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7605983 |
Viewing optical system, and imaging apparatus comprising the same
The invention relates to a viewing optical system for viewing an object image formed on a focusing screen, and an imaging apparatus comprising the same. An image erection optical system comprises a...
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7542670 |
Finder optical system for a single-lens reflex camera
An eyepiece includes, in order from the object side, a first lens with positive power, a second lens with positive power, and a third lens with negative power. The first lens is a positive meniscus...
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7483628 |
Optical viewfinder of a camera having a function of taking photographs
The present invention discloses an optical viewfinder of a camera having the function of taking photographs, and the viewfinder comprises an objective module, a base, an eyepiece module and an...
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7414669 |
Image capturing apparatus with a laser-framing viewfinder
An image capturing apparatus with a laser-framing viewfinder includes a housing, a laser source installed inside the housing for generating a laser beam, a first lens installed inside the housing...
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7236698 |
Imaging system
The invention relates to an imaging system equipped with an electronic viewfinder suitable for compactness and having a sufficient angle of viewing field and satisfactory optical performance,...
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7076161 |
Lens-fitted photo film unit and printing method
A lens-fitted photo film unit comprises a main body, a bottom lid, and a photo film. The main body has an exposure chamber with a taking lens. The exposure chamber is provided with a plane mirror...
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7020392 |
Finder housing
An objective that is a concave lens and an ocular that is a convex lens are arranged in a finder housing with a predetermined space between them. The finder housing is molded of a black plastic...
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6973266 |
Finder optical system
A finder optical system includes an eyepiece optical system with a positive refracting power. The eyepiece optical system includes an optical unit with a positive refracting power and a lens unit...
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6962447 |
Camera provided with eyepiece
A camera includes a screen on which an image of an object is projected, a plurality of reflection surfaces for erecting the image on the screen, and an eyepiece system with positive refracting...
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6930719 |
Lens unit structure for SLR digital camera
A lens unit structure for an SLR digital camera is provided with a photographing lens block and a finder block. The photographing lens block includes a lens barrel having a pair of guide shafts...
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6927907 |
Viewing device
A reference plate is situated on an optical axis of an eyepiece. The reference plate includes a first glass plate and a second glass plate. One surface of the first glass plate and one surface of...
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6903774 |
Viewfinder device including first and second prisms to reflect light from outside the viewing area
A thin viewfinder device includes, in order an object side to a viewing eye side, a first prism, and a second prism disposed separately from the first prim across an air gap. The first prism, the...
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6862411 |
Real image mode finder optical system
A real image mode finder optical system is constructed to be independent of a photographing optical system and includes, in order from the object side, an objective optical system with a positive...
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6856465 |
Optical viewfinder
A optical viewfinder has a single viewfinder element formed from a homogenous material such as glass or plastic. The viewfinder element has an object surface and an image surface. The object and...
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6847482 |
Image-erecting viewing optical system
An image-erecting viewing optical system includes a first prism having an incident surface and at least two reflection surfaces, a front lens group of an objective optical system, a second prism...
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6836619 |
Microlens array, optical apparatus, single lens reflex camera and optical finder
In the microlens array, a plurality of microlenses are formed with an irregularity or probability-distributed regularity so as to differ from a hypothetical base pattern, the hypothetical base...
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6724992 |
Finder and camera using such finder
A compact finder with excellent optical performance, and a camera including the finder are disclosed. The finder of the present invention includes an objective optical system, and an eyepiece...
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6724991 |
Binocularly viewable holographic viewfinder and camera
A camera has a body and a taking lens mounted to the body. The taking lens defines a subject field. A viewing window is joined to the body. The viewing window is transmissive of a light image of...
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6711356 |
Real-image variable-magnification viewfinder
A real-image variable-magnification viewfinder includes objective optical system having positive optical power, eyepiece optical system having positive optical power, and erecting optical system....
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6701082 |
Camera having diopter adjustment mechanism
A camera has a rangefinder device having an optical system constituted by a plurality of optical elements and a diopter adjustment mechanism capable of adjusting the observation diopter of the...
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6692163 |
Single-lens reflex camera provided with eyepiece
A single-lens reflex camera provided with an eyepiece includes a screen on which an image of an object is projected, a plurality of reflecting surfaces for erecting the image projected on the...
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6597872 |
Inverted Galilean finder and camera
An inverted Galilean finder is composed of an objective lens of a negative power and an eyepiece of a positive power, which are formed from a polystyrene resin by injection molding. The objective...
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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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6571068 |
View finder having an object lens system and an eye-piece lens system arranged on a common shaft
The invention relates to a view finder with improved structure for providing accurate posisioning and alignment of optical elements of its optical system. The view finder comprises an object lens...
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6556782 |
Camera having viewfinder box extending from cover to cover and assembly method
A camera has a capture unit and a body holding the capture unit. The body has a front cover, a rear cover, and an internal cavity disposed between the covers. The body has a viewfinder box...
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6515797 |
Viewfinder apparatus and optical apparatus having the same
A viewfinder apparatus includes an objective lens unit, an eyepiece unit, an image display element for displaying an image formed by an image pick-up element, an illuminating device for...
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6510010 |
Real image mode finder optical system and lens
A real image mode finder optical system includes an objective optical system with a positive refracting power, an image erecting optical system having a plurality of reflecting sections for...
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6480681 |
Adjustable viewfinder optical system for shoulder-supported cameras
An adjustable viewfinder optical system for a shoulder-supported movie or video camera having interchangeable objective lenses. The system includes first and second lens groups aligned on an...
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6442351 |
View finder
An inverse Galilean view finder has an object lens and an eyepiece lens. The front of the object lens is flat surface. First micro corner cube prisms are arranged in a frame of visual field around...
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6430375 |
Finder optical system
Disclosed is a finder optical system that is provided with a relay optical system that forms a second image by erecting an inverted first image formed on a first image plane through a taking leas...
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6314242 |
Single-lens reflex view finder
A single-lens reflex view finder wherein a partial amount of a light bundle transmitting through an imaging optical system which picks up an image of an object is split by optical path splitting...
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6263168 |
Eyepiece optical system for a single lens reflex camera
An eyepiece optical system, which is used in a single lens reflex camera having a penta mirror, includes a negative first single lens element, a positive second single lens element, and a negative...
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6236813 |
Real image type finder
A real image finder comprises an objective lens system including a convex lens and having a positive power as a whole, an erect image prism having four reflection surfaces and inverting an inverted...
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6208468 |
Image-forming optical system and apparatus using the same
A distortion-free and compact image-forming optical system with a minimal number of optical components which provides a wide image area and which is favorably corrected for ray aberrations and...
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6192194 |
Camera housing with window insert conforming to housing shape
A camera housing comprises an exterior longitudinal edge that is curved widthwise; a single opening through the exterior longitudinal edge that interrupts the exterior longitudinal edge to create a...
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6169859 |
Viewfinder
A diopter adjustment lens is provided with a follower pin on the edge thereof, and is arranged inside a cylinder provided with a guide groove engaging with the follower pin. A diopter adjustment...
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6154614 |
Camera optical system having nonphotographic lens formed integrally in photographic lens section
A camera optical system has a photographic optical system and a finder optical system. The photographic optical system has a photographic lens section that receives an optical image from a subject...
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6130714 |
Branch image pickup and view system
A branch image pickup and view system includes an objective lens system, an image pickup surface which is adapted to pick up an image formed by the objective lens system, an eyepiece lens system...
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6097891 |
One-time-use camera with viewfinder incapacitated when rear cover part removed to load fresh film in camera
A one-time-use camera comprising a main body part, a cover part that can be separated at least partially from the main body part, and a viewfinder having a pair of front and rear viewing lenses...
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6084720 |
Small-sized real image mode zoom finder
A real image mode zoom finder includes, in order from the object side, an objective optical system with positive refracting power having a first lens unit with negative refracting power, a second...
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6055376 |
Observation optical system and optical apparatus having the same
An observation optical system whose eye relief is below 25 mm includes an eyepiece lens having a water absorptive antifogging coating applied on one surface thereof, and a member holding the...
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6052541 |
Viewfinder optical system and photographing apparatus having the same
A viewfinder optical system includes, in order from an object side to an observation side, an objective optical system for forming a real image, a first optical member, the first optical member...
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6041193 |
Real-image zoom finder with rotationally asymmetric surface
A high-performance real-image finder with a zoom objective optical system wherein a power is given to a reflecting surface of an image-inverting optical system to reduce the size in the direction...
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6006038 |
Camera having apparatus for adjusting diopter of view finder and diopter adjusting mechanism for finder optical system of camera
A camera which includes a camera body, a rear cover, and a diopter adjusting mechanism having a diopter adjustment lens for a finder optical system, including: a diopter adjustment knob provided on...
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5982557 |
Ocular optical system for a viewfinder with variable visibility
An ocular optical system for a viewfinder in a camera for observing object image which is formed on focusing glass or its vicinity via eye point. The ocular optical system includes, in order from...
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5982556 |
Optical system and lens element for view finder
An optical system for a view finder reduced in the overall length without aggravation of the optical performance has a negative power object lens and a positive power eyepiece lens each of which...
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5963376 |
Variable-magnification image-forming optical system
A variable-magnification image-forming optical system having at least four lens units including a decentered optical system. The decentered optical system has at least one curved surface with a...
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5946505 |
Finder system for a single lens reflex camera
A finder system for a single lens reflex camera includes a focusing screen having a split prism, a penta roof mirror and an eyepiece lens system. The penta roof mirror has a hollow housing made of...
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5936775 |
Real-image type optical finder
In a real-image type optical finder, a positive first lens group (objective lens group), a positive second lens group (relay lens group and image erecting optical system), and a positive third lens...
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5920426 |
Telescopic viewfinder optical system
A variable length telescoping viewfinder for cameras that provides a variably adjustable eye viewing distance relative to the camera without changing the focus or magnification of the scene being...
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