Abstract: A stacked optical glass lens array, a stacked lens module and a manufacturing method thereof are disclosed. The stacked optical glass lens array includes at least two optical glass lens arrays whose optical axis are aligned and then stacked with each other by cement glue in glue grooves. A stacked optical glass lens element can be singularized by cutting along with the alignment notches of stacked optical glass lens array. The stacked lens module is formed by a single stacked optical glass lens element and related optical element mounted in a lens holder. Thereby the optical axis of the lenses of the stacked lens module are aligned precisely, the manufacturing processes are simplified and the production cost is reduced.

Abstract: A lens is provided which is configured so that the dimensional accuracy of the lens surface can be evaluated easily and accurately, and the control of the accuracy of the lens can be easily performed. The lens comprises a lens effective part having lens surfaces formed around an optical axis as the center and an edge part in a doughnut shape as viewed in a plan view, which is extended along the outer periphery of the lens effective part. The edge part and the lens effective part are molded simultaneously, and annular indices around the optical axis as the center, with which the dimensional accuracy of the lens surfaces can be detected, are formed on both the surfaces of the edge part.

Abstract: A composite optical device 1 includes a first optical section 10 having an optical functional surface 11 and a second optical section 20 bonded to the first optical section 10 on the optical functional surface 11. The optical functional surface 11 includes a smooth part 13 and a concave-convex part 12 adjacent to each other, and is constructed so that a position P2, along a normal direction of the smooth part 13, of a concave bottom of the concave-convex part 12 can be closer to the center of the first optical section 10 than a position P1 along the normal direction of an end of the smooth part 13 on a side of the concave-convex part 12 in a boundary vicinity portion NR between the smooth part 13 and the concave-convex part 12.

Abstract: Disclosed are a lens assembly and a method for manufacturing the same. The method includes delineating and processing a surface of a lens substrate to form a plurality of lens units; bonding a plurality of such lens substrates having different properties to each other as one integrated body; and dicing the integrated body into a lens unit, thereby producing a plurality of lens assemblies.

Abstract: A protective film (10) is eccentrically adhered to a concave-side transfer surface (3b) of a first mold (3) which is used in a plastic lens forming mold, and part (10a) of the peripheral portion of the protective film is projected laterally from the mold (3). The protective film (10) comprises a film layer with an outer diameter smaller than that of the first mold (3), and an adhesive layer with a relatively low adhesive strength which is formed on one surface of the film layer.

Abstract: Provides an objective lens, an optical head and an optical disc apparatus (drive) capable of compensating for various types of aberrations including wavelength changes for a plurality of types of optical discs including high density optical discs, DVDs and CDs with a good wavelength dispersion compensation ability and thus capable of providing good recording or reproduction characteristics. The objective lens according to the present invention includes a first lens and a second lens substantially in close contact with each other such that optical axes thereof match each other, and acts as a convex lens as a whole. Each lens includes a central portion including the optical axis and a peripheral portion located in a periphery of the central portion. The central portion of the first lens acts as a convex lens; and the central portion of the second lens acts as a concave lens. Where the refractive index of the first lens at d line (wavelength: 587.

Abstract: A lens system comprising an inner lens structure and an outer lens structure. The inner lens structure comprises an inner positive lens, a first transparent substrate and an inner negative lens. The outer lens structure comprises an outer positive lens, a second transparent substrate and an outer negative lens.

Abstract: An optical system is mounted in a mobile communication terminal and a personal digital assistant (PDA) for a monitoring camera and a digital camera. The optical system includes: a first optical element formed in a meniscus shape entirely convex toward an object and having a positive refractive power; and a second optical element having an object-side surface convex toward the object and an image-side surface formed of a plane, wherein the second optical element includes: a fourth optical element having an object-side surface entirety convex toward the object on the optical axis; and a fifth optical element having an object-side surface in contact with an image-side surface of the fourth optical element, and an image-side surface and an object-side surface formed of planes respectively.

Abstract: A cemented lens is produced by cementing a first lens having a concave surface with a second lens having a convex surface. The second lens is placed on the concave surface of the first lens to align the concave surface with the convex surface. Adhesive is dropped in each predetermined place around the second lens by a predetermined quantity to abut against an outer circumferential end of the second lens. The position of the second lens is adjusted. The adhesive is irradiated with ultraviolet light. Thus, the outer circumferential end of the second lens is bonded with the concave surface of the first lens. There is no bonding layer between the cementing surfaces as in the related art. There is no fear that light passes through the bonding layer. It is therefore unnecessary to consider deterioration of optical performance caused by deformation of the adhesive exposed to intensive light.

Abstract: In a bonded optical element, a second optical element is bonded to a first optical element by forming the second optical element by heating and pressing against the first optical element a second optical element material. The first optical element is a concave lens. A bonded face of an intermediate portion between a lens portion and an edge portion of the first optical element is substantially in an R shape in section.

Abstract: An exemplary compound lens includes a rigid light pervious layer, a first plastic lens, and a second plastic lens. The rigid light pervious layer includes a first surface and a second surface opposite to the first surface. The first plastic lens is attached on the first surface, and is comprised of a first material. The second plastic lens is formed on the second surface, and is comprised of a second material. A refractive index of the first material is different from that of the second material. An optical axis of the first plastic lens is in alignment with an optical axis of the second plastic lens.

Abstract: A lens module includes a first lens. The first lens includes a first central round portion and a first peripheral portion. The first peripheral portion has a first radially extending portion surrounding the first central round portion, and a first axially extending portion extending axially from the first radially extending portion. The first radially extending portion comprises a first surface. The first axially extending portion comprises a first cylindrical side surface and a second side surface. The first cylindrical side surface is interconnected between the second side surface and the first surface. The first cylindrical side surface is coaxially aligned with a principal axis of the first central round portion and the second side surface is inclined relative to the principal axis of the central round portion.

Abstract: An exemplary lens includes an optical axis, an optically active part, and an optically inactive part surrounding the optically active part. The optically inactive part includes a base and a peripheral sidewall extending in a direction parallel to the optical axis. The base is connected with the active part. The side wall is a hollow cylinder. The sidewall has an internal thread formed on an internal surface thereof.

Abstract: It is an object of the present invention to provide a lens having small birefringence, large refraction and excellent transparency and heat resistance and an optical unit including the lens. The present invention is a lens obtained from a polycarbonate copolymer (I) which is composed of a unit (A) represented by the following formula: (R1 to R4 are each independently a hydrogen atom, hydrocarbon group having 1 to 9 carbon atoms or halogen atom) and a unit (B) represented by the following formula: (plurality of R5 and R6 are each independently a hydrogen atom or the like, and R7 and R8 are each independently a hydrogen atom or alkyl group having 1 to 9 carbon atoms, with the proviso that the total number of carbon atoms of R7 and R8 is 9 or 10), the content of the unit (A) being 50 to 80 mol % of the total of all the units, and an optical unit including the lens.

Abstract: A second optical element is bonded to a first optical element by forming the second optical element by pressing a second optical element material against the first optical element under a condition free from restriction to the second optical element material in the direction orthogonal to a direction in which the second optical element material is pressed.

Abstract: In a bonded optical element, a second optical element is bonded to a first optical element by forming the second optical element by heating and pressing against the first optical element a second optical element material. The second optical element includes an element body part and a contact part extending from the element body part to be in contact with the outer peripheral face of the first optical element.

Abstract: A lens unit includes at least three lenses that are laminated and received in a lens barrel. The lenses include a first lens, a second lens, and a third lens that are laminated from the side of an object in this order. The first lens includes a first contact face that is formed at an outer peripheral portion thereof and comes in contact with the second lens, and a first opposite surface that is formed at an inner peripheral portion of the first contact face, is spaced from the second lens, and faces the second lens. The second lens includes a second contact face that is formed at a position closer to the center of the second lens than the first contact face and comes in contact with the third lens, and a second opposite surface that is formed at an outer peripheral portion of the second contact face, is spaced from the third lens, and faces the third lens.

Abstract: A cylindrical model eye comprises a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface, a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface. The second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has substantially the same radius curvature radius as the second cylindrical surface.

Abstract: An exemplary optical lens assembly includes a first lens and a second lens. The first lens comprises a first central portion and a first annular stepped portion. The first annular stepped portion has a first outer step and a second outer step. The first outer step has a first outer side surface and a first downward-facing surface. The second outer step has a second outer side surface. The second lens comprises a second central portion and a second annular stepped portion. The second annular stepped portion has a first inner step and a second inner step. The first inner step has a first inner side surface and a first upward-facing surface. The second inner step has a second inner side surface. The first annular stepped portion is engaged in the second annular stepped portion. A gap exists between the second outer side surface and the first inner side surface.

Abstract: An optical element is provided, which is small in distortion when at least three optical members including a resin layer sandwiched by the optical members are cemented together, has a high environmental resistance and optical performance, and has an excellent chromatic aberration correction effect. In the optical element, the resin layer is formed on one of light incident/exit surfaces of a first optical member, and a second optical member is cemented to the resin layer by a bonding material. A condition of ?g<?r is satisfied where ?r indicates an outer diameter of the resin layer and ?g indicates an effective region diameter of a surface of the second optical member which is cemented to the resin layer.

Abstract: An image capture lens is disclosed. The image capture lens includes a glass substrate having a first side and an opposing second side, a first lens material with a first refractive index, and a second lens material with a second refractive index higher than the first refractive index. The first lens material is formed on the first side of the first glass substrate and has a curved top surface. The second lens material covers the first lens material and the first glass substrate and has a curved top surface.

Abstract: An imaging module and method of fabrication. The method comprises forming a first lens wafer with a plurality of outer negative lenses and forming a second lens wafer with a plurality of inner negative lenses The method further comprises bonding the first lens wafer and second lens wafer to create a bonded stack; forming a plurality of inner positive lenses on the second lens wafer and bonding a spacer wafer to the second lens wafer; and forming a plurality of outer positive lenses on the first lens wafer.

Abstract: An apparatus includes a recording medium (100) having substrate (220) and markable coating (230). The apparatus also includes a recording/transmitting device including a light source (150) having at least two separate lasers, a unified apochromatic lens structure (148, 200, 300) having at least two separate lenses functioning as one structure, and a light separating means (201, 301). Lens structure (148, 200, 300) and light separating means (201, 301) enable light (152) to a) pass through lens structure (148, 200, 300) with at least two different wavelengths directed to at least two different spots on medium (100), so as to cause a localized change in chemical and/or physical properties to form at least two optically detectable marks (242) in markable coating (230), or b) pass through lens structure (148, 200, 300) with at least two different wavelengths directed to at least two different spots on medium (100), so as to cause at least one optically detectable mark (242) to reflect light (152).

Abstract: The disclosure provides projection objectives which may be used in a microlithographic projection exposure apparatus to expose a radiation-sensitive substrate arranged in the region of an image surface of the projection objective with at least one image of a pattern of a mask arranged in the region of an object surface of the projection objective. The disclosure also provides projection exposure apparatus which include such projection objectives, as well as related components and methods.

Abstract: An optical unit includes one or more optical elements. At least one 40 of the optical elements has: an optical functional surface, that refracts incident light, within an effective diameter; and a rough surface 49 formed on an optical functional surface 42b that is formed outside the effective diameter and that scatters the incident light which has been internally reflected. With this configuration, light which is incident on the optical element and which may generate flare or the like when it is internally reflected by the optical functional surface outside the effective diameter is scattered by the rough surface formed on the optical functional surface outside the effective diameter. Therefore, generation of the flare or the like is suppressed. Also, since the optical unit is constituted by such an optical element having the rough surface, generation of the flare or the like is suppressed.

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: An optical unit includes one or more optical elements 15 and 25. At least one of the one or more optical elements has an optical functional surface that refracts incident light and rough surfaces 19 and 29 formed on an outer side with respect to the optical functional surface. The rough surfaces scatter the incident light which has been internally reflected. With this configuration, the rough surface formed on the surface located on the outer side with respect to the optical functional surface scatters the light which is incident on the optical element and which may generate ghost due to its internally reflection by the surface located on the outer side with respect to the optical functional surface. Therefore, generation of the ghost is suppressed. Also, since the optical unit includes the optical element having the rough surface, the generation of the ghost is suppressed.

Abstract: A lens module comprises a first lens, a second lens, a spacer, an adhesive and a lens barrel. The spacer is sandwiched between the first lens and the second lens, and includes a first surface, an opposite second surface, a lateral surface, a through hole and a plurality of cutouts. The lateral surface interconnects the first surface and the second surface. The through hole is defined in a central portion of the spacer. The cutouts are defined in the lateral surface. The adhesive is applied in the cutouts and interconnects the first lens with the second lens. The lens barrel receives the first lens, the second lens, the adhesive and the spacer therein.

Abstract: A protective film (10) is eccentrically adhered to a concave-side transfer surface (3b) of a first mold (3) which is used in a plastic lens forming mold, and part (10a) of the peripheral portion of the protective film is projected laterally from the mold (3). The protective film (10) comprises a film layer with an outer diameter smaller than that of the first mold (3), and an adhesive layer with a relatively low adhesive strength which is formed on one surface of the film layer.

Abstract: A method, apparatus and system providing a microlens having a substantially flat upper surface and having a plurality of holes arranged in a pattern in a microlens material which produces a focal point at a desired location.

Abstract: An objective having a plurality of optical elements arranged to image a pattern from an object field in an object surface of the objective to an image field in an image surface region of the objective at an image-side numerical aperture NA>0.8 with electromagnetic radiation from a wavelength band around a wavelength ?, includes a number N of dioptric optical elements, each dioptric optical element i made from a transparent material having a normalized optical dispersion ?ni=ni(?0)?ni(?0+1 pm) for a wavelength variation of 1 pm from a wavelength ?0. The objective satisfies the relation ? ? i = 1 N ? ? ? ? n i ? ( s i - d i ) ? ? 0 ? NA 4 ? A for any ray of an axial ray bundle originating from a field point on an optical axis in the object field, where si is a geometrical path length of a ray in an ith dioptric optical element having axial thickness di and the sum extends on all dioptric optical elements of the objective. Where A=0.

Abstract: An achromatic lens system is provided with a cemented resin lens having positive refractive power constructed by a resin lens L11 having positive refractive power cemented with a resin lens L12 having negative refractive power, and a close-contact multi-layer type diffractive optical element L11E, the diffractive optical element L11E being disposed to an image side of the cemented resin lens, the diffractive optical element L11E being constructed by cementing two diffractive element members DE11, DE12 each made of different optical materials with each other, and the cemented surface thereof being a diffractive optical surface Gf on which grooves of a diffraction grating are formed, there by being lightweight and easily manufactured, capable of excellently correcting chromatic aberration and spherical aberration at the same time.

Abstract: An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers, at least one of the two optical elements being a spherical lens. The resulting optical system presents a high numerical aperture. One of the optical elements may be a refractive element formed in a material having a high index of refraction.

Abstract: The present invention relates to a composite lens and a method for manufacturing the same, particularly to a composite lens in which a second lens component is coupled to a first lens component at part of a first surface, and intends to improve optical characteristics. A composite lens (1) has a first lens component (10) and a second lens component (20). The first lens component (10) has a first surface including a first lens surface (13), a peripheral surface (15a) surrounding the first lens surface (13) and a ring surface (17a) included in the peripheral surface (15a) and surrounding the first lens surface (13), and a second lens surface (12) on the opposite side of the first lens surface (13). The second lens component (20) is coupled to the first lens component (10) at part of the first surface surrounded by the ring surface (17a).

Abstract: An exemplary lens assembly comprises a first lens and a second lens. The first lens includes a first central portion, a first peripheral portion surrounding the first central portion and a stepped portion. The stepped portion has a first step upwardly extending from the first peripheral portion and a second step upwardly extending from the first step. The first step has an inner side surface, an outer side surface, and a top surface. The second step has a side surface adjoining the top surface. The second lens includes a second central portion, a second peripheral portion surrounding the second central portion and a protrusion extending downwardly from the second peripheral portion. The protrusion has an engaging surface and a bottom surface adjoining the engaging surfaces. The protrusion is engaged with the stepped portion in a manner that the bottom surface is in contact with the top surface.

Abstract: An objective lens system for an optical pickup apparatus, includes in order from an object side: a first lens group having negative paraxial power P1 (mm?1); and a second lens group having positive paraxial power P2 (mm?1) for converging a light flux emitted from the first lens group on an information recording surface of an optical information recording medium.

Abstract: A lens module includes: a base unit, a first lens unit, a spacer unit, a second lens unit and a cap unit. The base unit has a first through hole having a first tapered portion. The first lens unit has a first peripheral portion having second and third tapered portions. The second and third tapered portions taper in opposite directions. The second tapered portion is engaged in the first tapered portion of the first through hole of the base unit. The spacer unit has a second through hole having fourth and fifth tapered portions. The fourth and fifth tapered portions taper in opposite directions. The fourth tapered portion is engaged in the third tapered portion. The second lens unit has a second peripheral portion having a sixth tapered portion. The sixth tapered portion is engaged in the fifth tapered portion of the second through hole of the spacer unit.

Abstract: An optical part for a camera comprising a substrate made of a polyolefin plastic and an optical resin layer placed on the substrate, wherein the surface of the substrate is provided with a polar group and the optical resin layer is formed from a resin composition including a fluorene compound having a (meth)acryloyl group.

Abstract: The present invention relates to improved optical structures, related manufacturing processes and assemblies incorporating the improved optical structures. In at least one embodiment accurate light source color information is provided throughout substantially the entire associated field of view.

Abstract: A composite lens of the present invention has a resin layer made from a resin to be polymerized by ultraviolet rays provided on at least a part of a surface of a glass base material, the resin layer including a completely cured resin layer and an incompletely cured resin layer. The incompletely cured resin layer may be formed outside a lens effective diameter. Preferably, the incompletely cured resin layer has a polymerization degree of 60 to 90%.

Abstract: An exemplary optical lens group includes a first lens and a second lens. The first lens comprises a first central portion and an annular stepped portion. The annular stepped portion has a first outer step and a second outer step. The first outer step has a first outer side surface and a first downward-facing step surface. The second outer step has a second outer side surface and a second downward-facing step surface. The second lens comprises a second central portion and a peripheral portion. The peripheral portion has an inner side surface. The first lens is engaged in the second lens in a manner that the first outer side surface of the first lens is in contact with the inner side surface of the second lens. The second outer side surface of the first lens is spaced apart from the inner side surface of the second lens.

Abstract: Substrate-guided relays that employ light guiding substrates to relay images from sources to viewers in optical display systems. The substrate-guided relays are comprised of an input coupler, an intermediate substrate, and an output coupler. In some embodiments, the output coupler is formed in a separate substrate that is coupled to the intermediate substrate. The output coupler may be placed in front of or behind the intermediate substrate, and may employ two or more partially reflective surfaces to couple light from the coupler. In some embodiments, the input coupler is coupled to the intermediate substrate in a manner that the optical axis of the input coupler intersects the optical axis of the intermediate substrate at a non-perpendicular angle.

Abstract: A lens module includes a first lens. The first lens includes a first central round portion and a first peripheral portion. The first peripheral portion has a first radially extending portion surrounding the first central round portion, and a first axially extending portion extending axially from the first radially extending portion. The first radially extending portion comprises a first surface. The first axially extending portion comprises a first cylindrical side surface and a second side surface. The first cylindrical side surface is interconnected between the second side surface and the first surface. The first cylindrical side surface is coaxially aligned with a principal axis of the first central round portion and the second side surface is inclined relative to the principal axis of the central round portion.

Abstract: An exemplary optical lens assembly includes a first lens and a second lens. The first lens comprises a first central portion and a first annular stepped portion. The first annular stepped portion has a first outer step and a second outer step. The first outer step has a first outer side surface and a first downward-facing surface. The second outer step has a second outer side surface. The second lens comprises a second central portion and a second annular stepped portion. The second annular stepped portion has a first inner step and a second inner step. The first inner step has a first inner side surface and a first upward-facing surface. The second inner step has a second inner side surface. The first annular stepped portion is engaged in the second annular stepped portion. A gap exists between the second outer side surface and the first inner side surface.

Abstract: The invention provides a lens for an optical module adapted to be mounted in a lighting apparatus for a motor vehicle. The lens comprises two distinct materials associated with each other and having different refractive indices.

Abstract: A composite lens of the present invention has a base lens and a resin lens placed on the base lens. The resin lens has, in an area outside an optically effective diameter, a first surface, a second surface that is adjacent to the first surface, and a third surface that is adjacent to the second surface in sequence from an optical axis to an outer circumference. The first surface has an inclined surface that becomes higher from the outer circumference toward the optical axis, and the inclined surface is connected to the second surface. The second surface has a plane that is substantially perpendicular to the optical axis, and the substantially perpendicular plane is connected to the first plane. The third surface has an inclined surface that becomes lower from an inner circumference toward the outer circumference.

Abstract: An image sensor and a method for manufacturing the same that includes a dielectric layer having a trench formed therein, a first micro-lens having a first structure formed in the trench, and a second micro-lens having a second structure formed over and contacting the first micro-lens such that the second structure is different than the first structure.

Abstract: A transmitting optical element (33, 37) adapted for use in an objective for a microlithographic projection exposure apparatus is composed of a polycrystalline material (100), with the polycrystalline material (100) having crystallites (102) with a cubic crystal structure, and with the mean crystallite size of these crystallites (102) being at least (0.5) micrometers, and at most (100) micrometers.

Abstract: A lens is provided which is configured so that the dimensional accuracy of the lens surface can be evaluated easily and accurately, and the control of the accuracy of the lens can be easily performed. The lens comprises a lens effective part having lens surfaces formed around an optical axis as the center and an edge part in a doughnut shape as viewed in a plan view, which is extended along the outer periphery of the lens effective part. The edge part and the lens effective part are molded simultaneously, and annular indices around the optical axis as the center, with which the dimensional accuracy of the lens surfaces can be detected, are formed on both the surfaces of the edge part.

Abstract: A composite optical device 1 includes a first optical section 10 having an optical functional surface 11 and a second optical section 20 bonded to the first optical section 10 on the optical functional surface 11. The optical functional surface 11 includes a smooth part 13 and a concave-convex part 12 adjacent to each other, and is constructed so that a position P2, along a normal direction of the smooth part 13, of a concave bottom of the concave-convex part 12 can be closer to the center of the first optical section 10 than a position P1 along the normal direction of an end of the smooth part 13 on a side of the concave-convex part 12 in a boundary vicinity portion NR between the smooth part 13 and the concave-convex part 12.