Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens with a refractive power respectively; a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.0?CT4/CT3<1.5; and a spacing distance T34 between the third lens and the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy 4.0<T34/T45<15.5.

Abstract: A head-mounted viewable device which includes a display configured to display and project a virtual scene image to a user's eye, a VR optical lens configured to construct an optical path between the display and the user's eye for allowing a virtual scene image being observed by the user's eye, and, an eye-tracking system configured to detect a sight direction of the user's eye and adjust a display position of the virtual scene image based on the detected sight direction. The eye-tracking system includes at least one light source configured to project the detection light and a receiving module configured to receive the reflected detection light reflected to determine the sight direction of the user's eye. The receiving module is positioned at a side of the VR optical lens and arranged to face towards the user's eye such that the detection light reflected by the user's eye is directly received by the receiving module.

Abstract: The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens having a negative refractive power, and an image-side surface thereof being concave; a second lens having a refractive power; a third lens having a positive refractive power, and an object-side surface thereof being convex and an image-side surface thereof being convex; a fourth lens having a negative refractive power; a fifth lens having a refractive power, and an image-side surface thereof being convex; and a sixth lens having a refractive power, wherein half of a maximum field-of-view Semi-FOV of the optical imaging system satisfies Semi-FOV>60°; and a maximum effective radius DT12 of the image-side surface of the first lens and a maximum effective radius DT62 of an image-side surface of the sixth lens satisfy 0.5<DT12/DT62<1.

Abstract: An optical imaging lens assembly includes, sequentially along an optical axis from an object side to an image side: a first lens, having a negative refractive power, an image-side surface of the first lens being a concave surface; a second lens, having a positive refractive power, an object-side surface of the second lens being a convex surface; and a third lens, having a refractive power, an object-side surface of the third lens being a convex surface. A Half of a diagonal length ImgH of an effective pixel area on an image plane of the optical imaging lens assembly, an effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy: 3 mm<ImgH×f/EPD<4 mm. A maximal field-of-view FOV of the optical imaging lens assembly and the effective focal length f of the optical imaging lens assembly satisfy: 1 mm<tan(FOV/2)×f<2 mm.

Abstract: The present disclosure provides an optical imaging lens assembly, comprising, sequentially along an optical axis from an object side to an image side: a first lens, having a negative refractive power, an object-side surface of the first lens being a concave surface; a second lens, having a positive refractive power, an image-side surface of the second lens being a convex surface; and a third lens, having a refractive power, an image-side surface of the third lens being a concave surface. An effective focal length f1 of the first lens and an effective focal length f of the optical imaging lens assembly satisfy: ?4<f1/f<?2. A maximal field-of-view FOV of the optical imaging lens assembly and the effective focal length f of the optical imaging lens assembly satisfy: 1 mm<tan(FOV/2)×f<2 mm.

Abstract: A head-mounted viewable device which includes a display configured to display and project a virtual scene image to a user's eye, a VR optical lens configured to construct an optical path between the display and the user's eye for allowing a virtual scene image being observed by the user's eye, and, an eye-tracking system configured to detect a sight direction of the user's eye and adjust a display position of the virtual scene image based on the detected sight direction. The eye-tracking system includes at least one light source configured to project the detection light and a receiving module configured to receive the reflected detection light reflected to determine the sight direction of the user's eye. The receiving module is positioned at a side of the VR optical lens and arranged to face towards the user's eye such that the detection light reflected by the user's eye is directly received by the receiving module.

Abstract: The present disclosure discloses an optical imaging system, along an optical axis from an object side to an image side, sequentially includes: a first lens having negative refractive power; a second lens having positive refractive power, and an object-side surface of the second lens being a convex surface; a third lens having refractive power; and a fourth lens having refractive power, and an object-side surface of the fourth lens being a concave surface. A total effective focal length f of the optical imaging system and half of a maximum field-of-view Semi-FOV of the optical imaging system satisfy: f×tan(Semi-FOV)?4.0 mm; and the total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system satisfy: f/EPD<2.35.

Abstract: A head-mounted viewable device includes a display configured to display and project a virtual scene image to a user's eye, a VR optical lens configured to construct an optical path between the display and the user's eye for allowing a virtual scene image being observed by the user's eye, and an eye-tracking system configured to detect a sight direction of the user's eye and adjust a display position of the virtual scene image based on the detected sight direction. The eye-tracking system includes at least one light source configured to project the detection light and a receiving module configured to receive the reflected detection light reflected to determine the sight direction of the user's eye. The receiving module is positioned at a side of the VR optical lens and arranged to face towards the user's eye such that the detection light reflected by the user's eye is directly received by the receiving module.

Abstract: Embodiments of the present disclosure provide an optical imaging lens assembly that comprising, sequentially from an object side to an image side of the optical imaging lens assembly along an optical axis: a first lens having a negative refractive power, an object side surface of the first lens is convex surface and an image side surface of the first lens is a concave surface; a stop; a second lens having a positive refractive power, an object side surface of the second lens is a concave surface and an image side surface of the second lens is a convex surface; a third lens having a refractive power; a fourth lens having a refractive power, an object side surface of the fourth lens is a concave surface and an image side surface of the fourth lens is a convex surface. A relative illuminance RI corresponding to a maximal field-of-view of the optical imaging lens assembly satisfies: RI?50%; and at least one of the first lens to the fifth lens is a lens made of plastic material.

Abstract: The present disclosure discloses a projection lens assembly. The projection lens assembly includes, sequentially along an optical axis from an image side to a source side, a first lens, a second lens, a third lens, and a fourth lens. The first lens has a positive refractive power, and an image-side surface of the first lens is a convex surface. The second lens has a positive refractive power or a negative refractive power, and a source-side surface of the second lens is a convex surface. The third lens has a positive refractive power. The fourth lens has a positive refractive power or a negative refractive power.

Abstract: The disclosure provide an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens having a negative refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; and a sixth lens having a positive refractive power; wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, ImgH satisfies: ImgH>5 mm; and Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, Semi-FOV satisfies: tan (Semi-FOV)>1.2, which makes the optical imaging lens assembly have features of a large image surface, a large wide angle, etc.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens with a refractive power respectively; a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.0?CT4/CT3<1.5; and a spacing distance T34 between the third lens and the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy 4.0<T34/T45<15.5.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis: a first lens with a refractive power, an object-side surface thereof being a convex surface; a second lens with a refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power; a fifth lens with a refractive power; a sixth lens with a negative refractive power; and a seventh lens with a negative refractive power, wherein a maximum field of view (FOV) of the optical imaging lens assembly satisfies 105°<FOV<125°.

Abstract: A head-mounted viewable device includes a display configured to display and project a virtual scene image to a user's eye, a VR optical lens configured to construct an optical path between the display and the user's eye for allowing a virtual scene image being observed by the user's eye, and an eye-tracking system configured to detect a sight direction of the user's eye and adjust a display position of the virtual scene image based on the detected sight direction. The eye-tracking system includes at least one light source configured to project the detection light and a receiving module configured to receive the reflected detection light reflected to determine the sight direction of the user's eye. The receiving module is positioned at a side of the VR optical lens and arranged to face towards the user's eye such that the detection light reflected by the user's eye is directly received by the receiving module.

Abstract: The present disclosure discloses an optical imaging lens assembly. The lens assembly sequentially includes, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, and a fourth lens. The first lens has a positive refractive power, and a convex object-side surface; the second lens has a positive refractive power or a negative refractive power, and a concave object-side surface and a convex image-side surface; the third lens has a positive refractive power, a concave object-side surface, and a convex image-side surface; and the fourth lens has a positive refractive power or a negative refractive power. An effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens assembly satisfy: 1.2<f1/f<1.8.

Abstract: Methods, systems, and devices for fast partial scalarization are described. A device may generate a representation of a set of vectors and a set of vector instructions associated with the set of vectors. The device may determine information associated with a vector in the set of vectors based on the representation, the information including an indication of splitting the vector and splitting one or more vector instructions associated with the vector. In some aspects, the device may associate the vector to one or more other vectors in the set of vectors based on one or more vector instructions related to the set of vectors. The device may update the information based on the associating and generate partially scalarized instructions based on the updating. The device may generate the partially scalarized instructions by excluding a subset of vector instructions and generating additional subsets of vector instructions and scalar instructions.

Abstract: The present disclosure provides a TO-CAN cap. The TO-CAN cap includes a casing, the casing has a hollow cylindrical structure, and an inner wall of the casing has a protrusion portion at a first end portion in an axial direction of the casing; and an optical lens, the optical lens has an optical portion for refracting light and a rib portion at a periphery of the optical portion, a side surface of the rib portion having a concave portion complementary to the protrusion portion, where the casing and the optical lens are connected to each other through the protrusion portion and the concave portion.

Abstract: An eyepiece and a display device are provided. The eyepiece includes: a lens component, the lens component including at least two lenses which are a first lens and a second lens; a reflective linear polarizer, arranged on a surface of the first lens or arranged on a surface of the second lens; a reflective circular polarizer, arranged on a surface of the first lens, the reflective circular polarizer being arranged on a side, far away from the image source, of the reflective linear polarizer; and a ¼? wave plate, arranged between the reflective linear polarizer and the reflective circular polarizer, the first lens having a positive refractive power or a negative refractive power, the second lens having a negative refractive power, an Abbe number Vd1 of material of the first lens being greater than and an Abbe number Vd2 of material of the second lens being less than 30.

Abstract: The present disclosure provides an ocular assembly. The ocular assembly including sequentially along an optical axis from an object side to an image side: a first lens with a positive refractive power has a convex object-side surface, and a second lens has a concave image-side surface, wherein at least one of the object-side surface of the first lens, an image-side surface of the first lens, an object-side surface of the second lens, and an image-side surface of the second lens is a Fresnel structure surface, wherein half of a maximal field-of-view HFOV of the ocular assembly satisfies: HFOV>40°, an axial distance TTL of the object-side surface of the first lens to the image plane and a total effective focal length f of the ocular assembly satisfy 1<TTL/f<1.5.

Abstract: The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens having a negative refractive power, and an image-side surface thereof being concave; a second lens having a refractive power; a third lens having a positive refractive power, and an object-side surface thereof being convex and an image-side surface thereof being convex; a fourth lens having a negative refractive power; a fifth lens having a refractive power, and an image-side surface thereof being convex; and a sixth lens having a refractive power, wherein half of a maximum field-of-view Semi-FOV of the optical imaging system satisfies Semi-FOV>60°; and a maximum effective radius DT12 of the image-side surface of the first lens and a maximum effective radius DT62 of an image-side surface of the sixth lens satisfy 0.5<DT12/DT62<1.