Abstract: A liquid crystal display device includes: a liquid crystal panel which has a liquid crystal device containing liquid crystal operating in twist nematic mode and a micro-lens array disposed adjacent to the liquid crystal device; a first optical compensating plate disposed on the incident side of the liquid crystal panel to optically compensate the liquid crystal device; and a second optical compensating plate disposed on the exit side of the liquid crystal panel to optically compensate the liquid crystal device. A first retardation of the first optical compensating plate in system optical axis direction is larger than a second retardation of the second optical compensating plate in the system optical axis direction.

Abstract: A padded protective cup shaped covering sized to slip over a camera lens is disclosed. The covering is designed to fit on either the front portion of the lens or the lens mount. The protective covering has beveled side walls which allow it to fit easily on a variety of different lenses. The protective covering is made from two separate layers of material, an outer cup made from a firm yet flexible material, and the inner liner made from a soft pliable material. The soft inner liner allows the covering to easily adhere to the camera lens, and also provides impact protection. The outer cup provides additional impact protection. The outer cup also includes a domed top portion which provides a crumple zone or impact bumper. In one embodiment the outer cup has a clear optical grade lens or filer lens inserted or incorporated therein, which allows the camera user to take a photograph without removing the protective lens.

Abstract: Disclosed is a hood-cover combination for a lens of a camera. The hood-cover combination includes a hood for detachable attachment to a portion of the camera around the lens, a frame rotationally located in the hood, two covers pivotally connected to the frame and two springs for biasing the covers from the frame so that the frame is kept open.

Abstract: A sliding cover structure and an electronic apparatus are disclosed. The sliding cover structure is used for covering a lens, and includes a base, a first cover, a second cover and a swing part. The first cover slides forwards and backwards on the base, and slides between an opening position that does not cover the lens and a closing position that covers the lens. The second cover moves upwards and downwards on the base. The swing part is pivoted with the base and has a first contact end and a second contact end. The pivoting position of the swing part and the base is located between the first contact end and the second contact end so that the swing part can perform a seesaw operation. The first contact end is located below the second cover so that the first contact end drives the second cover to move upwards.

Abstract: A protective cover module includes a housing, a first positioning element, a second positioning element, and a plate. The housing defines a receiving hole. The second positioning element attaches to the housing and attracts the first positioning element positioning element by magnetic force. The plate slidably attaches to the housing, and configured to mount the first positioning element and cover the receiving hole.

Abstract: There is provided a pellicle which comprises a pellicle frame having eight or more jig holes in the outer wall for receiving jig pins of pellicle handling jigs; the jig holes are arranged such that the pellicle frame can be held by two or more pellicle handling jigs at the same time, and preferably the jigs holes are on the outer walls of the all frame bars so that the pellicle frame can be held by the jigs at both the longer frame bars and the shorter frame bars at the same time.

Abstract: In order to attach a lens hood to a lens body while positioning the lens hood, fixing convex portions are provided on the lens hood and fixing uneven portions are provided on the lens body. On the fixing uneven portion of the lens body, a positioning slope coming into contact with the fixing convex portion of the lens hood upon attachment is provided on a position where a convex portion and a recessed portion are continuously formed on the lens body. Thus it is possible to facilitate attaching and detaching with a simple configuration while obtaining placement accuracy in the circumferential direction of a lens and in a thrust direction.

Abstract: A cover for a side view mirror of a car having a shell attached to the car where the shell has a closed side facing the front of the car, an open end facing the rear of the car and a movable mirror located in the open end of the shell. The cover, which may be a blend of material, covers the closed side of the shell and may have a display printed thereon visible from the front of the car. An elastic draw string is located in a channel of the cover or Velcro strips are located on the inside surface of the cover. The cover is attached to the side view mirror by placing the ends of the channel around the side view mirror and fastening the ends of the elastic draw string together after pulling them tight or engaging Velcro strips located on the shell.

Abstract: A lens barrier unit that can further reduce the retraction space of lens barriers is provided. The lens barrier unit includes a barrier case having an opening; and multiple spherical barriers provided so as to pivot about a pivotal axis. The barriers can be shifted between a first state for closing the opening and a second state for opening the opening. In the second state, the barriers are all stored in the lower part of the barrier case.

Abstract: The protective cover is for a telescopic device in which the cover can be stretched to fit over the device and then released to fit snugly around the device. The protective cover acts as an insulator to protect against temperature extremes, a barrier to protect against moisture, and a shock absorber to protect against external vibrations and impacts. Tabs facilitate the installation and removal of the protective cover.

Abstract: A protective cover for the front and rear lenses of a barrel of an optical instrument such as a set of binoculars. The cover includes a removable shield for each of the lenses, wherein each shield is attached to a support which is removably attached to a barrel of the binoculars. The cover is constructed of flexible materials having elastic properties.

Abstract: A barrier unit, of which the cap edge is not easily deformed even under some external force, is provided. The barrier unit includes: a base, which defines a first window; a cap, which defines a second window and which is arranged so that the second window faces the first window; and at least one blade, which is arranged between the base and the cap so as to open or close with respect to the first and second windows. A surface of the cap that is opposed to the at least one blade has a notched portion around the second window.

Abstract: The present invention provides a barrier unit, of which the blades can be opened fully. The barrier unit is designed to be attached to a camera in order to protect the lens of the camera and is ready to open or close as needed. The barrier unit includes: a base with a cylindrical portion; a first ring, which is arranged so as to rotate around the cylindrical portion; and first and second blades, which are interlocked with the first ring and which are gradually opened and closed as the first ring rotates. When one of the first and second blades is fully opened, the first ring is further movable to turn the other blade in a closing direction.

Abstract: An imaging apparatus includes a lens unit including a lens and an image sensor, a lens unit supporting unit for supporting the lens unit, a base unit for supporting the lens unit supporting unit in a manner that can tilt, a fixing base unit for supporting the base unit, a dome cover mounted to the fixing base unit, and an elastic member for elastically supporting the lens unit so that the lens unit can perform a retreat operation in an opposite direction from an object and along an optical axis direction of the lens unit when a force is applied thereto from the dome cover and even if the lens unit supporting unit leans in a tilt direction.

Abstract: A imaging apparatus includes: a display module; a dust-proof plate arranged on an observer side of the display module and configured to substantially seal a surface of the display module; an eyepiece lens arranged on the observer side of the dust-proof plate and movable in an optical axis direction; and a cover member retaining the dust-proof plate and the eyepiece lens, wherein the cover member has an opening for removing foreign matter adhering to the surface of the dust-proof plate opposed to the eyepiece lens and to the surface of the eyepiece lens opposed to the dust-proof plate.

Abstract: A selectively positionable lens cover is disclosed having a lens housing volume and an arcuate lip portion for the selective engagement to and disengagement from a lens. The lens cover has a first engagement structure whereby the first engagement structure may be releaseably engaged with and removed from a second engagement structure. The lens cover has an aperture having a first longitudinal axis whereby the first engagement structure may be selectively engaged with and removed from the second engagement structure in a first position that is substantially aligned with a user-defined second longitudinal axis.

Abstract: A padded protective cup shaped covering sized to slip over a camera lens is disclosed. The covering is designed to fit on either the front portion of the lens or the lens mount. The protective covering has beveled side walls which allow it to fit easily on a variety of different lenses. The protective covering is made from two separate layers of material, an outer cup made from a firm yet flexible material, and the inner liner made from a soft pliable material. The soft inner liner allows the covering to easily adhere to the camera lens, and also provides impact protection. The outer cup provides additional impact protection. The outer cup also includes a domed top portion which provides a crumple zone or impact bumper. In one embodiment the outer cup has a clear optical grade lens or filer lens inserted or incorporated therein, which allows the camera user to take a photograph without removing the protective lens.

Abstract: The baffle plate for a lens of a movie or TV camera has an add-on tube that can be slipped onto the camera lens with little clearance. The add-on tube is provided with a swivel arm, which has a swivelling axis which is fixed with respect to the camera lens and which is located in parallel to the rear plane of the add-on tube and in or behind this plane and is positioned such that the distance to the opposite rear inner edge of the add-on tube which is slipped onto the camera lens is approximately equal to or larger than the distance to the front outer edge of the camera lens. The clearance between the add-on tube and the camera lens is from 0.5 mm to 1 mm.

Abstract: A surgical drape with a functional interface for engaging surgical instruments, including a flexible, tube-like sleeve for creating a sterile barrier around a non-sterile holding arm. The drape is open at a proximal end, and has a hub at a distal end for connection to a distal end of the holding arm. The hub has sterile external surfaces that allow surgical instruments to be easily removably attached in a variety of directions and orientations, providing sufficient mechanical strength to transmit forces from the instruments to the holding arm. The hub includes an externally accessible, sterile actuator for actuating an electronic circuit local to the holding arm on the non-sterile side of the barrier.

Abstract: An image pickup apparatus having a construction which enhances the degree of freedom in layout and enables size reduction. The image pickup apparatus includes a lens barrel, and an upper barrier group and a lower barrier group that open and close a front face of the lens barrel. The upper and lower barriers are rotated about respective upper and lower barrier rotary shafts disposed on a plane perpendicular to an optical axis of the lens barrel. A first spur gear and a second spur gear connected thereto are provided on a side of the lens barrel. A member transmits the rotation of the first spur gear driven by a motor to the lower barrier group, and another member transmits the rotation of the second spur gear to the upper barrier group.

Abstract: A barrier device that is capable of being configured simply and thinly without enlarging an external diameter of an image pickup lens barrel even if an aperture in front of an image pickup lens is large. A pair of principal blade members that can open and close are arranged facing to the aperture. A plurality of pairs of auxiliary blade members are driven to open and close interlocked with open-close operations of the principal blade members. A pair of barrier driving springs are disposed between a barrier driving member that rotates around an optical axis of an image pickup optical system and the principal blade members, and to force to pull them each other in a direction to close the principal blade members. The open-close operations of the principal blade members are performed using spring forces of the barrier driving springs as the barrier driving member rotates.

Abstract: A cover unit includes a first cover that is movable between a cover position and an exposed position. A second cover slidably is movable in a direction perpendicular to its visible surface. A cover moving mechanism moves the second cover, wherein, when the first cover is at the cover position, the second cover is at such a height that the visible surface of the second cover is substantially coplanar with a visible surface of the first cover. When the first cover is moved from the cover position to the exposed position, the second cover is moved to such a height such that the visible surface of the second cover is moved by at least an amount that corresponds with the thickness of the first cover. When the first cover is at the exposed position, the first cover is above the visible surface of the second cover.

Abstract: An electronic device includes a main body, a lens received in the main body, and a collapsible lens cover with one end fixed on the main body and the other end capable of resisting or detaching from the main body such that the lens is covered or uncovered.

Abstract: An apparatus including a cap adapted for covering, protecting and cleaning a lens of a device such as a scope of a firearm. The cap may be manipulated to clean the lens, such that when the cap is opened, the lens is clean, with the scope ready for use.

Abstract: A unique, new and useful structure designed to simply and efficiently cover and protect the lens of a sight, especially a firearm sight such as the hooded models of the EO Tech Holosight type 511, 512, 551, and 552 models. A lens cover comprises a housing with a pair of lens openings, and a pair of lens covers, one for each lens opening. The housing has a recess for receiving the lens covers, and each lens cover is biased toward the recess and is moveable against its bias to a position in which it covers a respective lens opening in the housing. In a preferred embodiment, the recess and the lens covers are configured such that (i) the lens covers can be received and oriented in the recess in a predetermined relation with each other and (ii) the lens covers can be efficiently manipulated when they are not received in the recess in the predetermined relation to cause them to be reoriented and received in the recess in the predetermined relation.

Abstract: Medical lens assemblies and sterile drapes with a lens assembly are presented herein. In one embodiment, a lens assembly includes an annular lens housing that is attachable to a medical drape. The lens housing is configured to releasably attach to a medical device, such as a surgical microscope. An annular lens cover holder is removably attachable to the lens housing. A lens cover for shielding the objective lens is pivotably hinged to the lens cover holder. In another embodiment, a drape assembly includes a flexible body sized to cover an optical device. A lens housing attached to the drape body is engageable with the optical device to attach proximate to an objective lens thereof. A lens cover holder is removably attached to the lens housing to rotate about a first axis. A lens cover is mounted to the lens cover holder to pivot about a second, different axis.

Abstract: A lens barrier device includes a first barrier blade including a shielding portion, a connection portion, and an abutment portion. The abutment portion is connected, on an optical axis imaging surface side of the shielding portion, to the shielding portion via the connecting portion. Further, a second barrier blade is provided on an optical axis imaging surface side with respect to the shielding portion. A regulating portion is provided whose optical axis imaging surface side is configured to contact the abutment portion, wherein an outer peripheral portion of the second barrier blade, the connecting portion, and the abutment portion are located in this order from an optical axis center to an optical axis outer side.

Abstract: In a lens barrier device, one barrier blade is arranged at a different height in the optical axis direction from another barrier blade, and a barrier base is provided with a regulating portion which is at the outer peripheral portion of an optical axis forward end side barrier blade and which regulates the position in the optical direction of the optical axis forward end side barrier blade, thus forming the lens barrier device as a unit. If rotation shafts for the barrier blades are formed on an external cover, deformation or the like would be generated when the external cover is assembled to the apparatus, resulting in an increase in the requisite drive force for the opening/closing operation. Hence, it is possible to prevent a suitable opening/closing operation from being hindered by such an increase in the requisite drive force.

Abstract: A lens cover assembly comprises a lens cover and a water absorption portion. The lens cover has a transparent portion located in a center portion thereof. The water absorption portion is mounted to the lens cover surrounding the transparent portion.

Abstract: An optical assembly and/or a photographing apparatus including a lens mounting member on which at least one lens is mounted; a transfer portion for moving the lens mounting member; a guide member for guiding a movement of the lens mounting member; a base member on which the transfer portion and the guide member are arranged; and a lens cap apparatus having at least one barrier for opening and closing an optical path passing through the at least one lens, wherein the lens cap apparatus is configured to open and close the barrier by contact with the guide member when the lens cap apparatus is moved closer to or farther from the base member.

Abstract: An exemplary projector includes a main body, a lens at a front of the main body and a lens barrier module positioned at the front of the main body for covering the lens when the projector is not in use or exposing the lens when the projector is in use. The lens barrier module includes a front bezel defining an opening aligned with the lens, a lens frame secured to a rear side of the front bezel and separated from the front bezel, and a lens cover slidably received between the front bezel and the lens frame. The lens frame defines an aperture aligned with the opening. The lens cover is positioned in a manner to selectively cover or uncover the lens.

Abstract: A digital microscope for viewing the surface of an object comprises a housing having a proximal end and a distal end. The distal end forms an opening to the housing. A sensor that receives light reflected from the surface of an object is located towards the proximal end of the housing. The sensor converts the light to a digital image. A lens that focuses light reflected from the object onto the sensor is located within the housing between the sensor and the object to be viewed. A reflective member is located within the opening. In use, light is reflected from the object to the sensor and a portion of the reflected light is directed via the reflective member such that the surface of the object can be viewed simultaneously from two different directions.

Abstract: A lens cover covers a camera lens or a projection lens formed in the frame of a computer display or in the body of a personal digital assistant or mobile telephone. The cover is movable to allow the lens to operate, yet allow the cover to remain with the device. One cover pivots around a pivot point to cover or uncover the lens. Another cover hinges in order to cover or uncover the lens. Another cover slides back and forth. Another cover hangs upon a hook located above the lens. Another cover is a suction cup applied over the lens. Another cover slides back and forth hanging on the top edge of the computer display. The cover may be fixed in place using gravity, friction, a snap, hook and loop closures, suction, or a ZIPLOC-type mechanism. The cover or its attaching means may be fixed to the computer or telephone using a self adhesive.

Abstract: The present invention is directed to removable and collapsible moisture blocking screens that inhibit moisture from condensing on a surface when steam is present. The screens include a shaped vinyl film adapted to releasably contact a surface, a fabric component secured around a periphery of the film, and a flexible perimeter of fixed length having two attached ends, which perimeter is encased at least substantially within the fabric and is disposed around at least a substantial portion of the periphery of the film. Methods of inhibiting steam from accumulating on a surface are also described.

Abstract: A protective cover module includes a housing, a first positioning element, a second positioning element, and a plate. The housing defines a receiving hole. The second positioning element attaches to the housing and attracts the first positioning element positioning element by magnetic force. The plate slidably attaches to the housing, and configured to mount the first positioning element and cover the receiving hole.

Abstract: A lens barrier apparatus which includes a barrier base; an interlocking ring configured to rotate with respect to the barrier base; a pair of driving vanes, each of which is configured to be rotatably mounted to the barrier base, and each of which is configured to be rotatably moved from an open position to a closed position by movement of the interlocking ring; and a pair of reacting vanes each of which is rotatably mounted to the barrier base, and each of which is configured to rotate from the closed position to the open position by movement of a respective driving vane of the pair of driving vanes.

Abstract: A sliding cover structure and an electronic apparatus are disclosed. The sliding cover structure is used for covering a lens, and includes a base, a first cover, a second cover and a swing part. The first cover slides forwards and backwards on the base, and slides between an opening position that does not cover the lens and a closing position that covers the lens. The second cover moves upwards and downwards on the base. The swing part is pivoted with the base and has a first contact end and a second contact end. The pivoting position of the swing part and the base is located between the first contact end and the second contact end so that the swing part can perform a seesaw operation. The first contact end is located below the second cover so that the first contact end drives the second cover to move upwards.

Abstract: A selectively positionable lens cover is disclosed comprising a lens housing volume and comprising an arcuate lip portion for the selective engagement to and disengagement from a lens. The lens cover further comprises a first engagement structure whereby the first engagement structure may be releaseably engaged with and removed from a second engagement structure. In a preferred embodiment, the lens cover further comprises an aperture having a first longitudinal axis whereby the first engagement structure may be selectively engaged with and removed from the second engagement structure in a first position that is substantially aligned with a user-defined second longitudinal axis.

Abstract: A collector assembly with a radiation collector, a cover plate and a support member connecting the radiation collector to the cover plate are provided. The cover plate is designed to cover an opening in a collector chamber. The collector chamber opening may be large enough to pass the radiation collector and the support member. The removed radiation collector can be cleaned with different cleaning procedures, which may be performed in a cleaning device. Such cleaning device may for example consist of the following: a circumferential hull designed to provide an enclosure volume for circumferentially enclosing at least the radiation collector; an inlet configured to provide at least one of a cleaning gas and a cleaning liquid to the enclosure volume to clean at least said radiation collector; and an outlet configured to remove said at least one of said cleaning gas and said cleaning liquid from the enclosure volume.

Abstract: A mobile communication terminal according to an exemplary embodiment, includes a terminal body having a camera lens hole, a lens cover member mounted at the terminal body and configured to open and close the camera lens hole, and a rotation member mounted at the terminal body and interlocking with the lens cover member such that lens cover member opens and closes when the rotation member is rotated.

Abstract: In a portable terminal having a photographic function for receiving photographic light from a camera subject and obtaining image data, the portable terminal comprises an optical member receiving photographic light from the camera subject, and a cover member mounted on a slidable basis. The cover member selectively opens and shuts to cover said optical member in accordance with a sliding operation. The cover member has a mirror on a surface of the cover member.

Abstract: A lens cap set for covering an opening defined by a peripheral edge of a lens assembly includes a mounting seat adapted to be disposed on the peripheral edge of the lens assembly, and a lens cap. At least a portion of one of the mounting seat and the lens cap is made from a magnetically attractable material, and at least a portion of the other one of the mounting seat and the lens cap is made from a magnetic material. The lens cap is coupled magnetically and removably to the mounting seat for covering the opening defined by the peripheral edge of the lens assembly.

Abstract: A barrier device that is capable of being configured simply and thinly without enlarging an external diameter of an image pickup lens barrel even if an aperture in front of an image pickup lens is large. A pair of principal blade members that can open and close are arranged facing to the aperture. A plurality of pairs of auxiliary blade members are driven to open and close interlocked with open-close operations of the principal blade members. A pair of barrier driving springs are disposed between a barrier driving member that rotates around an optical axis of an image pickup optical system and the principal blade members, and to force to pull them each other in a direction to close the principal blade members. The open-close operations of the principal blade members are performed using spring forces of the barrier driving springs as the barrier driving member rotates.

Abstract: A lens barrier device includes: a plurality of barrier blades disposed in an oscillatible manner in front of an imaging lens positioned in closest proximity to a subject side in an imaging optical system; and an oscillating mechanism that allows the plurality of barrier blades to oscillate so as to form a fully closed state in which an optical path of the imaging optical system is fully closed and a fully opened state in which the optical path is fully opened by the barrier blades. The oscillating mechanism includes a drive ring that is provided in an inversely rotatable manner within a predetermined angular range about an optical axis of the imaging optical system and allows the plurality of barrier blades to oscillate back and forth to form the fully closed state and the fully opened state by rotating forward and backward.

Abstract: An image pickup apparatus having a construction which enhances the degree of freedom in layout and enables size reduction. The image pickup apparatus includes a lens barrel and a barrier section for opening/closing the front face of the lens barrel. A barrier rotary shaft is disposed on a plane perpendicular to the optical axis of the lens barrel. The barrier section comprises two barrier groups, and each of the barrier groups comprises a central barrier configured to be driven for rotation about the barrier rotary shaft, and an outer barrier configured to rotate about the barrier rotary shaft in a direction identical to a direction of rotation of the central barrier in accordance with the rotation of the central barrier in a state superposed on the central barrier.

Abstract: An image pickup apparatus having a construction which enhances the degree of freedom in layout and enables size reduction. The image pickup apparatus includes a lens barrel, and an upper barrier group and a lower barrier group that open and close a front face of the lens barrel. The upper and lower barriers are rotated about respective upper and lower barrier rotary shafts disposed on a plane perpendicular to an optical axis of the lens barrel. A first spur gear and a second spur gear connected thereto are provided on a side of the lens barrel. A member transmits the rotation of the first spur gear driven by a motor to the lower barrier group, and another member transmits the rotation of the second spur gear to the upper barrier group.

Abstract: The invention comprises of a means and a method to keep clean a plurality of transparent surfaces, through which a plurality of images are captured by an optical element, which may be an optical sensor or a camera, where there is flying debris or liquids or liquids that can potentially stick to a plurality of said transparent surfaces and clog the view of said optical element. A plurality of channels transfer and direct fluid such as compressed air from an outside source to blow over and keep a plurality of said transparent surfaces free of debris or liquids.

Abstract: A thermal insulation system is provided for a component of a bonding system, such as an optical system. The thermal insulation system comprises multiple insulation layers located between the component and a heat source. The multiple insulation layers comprise at least one layer of moving air injected into the layer and a cover layer enclosing the layer of moving air. The multiple insulation layers may further comprise a layer of static air.

Abstract: A lens cover device for a camera lens, particularly suited for use with a telephoto lens and hood assembly, comprises a disk-like body member having a plurality of retention members. The retention members provide friction within the filter-thread region of the camera lens. A large handle attached to one face of the cover device enables a photographer to easily cover or uncover the lens whether the lens and hood are in the shooting position or the stored position.

Abstract: A projector includes a lens cover which is slidable relative to a chassis for covering and exposing a projection aperture of a projection lens. A detecting section includes a light emitting portion which projects a light beam and detects the opened state or closed state of the lens cover depending on the absence or presence of the light beam received by a light receiving portion. The light emitting portion and light receiving portion are disposed so that the optical path of the light beam projected from the light emitting portion and received by the light receiving portion intersects the slide direction of the lens cover. A light shielding portion is provided in the lens cover. The light shielding portion is formed in a predetermined width in the slide direction of the lens cover.