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7474845 |
Lens barrel with a releasable engagement
The lens barrel of the present invention, in order to provide a lens barrel capable of reliably and easily preventing the breakage of the tooth of the revolving shaft of the driving motor and the...
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7454132 |
Linkage mechanism between zoom lens barrel unit and zoom member, camera, and method of assembling illumination range-changing device and zoom finder device
A linkage mechanism between a zoom strobe device and a zoom finder device, which contributes to reduced size of a camera, and can control the illumination range of the zoom strobe device and the...
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7430368 |
Zoom lens assembly capable of macro photography
A zoom lens assembly includes an optical system forming an optical axis and having at least one lens group, a base member ( 1 ), a macro ring member ( 2 ) rotatably engaged with the base member for...
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7356252 |
Auto-focusing zoom lens mechanism
An auto-focusing zoom lens mechanism includes a base unit forming a space; an auto-focusing (AF) lens unit located in the base unit and having a trajectory bar engaged therewith; a zoom lens unit...
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7345836 |
Zoom lens driving apparatus
A zoom lens driving apparatus achieves the object of driving multiple lens groups by a single motor and low production cost. When a first lens group, which includes a first lens, moves along guide...
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7265789 |
Camera with flange back adjusting mechanism
A camera includes a flange back adjusting mechanism in which the operation of the flange back adjusting mechanism is not obstructed, and the flange back adjustment is easily performed. A flange...
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6710936 |
Image sensor module with zooming function
An image sensor module with a zooming function is disclosed. The sensor module consists of first and second barrels for respectively holding condensing lenses used for image capture, and a housing...
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6650832 |
Variable power lens barrel and camera
The present invention discloses a variable power lens barrel including a first lens unit that is positioned nearest to the subject side, and a cam barrel having the first cam, wherein the first cam...
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6546200 |
Lens interlock mechanism and lens interlock method, camera and portable terminal having lens interlock mechanism
The lens interlock mechanism includes the first driving unit, the second driving unit, and the third driving unit. The first driving unit moves the zoom lens along the optical axis direction of the...
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6490097 |
Lens barrel
A lens barrel includes first and second cylinders, a base, a single motor, a feed screw, a rotation mechanism, a helicoid mechanism, and a drive gear for transmitting a drive force of the motor to...
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6487370 |
Lens drive control apparatus
A lens drive control apparatus includes a movable lens which is movable along the optical axis; a lens driver; a code plate having two limit positions respectively serving as mechanical movement...
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6480677 |
Zooming and focusing mechanism of camera
A single mechanism of a camera which performs zooming and focusing operations. The mechanism has a first lens group which performs focusing operation, a second lens group which moves relative to...
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6469841 |
Lens frame guiding mechanism of a zoom lens
A lens frame guiding mechanism of a zoom lens includes lens frames having projections which extend radially outwards, wherein a cam follower is formed on each projection; a linear guide barrel;...
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6389231 |
Lens driving apparatus, lens guiding mechanism, and optical instrument
A lens driving apparatus includes an intermediate barrel movable along an optical axis of an optical system; a movable barrel, containing a front group lens, movable along the optical axis to...
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6370334 |
Imaging apparatus, a drive mechanism and a method of driving the mechanism
A drive mechanism for moving a lens and adjusting a diaphragm by a driving force supplied by a single drive source, comprising: a transmission mechanism capable of taking a first transmitting...
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6353710 |
Lens barrel
A lens barrel includes a cam tube having a female helicoid and a cam formed in an inner wall thereof. A first tube which holds a lens and has a male helicoid formed on an outer wall thereof engages...
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6349003 |
Camera with manually operated zoom lens
A camera having a manually operated zoom lens system, in which the magnification of the lens system is adjusted by manual rotation of a part of the lens systems. The camera includes a lens system...
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6282377 |
Dual lens camera
A dual lens camera has a lens carrier with a shorter focal length lens and a longer focal length lens for alternatively positioning only one of the lenses at a picture-taking axis. A single...
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6061524 |
Camera
In a zooming-focusing type camera, a driving force of a motor is selectively transmitted to a zooming mechanism for controlling a focal length of an optical lens system, a film winding mechanism...
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6049432 |
Zoom lens barrel
A zoom lens barrel includes at least two lens groups, a linear movement guide tube for guiding a linear movement of the lens groups along the optical axis and a cam tube for reciprocating the lens...
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5983032 |
Lens drive device for zoom optical system
A lens drive device for a zoom optical system drives first and second lenses along an optical axis with a single drive source. A transmission mechanism connects the drive source and the first and...
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5983031 |
Lens shutter camera equipped with zoom lens system
The rotation of the motor 60 located outside the lens barrel is transmitted to the shutter blades 74 that move along the optical axis together with the lens barrel by means of the gear train 62,...
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5970260 |
Camera equipped with zoom lens
In a camera equipped with a zoom lens for forming an image of an object onto a film surface, the camera is equipped with a front lens group composed of a first lens group, adjustable aperture...
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5838374 |
Autofocus video camera that can compensate for variation in the amount of load on a mobile unit of a linear motor in a focus operation
A calculation circuit compares a current focus evaluation value provided from a focus evaluation value generation circuit, with a focus evaluation value, of one preceding field stored in a memory,...
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5832317 |
Zooming device
The zooming device comprises first and second lens groups movably supported by a guide shaft which is disposed in parallel to a cam shaft, an outer surface of which has first and second cam...
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5825559 |
Optical assembly having a dual purpose focus
An optical assembly includes a lens assembly having a lens barrel for supporting a lens along an optical axis, an optical base having an opening aligned with the optical axis, and a plurality of...
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5774282 |
Apparatus for adjusting lens position in focal length variable lens
A lens position adjusting apparatus for adjusting an axial position of a rearmost lens group of a plurality of lens groups provided in a focal length variable lens upon assembly of the focal length...
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5745803 |
Variable zoom lens hood
A pair of overlapping semi-cylindrical hood members are driven within a zoom lens barrel to slide in the direction of the optical axis, forming a substantially cylindrical lens hood, according to a...
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5732290 |
Magnification and focus adjustment control device
A magnification and focus adjustment control device, includes a first lens unit; a second lens unit; and a first and second guiding device for guiding a movement of the second lens unit. While an...
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5715482 |
Collapsible type zoom camera
A miniaturized collapsible zoom camera changes viewfinder magnification in accordance with a change in the photographic magnification. The camera is equipped with a collapsible cam tube to cause a...
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5701523 |
Lens barrel
A lens barrel for a zoom lens having front and rear lens groups has a rotary barrel which is rotatable about the optical axis and moves the front lens group in the direction of the optical axis in...
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5689739 |
Lens drive mechanism for photographic camera with zoom lens
A photographic camera is provided with a zoom lens having a front lens group which is moved back and forth in the direction of an optical axis held by a movable lens barrel and a rear lens group...
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5689738 |
Camera having back focus adjusting apparatus
A camera having an apparatus for adjusting a back focus by varying a distance between a rearmost point of lens groups of a photographing optical system and focal plane. The apparatus includes a...
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5579173 |
Focus adjusting apparatus of zoom lens
A focus adjusting apparatus in a zoom lens in which a position of a zooming optical system in a zoom lens barrel is varied in an optical axis direction in accordance with an axial position of a...
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5475457 |
Focal point adjusting device for zoom lens
A zoom lens having a plurality of movable lens groups, and an apparatus which is used to adjust the position of the rearmost lens group of the plurality of movable lens groups in the optical axis...
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5424793 |
Zoom lens camera viewfinder
A camera viewfinder optical system is interlockingly connected with a rotatable cam ring used to zoom a camera lens barrel system unit forwardly in an optical axial direction thus eliminating a...
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5410379 |
Camera using variable magnification photographic optical system unit
A camera using a variable magnification photographic optical unit, or an apparatus for such a camera, includes a follower portion for following a magnification varying operation of the variable...
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5151729 |
Zoom lens barrel
A zoom lens barrel comprises a plurality of lens groups; a fixed barrel having integrally and securely a mount portion for mounting the zoom lens barrel on the camera body; a zoom operation ring...
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4965615 |
Variable focus camera
A variable focus camera includes a photographing lens constituted by at least two components, and changes the position of a magnification adjusting lens of a finder by a cam barrel of the...
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4870436 |
Close-up photographing device
A close-up photographing device wherein, once a focused or a near focused condition is reached, it can be maintained irrespective of changing of the photographing magnification, and a photographing...
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4000501 |
Optical instrument with a zoom lens structure
A zoom lens structure for use with an optical instrument comprises a zooming optical system movable along the optical axis thereof and including a magnifying system and a correcting system; support...
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3914026 |
Short-distance correction device in a photographic lens
A photographic lens of the type which is capable of short-distance photography by the utilization of an intermediate ring includes a short-distance correction lens which forms a part of the...
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