摘要:
A display device for a camera uses at least two display elements to display visual information such as focus information. Signals are produced, the relative phases of which indicate in-focus or out of focus conditions.
摘要:
A light measuring device capable of amplifying the difference of the time-sequential pulse output signals from the photoelectric sensor array regardless of the magnitude of said pulse output signals, comprises optical system means; means comprising a photoelectric sensor array having a plurality of photoelectric sensors for receiving the light passing through said optical system means and generating electric signals respectively corresponding to the intensity of light received by said photoelectric sensors as time-sequential signals of a determined interval; means for generating a comparison signal of a determined magnitude related to the output level of said electric signals; and processing means adapted to receive said electric signals and said comparison signal to generate output signals related to the difference of said signals in a sequential manner.
摘要:
This invention discloses a device for extracting the space frequency component of an image formed by an optical system. The device comprises means having a photoelectric element array including a plurality of photoelectric elements on which said image is projected and time-sequentially generating, at a predetermined period, a pulse output having a magnitude corresponding to the intensity of light received by each of the photoelectric elements, means for successively storing the respective pulse outputs, means for converting each of the stored pulse outputs into an AC signal, and means for adding together the AC signals and producing the same.
摘要:
A focus detecting apparatus comprises first means for forming phase outputs from said first and second photosensor arrays of phases respectively corresponding to the relative positions of said first and second photosensor arrays with respect to the light images thereon; second means for comparing the output corresponding to the amount of light entering said first photosensor array with the output corresponding to the amount of light entering said second photosensor array and forming a correlation output corresponding to said comparison; third means for forming outputs corresponding to the sharpness of light images on said photosensor arrays from the outputs from said arrays; and processing means for generating a synthesized output signal representing the focus state of said objective lens with respect to the object from the aforementioned phase outputs, correlation output and sharpness outputs.
摘要:
In a focus detecting device having a first and second photoelectric element arrays each including a plurality of photo-electric elements disposed so as to mutually correspond in position and optical means for forming a first image and a second image of an object on the first and second arrays, respectively, there is provided first means for calculating the differences between electrical outputs related to the outputs of the mutually corresponding ones of the photoelectric elements of the first and second arrays and adding together the quantities based on said differences, second means for calculating the difference between each electrical output related to the output of each of the photoelectric elements and each electrical output related to the output of the photoelectric element spaced apart from each photoelectric element with a predetermined number of photoelectric elements interposed therebetween in the direction of arrangement of the elements of the arrays and adding together the quantities based on said differences, and third means for detecting the focused condition of the objective lens on the basis of the outputs of said first means and said second means.
摘要:
This specification discloses a photoelectric converter device in which the output of a charge storage type photoelectric element array is fed back to a circuit for driving the array to thereby automatically control the charge storage time.
摘要:
A device for extracting a plurality of space frequency components from an optical image formed by an image forming optical system comprises a photoelectric element array including at least N photoelectric elements disposed in or near the image formation plane of the image forming optical system, and means for generating, on the basis of the output of each of the photoelectric elements of the array, an electrical output varying in phase in accordance with the displacement of the optical image in the direction of arrangement of the photoelectric elements.
摘要:
Apparatus for detecting displacement of optical image is disclosed which comprises a photosensitive element array, a first circuit, a second circuit and a phase difference measuring circuit. The photosensitive element array is composed of a number of photosensitive elements disposed on and near the focal plane of an image forming optical system through which an optical image is formed. The first circuit multiplies the electric outputs from photosensitive elements in the array by vectors whose phases sequentially increase or decrease, and then adds the products together to form an added output. The second circuit multiplies the electric outputs from photosensitive elements slightly shifted from the above elements in the same array, and then adds the products together to form a second added output. The difference in phase between the first and second added outputs is measured by the phase difference measuring circuit.
摘要:
Focus detecting apparatus for an optical system including first and second image forming optical means for forming the image of an object along first and second spatially separated light paths, first and second photosensitive element arrays each comprising a plurality of photosensitive elements and producing an electrical signal representative of the intensity distribution pattern of the light incident thereon, and circuit means for detecting the focus of the optical system in accordance with the electrical signals from the first and second arrays. The circuit means includes a first processing circuit, a second processing circuit and a phase comparing circuit. The first processing circuit produces an electrical output having a phase representative of the positional relation between the first array and the intensity distribution pattern of the light incident on the first array, in accordance with the electrical signal from the first array. The second processing circuit produces an electrical signal having a phase representative of the positional relation between the second array and the intensity distribution pattern of the light incident on the second array, in accordance with the electrical signal from the second array, and the phase comparing circuit compares the phases of the electrical outputs from the first and second processing circuits and produces an output signal representative of the focus position of the optical system.
摘要:
A light source apparatus is equipped with a discharge lamp, which has a glass tube that forms a light emitting part and a base member that is coupled thereto, and a mounting apparatus that holds the discharge lamp via the base member. Therein, the base member has a flange part that contacts positioning plate of the mounting apparatus, and a fixed part that is urged with a pressing force that presses the flange part to the positioning plate. Furthermore, the mounting apparatus has a fixing arm that urges the fixed part by a compression coil spring.