In a method of manufacturing an achromatic lens according to an embodiment of the present disclosure, the achromatic lens in which a first lens and a second lens are integrally molded is manufactured by using mold processing, so that chromatic aberration correction ability may be improved without using an adhesive or a separate instrument to fix the first lens and the second lens to each other.

A lens unit may include a plurality of lenses; and a cylindrical holder. The plurality of lenses may include a cemented lens having a second lens element bonded to a first lens element with an adhesive layer interposed therebetween. The first lens element may be a plastic lens having a convex lens surface and a first flange unit at an outer peripheral side. The second lens element may be a plastic lens having a concave lens surface bonded by the adhesive layer onto the convex lens surface of the first lens element and a second flange unit at an outer peripheral side. One of the first and second lens elements may be in contact with the holder, and the may not be in contact with the holder. The first and second cemented lens elements may include an optical axial direction abutment surface and a radial direction abutment surface.

An imaging lens assembly includes a dual molded optical element, a plurality of imaging lens elements and a light blocking element. The dual molded optical element has an object-side surface and an image-side surface and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective section. The light absorbing portion is located on at least one of the object-side surface and the image-side surface of the dual molded optical element, and a plastic material of the light absorbing portion and a plastic material of the light transmitting portion are different colors. The imaging lens elements are disposed in the inner space of the imaging lens assembly. The light blocking element is disposed adjacent to the light transmitting portion of the dual molded optical element.

Light-absorbing flange lenses that may be used in the lens stacks of compact lens systems. In a light-absorbing flange lens, the effective area of the lens is composed of a transparent optical material, and at least a portion of the flange of the lens is composed of an optical material that absorbs at least a portion of the light that enters the flange. Using light-absorbing flange lenses may allow the lens barrel to be eliminated from the lens system, thus reducing the X-Y dimensions of the lens system when compared to conventional compact lens systems that include a lens stack enclosed in a lens barrel. In addition, using a light-absorbing material in the flanges of the light-absorbing flange lenses may reduce or eliminate optical aberrations such as lens flare, haze, and ghosting in images.

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.

An improved lens unit can be used in an in-vehicle camera or the like, in a condition where a forefront lens is exposed to the outside for a long time. Here, the resin lens within the lens unit has an improved durability at a high temperature. The lens unit has a plurality of lenses arranged side by side with the optical axes thereof aligned with each other. The lenses include glass lens and resin lens. The lens closest to the object is a glass lens which is closest to the object side and is coated with an ultra-hard film. Resin lenses each have a high temperature resistant reflection preventing film. The lens is a combined lens in which a lens and a lens are bonded together, and is then covered with a high temperature resistant reflection preventing film after bonding.

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 with 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 dyeing a lens, and a method of manufacturing a lens assembly is provided. The method includes an operation of dipping the lens in a dyeing solution containing a non-polar dye.

Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element disposed between layers of the lens. Joints between the holographic optical element and the lens layers on an edge of the lens are covered with a sealant to protect the holographic optical element.

The invention relates to a method for manufacturing an ophthalmic lens having at least one optical function, comprising the step of providing a starting optical system of the lens, having a basic optical function and the step of additively manufacturing an additional optical element of the lens, by deposition of multiple predetermined bulking components made of at least one material having a predetermined refractive index, directly onto the front surface and/or the rear surface of the starting optical system; wherein the additive manufacturing step comprises the step of determining a manufacturing guideline for the additional optical element on the basis of the characteristics of said at least one optical function to be provided to the lens, the characteristics of said at least one basic optical function, the geometric characteristics of the starting optical system, and the predetermined refractive index of the material.