Abstract: There is provided an optical system and method for shaping a polychromatic light into a substantially uniform profile beam along a first axis. A polychromatic divergent light with having multiple wavelength components is provided with a dispersion of divergence. A collimation optic collimates the polychromatic divergent light. A shaping lens shapes the collimated beam into a shaped beam with a nearly uniform profile along the first axis, the dispersion of divergence causing a deviation from uniformity of the nearly uniform profile. A focusing optic focuses the shaped beam. A combination of the collimation and focusing optics shows a chromatic focal shift that compensates for said dispersion of divergence, so as to reduce the deviation from uniformity to obtain a profile with a substantially uniform intensity along the first axis, for all of said multiple wavelength components.

Abstract: A miniaturized optical head provided to equip the distal end of a beam of flexible optical fibres scanned by a laser beam, is designed to come in contact with a sample and to excite the sample confocally. This optical head includes elements for correcting spherical aberrations and focusing members. The focusing members include: at least a first lens (L4) of high convergence associated with a spherical or hemispherical lens (L5) arranged at the distal end of the optical head, and elements for correcting the axial and lateral chromatic aberration provided with a single divergent lens (3b) whose curvature is substantially centered on the pupil of the optical fibre beam and arranged at the exact distance for this pupil for which the conditions of lateral achromatization coincide with the conditions of axial achromatization; this divergent lens being associated with a second convergent lens (L3a) in the form of a doublet (L3).

Abstract: An optical imaging assembly having cylindrical symmetry, comprising a plurality of lenses having surfaces with curvatures and spacings between the surfaces, such that an optical image formed by the plurality of lenses has a defocus aberration coefficient greater than 0.1 at a focal plane of the assembly.

Abstract: Disclosed is a fisheye lens comprised of the first through the seventh lens elements: wherein a field of view is larger than 180° a calibrated distortion is 10% or less, a relative illumination is 80% or more, all the refractive surfaces of the lens elements are spherical surfaces, the first lens element is a negative meniscus lens element having a convex surface facing an object side, the second lens element is a bi-concave lens element, the third lens element is a positive meniscus lens element having a convex surface facing an image side, a stop is located between the third and the fourth lens elements, the fourth lens element is a bi-convex lens element, the fifth lens element is a bi-concave lens element, the sixth and the seventh lens elements are bi-convex lens elements.

Abstract: A projection lens includes, in the order from a large conjugate side to a small conjugate side thereof, a negative lens group having a negative refractive power and a positive lens group having a positive refractive power. The positive lens group includes, in the order from the large conjugate side to the small conjugate side of the projection lens, a front sub-group and a rear sub-group each having a positive refractive power. The projection lens satisfies the formulas: ?1.35<F1/F<?0.35 and 3<F24/F<5, where F1, F24, and F correspondingly represent the effective focal lengths of the negative lens group, the rear sub-group, and the projection lens.

Abstract: A photographic lens system includes a positive lens element, a positive lens element, a negative lens element having a concave surface facing toward the image, a diaphragm, a negative lens element having a concave surface facing toward the object, a positive lens element which is cemented to the negative lens element, and two or three positive lens elements, in this order from the object. An intermediate negative lens element, having the weakest negative refractive power out of all of the negative lens elements, is provided between the negative lens element having the concave surface facing toward the image and the negative lens element having the concave surface facing toward the object.

Abstract: It is to provide an imaging lens that has excellent optical performance while being compact and light. The imaging lens includes, in order from an object side to an image surface side, a diaphragm, a first lens that is a meniscus lens having a positive power whose convex surface faces the object side, and a second lens that is a meniscus lens having a positive power whose convex surface faces the image surface side, wherein a condition expressed by ?30.5?r3/d3??19 (where, r3: center radius curvature of the object side face of the second lens, and d3: center thickness of the second lens is to be satisfied.

Abstract: In a laser optical device including a beam shaping optical system 3 for shaping a laser beam 2 into a predetermined cross-sectional intensity distribution and converging the light and an image formation optical system 6 for forming an image of a shaped beam 4 shaped and converged through the beam shaping optical system 3, the image formation optical system 6 is made up of an objective lens system 8 having a negative focal length placed ahead of a focal plane 7 of the beam shaping optical system 3 and an imaging lens system 9 placed behind the objective lens system 8.

Abstract: An optical imaging assembly (22) having cylindrical symmetry, comprising a plurality of lenses having surfaces with curvatures and spacings between the surfaces, such that an optical image formed by the plurality of lenses has a defocus aberration coefficient greater than 0.1 at a focal plane of the assembly.

Abstract: Provided are a wafer scale lens, which is so short in an optical total length with respect to an image height that it can correct an aberration satisfactory, and an optical system including the wafer scale lens and having a thin lens element on the side closest to the image. The optical system includes a first lens having a positive refractive power relative to an object, and a second lens arranged on the side of the image of the first lens and having a recessed shape on the side of the object. At least one lens is arranged on the side of the second lens.

Abstract: The present invention provides a wafer-scale lens in which a total optical length is short in comparison with an image height and astigmatism and other aberrations can be well corrected, and an optical system in which a lens element closest to the object side is thin in thickness. The optical system includes a first lens that is disposed closest to the object side and is positive in refractive power; a second lens that is disposed on the image side and has a concave surface on the object side; an i-th lens, (i?3), that is disposed closest to the image side in lenses disposed on the image side and includes an i-th lens plate and a lens element which is formed on at least either the object side surface or the image side surface of the i-th lens plate, and has a refraction index different from the i-th lens plate and positive or negative refractive power; and satisfies 0.9>Ymax/Y>0.

Abstract: An imaging module includes an imaging lens system and an image sensor. The imaging lens system includes a first lens, a second lens, a third lens, and a fourth lens. The imaging module satisfies the formulas, 2.4<F1/TTL<3.0, ?7.0<F2/TTL<?5.5, 0.95<F3/TTL<2.0, and ?3.5<F4/TTL<?2.5, wherein the TTL is the distance from the object surface of the first lens to the sensing surface of the image sensor on the optical axis of the imaging lens system, the F1 is the focal length of the first lens, the F2 is the focal length of the second lens, the F3 is the focal length of the third lens, and the F4 is the focal length of the fourth lens.

Abstract: It is an object of the present invention to provide an imaging device that, even if the optical axis of the multifocal lens has a deviation resulting from its decentered surfaces, can prevent an image from being deteriorated by the low precision lens. The imaging device comprises a solid state image sensor for taking an image of an object to produce an image signal indicative of the image, an aspherical single focus lens, a bifocal lens disposed in front of the solid state image sensor, the bifocal lens having two focal distances, and an aperture diaphragm located just before the bifocal lens.

Abstract: A lens system includes, in order from the object side, a positive refractive power first lens, a positive refractive power second lens; and a negative refractive power third lens. Wherein the lens system satisfies the following conditions: (1) (|G1R2|?G1R1)/(|G1R2|+G1R1)<0.5; and (2) 0.2<G1R1/F<0.6, wherein, G1R1 is the radius of curvature of a surface of the first lens facing the object side of the lens system, G1R2 is the radius of curvature of the surface of the first lens facing the image side of the lens system, and F is a focal length of the lens system.

Abstract: An optical component includes a lens holder including a first electrode, an insulating structure formed on the first electrode and having a through hole provided as an optical path, and at least one second electrode formed inside the insulating structure to encompass the through hole, and at least one microlens located in the through hole and formed of transparent resin.

Abstract: The invention relates to an objective, particularly for infrared light and/or visible light, for imaging an object in an image plane, wherein the objective comprises an objective lens to be directed toward the object and an image lens directed toward the image plane, wherein the following applies with regard to imaging an object for each point within the image circle of the objective or for at least one point within the image circle of the objective: Formula (I), wherein Pmax represents the maximum light output of a point in the image plane for imaging a point on the object, and wherein Pmin represents the light output of an additional point in the image plane for imaging the point on the object, the light output of which with regard to imaging the point on the object is greater than the light output of each additional point in the image plane with regard to imaging the point on the object.

Abstract: An optical system used for an image pickup apparatus including an image pickup element is provided. The optical system includes a negative lens disposed furthest away on the enlargement conjugation side and satisfies the following condition: 80 degrees<2?, where 2? (degrees) denotes an angle of view of the optical system. In addition, the following parameters of the optical system are optimally determined: a lens open angle ? of a surface of the negative lens on the reduction conjugation side, an index of refraction Ndn and an Abbe number ?dn of a material of the negative lens for a d-line, and a relative partial dispersion ?gFn of the material of the negative lens for a g-line and an F-line.

Abstract: Provided is a camera module. The camera module includes an aperture stop, a first lens, a second lens, a third lens, and an image sensor. The first lens has a positive refractive power to transmit light that has passes through the aperture stop, and the second lens has a negative refractive power to transmit light that has passed through the first lens. The third lens has a negative refractive power to transmit light that has passed through the second lens. The image sensor detects light that has passed through the third lens.

Abstract: A macro lens system includes a positive first lens group, a diaphragm, a positive second lens group, and a negative third lens group. Upon focusing from an object at an infinite distance to an object at a closer distance, the positive first lens group and the positive second lens group integrally move toward the object without changing a distance therebetween with respect to the negative third lens group which is stationary with respect to an imaging plane in a camera body. The positive first lens group includes a negative first lens sub-lens group and a positive second sub-lens group which are divided at a maximum distance between lens elements in the positive first lens group. The macro lens system satisfies specified conditions.

Abstract: A fixed-focus lens including a first lens group and a second lens group is provided. The first lens group has a negative refractive power, and consists essentially of a first lens, a second lens, a third lens, and a fourth lens arranged in sequence from an object side to an image side. Refractive powers of the first, second, third, and fourth lenses are negative, negative, positive, and negative respectively. The second lens group is disposed between the first lens group and the image side, and has a positive refractive power. The second lens group includes a fifth lens and a sixth lens arranged in sequence from the object side to the image side. Refractive powers of the fifth lens and the sixth lens are both positive.

Abstract: A vehicle camera and wide-angle objective lens system are disclosed wherein the wide-angle objective lens has image aberrations or errors that do not deteriorate the detection of obstructions or obstacles in its field of view.

Abstract: A reduced size catadioptric objective and system is disclosed. The objective may be employed with light energy having a wavelength in the range of approximately 190 nanometers through the infrared light range. Elements are less than 100 mm in diameter. The objective comprises a focusing lens group configured to receive the light energy, at least one field lens oriented to receive focused light energy from the focusing lens group and provide intermediate light energy, and a Mangin mirror arrangement positioned to receive the intermediate light energy from the field lens and form controlled light energy for transmission to a specimen. The Mangin mirror arrangement imparts controlled light energy with a numerical aperture in excess of 0.65 and up to approximately 0.90, and the design may be employed in various environments.

Abstract: A small projection lens includes a first lens, which is a biconvex lens, an aperture, an aperture diaphragm (or an aperture), a second lens, which is a negative meniscus lens having a concave surface facing a magnification side, a third lens, which is a positive meniscus lens having a convex surface facing a reduction side, and a fourth lens, which is a biconvex lens having aspheric surfaces at both sides on an optical axis, arranged in this order from the magnification side. A minimum portion of the length of all lens elements of the small projection lens in a diametric direction vertical to the optical axis is equal to or less than 15 mm, and the small projection lens satisfies the following conditional expression: 2.5<?/S<10.0 (where S indicates the maximum length of a magnification-side image (inch) and ? indicates a magnifying power).

Abstract: The invention is aimed at providing a lens having a wider angle of view, increased relative aperture, and higher quality of images.

Abstract: An optical system is configured for projecting an image having a quasi-flat-topped intensity profile from a laser-beam having a Gaussian intensity profile. The optical system includes a diffraction limited lens for focusing the laser beam and one or more optical elements that introduce aberration into the beam before the beam is focused. The aberration introduced causes the Gaussian intensity profile to be changed to the quasi-flat-topped intensity profile at some position in a focal region of the diffraction-limited lens.

Abstract: Apparatus, methods, and systems provide emitting, field-adjusting, and focusing of electromagnetic energy. In some approaches the field-adjusting includes providing an extended depth of field greater than a nominal depth of field. In some approaches the field-adjusting includes field-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: An apochromatic lens with an aperture and exclusively refractive optical elements, comprising a plurality of lenses arranged in lens groups along an optical axis, wherein lenses of different materials are provided and wherein the lenses respectively comprise one of the following listed materials: calcium fluoride (CaF2), synthetic quartz (SiO2) or another radiation-resistant optical material.

Abstract: An imaging system (FIG. 3) is disclosed that has a wavelength dependent focal shift caused by longitudinal chromatic aberration in a lens assembly (203) that provides extended depth of field imaging due to focal shift (213,214) and increased resolution due to reduced lens system magnification. In use, multiple wavelengths of quasi-monochromatic illumination, from different wavelength LEDs (206,207) or the like, illuminate the target, either sequentially, or in parallel in conjunction with an imager (200) with wavelength selective (colored) filters. Images are captured with different wavelengths of illumination that have different focus positions (208,209), either sequentially or by processing the color planes of a color imager separately. Extended depth of field, plus high resolution are achieved. Additionally, information about the range to the target can be determined by analyzing the degree of focus of the various colored images.

Abstract: An optical system in which a maximum value of a height from an optical axis of a paraxial marginal ray closer to an expanded side than a point of intersection between an optical axis and a paraxial chief ray, includes a lens unit Lr including at least one refractive optical element Gn of a negative refractive power. In the optical system, ?d (Gn) as an Abbe number of a material of the refractive optical element Gn, ?gF (Gn) as a partial dispersion ratio regarding g and F-lines, FGn as a focal lengths of the refractive optical element Gn, and Fr as focal lengths of the lens unit Lr are set appropriately.

Abstract: An image capturing lens including: in order from an object side, a first lens group having a negative refractive power; a stop; and a second lens group having a positive refractive power; the first lens group including, in order from the object side, a first lens in a meniscus shape having a convex surface which faces the object side and a negative refractive power, and a second lens in a meniscus shape having a convex surface which faces the object side and a positive refractive power, and the second lens group including, in order from the object side, a third lens in a double-convex shape having a positive refractive power, a fourth lens in a double-concave shape having a negative refractive power, and a fifth lens having a positive refractive power.

Abstract: The present invention provides new projection schemes for wide angle imaging lenses rotationally symmetric about optical axis wherein the field of view of lenses and the size of image sensors are directly reflected without any reference to the effective focal length of the lenses. This invention also provides explicit examples of wide-angle lenses implementing the newly developed projection schemes. According to the present invention, by providing new projection schemes explicitly reflecting the physical quantities of direct interest to the user for industrial applicability, namely, the field of view and the image sensor size, it is possible to realize wide-angle lenses providing the most satisfactory images.

Abstract: The invention relates to an image pickup system comprising an electronic view finder suitable for achieving compactness and having a sufficient viewing angle of field and satisfactory optical performance. The image pickup system comprises an image pickup device, an image display device for displaying an image, a controller for converting image formation obtained from the image pickup device into a signal that enables the image information to be formed on the image display device, and a viewing optical system for guiding an image displayed on the display device to a viewer's eye. The viewing optical system comprises at least three lenses.

Abstract: There is provided a super wide angle optical system including, arranged about an optical axis: a first lens having a negative refractive power and having a meniscus shape with a convex object-side surface; a second lens having a negative refractive power and having a meniscus shape with a convex object-side surface; a third lens having a positive refractive power and having both convex surfaces; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; and a sixth lens having a positive refractive power and having both convex surfaces.

Abstract: An image reading lens is provided and includes: in order from an object side of the image reading lens, a first lens of a negative lens having a meniscus shape directing a concave surface toward the object side thereof; a second lens having a biconvex shape; a stop; a third lens of a positive lens having a meniscus shape directing a convex surface toward an image side thereof; and a fourth lens of a negative lens having a meniscus shape directing a concave surface toward the object side thereof. The image reading lens satisfies the following conditional expressions: 2.4<f3/f<3.5 0.007<D2/f<0.028 where f represents a focal length of the image reading lens, f3 represent a focal length of the third lens, and D2 represents a spacing between an image-side surface of the first lens and an object-side surface of the second lens.

Abstract: The invention relates to an image pickup system comprising an electronic view finder suitable for achieving compactness and having a sufficient viewing angle of field and satisfactory optical performance. The image pickup system comprises an image pickup device, an image display device for displaying an image, a controller for converting image formation obtained from the image pickup device into a signal that enables the image information to be formed on the image display device, and a viewing optical system for guiding an image displayed on the display device to a viewer's eye. The viewing optical system comprises at least three lenses.

Abstract: A lens system has the following components in order from an object side: one negative lens component; a positive lens component; a negative lens component having a concave surface of a large curvature on an image side; an aperture stop; a negative lens component having a concave surface of a large curvature on the object side; and a positive lens component; the lens system satisfies a condition of the following expression: 0.75<SF1<1.60, where SF1=(R1+R2)/(R1?R2), and where R1 is a radius of curvature of an object-side lens surface of the negative lens component located nearest to the object side, R2 is a radius of curvature of an image-side lens surface thereof, and SF1 is a shape factor thereof.

Abstract: A photographic lens system including multiple lens units where at least a part of one of the multiple lens units is movable in a direction, which includes a vector component orthogonal to an optical axis, and where the photographic lens system can have a normal and image stabilizing mode.

Abstract: An imaging lens module includes a fixed diaphragm and an optical module. The optical module includes first, second, third, fourth and fifth lenses arranged from an object side to an image side in a sequence of: the first lens, having a negative refractive power, a convex surface disposed towards the object side, and a concave surface disposed towards the image side; the diaphragm; the second lens having a positive refractive power and a convex lens disposed towards the image side; and the third lens; being a meniscus negative lens; the fourth lens, being a positive lens, and adhered with the third lens to form a composite lens; the fifth lens, having a positive refractive power, such that the imaging lens module is a lens module with the features of high imaging quality and high yield rate.

Abstract: The invention relates to a projection objective with fixed focal length for digital projection, characterized by the following features: a first optical subassembly of several lenses seated in a first objective housing; a second optical subassembly of several lenses seated in a second objective housing; and a third objective housing that, in the region of one end, accepts the first objective housing, and in the region of the other end, accepts the second objective housing. Such an objective is designed to be structurally simple and makes possible a simple and precise assembly.

Abstract: A photographing optical system includes at least one of a positive lens and diffractive optical element being provided closer to an object side of the system than an intersection P of a light axis and paraxial chief ray, and a negative lens, provided closer to an image side than the intersection. The positive lens and the negative lens are formed of materials satisfying the following conditions when the maximum height of a paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the object side than the intersection is greater than a maximum height of the paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the image than the intersection: ?0.0015 ×?d +0.6425 <?gF 60 <?d where ?d is an Abbe number and ?gF is a partial dispersion ratio.

Abstract: The present invention provides a projection lens system comprising a double-gauss architecture with aspheric lens elements at the beginning and end of the lens system with a system stop therebetween and an acromatic lens element pair between each aspheric lens and the system stop. Also provided is a projection lens family comprising a plurality of lens systems, each having a double-gauss base architecture with aspheric lens elements at the beginning and end of the lens system with a system stop therebetween and an acromatic lens element pair between each aspheric lens and the system stop. Each lens system is optimized to provide a different cost/performance option.

Abstract: The present invention concerns a lens system. More specifically, it concerns a lens system comprising a first lens (3), a deflection element (5) and a second lens (6), wherein the deflection element (5) is arranged between the first lens (3) and the second lens (6). The deflection element comprises at least a first annular zone and a second annular zone, the annular zones being arranged in a concentric fashion and wherein the deflection angle of each annular zone is different from the deflection angle of every other annular zone. Furthermore, the present invention concerns a temperature analysis system comprising a lens system and the use of a temperature analysis system.

Abstract: A projection lens device includes, in order from a magnification side, a first lens group G1 having a negative refractive power, and a second lens group G2 having a positive refractive power. The projection lens device is substantially telecentric on a reduction side thereof. The second lens group G2 includes a three-element cemented lens L10 to L12 formed by cementing three lens elements. A space between the first lens group G1 and the second lens group G2 is set as the maximum inter-lens space (the maximum air space) so that a reflection mirror 4 can be inserted. Also, the projection lens device satisfies eight conditional expressions.

Abstract: A projector optical system for forming a real image by projecting an image of a display element is constituted by, sequentially from a projection side, an aperture diaphragm; and a first lens group having positive refractive power and having, in the interior thereof or on a lens surface at a projection side or at a display element side, a diffraction optical surface formed by a multilayer-type diffractive optical element in which diffraction gratings formed on two diffractive element components are arranged facing each other. The projector optical system is configured so as to satisfy the following expression 0.1<K/L<1.5 wherein L is a total length on an optical axis, and K is a distance on the optical axis from the aperture diaphragm to a surface of the first lens group that is closest to the projection side, and satisfy also the following expression 0.01<?Nd<0.45 wherein ?Nd is a difference between refractive indices of the two diffractive element components for a main wavelength (d-line).

Abstract: A refractive optical imaging system for imaging an object field arranged in an object surface of the imaging system into an image field arranged in an image surface of the imaging system on a demagnifying imaging scale has a multiplicity of optical elements which are configured and arranged such that a defined finite field curvature of the imaging system is set such that an object surface concavely curved relative to the imaging system is imaged into a flat image surface.

Abstract: The object is to provide an optical system with a wavelength selecting device. According to one aspect of the present invention, an optical system with a wavelength selecting device includes, in order from an object along an optical axis, an objective optical system composed of optical elements having refractive power and an aperture stop, a no-power optical group composed of optical elements having no refractive power, and an imaging device. The no-power optical group includes the wavelength selecting device for making short wavelength light be selectively substantially non-transparent. The wavelength selecting device preferably satisfies the predetermined conditional expressions.

Abstract: Providing an optical system having excellent optical performance with sufficiently correcting spherical aberration and curvature of field, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes a plurality of lens groups, at least one of the plurality of lens groups having an A lens that satisfies at least one of given conditional expressions.

Abstract: An optical element is molded by placing at least two glass materials between a pair of molding dies having optical-function transfer surfaces, a total volume of the two glass materials being same as that of the optical element, the two glass materials being made of a same material and being formed to individually come in contact with centers of the optical-function transfer surfaces when they are pressed; and by heating and pressing the glass materials using the pair of molding dies. Thereby, closed spaces are not formed between the optical-function transfer surfaces and the glass materials coming in contact with the centers of the optical-function transfer surfaces. Therefore, it is possible to reduce a load of the molding process while preventing an appearance defect of the optical element by applying just a single cycle of a placing process, a transferring (heating and pressing) process and a cooling process.

Abstract: The invention is directed to an optical system with reduced chromatic aberration, particularly for use in microscopes for imaging the light source in the aperture diaphragm of a condenser. According to the invention, an adapter assembly is associated with a collector assembly. The adapter assembly has an apochromaticizing action and substantially reduces the chromatic aberration of the collector assembly and accordingly achieves the high aperture required on the lamp side for achieving high efficiency.

Abstract: A zoom lens includes in the order from an object a first lens group having a negative refractive power, including at least one negative lens and one positive lens, wherein a negative plastic lens having one or more aspherical surfaces is arranged on a side closest to the object; a second lens group having positive refractive power, including a first positive lens, a second positive lens and a negative lens in the order from the object; and a third lens group, wherein each lens group is moved in a direction of an optical axis for zooming, and the following expressions are satisfied: 2.0<|f1/fw|<3.0 1.2<|f1a/fw|<1.8 where f1, f1a and fw represent focal lengths of the first lens group, of the negative plastic lens arranged closest to the object, and at a wide-angle end of an entire zoom lens, respectively.