Abstract: A compression member puts a breast disposed between a radiation source and a radiation detector into a compressed state, and includes a first marker that is formed of a first material, which is visible in an ultrasound image and is not visible in a radiation image, and of which a position in the compression member is discriminative, and a second marker that is provided at a position, which does not affect an image interpretation of the radiation image, and is formed of a second material which is visible in the radiation image.

Abstract: A tire comprises a tread portion comprising circumferential grooves and land portions divided thereby. The land portions include a first shoulder land portion and a first middle land portion adjacent thereto. The first shoulder land portion is provided with first shoulder sipes. The middle land portion is provided with first middle sipes. Each of the first shoulder sipes and the first middle sipes comprises a main portion extending in the tire radial direction, and a widened portion having a width greater than the main portion and opened at the tread surface of the land portion. The opening width of the first shoulder sipe at the tread surface is larger than the opening width of the first middle sipe at the tread surface.

Abstract: An image processing apparatus includes at least one processor, and the processor is configured to: acquire a radiation image and a plurality of continuously captured ultrasound images while a breast is kept in a compression state by a compression member; acquire correction information related to at least one of a tilt of a probe that has performed scanning on the compression member during the capturing of the plurality of ultrasound images or a deflection of the compression member; generate a corrected ultrasound image corrected based on the correction information from the plurality of acquired ultrasound images; and associate the corrected ultrasound image with the radiation image.

Abstract: An image-capturing element that receives light of a subject image entering within a camera body through an interchangeable photographic lens is packaged and is mounted at the camera body via a holder. A camera-side mounting surface and a holder-side mounting surface are machined in advance and formed respectively relative to the mounting surface for the photographic lens formed at the camera body and the light-receiving surface of the image-capturing element. By mounting the image-capturing apparatus with the camera-side mounting surface and the holder-side mounting surface placed in contact with each other at the camera body using screws, the light-receiving surface is aligned with the image-forming position of the photographic lens.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10? and L20? emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutilo, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10? and L20? emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate id along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: By using a focal plane shutter having one set of shutter blades as a shielding member of an image pick-up element, it is possible to miniaturize the shutter compared to a focal plane shutter having two sets of blades. This enables the operation to be simplified, and also saves space. Furthermore, in an electronic camera having this focal plane shutter, because the shooting lens side of the image pick-up element that is disposed in the main camera body can be disposed protruding into the shutter unit, the length of the main camera body in the direction of the optical path of the shooting lens can be reduced, and it is possible to form the main camera body small compared to a conventional main camera body.

Abstract: An image-capturing element that receives light of a subject image entering within a camera body through an interchangeable photographic lens is packaged and is mounted at the camera body via a holder. A camera-side mounting surface and a holder-side mounting surface are machined in advance and formed respectively relative to the mounting surface for the photographic lens formed at the camera body and the light-receiving surface of the image-capturing element. By mounting the image-capturing apparatus with the camera-side mounting surface and the holder-side mounting surface placed in contact with each other at the camera body using screws, the light-receiving surface is aligned with the image-forming position of the photographic lens.

Abstract: An image-capturing element that receives light of a subject image entering within a camera body through an interchangeable photographic lens is packaged and is mounted at the camera body via a holder. A camera-side mounting surface and a holder-side mounting surface are machined in advance and formed respectively relative to the mounting surface for the photographic lens formed at the camera body and the light-receiving surface of the image-capturing element. By mounting the image-capturing apparatus with the camera-side mounting surface and the holder-side mounting surface placed in contact with each other at the camera body using screws, the light-receiving surface is aligned with the image-forming position of the photographic lens.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12. L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate la to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate la are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L12, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12. L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L12, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile, Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate la to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile. Chilean nitrate, or the like.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate 1a to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15.

Abstract: An electronic flash unit is caused to perform a pre-flash immediately before a photographing operation, and the quantity of light reflected by the subject during the pre-flash is measured by a flash metering unit. Based upon the output from the flash metering unit, a decision is made as to whether or not another pre-flash is to be implemented. Based upon the results of the decision-making, another pre-flash is performed if necessary. Thus, if the quantity of light measured by the flash metering unit during the pre-flash is too small or too large and a sufficient degree of accuracy is not achieved in the measurement, another pre-flash is performed to assure a high degree of accuracy in metering.

Abstract: Light emitted from a taking lens 20 enters a first birefringent plate la to be spatially divided along a first direction extending perpendicular to the direction in which the light advances to achieve two separate rays L10 and L20. The vibrational planes of the two light fluxes L10 and L20 emitted from the first birefringent plate 1a are converted to a circularly polarized light by a phase plate 1c. The two light fluxes L10′ and L20′ emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L11, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. At least either the first birefringent plate or the second birefringent plate is constituted of lithium niobate, rutile. Chilean nitrate, or the like.

Abstract: A focus detection device that is capable of performing focus detection in several focus detection areas within a photographic image plane using, for example, a phase difference method and that uses an auxiliary illumination light with at least one of the areas also includes infrared light cut filters that block the transmission of light above predetermined wavelengths. In particular, the maximum wavelength of the light transmitted by the infrared cut filter for one of the focus detection areas is different than the maximum wavelength of the light transmitted by the infrared cut filter for another one of the focus detection areas.

Abstract: A power focus device for a camera provides a user-friendly lever interface allowing efficient camera operation. A lever, located outside a camera cover, is movable in two opposing directions but is biased to remain at a neutral position between two extremes of movement. Moving the lever from the neutral position initiates driving the camera lens to focus in either a first or a second direction according to a direction of a displacement of the lever from the neutral position. A speed of focusing is proportional to an amount of displacement of the lever from the neutral position, thus permitting variable high and low speed focusing in both directions for rapid and accurate close-up and infinity focussing. Incorporating a seal into the device permits use in underwater camera applications.