A projection optical system has a first optical system and a second optical system. The first and second optical systems are disposed in order from a demagnification side toward a magnification side. An intermediate image is formed between a demagnification-side imaging surface and a magnification-side imaging surface. The second optical system is an optical element having a first transmission surface, reflecting surface, and second transmission surface in order from the demagnification side toward the magnification side. The first transmission surface and reflecting surface are located at one side, and the second transmission surface is located at the other side with respect to the optical axis. The reflecting surface has a concavely curved surface shape. The second transmission surface has a convexly curved surface shape protruding toward the magnification side. The optical element has a first member and a second member different in refractive index.

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.

A composite optical element comprises a first base member, an optical resin layer, a bonding layer, and a second base member which are sequentially laminated such that the optical resin layer and the bonding layer are sandwiched between light entering/exiting surfaces of the first base member and the second base member. The thickness of the bonding layer changes along a straight line extending from the center toward the outer periphery of the bonding layer. Specifically, the thickness along the straight line is greater at an intermediate position between a first position and a second position than either of the thicknesses at the first position and at the second position. The first position is apart from the center by 0.8 times of half the diameter of the optical resin layer, and the second position corresponds to the outer periphery of the bonding layer.

A lens assembly and a method of making the assembly are described. The lens assembly includes a first lens and a second lens slidably coupled with the first lens. The second lens includes a silicone material and has a Fresnel pattern surface. Also described is a display device including the lens assembly and an array of light emitting devices coupled with the lens assembly for outputting light through the lens assembly.

According to an embodiment, a method of producing a lens unit in which lens unit is formed by curing a light-transmitting resin and includes a plurality of lens portions includes: forming, by resin, a first lens portion including a first lens surface and a second lens surface; forming, by resin integrally with first lens portion, a cylindrical support portion extending in a direction parallel to an optical axis direction of first lens portion; forming, by resin integrally with support portion, a second lens portion including a third lens surface facing second lens surface and a fourth lens surface, and having an optical axis coinciding with optical axis of first lens portion; and forming a diffraction grating integrally when any one or more of first lens surface, second lens surface, third lens surface, and fourth lens surface is formed.

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 method of forming a compound lens includes molding multiple lens elements to form a compound lens. The multiple lens elements are molded from polymers that provide each lens element with the desired optical properties. First and second lens elements formed from a first polymer can be molded around a central, third element formed from a second polymer that differs from the first polymer by the addition of a cyclic substituent group. During curing of the lens elements, cross-links are formed between the first and second polymers to form an molded, integrally formed compound lens.

A spectacle lens contains, starting from the object-sided front surface of the spectacle lens to the opposite rear-side of the spectacle lens, at least a) one component A including an ultrathin glass, b) one component B including at least one polymer material and/or at least one mineral glass, c) one component C, including at least one functional layer and/or an ultra-thin glass. A method for producing such a spectacle lens is also disclosed.

The present invention relates to a method for manufacturing an optical element (100) having at least one functional region using a 3D-printer, comprising the steps: forming a three-dimensional structure (50) of the optical element (100) using a 3D-printer such that the three-dimensional structure (100) has at least one microfluidic cavity (4) for receiving a functional substance (6); and filling the at least one microfluidic cavity (4) with the functional substance (6) for forming the at least one functional region. In addition, the invention relates to a device for manufacturing an optical element (100) as well as a use of the device.

There is provided a stacked lens structure including a first lens substrate having a first through-hole and a second lens substrate having a second-through hole. The first lens substrate may be directly bonded to the second lens substrate. The stacked lens structure may include lens resin portions, where each lens resin portion includes a lens portion configured to refract light, and a support portion configured to support the lens portion at a corresponding lens substrate, the support portion including a first portion at a side of the lens substrate, a second portion, and a third portion, where the first portion is between the lens substrate and the second portion in a cross-section view, and the third portion is between the second portion and the lens portion in the cross-section view.