Abstract:
The imaging lens consists of, in order from an object side, a positive first lens L1, a negative second lens L2, a positive third lens L3, and a positive fourth lens L4. Conditional expressions relating to a focal length f of an entire system, a combined focal length f234 of the second lens L2 to the fourth lens L4, an Abbe number νd1 of the first lens L1, an Abbe number νd2 of the second lens L2, a radius of curvature R1 of a surface of the first lens L1 on the object side, and a radius of curvature R2 of a surface of the first lens L1 on an image side: 0.4
Abstract:
Provided are an imaging lens and an Imaging apparatus which includes this imaging lens. The imaging lens consists of, in order from an object side: a front group GF; a diaphragm St; and a rear group GR. The front group GF consists of, in order from the object side: a first lens L1 that is convex toward the object side and has a negative refractive power; a second lens L2 that has a negative refractive power; and a third lens L3 that has a positive refractive power. The rear group GR consists of, in order from the object side: a fourth lens L4 that has a positive refractive power; a fifth lens L5 that has a positive refractive power; a sixth lens L6 that has a negative refractive power; a seventh lens L7 that has a positive refractive power; and an eighth lens L8 that has a negative refractive power.
Abstract:
Upon input of a synchronization signal, which indicates a start of an X-ray emission, from a source control unit for controlling an X-ray source, an electronic cassette makes an FPD start an accumulation operation and measurement of an X-ray dose. The electronic cassette and a console command their communicators to stop communication of any signal other than a stop signal, which stops the X-ray emission from the X-ray source, during the accumulation operation of the FPD. As soon as the X-ray dose has reached a predetermined threshold value, the electronic cassette transmits the stop signal to the source control unit through the console. A delay in transmission of the stop signal due to communication congestion or signal collision does not occur, because the electronic cassette and the console stop the communication of the signal other than the stop signal.
Abstract:
In the case where radiological imaging of a subject to be injected with a contrast agent is performed continuously and a radiation exposure dose of the subject due to the continuous radiological imaging is obtained based on a radiation image signal of each frame detected by a radiation image detector through the continuous radiological imaging, identifying a frame which includes an image signal representing an image of the contrast agent as a contrast agent frame from the radiation image signal of each frame, and correcting the radiation exposure dose based on information of the contrast agent frame and obtaining a radiation exposure dose of the subject for the radiological imaging of the contrast agent frame.
Abstract:
A processor is configured to compare a captured image captured by a camera of a transmissive display device, information representing a position of marking performed on the captured image displayed on another display device, a region of a real space in which a display image is displayable by the transmissive display device, and the position of the marking in the real space, display information representing the position of the marking in the real space, acquire a detection result obtained by detecting a visual line of a user of the transmissive display device, compare the detection result of the visual line with the position in the real space of the marking or information representing the position in the real space of the marking, and change the marking or a display state of the information representing the position of the marking.
Abstract:
An image processing device includes a processor that performs composition processing for generating an image, which simulates a transmission state of a virtual image via a transmission-type display, on the basis of a parameter representing characteristics of a model of the transmission-type display from a first image serving as the basis of the virtual image and a second image indicating a real image.
Abstract:
An imaging apparatus of the present invention includes an imaging element, an observation unit that includes a correction lens for correcting a ray angle incident on an eye of a user, and with which a target to be imaged of the imaging element is observable, a storage unit that stores data related to astigmatism of the user, and a processor that controls the correction lens. The processor is configured to execute readout processing of reading out the data from the storage unit storing the data related to the astigmatism of the user, determination processing of determining an inclination of a second direction of the imaging element with respect to a first direction of the eye of the user, and adjustment processing of adjusting a correction amount of the ray angle by the correction lens based on the data read out by the readout processing and a result determined by the determination processing.
Abstract:
Provided are an imaging lens that has a small amount of focus shift caused by temperature fluctuation and an imaging apparatus that has this imaging lens. The imaging lens consists of, in order from an object side: a first lens that is convex toward the object side and has a negative refractive power; a second lens that has a negative refractive power; a third lens that has a positive refractive power; a fourth lens that has a positive refractive power; a fifth lens that has a positive refractive power; and a sixth lens that has a negative refractive power. The imaging lens satisfies the following conditional expressions (1) to (4). −0.89
Abstract:
A communication section having a relatively high communication speed is used for communicating a detection signal or an emission stop signal between a source control device and an electronic cassette. The detection signal is outputted from a detection pixel of the electronic cassette. The emission stop signal depends on a comparison result between an integrated value of the detection signal and an emission stop threshold value. On the other hand, a wireless communication section having a lower communication speed than that of the detection signal and the emission stop signal is used for communicating image data and the like between the electronic cassette and a console.
Abstract:
In a projection optical system that projects an image displayed on an image display device arranged on a reduction-side conjugate plane onto a magnification-side conjugate plane, as a magnified image, the projection optical system includes a refractive optical system and a reflective optical system having negative refractive power in this order from a reduction side. Further, the following conditional formula (1) is satisfied: (ZL+ZD)×Ymin/Ymax2≦3.2 (1).