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7400827 |
Camera provided with optical finder
According to the present invention, light from a taking lens is reflected by a quick return mirror in a lateral direction of a body unit. Then, after passing through a screen, the light is...
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7120461 |
Camera phone and photographing method for a camera phone
A camera phone and photographing method for a camera phone is provided which allows a camera phone to easily and precisely set a composition of a subject to be photographed. If a standard, preset...
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6975810 |
Focal point detection device and camera
A camera comprises a spatial modulation optical filter that is disposed in a viewfinder optical system for subject observation at or near a position optically equivalent to an estimated image...
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6591065 |
Single-lens reflex camera having a focusing detection sensor capable of calibrating, and a viewfinder
A focusing detection sensor is positioned in a viewfinder in a single-lens reflex camera but is nevertheless able to determine a focal point on an image of an object with enhanced accuracy. For...
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6587644 |
Finder unit
A finder unit includes an objective optical system for forming a viewing image, an inverting optical system for making the viewing image formed by the objective optical system an erecting normal...
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6249650 |
Single-lens reflex camera
A single-lens reflex camera comprises a quick return mirror which can be positioned at an object observing position (or an inclined position) and a photographing position (or a horizontal...
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6233097 |
Secondary image formation type view finder including two half mirrors
A secondary image formation type view finder comprising an objective optical system, a first mirror for folding an optical axis, a relay lens system and a second mirror for folding the optical...
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6160581 |
Camera having adaptive object image display facility
A camera includes an exposure part arranged to cause a film loaded on the camera to be exposed to light, an image sensor arranged to convert an object image into an electrical signal, a signal...
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5970263 |
Photometering lens for SLR camera and adjusting of photometering device
In a photometering lens for an SLR camera in which object light transmitted through a finder screen and emitted from a reflecting optical member is received by a light measuring receiver, wherein...
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5740478 |
Camera having autofocus apparatus
A camera having an autofocus apparatus for multi-spot focus detection. Particularly, a camera is provided in such an arrangement that selection operation members for selecting an arbitrary area...
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5721979 |
Camera
A camera has a finder optical system and a range measuring optical system which are provided independent of a photographing optical system. The finder optical system includes an objective system...
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5717966 |
Camera capable of metering light transmitting through a viewfinder
Camera capable of indicating set photographic field by masking an area out of the photographic field nearby an image forming plane within a visual field of a viewfinder or lowering transmittance of...
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5715480 |
Remote control camera using optical signal
A camera body has at least one opening formed in a front position thereof for receiving optical information about a subject. A remote control light sensor is provided within the camera body to...
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5687408 |
Camera and method for displaying picture composition point guides
A camera and method are disclosed which provide a photographer with a picture composition guide that may be viewed through the viewfinder. Standard composition points corresponding to golden...
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5669022 |
Optical apparatus including a light modulation finder optical system
An optical apparatus includes a projection optical system for projecting an object image; a focal detection system for detecting a defocus state of the object image with respect to a photosensitive...
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5655161 |
Photometric device for a camera
The present invention provides a photometric device for a camera in which the relative positions of the photometric sensor and a secondary image formed on the sensor can be adjusted with high...
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5649243 |
Photometric device and method
A photometric device that makes improved accuracy of screen photometry possible is disclosed. The photometric device includes a screen component that transmits a luminous flux from a subject field,...
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5585885 |
Camera photometer
An optical low-pass filter is built with circular phase components consisting of randomly distributed convex and concave surfaces. The area of the phase components is structured to cover 1/2 the...
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5278607 |
Photometering device in single lens reflex camera
A photometering device in a single lens reflex camera having a photometering device mounting portion on a magnifier of a finder optical system, and a photometering element which is mounted to the...
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5006879 |
Electronic flash lighting device for camera
An electronic flash lighting device for a camera comprises a first light measuring device for measuring the brightness of a field to be photographed, prior to flash emission, and a second light...
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4974014 |
Photographic viewfinder assembly
A viewfinder assembly which comprises a viewfinding mirror module of one-piece construction including a pair of major roof mirrors laid at a predetermined acute angle (90°) relative to each other,...
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4958185 |
Photographing apparatus
In a photographing apparatus such as a single lens reflex camera, metering photoelectric conversion elements are provided in the optical path of an imaging optical system or a finder optical system...
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4941012 |
Finder optical system for cameras
A finder optical system for cameras comprises a Porro prism, a mirror assembly, or a compound assembly of a mirror and a prism which includes four reflecting surfaces for erecting an image formed...
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4870443 |
Photometric device
A photometric device of the kind obtaining information on the luminance of each of photometric areas defined by dividing a photographing field at least into a middle area and a peripheral area and...
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4739360 |
Light metering device for camera
A light metering device for single lens reflex camera having photoelectric transducer elements arranged in the optical path of a finder thereof. The photoelectric transducer elements are arranged...
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4682873 |
Photometric device for camera
A photometric device disposed in the optical path of a view finder of a camera includes a photometric element which includes a plurality of minute photo-electric conversion elements. Each of the...
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4615602 |
Apparatus for adjusting the position of a light sensing element in a camera
An apparatus for adjusting the position of a light sensing element in a single lens reflex camera which carries out a partial light measurement by forming an image on the surface of the light...
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4509848 |
Light measuring device for camera
At least one electro-optical light shielding member is disposed close to a reticle of a photographic camera arranged for forming an image of an object to be photographed. The light shielding member...
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4508439 |
Single lens reflex camera
Disclosed is a single lens reflex camera which compresses a view finder mirror having a portion for allowing light passage therethrough, a movable support member supporting the mirror having a...
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4496231 |
Mirror reflex camera with exposure meter
The exposure meter is used in mirror reflex cameras wherein an image of an object projected by a picture taking lens onto an image plane is observed by means of a pentaprism through an ocular. For...
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4494853 |
Photometric method for cameras
In cameras having an automatic exposure control of the through-the-lens photometric type, light exposure is determined by a photoreceptor responsive in turn to photometric sensitivity distribution....
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4445765 |
Camera incorporating photo-electro transducer
In a camera incorporating a photo-electro transducer therein, the photo-electro transducer is protected from adverse effects of electromagnetic wave noises with parts of the camera around the...
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4441798 |
Camera having a liquid crystal focusing screen
A camera which includes a liquid crystal focusing screen and an exposure control circuit that measures light reflected from the subject to be photographed after its passage through the liquid...
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4436398 |
Device for splitting part of light incident on an image forming optical system
A device for splitting an incident light on an image forming optical system by a relief type diffraction grating. The device is constructed of a transparent substrate and a transparent filling...
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4386835 |
Device for reducing counter-light incident on a single-lens reflex view finder
The device according to the present invention comprises a photosensitive element responsive to counter-light which enters into an optical view finder from its eyepiece, a detector responsive to the...
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4341448 |
Light receiving element assembly in a camera
In a light receiving element assembly in a camera, a light receiving element chip is provided in a first package and an IC chip for treating the output signal of the light receiving element is...
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4319815 |
Prism view finder for reflex cameras with built-in exposure meter
The subject of the invention is a prism viewfinder for reflex cameras with built-in exposure meter means. It is of the known kind in which the prism has a bevel face reflecting the received image...
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4319816 |
Prism viewfinder for reflex cameras with built-in light meter
An improved prism viewfinder wherein in the region of the beam-incidence surface of the prism there is provided a partially transmitting mirrored surface which partially reflects the light beam of...
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4309093 |
Camera having a diffusing plate with rotationally asymmetric light diffusion property
A photographic camera provided with a finder system having, at the focal plane of the imaging lens, a light diffusing plate having a rotationally asymmetric diffusion property or a rotationally...
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4215924 |
Method to control introduction of diffracted beam by means of diffraction element
According to the present invention in the image forming light path a direction-selective diffraction element is provided in such a manner that the image forming beam having entered into said...
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4178084 |
Device for measuring light incident on an image forming optical system
The present invention relates to a device for measuring light incident on an image-forming optical system, making use of a plural number of diffraction elements. The plural number of the...
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4172646 |
Device to control introduction of diffracted beam by means of diffraction element
According to the present invention in the image forming light path a direction-selective diffraction element is provided in such a manner that the image forming beam having entered into said...
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4146319 |
Single lens reflex camera with automatic exposure control circuit
A single lens reflex camera with an automatic exposure control circuit includes a photodetector and a light emitting indicator in the viewfinder optical system. The light emitting indicator is...
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4134652 |
Light measuring arrangement for a single lens reflex camera
In a finder optic system having the structure in which a tiltable mirror, in its reflecting position, reflects light entering through the camera objective upward onto a focusing screen where an...
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4128321 |
Pentagonal prism and related optical structures for single lens reflex cameras
A pentagonal prism holder for holding a pentagonal prism in horizontal and vertical directions is made of a transparent plastic material and at least a portion of the prism holder is formed as an...
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4109257 |
Reflex camera with a built-in exposure metering apparatus
In a reflex camera having a penta prism positioned in the view-finder thereof, there is provided a glass member having a reflactive index equal to or larger than that of the penta prism and...
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4104654 |
Photometric apparatus for single lens reflex camera
A photometric apparatus for single lens reflex camera and of the type in which an exposure value is determined by photometry of light which is transmitted through a photographic optical system and...
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4064516 |
Reflex camera light detecting arrangement
A light detecting system for a single lens reflex camera in which an image of the focusing screen is reflected to the normally unused surface of the pentaprism from a partially reflective surface...
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4035815 |
Display unit for luminous data of a single lens reflex camera
A display object illumination or unit for displaying luminous data is provided, wherein the data is retained in a memory circuit upon completion of the photometry operation in a single lens reflex...
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4021823 |
Photometric device built into viewfinder system for a single lens reflex camera
A through the lens (TTL) photometric function is provided by apparatus built into a viewfinder system for a single lens reflex (SLR) camera. As to the viewfinder function, an optical path is...
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