Abstract: A lens includes an optical portion refracting light, a rib extending along a circumference of at least a portion of the optical portion, a first area and a second area of an object-side surface of the rib, wherein the first area has a first surface roughness and the second area has a second surface roughness less rough than the first surface roughness, and a third area and a fourth area of an image-side surface of the rib, wherein the third area has a third surface roughness and the fourth area has a fourth surface roughness less rough than the third surface roughness, wherein the second area includes inclined surfaces.

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 arranged in numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system and each having a refractive power, wherein an entire field of view of the optical imaging system is 50° or greater, and TTL/f<1.0, where TTL is a distance from an object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system.

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: A lens assembly includes a lens including an optical portion refracting light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel accommodating the lens. The lens includes a first D-cut portion on one side surface of the flange portion spaced apart from the lens barrel and a second D-cut portion on another side surface of the flange portion spaced apart from the lens barrel, wherein the first D-cut portion and the second D-cut portion each include first inclined surfaces, and the first inclined surfaces are spaced apart from respective ends of the first D-cut portion and the second D-cut portion by a predetermined interval.

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: A lens includes an optical portion refracting light, a rib extending along a circumference of at least a portion of the optical portion, a first area and a second area of an object-side surface of the rib, wherein the first area has a first surface roughness and the second area has a second surface roughness less rough than the first surface roughness, and a third area and a fourth area of an image-side surface of the rib, wherein the third area has a third surface roughness and the fourth area has a fourth surface roughness less rough than the third surface roughness, wherein the second area includes inclined surfaces.

Abstract: A lens assembly includes a lens including an optical portion refracting light and a flange portion extending along a portion of a circumference of the optical portion, a blocking member disposed in front of the lens and having an opening to allow light to be incident on the lens, and a lens barrel accommodating the lens. The optical portion is noncircular and a portion of the blocking member facing the optical portion in an optical axis direction is located to be higher than a portion of the blocking member facing the flange portion in the optical axis direction.

Abstract: A lens assembly includes a lens including an optical portion refracting light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel accommodating the lens. The lens includes a first D-cut portion on one side surface of the flange portion spaced apart from the lens barrel and a second D-cut portion on another side surface of the flange portion spaced apart from the lens barrel, wherein the first D-cut portion and the second D-cut portion each include first inclined surfaces, and the first inclined surfaces are spaced apart from respective ends of the first D-cut portion and the second D-cut portion by a predetermined interval.

Abstract: A lens assembly includes a lens including an optical portion to refract light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel to accommodate the lens. The flange portion has a non-circular shape and includes a first di-cut portion on a first side surface of the flange portion, a second di-cut portion on a second side surface of the flange portion, and arc portions connecting the first di-cut portion and the second di-cut portion. A first distance between the first di-cut portion and an optical axis of the lens and a second distance between the second di-cut portion and the optical axis of the lens are smaller than a distance between respective opposite ends of the arc portions and the optical axis.

Abstract: A lens assembly includes a lens including an optical portion refracting light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel accommodating the lens. The lens includes a first D-cut portion on one side surface of the flange portion spaced apart from the lens barrel and a second D-cut portion on another side surface of the flange portion spaced apart from the lens barrel, wherein the first D-cut portion and the second D-cut portion each include first inclined surfaces, and the first inclined surfaces are spaced apart from respective ends of the first D-cut portion and the second D-cut portion by a predetermined interval.

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 arranged in numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system and each having a refractive power, wherein an entire field of view of the optical imaging system is 50° or greater, and TTL/f<1.0, where TTL is a distance from an object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially arranged along an optical axis from an object side toward an image side. The fifth lens has positive refractive power, a focal length of the fifth lens is smaller than an overall focal length of the optical imaging system, and ?0.38?R10/f??0.32, where R10 is a radius of curvature of an image-side surface of the fifth lens and f is the overall focal length of the optical imaging system.

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 lens assembly includes a lens including an optical portion refracting light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel accommodating the lens. The lens includes a first D-cut portion on one side surface of the flange portion spaced apart from the lens barrel and a second D-cut portion on another side surface of the flange portion spaced apart from the lens barrel, wherein the first D-cut portion and the second D-cut portion each include first inclined surfaces, and the first inclined surfaces are spaced apart from respective ends of the first D-cut portion and the second D-cut portion by a predetermined interval.

Abstract: An optical imaging system includes a first lens which has refractive power, a second lens which has refractive power, a third lens which has a convex object-side surface, and an inflection point is formed on an image-side surface thereof, a fourth lens which has refractive power, a fifth lens which has a convex object-side surface, and a sixth lens which has refractive power and an inflection point is formed on an image-side surface thereof, and wherein the first to sixth lens are sequentially disposed from an object side.

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 from an object side. The third lens and the sixth lens have positive refractive power, and an f-number (F No.) of the optical imaging system is 1.7 or less.

Abstract: Provided is a substrate processing apparatus capable of improving thickness uniformity. The substrate processing apparatus includes a process chamber including a shower head, a feeding block including a tube to provide a source gas and a reaction gas to the shower head, and a mixing block configured to provide a channel connected between the shower head and the feeding block to mix the source gas and the reaction gas, and the mixing block includes an internal space having a cross-sectional area larger than the cross-sectional area of the tube provided in the feeding block, and a collision part provided on a path of a gas mixture of the source gas and the reaction gas to collide with the gas mixture.

Abstract: A lens assembly of a camera module mounted in a small portable device includes a body receiving at least one lens and having a hole at one side, a screw member inserted in the hole in a direction substantially parallel to an optical axis, a support boss provided at the other side of the body and including a coupling hole formed in a direction substantially parallel to the optical axis, and a guide groove formed at one side of a side surface of the support boss, a shaft coupled with the coupling hole of the support boss and guiding a movement of the body, and a guide member having one side elastically and tightly attached to the screw member and moved by rotation of the screw member, and the other side coupled with the shaft to be movable along the guide groove and moving the body along the optical axis.

Abstract: A lens assembly of a camera module mounted in a small portable device includes a body receiving at least one lens and having a hole at one side, a screw member inserted in the hole in a direction substantially parallel to an optical axis, a support boss provided at the other side of the body and including a coupling hole formed in a direction substantially parallel to the optical axis, and a guide groove formed at one side of a side surface of the support boss, a shaft coupled with the coupling hole of the support boss and guiding a movement of the body, and a guide member having one side elastically and tightly attached to the screw member and moved by rotation of the screw member, and the other side coupled with the shaft to be movable along the guide groove and moving the body along the optical axis.