Abstract:
A wide-angle lens system comprises a first lens having a concave aspheric surface and a planar surface, a second lens having a convex aspheric surface and a planar surface, a substrate, wherein the planar surface of the first lens is adjacent to a first side of the substrate and the planar surface of the second lens is adjacent to a second side of the substrate, a third lens behind the second lens having a concave aspheric surface and a planar surface, and a stop disposed between the first lens and the substrate. The planar surface of the third lens is secured to an outermost surface of an image sensor.
Abstract:
A two-surface narrow field-of-view (FOV) compound lens for producing an image of an object at an image plane of an imaging system includes a biplanar substrate between a plano-convex lens and a plano-concave lens having a common optical axis. The plano-convex lens has a first planar surface on a first side of the biplanar substrate and is formed of a material having a first Abbe number. The plano-concave lens has a second planar surface on a second side of the biplanar substrate opposite the first side, and is formed of a material having a second Abbe number less than the first Abbe number. The first and second lens have respective focal lengths F1 and F2 that may satisfy −1.4
Abstract:
A four-piece all-aspheric adapter fisheye lens includes a negative meniscus lens, a biconcave lens, a positive meniscus lens, and a biconvex lens. The biconcave lens is between the negative meniscus lens and the positive meniscus lens; the positive meniscus lens is between the biconcave lens and the biconvex lens. The negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens are coaxial and arranged with an exit pupil to cooperatively generate an image with a camera lens that has greater field of view than the camera lens alone when the exit pupil is coplanar and coaxial with an entrance pupil of the camera lens. Each of the negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens has an aspheric object-side surface and an aspheric image-side surface.
Abstract:
An ultra-small camera module with wide field of view includes (a) a wafer-level lens system for forming, on an image plane, an image of a wide field-of-view scene, wherein the wafer-level lens system includes (i) a distal planar surface positioned closest to the scene and no more than 2.5 millimeters away from the image plane in direction along optical axis of the wafer-level lens system, and (ii) a plurality of lens elements optically coupled in series along the optical axis, each of the lens elements having a curved surface, and (b) an image sensor mechanically coupled to the wafer-level lens system and including a rectangular array of photosensitive pixels, positioned at the image plane, for capturing the image, wherein cross section of the ultra-small camera module, orthogonal to the optical axis, is rectangular with side lengths no greater than 1.5 millimeters.
Abstract:
A four-surface narrow field-of-view compound lens includes a first biplanar substrate between a first lens and a second lens, the first lens being plano-convex and the second lens being plano-concave. The compound lens also includes a second biplanar substrate between a third lens and a fourth lens, the third lens being plano-convex and the fourth lens being plano-concave. The second lens and third lens are between the first biplanar substrate and the second biplanar substrate. The first lens, second lens, third lens, and fourth lens are coaxial and are formed of materials having a first, second, third, and fourth Abbe number respectively and focal lengths F1, F2, F3, and F4 respectively. The first Abbe number exceeds the second Abbe number and the third Abbe number exceeds the fourth Abbe number. Ratio F1/F2 may satisfy −0.32
Abstract:
A four-surface narrow field-of-view compound lens includes a first biplanar substrate between a first lens and a second lens, the first lens being plano-convex and the second lens being plano-concave. The compound lens also includes a second biplanar substrate between a third lens and a fourth lens, the third lens being plano-convex and the fourth lens being plano-concave. The second lens and third lens are between the first biplanar substrate and the second biplanar substrate. The first lens, second lens, third lens, and fourth lens are coaxial and are formed of materials having a first, second, third, and fourth Abbe number respectively and focal lengths F1, F2, F3, and F4 respectively. The first Abbe number exceeds the second Abbe number and the third Abbe number exceeds the fourth Abbe number. Ratio F1/F2 may satisfy −0.32
Abstract:
A wide-angle camera and fabrication method thereof includes a sensor with a plurality of pixel sub-arrays and an array of optical elements on a first side of a substrate. Each of the optical elements is capable of forming an image from a field of view onto a different one of the pixel sub-arrays. The wide-angle camera also includes an array of achromatic doublet prisms on a second side of the substrate, where each of the achromatic doublet prisms is aligned to provide a viewing angle with a different one of the optical elements. The sensor captures a wide-angle field of view while having a compact format.
Abstract:
A wide-angle lens system comprises a first lens having a concave aspheric surface and a planar surface, a second lens having a convex aspheric surface and a planar surface, a substrate, wherein the planar surface of the first lens is adjacent to a first side of the substrate and the planar surface of the second lens is adjacent to a second side of the substrate, a third lens behind the second lens having a concave aspheric surface and a planar surface, and a stop disposed between the first lens and the substrate. The planar surface of the third lens is secured to an outermost surface of an image sensor.
Abstract:
A wide-angle camera and fabrication method thereof includes a sensor with a plurality of pixel sub-arrays and an array of optical elements on a first side of a substrate. Each of the optical elements is capable of forming an image from a field of view onto a different one of the pixel sub-arrays. The wide-angle camera also includes an array of achromatic doublet prisms on a second side of the substrate, where each of the achromatic doublet prisms is aligned to provide a viewing angle with a different one of the optical elements. The sensor captures a wide-angle field of view while having a compact format.
Abstract:
A two-surface narrow field-of-view (FOV) compound lens for producing an image of an object at an image plane of an imaging system includes a biplanar substrate between a plano-convex lens and a plano-concave lens having a common optical axis. The plano-convex lens has a first planar surface on a first side of the biplanar substrate and is formed of a material having a first Abbe number. The plano-concave lens has a second planar surface on a second side of the biplanar substrate opposite the first side, and is formed of a material having a second Abbe number less than the first Abbe number. The first and second lens have respective focal lengths F1 and F2 that may satisfy −1.4