A lens assembly is separated into a first lens module including at least one lens element and a second lens module including at least one other lens element during alignment of its lens elements. Coarse alignment is conducted by aligning an optical axis of at least one lens element within the first lens module with an optical axis of at least one lens element within the second lens module. For conducting fine alignment, an image sensor views a test chart while the first and second lens modules are positioned between the test chart and the image sensor. Image quality indices are obtained from the image sensor of the test chart at different relative alignments between the first and second lens modules, before the first lens module is fixed to the second lens module at a relative alignment therebetween where the image quality indices are optimized.

A method of fabricating a refractive optical element on a substrate may provide less expensive and more compact optics for an X-ray system. The method includes coating the substrate with a resin and providing radiation to a portion of the resin to cause two photon polymerization of the resin. The method further includes forming, by two photon polymerization, a first surface of a polymer refractive optical element from the resin. The first surface is disposed along an optical axis of the refractive optical element and the first surface has a roughness of less than 100 nanometers. Further, the method includes forming, by two photon polymerization, a second surface of the polymer refractive optical element. The second surface is disposed along the optical axis of the refractive optical element and the second surface has a roughness of less than 100 nanometers.

An optical element includes a first resin portion, a second resin portion provided in contact with the first resin portion, an adhesion portion, a first base material, and a second base material, the first resin portion, the second resin portion, and the adhesion portion being provided between the first base material and the second base material. The adhesion portion is in contact with the second resin portion and one of the first base material and the second base material. When an elastic modulus of the first resin portion is denoted by E1, an elastic modulus of the second resin portion is denoted by E2, and an elastic modulus of the adhesion portion is denoted by E3, the optical element satisfies a relationship of E3<E2<0.9×E1.

A method of making an integrated depth sensor window lens, such as for an augmented reality (AR) head set, the depth sensor window lens comprising a sensor lens and an illuminator lens separated by an opaque dam. The method uses a two-shot injection molding process, a first shot comprising an optically clear polymeric material to form the sensor lens and the illuminator lens and the second shot comprising an opaque polymeric material to form the separator of the two.

An annular optical component includes an inner surface, an outer surface, an object-side surface and an image-side surface. The inner surface includes multiple L-shaped annular grooves. The annular optical component includes multiple stripe-shaped structures disposed in the L-shaped annular grooves. The L-shaped annular grooves include an object-side L-shaped annular groove closest to the object-side surface and an image-side L-shaped annular groove closest to the image-side surface. A bottom diameter of the image-side L-shaped annular groove is larger than a bottom diameter of the object-side L-shaped annular groove. Each L-shaped annular groove includes a first side and a second side located between the object-side surface and the image-side surface. The stripe-shaped structures are disposed on the first side or the second side, and a degree of inclination between the first side and the central axis is larger than a degree of inclination between the second side and the central axis.

A vehicle trim assembly includes a trim component having an interior facing surface and an exterior facing surface opposite the interior facing surface, a lens assembly overmolded into the trim component, the lens assembly including an optical surface positioned adjacent to the exterior facing surface of the trim component, and a sensor module including a sensor housing enclosing a sensor, the sensor module joined to the trim component and the lens assembly.

A manufacturing method of an optical unit for endoscope includes: a process of crimping a bonding sheet including a curable resin film to a release substrate having a release surface which is an optical flat surface; a mirror-finishing process of performing a partial curing treatment on a predetermined region of the bonding sheet to process the predetermined region into an optical flat surface; a process of fabricating a laminated wafer by laminating a first element wafer including a first optical element and a second element wafer including a second optical element, with the bonding sheet being arranged between the first element wafer and the second element wafer; a curing process of performing a curing treatment on an uncured region of the bonding sheet; and a process of cutting the laminated wafer and segmenting the laminated wafer into optical units.

An optics wafer includes replicated optical elements such as lenses that can be formed without the use of a separate glass or other substrate on which the optical elements would otherwise need to be replicated or mounted.

One embodiment of the invention provides an optical lens including a first lens group with at least two lenses, a second lens group with at least two lenses, and a parting line located between the first lens group and the second lens group. Each of the lenses of the first and the second lens groups is associated with a respective distance, the respective distance is a distance value measured along an optical axis between two focal points of two end points of an image circle diameter formed at an image plane of the optical lens, under the condition that an optical center of one of the lenses is shifted a distance away from the optical axis. The two lenses with the two largest distance values among all lenses are disposed on the same side of the parting line.

A lens assembly includes a tube in which optical elements such as lenses or micro-lenses are individually fabricated by dispensing a volume of curable optical polymer into the tube, forming the desired shape for the optical element using one or more plungers having heads corresponding to a desired lensing curvature, applying radiant energy to the tube with the plungers in place to cure the optical polymer, and repeating as needed until the desired number of optical elements are fabricated within the lens assembly which may then be integrated as a single piece into a mobile or wearable device.