The present invention relates to dichromic mirrored patterns on fashion eyewear that exhibits variable opacity on the exterior of a photochromic lens in response to changing lighting conditions wherein the pattern can go from virtually transparent to opaque. The dichromic mirror pattern(s) can be coated in multi-color pattern sections and can be coated so that some pattern sections ave variable opacity and other pattern sections have a fixed high opacity. The effect can also be produced on an optical film to be applied to many optical surfaces.

In some implementations, an optical interference filter includes a substrate; and a set of layers that are disposed on the substrate. The set of layers includes a first subset of layers, wherein the first subset of layers comprises an aluminum nitride (AlN) material; and a second subset of layers, wherein the second subset of layers comprises a hydrogenated silicon (Si:H) material.

In some implementations, an optical interference filter includes a substrate; and a set of layers that are disposed on the substrate. The set of layers includes a first subset of layers, wherein the first subset of layers comprises an aluminum nitride (AlN) material, and wherein a stress of the first subset of layers is between −1000 and 800 megapascals; and a second subset of layers, wherein the second subset of layers comprises at least one other material.

An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.

At a motherboard for an image device, which is used for manufacturing an image device such as a liquid crystal device, an organic electroluminescence device, a mirror device, and an image-capturing device, a mark for alignment is provided on an outer side of a pixel area in which a plurality of pixels are arranged. In the photo-lithography process, a light exposure mask is arranged by using the mark as a reference position. For the mark, a recessed portion provided in a motherboard main body is filled with a filling film. The recessed portion includes a first groove extending along a first direction and a second groove extending along a second direction intersecting with the first direction, the second groove not intersecting with the first groove in plan view.

Disclosed are a light receiving module and a light detection and ranging (LIDAR) including the same. The light receiving module according to one embodiment of the present disclosure includes a receiving lens configured to receive external light, a reflective mirror configured to selectively reflect some of the light received by the receiving lens, and a detector configured to detect the light reflected by the reflective mirror, wherein the reflective mirror includes a mirror body having a first surface on a side on which the light received by the receiving lens is incident and a second surface on an opposite side of the first surface, a reflective layer provided on the first surface to reflect light in a designed wavelength region selected according to a predetermined criterion among the light received by the receiving lens, and to transmit light in a noise wavelength region other than the designed wavelength region, and a transmissive layer provided on the second surface so that the light in the noise wavelength region that has passed through the mirror body is transmitted.

An angle selective filter for a light projection system including a wavelength conversion material illuminated by an excitation light source in a first wavelength range, the wavelength conversion material re-emitting light in a second wavelength range after excitation by the light in the first wavelength range. The filter is configured to have a first average transmission which is high for light in the first wavelength range and for angles of incidence in the range [γ.sub.1,γ.sub.2], in a third wavelength range, the filter is configured to have a second average transmission which is high for light having an incidence angle in the range [β.sub.1,β.sub.2], and a third average reflectivity which is high for light having an incidence angle in the range [β.sub.2,β.sub.3], after reflection on the wavelength conversion material.

Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images.

A sensor system includes a plurality of optical sensors implemented in a pixel layer of an integrated circuit and a plurality of sets of optical filters implemented proximal to the pixel layer in a plurality of alternating filter layers. An optical filter of a set of optical filters includes a plurality of filter components implemented in a stack and is configured to pass a respective target wavelength range of light to one or more optical sensors of the plurality of optical sensors. One or more filter components of the plurality of filter components in a filter layer of the plurality of filter layers is common to a plurality of optical filters of a set of optical filters.

A filter and a miniature spectrum measuring device are provided. The filter includes a plurality of film structures. Each of the film structures includes an H-type structural film, an L-type structural film, and a cavity film disposed between the H-type structural film and the L-type structural film.