摘要:
There is disclosed an image-pickup unit which is capable of locating precisely an image-pickup element and capable of repressing a separation of a cover glass or the image-pickup element and the flexible circuit board. The image-pickup unit comprises an image-pickup element, disposed at the side of a first surface of a flexible circuit board, for converting light incident through an opening portion formed in the circuit board into an electrical signal; a cover member fixed to a second surface of the circuit board to cover the opening portion; a first holding member disposed at the side of the first surface; and a second holding member, for holding an optical element disposed at the side of an incident surface of the cover member, held by the first holding member. The first holding member is in contact with the first surface of the circuit board, and a biasing member biases the cover member from the side of the second holding member toward the first holding member.
摘要:
There is provided an image pickup apparatus which is capable of detecting foreign substances with ease and reliability regardless of a shooting condition. A foreign substance in the camera main body 101 is detected. The camera CPU 409 provides control such that a foreign substance detecting process is started when the power switch is turned on.
摘要:
A focus detecting device for detecting images from different pupil areas on time-shared basis, and detecting the phase difference of the images from the different areas, thereby detecting the defocus amount, is described. The focus detecting device of this type is incapable of exact defocus amount detection, because of the influence of the relative movement between the object and the photographing optical system. The exact defocus amount can be determined by detecting images from a same pupil area on time-shared basis, determining the phase difference between such images and effecting correction corresponding to the phase difference between the images from the same pupil area.
摘要:
A focusing detecting device is disclosed having apparatus for forming object light patterns whose relative position changes in conformity with a focus state of an objective lens. Light flux passes through different areas of an exit pupil of the objective lens, and circuitry receives and photoelectrically converts the light patterns, and detects the focus state of the objective lens on the basis of the photoelectrically converted signal. The focusing apparatus accroding to the present invention a plurality of sets of structures for forming light patterns and means for photoelectrically converting the light patterns which are provided at different distances from the position of the optic axis of the objective lens. Also disclosed are means for making (a) the shapes of the areas of the exit pupil through which the light flux is passed to form the light patterns, or (b) intervals between the centers of gravity of said areas, or (c) both, different between a position in the vicinity of the optic axis of the objective lens, and a position distant therefrom.
摘要:
A camera apparatus having means for setting an optical grating at a desired location in the viewfinder includes a viewfinder for observing a prospective image plane of an objective lens, a light dividing mirror for reflecting the light toward the viewfinder, and a scanning plate having a reflective optical grating thereon for scanning the image of an object on the prospective image plane. Light receiving circuitry is provided for receiving light reflected by the optical grating through the light dividing mirror, and for forming an electrical signal representing the focus adjusting state of the objective lens. Structure is provided for setting the optical grating in a desired position in the viewing field of the viewfinder.
摘要:
There is disclosed an image-pickup unit which is capable of locating precisely an image-pickup element and capable of repressing a separation of a cover glass or the image-pickup element and the flexible circuit board. The image-pickup unit comprises an image-pickup element, disposed at the side of a first surface of a flexible circuit board, for converting light incident through an opening portion formed in the circuit board into an electrical signal; a cover member fixed to a second surface of the circuit board to cover the opening portion; a first holding member disposed at the side of the first surface; and a second holding member, for holding an optical element disposed at the side of an incident surface of the cover member, held by the first holding member. The first holding member is in contact with the first surface of the circuit board, and a biasing member biases the cover member from the side of the second holding member toward the first holding member.
摘要:
A focus detecting device for determining the focus state of an imaging optical system, of a type for time-sequentially entering light beams, transmitted by different areas of an imaging optical system, into a sensor and detecting the phase difference between the image signal obtained from the sensor means corresponding to such time-sequentially entered light beams. The device determines the positional difference in the vertical direction of the light beams (images) time-sequentially entering the sensor, and determines the storage positions of the outputs (image signals) from the sensor corresponding to the light beams (images) of the respective areas, thereby enabling exact focus detection even in case the images are received in vertically different positions on the sensor.
摘要:
A camera includes a fixed first mirror for both reflecting a light flux and transmitting the light flux therethrough, a second mirror for reflecting a part of the light flux transmitted through the first mirror toward a particular device, the second mirror being capable of moving between a non-exposure position and a mirror-retracted position, and a light blocking member movable in interlocked relationship to a movement of the second mirror in such a manner that, when the second mirror is located at the non-exposure position, the light blocking member is located at a light blocking position at which the light blocking member blocks at least a part of the light flux transmitted through the first mirror, and, when the second mirror is retracted to the mirror-retracted position, the light blocking member moves to a retracted position at which the light blocking member is retracted from the light blocking position.
摘要:
A camera includes a motor, a structural body arranged to support the motor through an elastic member, and a power transmission mechanism for transmitting the rotation output of the motor to a camera operating mechanism. The power transmission mechanism includes a worm gear secured to the output shaft of the motor, a helical gear engaging the worm gear and a belt arranged to transmit the rotation output of the motor to another rotary member.
摘要:
An auto focusing device or a camera including such a device has a focus detecting circuit for detecting the defocus states of a plurality of objects. A calculation circuit calculates a lens position and an aperture value which are capable of placing at least two of the plurality of objects in focus on the basis of the detected defocus states. When a defocus amount difference between the two objects is outside of a predetermined range, the calculation circuit calculates a lens position capable of placing two other objects, the defocused amount difference between which is within the predetermined range, in focus.