A structured light module is combinable with a frame. The structured light module includes a housing, a light-emitting unit, at least one corresponding optical element, a circuit board, at least one fastening element, and at least one symbol. Due to the at least one symbol, the positioning accuracy of the structured light module in the assembling process is enhanced. The light-emitting unit is disposed on the circuit board and accommodated within the housing. The at least one fastening element is connected with one of the housing and the circuit board. When the at least one fastening element is combined with a frame, the structured light module is positioned on the frame.

An optical detecting device for detecting a nanoscale object, comprising: a microfluidic device, a microlens array, a light source and a light detecting element, wherein the microfluidic device comprises a top wall and a bottom wall arranged oppositely and a microfluidic channel between the top wall and the bottom wall; the microlens array is arranged on a surface of the bottom wall, and the bottom wall is made of an optically transparent material, and the light source is arranged on the surface of the bottom wall away from the microlens array aligned to the microlens array; the beam of the light source causes the formation of a photonic nanojet area in the microfluidic channel; the light detecting element receives light from the photonic nanojet area to detect the nanoscale object arranged in the photonic nanojet area.

An optical image capturing module includes a lens assembly and a circuit assembly including a carrier board, a circuit substrate and an image sensing component. The circuit substrate disposed on the carrier hoard has a hole and multiple circuit contacts. The image sensing component disposed on the carrier board is located in the hole, and has a sensing surface and multiple image contacts. Each image contact is electrically connected to circuit contacts via signal transmission elements. The lens assembly includes a lens group and a lens base disposed on the carrier board or the circuit substrate. The lens base has a receiving hole penetrating through two ends thereof, thereby the lens base is hollow. The image sensing component directly faces the receiving hole. The lens group includes at least two lenses having refractive power, and is disposed on the lens base and is located in the receiving hole.

A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three protrusion portions extending from an inner face of the first opening toward a center of the first opening and configured to be contactable with the spherical face portion.

A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three plate members disposed on the objective lens side with respect to the first opening. Each of the three plate members is provided with a protrusion portion capable of contacting the spherical face portion.

A microscope lens system includes a body having a surface, a microlens, and an aperture positioned between the microlens and the surface. In the embodiment, the body is configured to position a mobile device on the surface such that a camera lens of the mobile device is aligned with the aperture.

A system includes a dome-shaped optical component having a substantially circular edge and a mounting base for the optical component. A recess is in an outer surface of the optical component. A projection on an inner surface of the mounting base and is configured to engage the recess. An adhesive material is between the optical component and the mounting base. The adhesive material forms an upper band and a lower band with a void between the upper band and the lower band. The void is positioned relative to the recess in the outer surface of the optical component such that a bending stress in the optical component at the recess is less than what the bending stress would be without the void. A heater is inside and thermally coupled to the optical component.

A light emitting device (1) adapted for projecting a light beam (15) onto a target surface, the light emitting device (1) comprising a light engine (2) comprising a light source (3), a light mixing chamber (4), and an optical component (5) having a spherical shape with a curved light-receiving surface (51), where the light source (3) is arranged to, in operation, emit light towards a light exit window (41) of the at least one light mixing 5 chamber, the light exit window (41) of the at least one light mixing chamber (4) thereby acting as an extended light source with a curved light-emitting surface, where the optical component (5) is provided adjacent to the light exit window (41) of the light mixing chamber, and where the curved light emitting surface of the at least one light mixing chamber (4) is conformal to an the curved light-receiving surface (51) of the optical component (5) and 10 coincident with a focal surface (52) of the optical component (5).

A lens structure formed by materials in different refractive indexes includes a sphere, a first lens and a separation layer which is disposed between the sphere and the first lens. The sphere and the first lens have a different refractive index and the sphere is a round ball. The first lens is formed on the sphere that part of the sphere is exposed out of the first lens, and the first lens includes a first light absorption curve. The separation layer includes a transparent section opposite to the first light absorption curve. When a light beam passes through the second portion of the sphere to form a first light condensing effect and enter the sphere, the light beam will then pass through the transparent section to enter the first lens, forming a second light condensing effect after passing through the first light absorption curve.

A lens structure formed by materials in different refractive indexes includes a transparent sphere in a first refractive index as well as a transparent second lens in a second refractive index. The first refractive index is different from the second refractive index, and the sphere is a round ball formed by a first portion and a second portion which are equipped with a first light condensing effect. The first lens is formed on the first portion of the sphere, the second portion of the sphere is exposed out of the first lens, and the first lens is provided with a first light absorption curve opposite to the first portion of the sphere, so that a light beam can pass through the second portion of the sphere to form the first light condensing effect, and then pass through the first light absorption curve to form a second light condensing effect.