Disclosed are a micro-lens structure, a displaying device, and a machining method of the micro-lens structure. The micro-lens structure specifically comprises: micro-lens units distributed in an array, wherein each micro-lens unit comprises at least two micro-lenses made of a photoresist, and the at least two micro-lenses have different arch heights.

Embodiments comprise a system created through fabricating a lens array through which lasers are emitted. The lens array may be fabricated in the semiconductor substrate used for fabricating the lasers or may be a separate substrate of other transparent material that would be aligned to the lasers. In some embodiments, more lenses may be produced than will eventually be used by the lasers. The inner portion of the substrate may be formed with the lenses that will be used for emitting lasers, and the outer portion of the substrate may be formed with lenses that will not be used for emitting lasers—rather, through etching these additional lenses, the inner lenses may be created with a higher quality.

A solid-state image sensor filter includes: a light-incident surface on which light is incident; an infrared filter located on a side of a photoelectric conversion element on which the light-incident surface is disposed; and a barrier layer located on a side of the infrared filter on which the light-incident surface is disposed, the barrier layer being provided to suppress transmission of an oxidation source to thereby prevent the infrared filter from being oxidized.

The present invention relates to a manufacturing method for a mid-infrared lens, which includes the following steps: placing a lens in the path of a far-infrared radiation source, enabling the lens to receive the far infrared rays; immersing the lens in a hardening liquid, causing the hardening liquid to coat the lens, wherein the hardening liquid is an intermixture of silicone and isopropanol or an intermixture of silicone and methanol, and a far-infrared material or a far-infrared composite material is additionally added to the hardening liquid; placing the lens coated with the hardening liquid in a drying space to dry, causing the hardening liquid to dry and harden and form a hardened layer on the surface of the lens. The temperature of the drying space lies between 80 and 120° C., and the drying time lies between 1 and 10 hours.

A method of manufacturing an optical element includes preparing a first transparent base having a d-line refractive index of 1.80 or more and a second transparent base having a d-line refractive index of 1.80 or more, coating an adhesive on the first transparent base and/or the second transparent base, the adhesive containing a photo-curable resin and a photopolymerization initiator having an absorption edge wavelength of 410 nm or more, and bonding the first transparent base and the second transparent base by irradiating the adhesive with light with a wavelength of 400 nm or more through the second transparent base to cure the adhesive.

A microlens array-based ultrathin microscope is provided. The microlens array-based ultrathin microscope includes a filter unit configured to selectively transmit fluorescence manifested in a measurement sample, and an image unit configured to acquire an image from light transmitted by the filter unit. The filter unit is formed to be in contact with or spaced apart from one surface of a transparent substrate, and the image unit includes a microlens array formed on an opposite surface to the transparent substrate in which the filter unit is formed, and an image sensor configured to collect image information of the microlens array.

A production method includes fixing ball elements of a semiconductor material to a carrier substrate by means of heat and pressure; and one-sided thinning of the ball elements fixed to the carrier substrate to form plano-convex lens elements of a semiconductor material.

A composite lens and a manufacturing method, and an infrared detector. The composite lens comprises a substrate (2); a lens (3) located on the first surface of the substrate (2); and a first metasurface structure array (1) that is provided on the second surface of the substrate (2) according to the surface type machining error of the lens (3), the first metasurface structure array (1) comprising a plurality of metasurface structure units. The first surface is opposite to the second surface. Because the lens (3) and the first metasurface structure array (1) are located on two different surfaces of the substrate (2), after the lens (3) is manufactured, the first metasurface structure array (1) can be set according to the surface type of the lens (3), so as to correct an aberration that is generated due to a surface type error when the lens (3) is machined; moreover, because the first metasurface structure array (1) can be set after the lens (3) is manufactured, the tolerance to a machining error is extremely high.

Disclosed in embodiments of the present disclosure are a lens array and a manufacturing method thereof. The manufacturing method for the lens array includes the following steps: depositing a first film layer on a first substrate, and manufacturing and forming a tapered structure array through a patterning process; and depositing a second film layer on the tapered structure array, thereby covering a top of a tapered structure, so as to form a lenticular structure array, wherein a top of a lenticular structure is a cambered surface. The lens array is manufactured by the above manufacturing method, wherein the lens array includes a plurality of lenses arranged in an array, and the arch heights of the plurality of lenses are the same and larger than or equal to a set value.

A device includes a light source, a waveguide layer, and a light director layer. The light source emits illumination light. The waveguide layer includes a cladding layer and an optical waveguide. The cladding layer provides a top planar surface of the waveguide layer and the optical waveguide is immersed in the cladding layer and includes a light input coupler. The light director layer includes a bottom planar surface that is disposed on the top planar surface of the waveguide layer. The light director layer also includes a light director that receives and directs the illumination light to the light input coupler as shaped light. The light director is configured to tilt the illumination light to give the shaped light a tilt angle with respect to the light input coupler.