Abstract: An imaging apparatus includes: a lens group formed of one or more lens elements; and an imaging device having a light receiving surface on which the lens group forms an image of an object, wherein the light receiving surface of the imaging device is a curved surface that is concave toward the lens group, and the light receiving surface of the imaging device has an aspheric shape so shaped that a tangential angle that is an angle between a tangential line circumscribing an edge of the light receiving surface and a plane perpendicular to an optical axis of the lens group is smaller than the tangential angle provided when the light receiving surface has a spherical shape.

Abstract: An imaging apparatus includes: a first lens group disposed on a subject side of a diaphragm in the vicinity of which two polarizers that polarize light from a subject are disposed, the polarizers being first and second polarizers whose polarization directions are perpendicular to each other; a second lens group disposed on the side of the diaphragm where an imaging device is present, over a photodetection surface of which third and fourth polarizers are disposed, the third and fourth polarizers having polarization directions parallel to the polarization direction of the first and second polarizers, respectively; and an image processor that produces stereoscopic images based on image data produced by converting light incident on the imaging device through the first lens group and the second lens group. The second lens group has positive refracting power, and characteristics of the first lens group and the second lens group satisfy certain conditions.

Abstract: There is provided an imaging apparatus including: a lens group including one or more lens elements; and an image sensor having a light-receiving surface onto which an image of an object is formed by the lens group. The light-receiving surface of the image sensor is curved concavely toward the lens group. A distance from a lens surface closest to the light-receiving surface of the lens group to the light-receiving surface is a half or more of a distance from a lens surface closest to the object of the lens group to the light-receiving surface.

Abstract: An optical unit and an imaging apparatus including the optical unit. The optical unit includes a first lens group, a second lens group, and a third lens group, which are arranged in order from an object side to an image plane side. Further, the first lens group includes a first lens element, a first transparent body, and a second lens element, which are arranged in order from the object side to the image plane side.

Abstract: An imaging apparatus includes: a lens group formed of one or more lens elements; and an imaging device having a light receiving surface on which the lens group forms an image of an object, wherein the light receiving surface of the imaging device is a curved surface that is concave toward the lens group, and the light receiving surface of the imaging device has an aspheric shape so shaped that a tangential angle that is an angle between a tangential line circumscribing an edge of the light receiving surface and a plane perpendicular to an optical axis of the lens group is smaller than the tangential angle provided when the light receiving surface has a spherical shape.

Abstract: The present invention provides an optical unit and an imaging device, which are capable of providing a small-sized low-cost imaging optical system that has high resolution and high heat resistance. The optical unit comprises at least a first lens group (110) and a second lens group (120) among the first lens group, the second lens group and a third lens group which are sequentially arranged from the object side to the image plane side. The first lens group (110) comprises an assembly of at least a first lens element (111) and a second lens element (112), a transparent body (113) and a third lens element (114) which are sequentially arranged from the object side to the image plane side. The first lens element (111) and the second lens element (112) of the assembly are formed from resin materials that have different temperature-dependent refractive index changes.

Abstract: An optical unit and an image pickup unit are provided that allow a full angular field to be increased in spite of small size and low cost. An image pickup lens 100 has a first lens 111 with a positive power, a second lens 113 with a positive power, a third lens 114 with a positive power, and a fourth lens 115 with a negative power that are arranged in order from an object side OBJS toward an image surface side, that are arranged in order from the object side toward the image surface side.

Abstract: An optical unit that is configured of a three-group wide-angle lens, that is capable of suppressing optical distortion to a small amount, that has favorable optical characteristics, and that is tolerant of reflow, and an image pickup apparatus are provided. An optical unit 100 includes: a first lens group 110 including a first lens element 111; a second lens group 120 including a second lens element 121, a first transparent member 122, and a third lens element 123 that are arranged in order from object plane toward image plane; and a third lens group 130 including a fourth lens element 131, a second transparent member 132, and a fifth lens element 33 that are arranged in order from the object plane toward the image plane, the first lens group 110, the second lens group 120, and the third lens group 130 being arranged in order from the object plane toward the image plane.

Abstract: An electronic apparatus includes an imaging device and a signal processing circuit for performing signal processing on an output signal of the imaging device. The imaging device includes one group of lenses, and an imaging element on which an image is formed through the lenses, and the lenses include a first lens having an object side surface in a convex shape projecting to an object side, a transparent body, and a second lens, the first lens, the transparent body, and the second lens being arranged in order from the object side to an image surface side without an air being interposed between the first lens, the transparent body, and the second lens, and the imaging element is curved so as to have a concave surface facing the object side.

Abstract: An optical unit and an image pickup unit are provided that allow a full angular field to be increased in spite of small size and low cost. An image pickup lens 100 has a first lens 111 with a positive power, a second lens 113 with a positive power, a third lens 114 with a positive power, and a fourth lens 115 with a negative power that are arranged in order from an object side OBJS toward an image surface side, that are arranged in order from the object side toward the image surface side.

Abstract: An optical unit that is configured of a three-group wide-angle lens, that is capable of suppressing optical distortion to a small amount, that has favorable optical characteristics, and that is tolerant of reflow, and an image pickup apparatus are provided. An optical unit 100 includes: a first lens group 110 including a first lens element 111; a second lens group 120 including a second lens element 121, a first transparent member 122, and a third lens element 123 that are arranged in order from object plane toward image plane; and a third lens group 130 including a fourth lens element 131, a second transparent member 132, and a fifth lens element 33 that are arranged in order from the object plane toward the image plane, the first lens group 110, the second lens group 120, and the third lens group 130 being arranged in order from the object plane toward the image plane.

Abstract: An optical unit includes a first lens, a diaphragm, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens is a positive meniscus lens which is convex toward an object side. The second lens has a positive power. The third lens has a negative power. The fourth lens has a positive power. The fifth lens has a negative power. Those are arranged in the stated order from the object side to an image plane side.

Abstract: An optical unit includes: a first lens group; and a second lens group, which are arranged in order from an object side toward an image surface side, wherein the first lens group includes a first lens element, a first transparent body, and a second lens element, which are arranged in order from the object side toward the image surface side, and the second lens group includes a third lens element, a second transparent body and a fourth lens element, which are arranged in order from the object side toward the image surface side.

Abstract: The present invention provides an optical unit and an imaging device, which are capable of providing a small-sized low-cost imaging optical system that has high resolution and high heat resistance. The optical unit comprises at least a first lens group (110) and a second lens group (120) among the first lens group, the second lens group and a third lens group which are sequentially arranged from the object side to the image plane side. The first lens group (110) comprises an assembly of at least a first lens element (111) and a second lens element (112), a transparent body (113) and a third lens element (114) which are sequentially arranged from the object side to the image plane side. The first lens element (111) and the second lens element (112) of the assembly are formed from resin materials that have different temperature-dependent refractive index changes.

Abstract: There is provided an imaging apparatus including a first polarizing unit that polarizes light from an object, a lens system that condenses light from the first polarizing unit, and an imaging element array that has imaging elements arranged in a matrix of a first direction and a second direction orthogonal to the first direction, has a second polarizing unit arranged on a light incident side, and converts the light condensed by the lens system into an electric signal.

Abstract: The present invention relates to an optical unit and an imaging apparatus, which can realize a lens element that has a high MTF, is small, bright, and optimal to a fixed-focus camera while having an advantage of a three-group configuration that the depth of field is deep. An optical unit 100 includes a first lens group 110, a second lens group 120, and a third lens group 130, which are arranged in order from an object side to an image plane side, and the first lens group 110 includes a first lens element 111, a first transparent body 112, and a second lens element 113, which are arranged in order from the object side to the image plane side.

Abstract: An imaging apparatus includes: a first lens group disposed on a subject side of a diaphragm in the vicinity of which two polarizers that polarize light from a subject are disposed, the polarizers being first and second polarizers whose polarization directions are perpendicular to each other; a second lens group disposed on the side of the diaphragm where an imaging device is present, over a photodetection surface of which third and fourth polarizers are disposed, the third and fourth polarizers having polarization directions parallel to the polarization direction of the first and second polarizers, respectively; and an image processor that produces stereoscopic images based on image data produced by converting light incident on the imaging device through the first lens group and the second lens group. The second lens group has positive refracting power, and characteristics of the first lens group and the second lens group satisfy certain conditions.

Abstract: An optical unit with a first lens group and a second lens group, the first lens group and the second lens group being sequentially arranged from an object side to an image plane side, the first lens group including a first lens element, a transparent body, and a second lens element, the first lens element, the transparent body, and the second lens element being sequentially arranged from the object side to the image plane side, the second lens group including only a third lens element.

Abstract: [Object] To provide an optical unit and an image pickup apparatus that are capable of realizing a high-resolution and high-performance image pickup system. [Solving Means] An image pickup lens (100) includes a first lens group (110) and a second lens group (120) that are sequentially arranged from an object side (OBJS) to an image plane (140) side. The first lens group (110) includes a first lens element (111), a second lens element (112), a first transparent body (113), and a third lens element (114) that are sequentially arranged from the object side (OBJS) to the image plane (140) side. The second lens group (120) includes a fourth lens element (121), a second transparent body (122), a second buffer layer (123), and a fifth lens element (124) that are sequentially arranged from the object side (OBJS) to the image plane (140) side. The first lens element (111) and the second lens element (112) of the first lens group (110) form a doublet lens.

Abstract: An optical unit includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, and a fifth lens, which are arranged in the stated order from an object side to an image plane side. The second lens has a convex shape. The third lens has a meniscus shape. The fourth lens has a convex shape. The fifth lens has a negative power.