Abstract: An optical imaging lens includes a first lens element to an eighth lens element, and each lens element has an object-side surface and an image-side surface. An optical axis region of the image-side surface of the first lens element is concave, the third lens element has negative refracting power, and a periphery region of the object-side surface of the third lens element is concave, the sixth lens element has negative refracting power, and an optical axis region of the object-side surface of the sixth lens element is convex, the seventh lens element has positive refracting power, and a periphery region of the object-side surface of the seventh lens element is concave. Lens elements included by the optical imaging lens are only the eight lens elements mentioned above, and the optical imaging lens satisfies the following conditions: |V2?V3|?5.000, and D12/(G45+G67)?4.100.

Abstract: Systems, devices, and methods for side lobe control in holograms are described. The magnitude of the side lobes of a hologram depends on the distribution of refractive index modulation (?n), therefore control of side lobe magnitude may be achieved by controlling the distribution of ?n. The distribution of ?n may be controlled by replicating a hologram from a master with two reference beams, where the wavelength and angle of each reference beam, the playback angle of the master hologram, and the thickness of the master hologram, the copy holographic recording medium (HRM), and the recording substrate are carefully chosen to achieve a pattern of meta-interference within the HRM that matches the desired distribution of ?n.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element, and each lens element has an object-side surface and an image-side surface. The periphery region of the image-side surface of the first lens element is concave, the second lens element has negative refracting power, the periphery region of the image-side surface of the third lens element is convex, the fourth lens element has negative refracting power, the sixth lens element has positive refracting power, and the optical axis region of the image-side surface of the seventh lens element is concave. Lens element of the optical imaging lens are only the seven lens elements described above to satisfy the following conditions (G56+T6)/(G12+T2)?3.500 and ?6+?7?100.000.

Abstract: Systems and apparatus for managing stray light in augmented reality, mixed reality, enhanced reality, and similar applications.

Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially 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, a sixth lens, a seventh lens, and an eighth lens having refractive power. A center thickness CT6 of the sixth lens along the optical axis and a spaced interval T56 between the fifth lens and the sixth lens along the optical axis satisfy: 1.5<CT6/T56<2.6. A relative F number Fno of the optical imaging lens assembly satisfies: Fno?1.7.

Abstract: An optical imaging lens includes a first lens element to an eighth lens element, and each lens element has an object-side surface and an image-side surface. The first lens element has positive refracting power, an optical axis region of the image-side surface of the first lens element is concave, the second lens element has negative refracting power, a periphery region of the object-side surface of the second lens element is concave, and an optical axis region of the object-side surface of the eighth lens element is convex. The lens elements having refracting power included by the optical imaging lens are only the eight lens elements described above. The optical imaging lens satisfies the following conditions: D61t82/D21t42?1.750.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, which are sequentially arranged from an object side optical imaging system. The first lens has positive refractive power and the second lens has positive refractive power. At least one of the lenses has negative refractive power with a refractive index greater than 1.68.

Abstract: The present disclosure discloses an optical imaging lens assembly including a first lens having positive refractive power with a convex object-side surface and a concave image-side surface; a second lens having refractive power; a third lens having refractive power with a concave image-side surface; a fourth lens having positive refractive power; a fifth lens having refractive power with a convex object-side surface and a concave image-side surface; a sixth lens having positive refractive power with a convex object-side surface and a convex image-side surface; and a seventh lens having negative refractive power with a concave object-side surface and a concave image-side surface. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane, half a diagonal length ImgH of an effective pixel area on the imaging plane and a total effective focal length f satisfy: 5.00 mm<TTL/ImgH*f<6.00 mm.

Abstract: Aspects of the present invention relate to suppression of stray light in head worn computing.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a wide field of view, a low profile and a low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive refractive power in a paraxial region, a second lens, a third lens having an image-side surface being convex in the paraxial region, a fourth lens, a fifth lens with negative refractive power in the paraxial region, a sixth lens with positive refractive power in the paraxial region, and a seventh lens with negative refractive power having an image-side surface that is concave in the paraxial region and is formed as an aspheric surface having at least one pole point in a position off the optical axis.

Abstract: Lens assemblies comprising from an object side to an image side, seven lens elements numbered L1-L7; an optical window; and an image sensor having a sensor diagonal length (SDL), wherein an exemplary lens assembly has a total track length TTL that includes the optical window an effective focal length EFL and a field of view (FOV), wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein FOV<90 degrees, wherein a normalized thickness standard deviation constant T_STD of at least four of the seven lens elements complies with T_STD<0.035, and wherein a focal length f1 of lens element L1 fulfills f1/EFL<0.95.

Abstract: The invention provides a multilayer laminated film with alternately laminated birefringent and isotropic layers. The birefringent layers have a first monotonically increasing region of optical thickness and contain monotonically increasing region 1A of maximum optical thickness is 100 nm or less, and monotonically increasing region 1B of minimum optical thickness of more than 100 nm, and ratio 1B/1A of slope 1B of monotonically increasing region 1B to slope 1A of monotonically increasing region 1A is 0.8 or more and less than 1.5. The isotropic layers have a second monotonically increasing region of optical thickness and contain monotonically increasing region 2A of maximum optical thickness of 200 nm or less and monotonically increasing region 2B of minimum optical thickness of more than 200 nm, and ratio 2B/2A of slope 2B of monotonically increasing region 2B to slope 2A of monotonically increasing region 2A is more than 1.5 and less than 5.

Abstract: The present disclosure provides an optical imaging system and a camera device equipped with the optical imaging system.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of wide field of view, low-profileness and low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive refractive power having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens, a fourth lens being a double-sided aspheric lens, a fifth lens, a sixth lens having an image-side surface being concave in a paraxial region, and a seventh lens with negative refractive power having an image-side surface being concave in a paraxial region, wherein the image-side surface of the seventh lens is an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.

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 disposed in ascending numerical order along an optical axis from an object side of the optical imaging system toward an imaging plane of an image sensor, wherein TTL/(2*IMG HT)?0.67 is satisfied, where TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane of the image sensor, and IMG HT is one half of a diagonal length of the imaging plane of the image sensor, and 15<v1-v3<45 is satisfied, where v1 is an Abbe number of the first lens, and v3 is an Abbe number of the third lens.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of wide field of view, low-profileness and low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive refractive power having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens, a fourth lens being a double-sided aspheric lens, a fifth lens, a sixth lens having an image-side surface being concave in a paraxial region, and a seventh lens with negative refractive power having an image-side surface being concave in a paraxial region, wherein the image-side surface of the seventh lens is an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.

Abstract: The present disclosure discloses a camera lens group including, sequentially from an object side to an image side along an optical axis, a stop; a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power; and a seventh lens having negative refractive power. An aperture number Fno of the camera lens group satisfies: Fno?1.53. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the camera lens group and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the camera lens group satisfy: TTL/ImgH?1.31.

Abstract: In some embodiments there are disclosed folded camera modules comprising a lens with 6 lens elements divided into two lens groups G1 and G2 and an effective focal length EFL, an object side-optical path folding element O-OPFE, an image side-optical path folding element I-OPFE and an image sensor, wherein G1 is located at an object side of the O-OPFE and G2 is located at an image side of the O-OPFE, wherein 8 mm<EFL<50 mm, wherein a camera module is divided into a first region having a minimum camera module region height MHM and including G1 and the O-OPFE, and into a second region having a minimum shoulder region height MHS<MHM and including the I-OPFE and the image sensor, wherein an aperture height of the lens is HL and wherein HL/MHS>0.9.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side: a first lens with positive refractive power formed in a biconvex shape having an object-side surface being convex in a paraxial region; a second lens with negative refractive power having an object-side surface being convex in a paraxial region; a third lens with positive refractive power having an image-side surface being concave in a paraxial region; a fourth lens with positive refractive power in a paraxial region; and a fifth lens with negative refractive power having an object-side surface being concave in a paraxial region; and predetermined conditional expressions are satisfied.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of low-profileness and low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive refractive power having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with negative refractive power in a paraxial region, a fourth lens with positive or negative refractive power having an object-side surface being convex in a paraxial region, a fifth lens with positive or negative refractive power in a paraxial region, and a sixth lens with positive or negative refractive power having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.