Matches 1 - 50 out of 72 1 2 >
Match Document Document Title
7603030 Optical apparatus for correcting the movement of a focusing lens in accordance with a change in focal length  
An optical apparatus includes a zoom optical system including a focusing lens unit, a first cam member that rotates around the optical axis and moves along the optical axis in a...
7596308 Lens position adjusting apparatus, lens position adjusting method and computer-readable medium  
A CPU 11 in a digital camera 1 determines that the photography environment is dark and includes a spot light source, in the case where the number of pixels that have a higher luminosity than a...
7505678 Control apparatus, control method, and computer program  
A control apparatus for controlling a driver driving an optical element of an image pickup device to adjust a focus position of the image pickup device in the capturing of an image of a subject,...
7454133 Solid-state image sensor and automatic-focus camera using the same  
A solid-state image sensor for automatic focus with highly precise automatic focus performance is realized at low cost. In the solid-state image sensor for automatic focus which has paired linear...
7228069 Focusing method for digital camera using plural spatial frequencies  
An automatic focusing method includes the following steps: providing a digital camera module, which includes a lens member, an image sensor member, a distance-measuring member, a signal-processing...
6701075 Focus adjusting apparatus, image sensing apparatus, focusing method, program, and storage medium  
The present invention, employing a method of obtaining a final focus position by re-driving a lens before an actual image sensing operation in the vicinity of a focus position which has been...
5995144 Automatic focusing device using phase difference detection  
In a still video camera or the like which employs a solid-state image sensor, such as a CCD, a first calculation of the amount of correlation in an AF sensor is executed by using a smaller number...
5842059 Automatic focus adjusting device  
An automatic focus adjusting device for automatically adjusting focus by using a predetermined signal component of a picked-up image signal outputted from an image sensor is arranged to find the...
5740477 Multi-point object distance measuring device  
A multi-point object distance measuring device which includes a plurality of object distance measuring areas, and a detecting device for detecting the amounts of defocus or distances of objects in...
5737646 Auto focus camera in which a lens position is changeable in accordance with a photographing mode  
In an auto focus camera in which a lens position is changeable in accordance with a photographing mode, based on measured object distance, it is judged whether or not measuring distance can be...
5715483 Automatic focusing apparatus and method  
An automatic focusing apparatus moves a focusing lens once over a full movement range from the nearest point or from the infinite point so as to cause a photoelectric detector to output an...
5689740 Focus detection device  
A focus detection device to improve the level of confidence of focus detection results of an object image by determining the defocus amount based on the filter processing data computed by a filter...
5666569 System and method for detecting and indicating proper focal distance in a fixed lens camera  
A fixed lens camera comprises a fixed focus lens, an infrared filter, and an optical low pass filter, all disposed in succession within a housing, coaxial with an optical axis. Light from a target...
5666562 Automatic focusing system  
An automatic focusing system comprises a focus detecting circuit arranged to detect the state of focus on the basis of a signal component which is extracted from an image signal and varies with the...
5664238 Focal controller of camera  
In a focal controller of a camera, two brightness components in different frequency bands are obtained by two band pass filters from a video signal obtained by image pickup. Integral values a and b...
5606382 Manual focusing circuit using a signal stabilizer  
A manual focusing circuit of a camera comprising a rotation ring having a plurality of projections, wherein the ring is manually rotated forward and rearward by a user. The manual focusing circuit...
5404013 Infrared imaging system having an automatic focusing control  
An infrared imaging system comprises an optical system for forming an image of a target on an infrared detection array and an automatic focusing mechanism, wherein an output image signal of the...
5378973 Automatic eye angle adjusting apparatus for an electronic view finder and method thereof  
An automatic eye angle adjusting apparatus in a camcorder for automatically moving an electronic view finder in accordance with camcorder set motion includes a set motion detector for output of a...
5369435 Contrast detecting apparatus for controlling an automatic focusing operation of an imaging apparatus  
A contrast detecting apparatus includes first extracting means for extracting a signal component of a first frequency band from a luminance signal obtained by imaging a subject, second extracting...
5353089 Focus detection apparatus capable of detecting an in-focus position in a wide field of view by utilizing an image contrast technique  
A focus detection apparatus of this invention can select one of a plurality of distance measurement areas in a photographing area, and obtains an in-focus point on the basis of contrast data of an...
5337084 Automatic focusing device utilizing a trend of variation and degree of reliability of a focusing evaluation value signal to improve image focusing  
An automatic focusing device including a lens group by which movement of a focused field of an object changes, a drive motor for moving the lens group, a luminance processing circuit for...
5264890 Automatic focusing apparatus  
An image pickup element picks up an image formed by an optical system. A drive mechanism performs focus adjustment of the optical system on the basis of a signal output from the image pickup...
5260736 Auto focus control device  
A broad band pass filter and a narrow band pass filter are provided. The broad band pass filter detects a moving direction of the focus lens certainly and a peak of the evaluative value rapidly....
5235375 Focusing position detecting and automatic focusing apparatus with optimal focusing position calculation method  
A driving section relatively drives an optical system and an object in a direction of an optical axis of the optical system. An information detecting section detects information of the object...
5210564 Automatic focusing device employing a frequency domain representation of a digital video signal  
An automatic focusing device has an A/D converter for converting a supplied video signal to a digital signal; an orthogonal converter for converting a video signal transmitted from the A/D...
5157435 Automatic focusing apparatus for a video camera and the method thereof  
The present invention relates to an automatic focusing apparatus for a video camera and the method thereof, and particularly to an automatic focusing apparatus for a video camera of an active type...
5128706 Optical filtering device and method for using the same  
A filtering device for carrying out a filtering process in a space domain of image data derived from an external visual image input means and then delivering control information to a controlled...
5072250 Autofocus apparatus  
In an autofocus apparatus for an imaging means such as a TV camera, an object image signal is produced by an imaging means and a focusing operation is conducted automatically by moving a focusing...
5008695 Rangefinder for camera  
An active rangefinder for use in a camera. The rangefinder has a light-emitting device, a spot light position detector disposed at a given distance from the light-emitting device, head amplifiers,...
5005086 Focus control apparatus having two focusing speeds  
A focus control system for a video camera determines a first gradient indicative of a change in value of a predetermined frequency component in the video signal for first and second positions...
4992859 Automatic focus control apparatus using primary color signals  
An automatic focus control apparatus that makes effective use of the chromatic aberration of a lens to detect focus position information on the basis of amplitude values of color signals, whereby...
4975726 Automatic focusing apparatus  
An automatic focusing apparatus uses an image signal provided by a lens system of a camera for focusing the taking lens system. The apparatus includes: a lens system; a pickup element for...
4967280 Image sensing apparatus having automatic focusing function of automatically matching focus in response to video signal  
In a video camera having an automatic focusing function, a focus evaluating value is calculated as the sum of first and second focus evaluating values extracted using output of two filters having...
4967279 Automatic focusing circuit  
An automatic focusing circuit in a video camera separates a high frequency component from the video signal obtained in an image sensing circuit 4 for every field. After the separated high frequency...
4903135 Automatic focusing system  
An automatic focusing apparatus having a focusing lens system and an image pickup device for converting a light beam incident thereon into the corresponding electrical signal. The automatic...
4887125 Method of and device for detecting focusing condition of image incident upon image sensor  
A system for detecting focusing conditions of an image incident upon an image sensor. According to a first aspect of this invention, the system is characterized by the signal processing sequence of...
4876565 Apparatus and method of underwater optical recording  
Underwater photography apparatus of the type disclosed in U.S. Pat. No. 4,707,094 is improved to overcome problems from backgrounds or other "non-clear water" conditions by inclusion of a nulling...
4843413 System which uses threshold counts to achieve automatic focus  
Apparatus for generating automatic focus signals for positioning a lens includes a circuit for calculating a difference value between a selected pixel intensity level and the average value of the...
4843227 Focus detecting apparatus with both passive and active focus capability  
A focus adjusting system is provided with both a passive AF capability wherein ambient light is utilized and an active AF capability wherein an LED element for projecting light off the optical axis...
4842387 Automatic focusing apparatus for use in video camera and the like  
An automatic focusing apparatus for use in a video camera and the like wherein one optical element other than a focusing lens means of an optical system is moved for focusing in the in-focus...
4814889 Automatic focussing system  
A video camera output signal is digitized by an analog-to-digital converter (ADC) and the digitized video frame stored in memory. The stored frame is high-pass spatially filtered and the filtering...
4758082 Distance detection apparatus  
The invention relates to an active type AF apparatus. In an AF type apparatus for radiating light from a projecting means to an object, receiving light reflected by the object by first and second...
4636053 Distance detecting device  
A distance detecting device comprising radiation projecting means for projecting a radiation beam; radiation sensing means which is disposed away from the radiation projecting means with a given...
4634851 Control device for automatic focusing  
A control device for automatic focusing includes a low sharpness discriminating circuit for identifying a minimum contrast required for focus detecting function and a correlation zone...
4633073 Data correcting device in an automatic focus detecting system  
An automatic focus detecting device comprising a photoelectric converting device formed by arranging many elements, a pupil divider capable of forming two object images on the photoelectric...
4573784 Focus detecting apparatus  
This specification discloses a focus detecting apparatus having an optical system for forming a plurality of object images on the basis of object lights passed through different pupil areas of an...
4561747 Auto-focusing method  
An auto-focusing method includes a scanning step for scanning a pair of solid-state image sensors on which light from a subject of interest impinges as passing through a focusing lens, an A/D...
4447719 Automatic focus adjusting apparatus using weighted average means  
An automatic focus adjusting apparatus is provided with a light sensor producing a photoelectric output corresponding to the optical image of an imaged object, an operation device generating...
4411508 Annunciator for a focus adjusting device  
A focus adjusting device is a type of an autofocusing device having a servomechanism which drives the lens of a camera to bring it into focus. The focus adjusting device is provided with an...
4394077 Device for detecting sharp focusing  
Image focusing device especially adapted for use in single-lens reflex cameras. A light-beam emission or projection means is incorporated in each interchangeable photographic lens in such a way...
Matches 1 - 50 out of 72 1 2 >