Abstract: A calibration device and method calibrates a distance measuring device which provides captured images with significant lens aberration. The calibration device and method estimate a camera parameter representing a characteristic of each imaging system of a distance measuring device, and perform the following: capture, using the distance measuring device, an image of a reference chart which (i) represents a geometric pattern in which elements are arranged and (ii) is positioned to have a predetermined positional relationship with the distance measuring device; modify a luminance distribution affected by aberration of the lens in the captured image of the reference chart; calculate, as a feature point position, a gravity center position of each element in the captured image whose luminance distribution is modified; and estimate the camera parameter using the feature point position calculated in the calculating and an approximate actual gravity center position in the reference chart.

Abstract: An imaging apparatus of the present invention includes: a lens optical system including a lens and a stop; an imaging device including at least a plurality of first pixels and a plurality of second pixels on which light having passed through the lens optical system is incident; and an arrayed optical device arranged between the lens optical system and the imaging device, wherein: the lens optical system includes, in a plane vertical to an optical axis, a first optical area that transmits therethrough light of a first wavelength band and a second optical area that transmits therethrough light of a second wavelength band different from the first wavelength band; and the arrayed optical device makes light having passed through the first optical area incident on the plurality of first pixels and light having passed through the second optical area incident on the plurality of second pixels.

Abstract: A distance measuring apparatus includes: a reference object; a plurality of optical systems; imaging sections for converting images of an object for distance measurement and the reference object formed in the respective imaging regions into picture data; and a calculation section. The calculation section generates a plurality of picture data of the reference object by light of a first wavelength band and a plurality of picture data of the object for distance measurement by light of a second wavelength band, the second wavelength band being longer in wavelength than is the first wavelength band. From the plurality of picture data, parallax amounts of the reference object and the object for distance measurement are calculated. A distance to the object for distance measurement is calculated based on a corrected parallax amount of the object for distance measurement.

Abstract: A light guide member of the present invention is made of a light transmitting material. The light guide includes a light emitting surface 13, which extends in direction x and includes a lens surface 31 for converging light in direction y. The light guide also includes a light incident surface 11 provided at one of the ends spaced from each other in the direction x. The light emitting surface 13 includes a transitional region 13a adjacent to the light incident surface 11, where the transitional region includes the lens surface 31 and a round pillar surface 32. In the transitional region 13a, the lens surface 31 becomes less dominant in area as proceeding in the direction x toward the light incident surface 11.

Abstract: An imaging device according to the present invention includes: image side non-telecentric imaging optics including a first lens 1, a second lens 2 which is entered by light having traveled through the first lens 1, and an imaging element 4 having an imaging plane 4i for detecting light having traveled through the second lens 2; a position changing section (a cam mechanism 6 and a motor 8) for, during an exposure time, respectively changing a first distance between the first lens 1 and the second lens 2 and a second distance between the second lens 2 and the imaging element 4; and a signal processing section 9 for generating an image by using an electrical signal which is output from the imaging element 4. The imaging element 4 converts light reaching the imaging plane 4i during the exposure time, during which the first distance and the second distance are changing, into an electrical signal.

Abstract: Provided is a test method for accurately testing all regions within a field of view and evaluating, by one-time capturing, accuracy of a distance measured by a compound-eye distance measuring apparatus having two baseline directions.

Abstract: An image capture device according to the present invention includes: a first optical system 10 that has a longitudinal chromatic aberration to cause first, second and third colors to form images at mutually different positions on an optical axis; a first image capturing region Na for generating an image that has a component in at least one of the first, second and third colors by using light that has been transmitted through the first optical system 10; a second optical system 20 that has a different longitudinal chromatic aberration from that of the first optical system 10; a second image capturing region Nb for generating an image that has a component in the same color as the at least one color by using light that has been transmitted through the second optical system 20; and an arithmetic processing section C for generating an output image by using one of the two images that has been generated in the first or second image capturing region Na or Nb so as to have the component in the at least one color apiec

Abstract: A distance measuring apparatus of the present invention is a distance measuring apparatus for determining a distance to an object, comprising: a plurality of optical systems for forming images of the object; and an image capturing section (N) having a plurality of image capturing areas which are associated with the plurality of optical systems on a one-to-one basis, the image capturing section (N) being configured to convert images of the object formed in respective ones of the image capturing areas through the plurality of optical systems to electric signals, the distance to the object being determined based on a parallax between the images of the object formed through the plurality of optical systems, wherein each of the plurality of optical systems includes n lens surfaces (r1, r2), where n is an integer not less than 2, and a direction of a decentration between an ith lens surface (r1) and a jth lens surface (r2) (counting from the object side) is identical among at least one pair of the plurality of opti

Abstract: An image reader A1 according to the present invention comprises a pair of light source devices 3, a light guide member 4, a first and a second reflectors 7A and 7B, a plurality of light receiving elements 5, and a case 1. The image reader A1 further includes a first fitting contrivance 71 for positioning the first reflector 7A relative to the case 1 by inserting the first reflector 7A into the case 1 in the insertion direction z, a second fitting contrivance 72 for positioning the light guide member 4 relative to the case 1 by inserting the light guide member 4 into the case 1 in the insertion direction z, and a third fitting contrivance 73 for positioning the second reflector 7B relative to the case 1 by inserting the second reflector 7B into the case 1 in the insertion direction z.

Abstract: A distance measuring apparatus according to the present invention for measuring a distance to an object based on a parallax of images obtained with a plurality of optical systems includes: a reference object (12); a plurality of optical systems (14a, 14b); imaging sections (17a, 17b) for converting images of the object for distance measurement and the reference object formed in the respective imaging regions by the plurality of optical systems into electrical signals; and a calculation section. From the electrical signals, the calculation section generates a plurality of picture data of the reference object by light of a first wavelength band of the reference object in the plurality of imaging regions and a plurality of picture data of the object for distance measurement by light of a second wavelength band of the object for distance measurement in the plurality of imaging regions, the second wavelength band being longer in wavelength than is the first wavelength band.

Abstract: A distance measuring apparatus according to the present invention determines the distance to an object of range finding based on the amount of parallax between multiple images. The distance measuring apparatus includes: a number of simple lenses L1, L2 in substantially the same shape, on which light that has come from the object of range finding is incident; and an image capturing section N, which has a number of image capturing areas N1, N2 and which captures the images of the object of range finding that have been produced by the respective simple lenses L1, L2 on their associated image capturing areas N1, N2. The lens surfaces r1, r2 of each lens that are opposed to the object of range finding and the image capturing section, respectively, are only aspheric refracting surfaces.

Abstract: To provide highly accurate calibration method or the like for use with a distance measuring device which provides captured images with significant lens aberration.

Abstract: An image reader A1 according to the present invention comprises a pair of light source devices 3, a light guide member 4, a first and a second reflectors 7A and 7B, a plurality of light receiving elements 5, and a case 1. The image reader A1 further includes a first fitting contrivance 71 for positioning the first reflector 7A relative to the case 1 by inserting the first reflector 7A into the case 1 in the insertion direction z, a second fitting contrivance 72 for positioning the light guide member 4 relative to the case 1 by inserting the light guide member 4 into the case 1 in the insertion direction z, and a third fitting contrivance 73 for positioning the second reflector 7B relative to the case 1 by inserting the second reflector 7B into the case 1 in the insertion direction z.

Abstract: Provided is a test method for accurately testing all regions within a field of view and evaluating, by one-time capturing, accuracy of a distance measured by a compound-eye distance measuring apparatus having two baseline directions.

Abstract: A compound eye camera module according to the present invention includes a lens array including a plurality of lenses located on the same plane; an imaging section including a plurality of imaging areas on which a plurality of images of a subject formed by the plurality of lenses are projected in a one-to-one relationship, the imaging section converting each of the plurality of projected images into an electric signal; and an optical aperture section including a plurality of optical apertures corresponding to the plurality of lenses in a one-to-one relationship and located oppositely to the imaging section with respect to the lens array. A difference between a linear expansion coefficient of a material used to form the lens array and a linear expansion coefficient of a material used to form the optical aperture section has an absolute value of 0.7×10?5/° C. or less.

Abstract: A pattern projection light source is disclosed in which a light source (2a); a plurality of mask regions (5) in each of which a light-transmitting portion that transmits light from the light source therethrough is formed in a predetermined pattern; and a plurality of lenses (7) that each form an image of the predetermined pattern of the light-transmitting portion at a predetermined distance are arranged in this order. Since the pattern projection light source includes a plurality of projection optical systems each including a mask region and a lens, a compact and thin pattern projection light source can be realized. Moreover, provision of a plurality of lenses makes it possible to increase the imaging range of a pattern image. Furthermore, an image of the pattern of the light-transmitting portion can be formed clearly on the object.

Abstract: A light guide member of the present invention is made of a light transmitting material. The light guide includes a light emitting surface 13, which extends in direction x and includes a lens surface 31 for converging light in direction y. The light guide also includes a light incident surface 11 provided at one of the ends spaced from each other in the direction x. The light emitting surface 13 includes a transitional region 13a adjacent to the light incident surface 11, where the transitional region includes the lens surface 31 and a round pillar surface 32. In the transitional region 13a, the lens surface 31 becomes less dominant in area as proceeding in the direction x toward the light incident surface 11.

Abstract: An image sensor module A1 includes a case 300, a photoelectric converter 400 positioned within the case 300, and first and second optical units 100, 200 for forming an image of a subject on the light-receiving surface of the photoelectric converter 400. Imaging of the subject using the first optical unit 100, or imaging of the subject using the second optical unit 200, can be selected. It is possible to conduct a plurality of types of imaging each having a different view angle, while restricting increases in size and cost.

Abstract: A method of making a lens array includes a first step of forming a resin-molded piece, a second step of applying a coating to the resin-molded piece, a third step of melting the applied coating and a fourth step of solidifying the melted coating. The resin-molded piece formed in the first step includes a plurality of lenses each having a convex lens surface, and a holder portion for holding the plurality of lenses. In the second step, the coating is applied to the holder portion so as to surround each lens surface.

Abstract: An image reading apparatus includes a light source for illuminating an image reading region extending in the primary scanning direction, and a plurality of lenses for focusing light reflected on the image reading region and for producing reduced images. Each of the lenses has an optical axis which intersects a predetermined portion of the image reading region. The image reading apparatus further includes a plurality of light receiving elements for output of image signals based on the light focused by the lenses and a light conductor for leading the light emitted by the light source toward the image reading region. The light conductor leads the emitted light so that the predetermined portion of the image reading region is illuminated more brightly than the adjacent portions.