摘要:
An automatic exposure control circuit comprises a pair of lamp circuits for displaying the fact that an automatic exposure is feasible and the exposure period which is automatically determined, as well as an electronic shutter circuit and an automatic shutter release circuit, and optionally a color temperature measuring circuit. The control circuit is associated with a photomicrographic apparatus which takes a picture of a specimen being observed in a microscope. When taking a picture, a photometry is made of light from a specimen being photographed in order to determine initially whether an automatic exposure control is feasible for the specimen, and if it is feasible, to provide an automatic release of an electronic shutter by means of a motor, thereby activating the electronic shutter and also producing a lamp display during the period when the electronic shutter is operating. Optionally, a color temperature of the light from a light source which is used to irradiate the specimen is measured.
摘要:
Controls for cameras adpated to use coupled and non-coupled objectives interchangeably. An electrical circuit is provided for utilizing a variable resistor with a coupled objective and direct light measurement through a stopped-down diaphragm with a noncoupled objective, these different operations being determined by a manually operable switch. In the event that a non-coupled objective is mounted on the camera and this latter manually operable switch is not positioned to directly measure light through the stopped-down diaphragm, the exposure time is the equivalent of a bulb exposure, lasting only until the operator releases a shutter-tripping member.
摘要:
An imaging apparatus connectable to a client apparatus via a network includes an imaging optical system, an image sensor, an infrared cut filter (IRCF) driving circuit that inserts and retracts an IRCF into and from an optical path of the imaging optical system, and a communication circuit that receives, from the client apparatus, an automatic insertion and retraction control command for causing the imaging apparatus to automatically control insertion and retraction of the IRCF and additional information about insertion and retraction of the IRCF. The communication circuit transmits, to the client apparatus, operation information indicating which of cases the imaging apparatus uses the additional information received by the communication circuit. The cases include a case where the IRCF is inserted into the optical path, a case where the IRCF is retracted from the optical path, and both the cases where the IRCF is inserted and where the IRCF is retracted.
摘要:
A camera that has an optical unit includes: a base plate; a plurality of openings which is provided on the base plate and each of which has a substantially rectangular opening shape having long sides and short sides; and a plurality of optical components each of which covers any of the plurality of openings. The plurality of openings is disposed to be cyclically placed in one optical path through rotation of the base plate, and is disposed such that a part of a long side of each opening thereof faces a part of a short side of another opening thereof adjacent thereto.
摘要:
An optical apparatus includes a stop having an aperture, two filter members each including a first area that includes a transmissive part and a gradation part having a transmittance that is lower than the transmittance of the transmissive part and that is changed in a moving direction of the filter member, an actuator that drives the two filter members, and a controller that controls the actuator. The two filter members are disposed so that both changing directions of densities of the gradation part and moving directions are opposite and the first area has a size capable of covering a whole of a first aperture. The controller controls the actuator so as to always move in an area between a first position and a second position. The transmissive part has a size that is incapable of covering the whole of the first aperture.
摘要:
A light amount adjustment device capable of operating shutter blades and a light amount adjustment member by a common drive source, while preventing light incident through an aperture from being momentarily interrupted by the shutter blades when the light amount adjustment member advances to and retreats from the aperture. After a drive member's cam shaft is moved by an energized actuator to a position where an ND filter advances to the aperture, the actuator is deenergized and the cam shaft is moved by a spring force to a position where the ND filter advances to the aperture. After the cam shaft is moved to a final position by the energized actuator, the actuator is deenergized and the cam shaft is moved by the spring force to a position where the ND filter retreats from the aperture. During this time, the shutter blades open and close on outside of the aperture.
摘要:
An imaging device that includes a control unit is provided. The control unit switches between a day mode and a night mode. In the day mode, image capture is performed while an infrared cut filter is placed on an optical path, and in the night mode, image capture is performed while the infrared cut filter is removed from the optical path. Immediately after shifting from the day mode to the night mode, in the night mode, as the amount of incident light decreases, the control unit increases an irradiation intensity of an infrared irradiation portion from zero while a gain is maintained at a first gain value. When the amount of the incident light further decreases after the irradiation intensity reaches a maximum, the control portion increases the gain from the first gain value.
摘要:
A camera and a method for performing auto-focusing applying thereto are provided. The camera adjusts a focus using two auto-focusing methods if specific photographing conditions are satisfied.