69results about How to "Uniform resolution" patented technology

A system for scanning objects having at least two linear array sensors, adapted to detect light input signals, is provided. A lens is optically connected to each of the linear array sensors, and are adapted to receive and transmit an optical image located in a respective lens field of view along a respective lens axis to the respective one of the at least two linear array sensor. A light source which generates an illumination stripe in general linear alignment with the lens axis across a depth of the field of view is provided. A cylindrical lens is positioned between the light source and an object to be scanned. The cylindrical lens adapted to collect, transmit and focus light from the light source to form the illumination stripe. This arrangement provides a wider system field of view with generally more uniform resolution.

The present invention provides a radiographic image detector that may maintain even resolution in 6 directions before and after 3-pixel binning process or 4-pixel binning process. A radiation detector is disposed with plural pixels that have hexagonal shaped pixel regions, arrayed in a honeycomb pattern. Scan lines connected to TFT switches in each of the pixels are disposed one for each of the pixel rows. Grouped scan lines are also disposed one for each of the pixel rows for reading and combining 3 pixels or 4 pixels worth of charges at the same timing for plural pixel groups, each configured from 3 pixels or 4 pixels in a radiation detection element. ON signals are simultaneously sent by the grouped scanned lines to the TFT switches to perform 3-pixel binning or 4-pixel binning.

An brain scanning apparatus having a scanner device and a host computer. The scanner radiation detectors detect radiation emitted from a desired portion, or slice, of a brain source. The scanner device contains microprocessors and code which control the movement of the radiation detectors and performs the data acquisition over a number of slices and transmits this data to the host computer. The host computer initiates a scan by sending desired setup parameters to the scanner device and instructing the scanner to begin collecting data. During the scan, acquired data is sent to the host computer and spooled to a hard disk. The computer can be instructed to perform a slice by slice reconstruction of the source brain while the scan is taking place in order to produce a 2-dimensional reconstruction of the mapped brain. A complete 3-dimensional reconstruction of all the compiled slices is performed and visually displayed after acquisition of all the required slices.

An electron beam inspection system of the image projection type includes a primary electron optical system for shaping an electron beam emitted from an electron gun into a rectangular configuration and applying the shaped electron beam to a sample surface to be inspected. A secondary electron optical system converges secondary electrons emitted from the sample. A detector converts the converged secondary electrons into an optical image through a fluorescent screen and focuses the image to a line sensor. A controller controls the charge transfer time of the line sensor at which the picked-up line image is transferred between each pair of adjacent pixel rows provided in the line sensor in association with the moving speed of a stage for moving the sample.

The present invention corrects the insufficient peripheral light amount due to the lens shading and correcting the non-uniformity of light amount at the periphery due to a distortion resulting from a precision of the lens or a poor mounting precision of the lens. A peripheral light amount correction circuit is structured by an image synchronization signal generation circuit, a coordinate conversion circuit and a luminance value correction computing circuit. An integrated value of luminance values is calculated at the coordinate conversion circuit to extract light amount information. Coordinate values to be input to the luminance value correction computing circuit are generated based on an integrated / averaged value of the light amount information. In the luminance value correction computing circuit, peripheral light amount correction functions are converted based on the input coordinate values from the coordinate conversion circuit to perform appropriate correction on the input image.

The invention relates to a method for designing an optical system as an oblique camera lens. The method comprises: an initial system consisting of an primary initial mirror, an initial secondary mirror, and an initial third mirror is established; a new object-image relationship is established, a plurality of first characteristic light rays are selected, the plurality of first characteristic lightrays are tracked forwardly from object space to an image sensor, a plurality of characteristic data points of a to-be-calculated third reflector are calculated based on the plurality of first characteristic light rays and the new object-image relationship while the primary initial mirror and the initial secondary mirror are kept to be unchanged, and curved-surface fitting is carried out on the plurality of characteristic data points to obtain a third reflector; and a plurality of view fields and a plurality of second characteristic light rays are selected, the plurality of second characteristic light rays are tracked to the object space reversely from the image sensor, a plurality of second characteristic data points of a to-be-calculated primary reflector are calculated based on the plurality of second characteristic light rays and the new object-image relationship, and curved-surface fitting is carried out on the plurality of second characteristic data points to obtain a primary reflector.

A oblique camera lens includes: a primary mirror configured to reflect a light ray to form a first reflected light; a secondary mirror located on a first path of light reflected from the primary mirror and configured to reflect the first reflected light to form a second reflected light; a tertiary mirror located on a second path of light reflected from the secondary mirror and configured to reflect the second reflected light to form a third reflected light; and an image sensor located on a third path of light reflected from the tertiary mirror and configured to receive the third reflected light; wherein each of the first reflecting surface and the third reflecting surface is a sixth order xy polynomial freeform surface; and a field of view of oblique camera lens in an Y-axis direction is greater or equal to 35° and less than or equal to 65°.

An imaging lens comprises a first, a second, a third, and a fourth lens group from an object toward an image. The first lens group includes a first lens that is a convex meniscus lens with a convex surface on the object side. The second lens group includes a second lens having a positive refractive power, and a third lens bonded to the second lens and having a negative refractive power. The third lens group includes a fourth lens having a negative refractive power, and a fifth lens bonded to the fourth lens and having a positive refractive power. The fourth lens group includes a sixth lens having a positive refractive power. The imaging lens satisfies the condition0.10<D / f<0.19where D denotes a sum of an air gap between the first lens and the second lens and an air gap between the fifth lens and the sixth lens, and f denotes a focal length of the entirety of the imaging lens with respect to an e-ray.

A composite diffusion fertilization assembly is arranged on the top face of a movable bottom plate, a fertilization box is arranged in a vibration opening, pesticide spraying holes are symmetrically formed in the positions, located on the two sides of a soil breaking cone, of the bottom end of an inner pipe, and a uniform feeding assembly is installed on the top face of the movable bottom plate. An outer pipe, a spray head and a sealing plug in a bottom screw hole are replaced according to the needed fertilization mode and fertilization density, the fertilization distance and the fertilization mode can be adjusted only by replacing part of parts, automatic fertilization is facilitated, in the fertilization process, a vibration motor drives a fertilization box to continuously vibrate, and the fertilization efficiency is improved. When the soil breaking awl pierces into the ground, the diffusion sheet is unfolded and cuts the ground, and in the resetting process of the outer pipe, the fertilizer flows out under the action of air pressure, so that the fertilizer can conveniently flow into cut gaps and can be conveniently diffused in soil, and the uniformity and the effect of fertilization are improved.