and second detecting means are associated together, and with detection of phase by the first detecting means the second detecting means is rendered capable of cooperation with the projection of a minute leaf. Subsequently, when the phase of the projection is detected by the second detecting means, an alarm device is operated.

Abstract: An automatic focusing camera comprises an automatic focus detecting electronic circuit for detecting the distance between the camera and an object, an electromagnet controlled by said circuit, a release member actuated interlocking with shutter release operation and adapted to actuate the shutter at the end of the operation, an armature lever controlled by said electromagnet to operate between a resting position and a taking lens focusing position interlocking with said release operation, a locking means which locks the shutter actuating operation of said release member with said armature lever at said resting position and allows the actuation of the shutter at the taking lens focusing position, and a selecting means for selecting between automatic focusing mode and manual focusing mode adapted to retract said locking means to a position where said locking means will not lock said release member when said manual focusing mode is selected.

Abstract: A second hand correction device comprising a second hand correction member which may be moved manually in inward and outward directions and in forward rotation and reverse rotation directions and a cam wheel, having a plurality of cams, which is fixed to the second hand axis. The second hand correction member is moved in such a direction as biased under an engagement with the cam wheel when the same is lowered, and engages with the cam at the rear half of its stroke. Subsequent lowering operation of the second hand correction member will cause the rotation of the cam wheel and thereby the second hand will be rotated by a specified angle to enable a repetitive continuous correction for the second hand.

Abstract: In a focal plane shutter for a single lens reflex camera having, on the side of the shutter aperture, two blade groups each consisting of a plurality of separate blades adapted to operate sequentially in exposure operation, a shutter blade device includes said two blade groups having at least some of blades formed of thin synthetic resin plates. A shielding member is provided between a reflex mirror and said blade groups and adapted to retract from an aperture shielding position during the exposure operation of said two blade groups and return to an aperture shielding position before and after the exposure operation.

Abstract: An alarm signaling time setting member is coupled to a minute indication drum having minute-scale alarm time graduations and an hour indication drum having hour-scale alarm signaling time graduations is intermittently advanced by the minute indication drum. First and second detection members for detecting the alarm signaling time are provided in correspondence to an hour time wheel and a minute time wheel respectively. The first detection member is geared to the second detection member, and the second detection member is geared to the minute indication drum to permit the detection member positions to be continuously set.