Abstract: A lens assembly includes a lens having an optical portion and a flange portion at a periphery of the optical portion, a spacer having an incident hole through which light passes, and a lens barrel accommodating the lens and the spacer. The lens includes a first D-cut portion and a second D-cut portion formed on a side surface and another side surface of the flange portion in a state of non-contact with the lens barrel, and circular arc portions connecting the first and second D-cut portions to each other. The spacer includes blocking portions having a shape corresponding to a shape of the first and second D-cut portions, and first curved portions having a shape corresponding to a shape of the circular arc portions on an inner side surface, and transmission portions formed in locations in which the blocking portions and the first curved portions are connected to each other.

Abstract: A mobile device and lens module including a lens barrel and a plurality of lenses sequentially stacked from an object side to an image side in the lens barrel, wherein the plurality of lenses includes one or more D-cut lenses having respective straight line rim portions, and wherein a straight line portion of a D-cut lens, of the one or more D-cut lenses, overlaps an image sensor for imaging light passing through the plurality of lenses.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially disposed on an optical axis from an object side toward an image side. A distance from an object-side surface of the first lens to an imaging plane of an image sensor is TTL, an overall focal length of an optical system including the first to sixth lenses is F, and TTL/F?0.83. An optical axis distance between the second lens and the third lens is D23, an optical axis distance between the third lens and the fourth lens is D34, and 2.2<D23/D34<5.4.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.

Abstract: An optical imaging system includes: a first lens having a concave image-side surface; a second lens having refractive power; a third lens having a concave image-side surface; a fourth lens having a concave object-side surface or a convex image-side surface; a fifth lens having refractive power; a sixth lens having a concave image-side surface; and a seventh lens having negative refractive power. The first to seventh lenses are sequentially disposed from an object side and 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens.

Abstract: A lens module having lenses disposed in a lens barrel; and a spacer disposed between two of the lenses comprising a light shielding hole configured to adjust an amount of light incident therethrough, and the spacer is coupled to at least one of the two lenses.

Abstract: A lens module having lenses disposed in a lens barrel; and a spacer disposed between two of the lenses comprising a light shielding hole configured to adjust an amount of light incident therethrough, and the spacer is coupled to at least one of the two lenses.