Abstract: An image-capturing lens includes a plastic lens formed with use of a material in which particles each having the maximum length of 30 nanometer or less are dispersed in a plastic material.

Abstract: To provide a lens device involving simple adjustment work and an adjustment method for the same, the lens device includes the first and second lens groups, each including having a retaining guide section on a surface facing another of the first and second lens groups, wherein the retaining guide section of one of the first and second lens groups retains and guides the other of the first and second lens groups so that the other of the first and second lens groups can rotate around the optical axis in the rotary cylinder.

Abstract: An optical arrangement with telecentric beam region for imaging objects, preferably a microscope, comprises in a main beam path at least one infinity-imaging objective and at least one eyepiece with an eyepiece intermediate image plane and a tube lens of suitable focal length which is arranged between the latter at a fixed distance from the objective. At least one optical element in the form of a beam splitter module or beam splitters for laterally splitting off at least a first partial beam path is provided in the space between the objective and the tube lens in which the telecentric beam path is located. A tube lens is located at a suitable distance from the objective in each of these first partial beam paths. At least a second partial beam path is branched off from at least one of these first partial beam paths and a tube lens is located at a suitable distance from the objective in each of these second partial beam paths.

Abstract: Using a solid immersion lens (SIL) having a spherical lens surface with a radius of curvature RL from a material having a refractive index nL, an image of a sample is observed. A geometric aberration characteristic caused by the SIL is evaluated by using a predetermined optical system. Using a coefficient k (0<K<1) set to satisfy a condition where the average image surface becomes flat or a condition yielding a favorable chromatic aberration characteristic, the sample is observed with the solid immersion lens while a surface, orthogonal to the optical axis, including a point located downstream of the spherical center C of the lens surface 10 by k×(RL/nL) along the optical axis is employed as a sample observation surface 20. This realizes a sample observation method that can observe the image of the sample favorably with a solid immersion lens, and the solid immersion lens.

Abstract: Beam splitter designs for interferometers provide a phase difference between the two resulting interference beams that are independent of the polarization status of the incident beam. The polarization independent phase coating is achieved by making the internal beam splitting coating of an unpolarized beam splitter to be symmetrical. A symmetrical coating will produce the phase matching condition, ?SR??SR?=?PR??PR?=0.

Abstract: A conformal retro-modulator optical apparatus. The apparatus includes an array of multiple quantum well devices disposed in a thin array. A plastic support element is bonded to the thin array, the plastic support element having a thickness greater that of the thin array. The plastic support element is preferably plastic at elevated temperatures above room temperature, thereby allowing the plastic support element and the thin array of multiple well device disposed therein to conform to a predetermined shape, yet being rigid at room temperature.

Abstract: A zoom lens system including, from the object side to the image side, a first lens unit and a second lens unit, where when zooming, the distance between the first lens unit and the second lens unit changes. In at least one exemplary embodiment, the first lens unit includes a first lens element having negative optical power, and a second lens element having positive optical power.

Abstract: Observable changes in electrical and optical characteristics of individual molecules adsorbed on a conductor or semi-conductor caused by electrical and/or optical excitation or de-excitation of electrons within such molecules can be used as signals which in turn can be used to carry information and such observable information carrying changes or signals can be switched, amplified, and modulated by varying optical as well as electrical inputs to such molecules. Molecular structural design alters functional behavior of the molecular/quantum devices. In an example, monomeric metallated phthalocyanine behaves as a fast (<10?12 second), energy efficient (3OkT/bit of information), fully reversible quantum switch with multiple outputs. However, if monomeric phthalocyanines are organized in structural combinations such as one dimensional wire-like ring-stacked, or two dimensional sheet-like ring-fused phthalocyanines, their electro-optical properties are significantly altered.

Abstract: An eyepiece lens includes first lens group G1 having a negative refracting power including a negative meniscus lens with a concave surface facing eyepoint E.P side, second lens group G2 having a positive refracting power including a lens with both convex surfaces on both ends, and third lens group G3 having a negative refracting power including a negative lens. The first–third lens groups are arranged in an order from eyepoint E.P side, and the eyepiece lens is capable of varying a diopter by moving the second lens group along an optical axis. The eyepiece lens is configured by aspherical surfaces to make the positive refracting power weak while at least one surface of the convex surfaces of the lens deviates from the optical axis. Further, conditions of a following formula are satisfied: 1.6<f1/f3<2.5 ?0.

Abstract: An object is to provide a zoom lens system with a high zoom ratio capable of preferably correcting aberrations with securing sufficient amount of back focal length by well-suited power arrangement. The zoom lens system includes, in order from an object, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power. When zooming from a wide-angle end state to a telephoto end state, a distance between the first and the second lens groups increases, a distance between the second and the third lens groups decreases, a distance between the third and the fourth lens groups increases and a distance between the fourth and the fifth lens groups decreases. A given conditional expression is satisfied.

Abstract: Optical system designs for projectors using flat light sources are disclosed. These projectors make use of imagers that manipulate the transmission or reflectance of light through electronically controlled pixels. The optical systems of the invention employ a rectangular flat light source that is matched to the aspect ratio of the imager itself, thus enabling very efficient use of light. Several flat light sources are possible for this projection system, including flat fluorescent lights and field emission light sources. Collimation of these light sources is an option. Polarization conversion means is also disclosed for such flat light sources, so that the light output is almost totally linearly polarized. Such projection systems can be very compact.

Abstract: Provided is a zoom lens barrel including a plurality of lens groups, each having at least one lens arranged in an optical axis direction, an actuating mechanism capable of moving the lens groups in an optical axis direction, and a shutter unit including an opening portion for exposure, a blade capable of adjusting the degree of opening of the opening portion, and an electronic actuating apparatus capable of actuating the blade to adjust the degree of opening of the opening portion according to the distance between the shutter unit and one of the lens groups adjacent to the shutter unit when the distance is shorter than a predetermined distance.

Abstract: A zoom lens includes, a first lens unit (1) having a positive refractive power and is fixed with respect to an image plane; a second lens unit (2) having a negative refractive power and causing a variable power action when moved along an optical axis; an aperture stop (6) fixed with respect to the image plane; a third lens unit (3) having a positive refractive power and fixed with respect to the optical axis direction when zooming and when focusing; a fourth lens unit (4) having a negative refractive power and fixed with respect to the image plane; and a fifth lens unit (5) having a positive refractive power and moveable along the optical axis such that the image plane, which is displaced by a movement of the second lens unit along the optical axis and by a movement of the object, is maintained at a constant position from a reference plane. The entire third lens unit is moveable in a direction perpendicular to the optical axis. A condition, 0.035<|?w·?t/Z|<0.

Abstract: A zoom optical system provided, in order from a reduction side toward a magnification side, with: a first lens unit having positive optical power; a second lens unit having positive optical power; a third lens unit having positive optical power; and a fourth lens unit having negative optical power; wherein the interval between adjacent ones of the first, second, third and fourth lens units is varied during zooming, and in an entire zooming range, a magnification side conjugate position relative to a reduction side conjugate position, and the position of the pupil of the zoom optical system relative to the reduction side conjugate position are substantially immovable.

Abstract: Lens structures are disclosed. The lens structures include a first lens spaced apart from a second lens and a spacer disposed therebetween comprising an extruded adhesive. Goggles utilizing the lens structures are disclosed. Methods of forming lens structures and goggles are also disclosed. The methods of forming the lens structures include providing a first lens, selectively applying adhesive to a surface of the first lens, contacting the adhesive applied to the first lens with a second lens to form a lens structure, and at least partially curing the adhesive. Lens structures so formed may be attached to a goggle frame. Programmable machines for implementing such inventive methods are also disclosed.

Abstract: When the adjusting shaft is rotated, the rotation of the adjusting shaft is transmitted to the rotationally movable barrel. The rotationally movable barrel rotates so that the rotationally movable barrel moves forward and backward along optical axis while rotating due to the interaction between the female screw portion formed in the distal end of the rotationally movable barrel and the male screw portion formed in the second flange portion of the fixed barrel. The forward and backward movement of the rotationally movable barrel along optical axis causes the rectilinearly movable barrel connected to the connecting portion of the rotationally movable barrel through the groove, to move forward and backward along optical axis. Accordingly, the CCD fixed to the rectilinearly movable barrel through the CCD carrier moves forward and backward along optical axis, thereby correcting the flange-back length.

Abstract: A high-efficiency, compact color illuminating system and a projection type image display apparatus using the color illuminating system are provided. The color illuminating system includes a light source, a spiral lens disc that periodically scrolls light by rotational movement, and an optical unit that isolates light beams of different wavelengths from white light emitted from the light source and guides the isolated light beams to enter at least two effective regions of the spiral lens disc. The projection type image display apparatus includes the color illuminating system, an image forming unit that generates images using scrolling light from the spiral lens disc, and a projection lens unit that enlarges and projects the images formed by the image forming unit on a screen.

Abstract: A projection lens system that projects projection light from a light modulator onto a screen and which is telecentric on an input side is provided. The projection lens system comprises a first meniscus lens that is disposed closest to the screen, is convex on a screen side, and has negative refractive power; and a second meniscus lens that is disposed next closest to the screen, is convex on a screen side, and has negative refractive power. The first meniscus lens is made of plastic and at least one out of two curved surfaces thereof is aspherical, and a refractive power of the first meniscus lens is lower than a refractive power of the second meniscus lens. In the projection lens system, far superior aberration-correcting performance can be achieved and a drop in aberration-correcting performance due to thermal deformation can be prevented.

Abstract: An optical device for viewing an image is provided. The optical device comprises a plurality of optical channels positioned adjacent one another, each optical channel having an image detector and a complimentary objective lens spaced by a respective distance. A focusing mechanism is coupled to the optical device and configured to simultaneously adjust the respective distance between the image detector and the objective lens of each optical channel.

Abstract: Disclosed is an optical system of a zoom-camera comprises a plurality of lens groups so that the path of a light can be multi-directionally refracted. The optical system comprises a base member, a first lens group mounted on the base member for refracting a light reflected and incident from an object to a first direction, a second lens group for effecting a zoom function, a third lens group for refracting the light passing through the second lens group to a second direction, a fourth lens group for effecting a zoom function as well as a focusing function while compensating a variation of an image plane caused by the zoom function, and power transmission means for transmitting power for sliding the second and fourth lens groups.