Abstract: An imaging lens includes a light blocking sheet that includes an inner ring surface, a plurality of tapered light blocking structures, and a nanostructure layer. The inner ring surface surrounds an optical axis and defines a light passage opening. The tapered light blocking structures are disposed on the inner ring surface, and each tapered light blocking structure protrudes from the inner ring surface and tapers off towards the optical axis. The tapered light blocking structures are periodically arranged to surround the optical axis. The contour of each tapered light blocking structure has a curved part in a view along the optical axis. The curved part forms a curved surface on the inner ring surface. The nanostructure layer is disposed on the curved surface and has a plurality of ridge-like protrusions that extend non-directionally, and the average structure height of the nanostructure layer ranges from 98 nanometers to 350 nanometers.

Abstract: An imaging lens assembly includes a plurality of lens elements, a light path folding element and a sheet-like light blocking element. An optical axis is defined via the lens elements. The light path folding element includes an optical surface, and a total reflection of an imaging light of the imaging lens assembly occurs at least once on the optical surface. The sheet-like light blocking element is corresponding to the light path folding element, and the sheet-like light blocking element includes a first surface, a second surface and a microstructure layer. The first surface faces towards the optical surface. The second surface is disposed relatively to the first surface. The microstructure layer is at least disposed on the first surface, and protrusions are formed on the first surface via the microstructure layer. At least partial area between the microstructure layer and the optical surface has an air slit.

Abstract: An imaging lens includes a light blocking sheet that includes an inner ring surface, a plurality of tapered light blocking structures, and a nanostructure layer. The inner ring surface surrounds an optical axis and defines a light passage opening. The tapered light blocking structures are disposed on the inner ring surface, and each tapered light blocking structure protrudes from the inner ring surface and tapers off towards the optical axis. The tapered light blocking structures are periodically arranged to surround the optical axis. The contour of each tapered light blocking structure has a curved part in a view along the optical axis. The curved part forms a curved surface on the inner ring surface. The nanostructure layer is disposed on the curved surface and has a plurality of ridge-like protrusions that extend non-directionally, and the average structure height of the nanostructure layer ranges from 98 nanometers to 350 nanometers.

Abstract: An imaging lens assembly module includes an imaging lens assembly, a light path folding element and a plastic assembling element. The imaging lens assembly includes an optical lens element. The light path folding element has a light incident surface, a light exiting surface and an optical reflecting surface. The plastic assembling element includes an assembling surface, a first surface and a second surface. The assembling surface is physically contacted with the light path folding element. Both the first surface and the second surface are disposed towards the light path folding element, and the second surface and the first surface are disposed adjacent to each other. The second surface and the optical reflecting surface are correspondingly disposed. The second surface includes a protruding structure array, and the protruding structure array includes at least seven protruding structures arranged at equal intervals.

Abstract: An optical imaging module includes an imaging lens assembly, an optical path folding element, and a light-blocking element. The imaging lens assembly includes at least one optical lens element. The optical path folding element is disposed at an image side of the imaging lens assembly, and the optical path folding element has a light incident surface, a light exiting surface, and at least one optical reflective surface. The light-blocking element is disposed opposite to the at least one optical reflective surface, and the light-blocking element includes an interval area that maintains a distance from the optical path folding element. The at least one optical reflective surface is an optical total reflection surface configured to totally internally reflect imaging light of the optical imaging module in the optical path folding element. The interval area of the light-blocking element and the optical total reflection surface form an air slit therebetween.

Abstract: An optical imaging module includes an optical imaging lens assembly, a light path folding element and a light blocking element. The optical imaging lens assembly includes at least one optical lens element, and an optical axis passes through the optical lens element. The light path folding element has an incident surface, an emitting surface and at least one optical reflecting surface, and the light path folding element is disposed on an image side of the optical imaging lens assembly. The light blocking element is disposed on at least one of the optical lens element and the light path folding element, and includes an opening hole and a light blocking surface. The light blocking surface has a plurality of first anti-reflective structures, and each of the first anti-reflective structures is recessed from the light blocking surface toward a direction away from the light path folding element.

Abstract: An optical imaging module includes an optical imaging lens assembly, a light path folding element and a light blocking element. The optical imaging lens assembly includes at least one optical lens element. The light path folding element has an incident surface, an emitting surface and at least one optical reflecting surface, and the light path folding element is disposed on an image side of the optical imaging lens assembly. The light blocking element is disposed on one of the optical lens element and the light path folding element, and the light blocking element includes an opening hole and a light blocking surface. The light blocking surface has an anti-reflective light blocking membrane layer. A surface of the anti-reflective light blocking membrane layer has a plurality of nanostructures, and the nanostructures are arranged in an irregular form.

Abstract: An optical imaging module includes an optical imaging lens assembly, a light path folding element and a light blocking element. The optical imaging lens assembly includes at least one optical lens element, and an optical axis passes through the optical lens element. The light path folding element has an incident surface, an emitting surface and at least one optical reflecting surface, and the light path folding element is disposed on an image side of the optical imaging lens assembly. The light blocking element is disposed on at least one of the optical lens element and the light path folding element, and includes an opening hole and a light blocking surface. The light blocking surface has a plurality of first anti-reflective structures, and each of the first anti-reflective structures is recessed from the light blocking surface toward a direction away from the light path folding element.

Abstract: An optical imaging module includes an optical imaging lens assembly, a light path folding element and a light blocking element. The optical imaging lens assembly includes at least one optical lens element. The light path folding element has an incident surface, an emitting surface and at least one optical reflecting surface, and the light path folding element is disposed on an image side of the optical imaging lens assembly. The light blocking element is disposed on one of the optical lens element and the light path folding element, and the light blocking element includes an opening hole and a light blocking surface. The light blocking surface has an anti-reflective light blocking membrane layer. A surface of the anti-reflective light blocking membrane layer has a plurality of nanostructures, and the nanostructures are arranged in an irregular form.

Abstract: A light path folding element includes a first surface, a second surface, a first reflecting surface and a second reflecting surface. A light travels from the first surface into the light path folding element. The second surface is disposed relative to the first surface along a first direction and is parallel to the first surface, and the first direction is perpendicular to the first surface. The first reflecting surface connects the first surface and the second surface, an acute angle is formed between the first reflecting surface and the first surface, and the light forms an internal reflection via the first reflecting surface. The light forms another internal reflection via the second reflecting surface. The light path folding element further includes a light blocking structure, which extends from at least one of the first surface and the second surface into the light path folding element.

Abstract: An imaging lens includes a light blocking sheet that includes an inner ring surface, a plurality of tapered light blocking structures, and a nanostructure layer. The inner ring surface surrounds an optical axis and defines a light passage opening. The tapered light blocking structures are disposed on the inner ring surface, and each tapered light blocking structure protrudes from the inner ring surface and tapers off towards the optical axis. The tapered light blocking structures are periodically arranged to surround the optical axis. The contour of each tapered light blocking structure has a curved part in a view along the optical axis. The curved part forms a curved surface on the inner ring surface. The nanostructure layer is disposed on the curved surface and has a plurality of ridge-like protrusions that extend non-directionally, and the average structure height of the nanostructure layer ranges from 98 nanometers to 350 nanometers.

Abstract: A light blocking sheet includes a first surface, a second surface, an inner annular surface and an outer annular surface. The second surface is corresponding to the first surface. The inner annular surface connects the first surface and the second surface, and forms an inner opening. The outer annular surface connects an edge of the first surface and an edge of the second surface, and includes at least three notches disposed on the outer annular surface and at least three arc surfaces located on the outer annular surface, wherein the at least three notches and the at least three arc surfaces are alternately arranged on the outer annular surface, and the at least three arc surfaces are coaxial and have different arc lengths.

Abstract: A light blocking sheet includes a first surface, a second surface, an inner annular surface and an outer annular surface. The second surface is corresponding to the first surface. The inner annular surface connects the first surface and the second surface, and forms an inner opening. The outer annular surface connects an edge of the first surface and an edge of the second surface, and includes at least three notches disposed on the outer annular surface and at least three arc surfaces located on the outer annular surface, wherein the at least three notches and the at least three arc surfaces are alternately arranged on the outer annular surface, and the at least three arc surfaces are coaxial and have different arc lengths.

Abstract: A light blocking sheet includes a first surface, a second surface, an inner annular surface and an outer annular surface. The second surface is corresponding to the first surface. The inner annular surface connects the first surface and the second surface, and forms an inner opening. The outer annular surface connects an edge of the first surface and an edge of the second surface, and includes at least three notches disposed on the outer annular surface and at least three arc surfaces located on the outer annular surface, wherein the at least three notches and the at least three arc surfaces are alternately arranged on the outer annular surface, and the at least three arc surfaces are coaxial and have different arc lengths.

Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.

Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.

Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.

Abstract: A light blocking sheet includes a first surface, a second surface, an inner annular surface and an outer annular surface. The second surface is corresponding to the first surface. The inner annular surface connects the first surface and the second surface, and forms an inner opening. The outer annular surface connects an edge of the first surface and an edge of the second surface, and includes at least three notches disposed on the outer annular surface and at least three arc surfaces located on the outer annular surface, wherein the at least three notches and the at least three arc surfaces are alternately arranged on the outer annular surface, and the at least three arc surfaces are coaxial and have different arc lengths.

Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.