42results about How to "Suppress shadows" patented technology

A fabrication method of an anti-reflection structure includes the steps of: forming a resin film having micro-particles dispersed therein on a surface of a substrate; forming a protrusion dummy pattern on the resin film by etching the resin film using the micro-particles in the resin film as a mask while gradually etching the micro-particles; and forming a protrusion pattern on the surface of the substrate by etching back the surface of the substrate together with the resin film having the protrusion dummy pattern formed thereon, and transferring a surface shape of the protrusion dummy pattern formed on a surface of the resin film to the surface of the substrate.

This invention is applied to a projection video display apparatus which causes a DMA to modulate light from a light source having a plurality of two-dimensionally arrayed LEDs in accordance with a video signal and projects the modulated video light onto a screen via a projection optical lens. The two-dimensionally arrayed LEDs are sequentially turned off from outside to inside when a drive device for ON / OFF-driving the LEDs of the light source is designated to darken the light source. Alternatively, the two-dimensionally arrayed light-emitting elements are sequentially turned on from inside to outside when the drive device is designated to brighten the light source.

A solid-state imaging device having an arrangement in which well contact is achieved for each pixel is provided. In the solid-state imaging device, a well contact part is formed in an activation region of a photoelectric conversion portion. The well contact part fixes a well in which the photoelectric conversion portion and transistors of the pixel are provided at a predetermined potential.

In an organic EL display device, a resistance of a cathode electrode of OLEDs is substantially reduced while maintaining a higher opening ratio of pixels as an entire display area. A reference power supply line is formed on a glass substrate, and receives a reference potential for driving the OLED. The OLED is formed on the glass substrate where the reference power supply line is formed, and has a structure in which a lower electrode, an organic material layer, and an upper electrode that is a cathode electrode common to plural pixels are laminated on each other in the order from the bottom. In some of the plural pixels, a cathode contact that penetrates through the organic material layer, and electrically connects the upper electrode to the reference power supply line is formed within an opening area corresponding to a W sub-pixel.

An image sensing apparatus includes an image sensing device having a plurality of pixels, a smoothing unit that smoothes a first dark image signal acquired with the image sensing device shielded from light; a subtraction unit that subtracts a second dark image signal from the first dark image signal; an extraction unit that extracts, as a defective pixel of the image sensing device, a pixel of which an obtained difference is outside a preset range; and a correction unit that corrects, out of subject image signals output from the image sensing device, an image signal of the defective pixel extracted by the extracting unit, using an image signal of a pixel peripheral to the defective pixel.

An image in which a shade of a driver's face is certainly suppressed is to be obtained, while suppressing increases in a size and an electric power consumption of an illumination. An illumination pulse-lights an illumination light which is an infrared light whose peak wavelength is 940 nm, under a control of a synchronous control section. The illumination light is irradiated to a driver through a polarizing filter and a visible light interruption filter. Reflex lights of the illumination light and a disturbance light, which were reflected by the driver, enter to an infrared BPF, in which a center wavelength is 940 nm, through the visible light interruption filter, a polarizing filter 34 and an optical lens. An image pickup element image-picks-up a light which transmitted through the infrared BPF. A synchronous control section controls such that a lit term of the illumination synchronizes with an exposure time of the image pickup element. The present invention can be applied, e.g., to a monitoring device of the driver.

An image sensing apparatus includes an image sensing device having a plurality of pixels, a smoothing unit that smoothes a dark image signal acquired with the image sensing device shielded from light; a subtraction unit that subtracts a second dark image signal from the dark image signal; an extraction unit that extracts, as a defective pixel of the image sensing device, a pixel of which an obtained difference is outside a preset range; and a correction unit that corrects, out of subject image signals output from the image sensing device, an image signal of the defective pixel extracted by the extracting unit, using an image signal of a pixel peripheral to the defective pixel.

In a top emission type organic EL display device, brightness gradient in a screen is reduced while keeping a screen brightness. A reflection film is formed under a lower electrode and the light from an organic EL layer is emitted through an upper electrode. Light absorption of the upper electrode is larger on the side of a shorter wavelength. When a film thickness of the upper electrode is enlarged in order to reduce the brightness gradient in a screen, the film thicknesses of the upper electrodes for a red pixel and a green pixel are enlarged without enlarging the film thickness of the upper electrode for a blue pixel. This makes it possible to reduce the brightness gradient as well as to suppress the light absorption of the upper electrode.

The present invention provides a compact and high-performance image pickup lens having a fast F-number and capable of suppressing shading by using a curved projection surface. An image pickup lens 10 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive or negative refractive power, a fourth lens L4 having a positive or negative refractive power, and a fifth lens L5 having a negative refractive power. With regard to the fifth lens L5 among these lenses, at least one surface is aspherical. The above-described image pickup lens 10 satisfies a conditional expression (1): −2.50<f5 / f<−0.10 . . . (1) where f5 is a focal length of the fifth lens L5 and f is a focal length of the entire system of the image pickup lens 10.

The depositing apparatus of the invention comprises a depositing source used for accepting deposited substances; and a plurality of nozzles arranged on one side of the depositing source in a first direction and used for ejecting the deposited substances to opposite substrates. The depositing source is divided into a central area and peripheral areas at two ends of the central area with the first direction as a standard. The depositing apparatus also comprises nozzle tops arranged on the nozzles of each peripheral area in a detachable mode, allowing the tail end surfaces ejecting the deposited substances to form inclined angles with the surface of the substrates in the first direction and facing the outer side direction of the depositing source. According to the embodiment of the invention, by increasing the incidence angles of the deposited substances to the substrates, the shadow permeated by the deposited substances between deposition masks and substrates can be restrained, deposition remains can be reduced and deposition uniformity and efficiency can be raised, and thereby the high resolution of an organic light emitting display can be easily realized.

The invention discloses a method for processing a video image under an intelligent transportation monitoring scene, which comprises the following steps: A. determining a lane detection region and determining the lane direction by analyzing the running track of a moving target in the lane detection region in continuous M frames of video images; B. respectively determining whether shadows exist in each later frame of the video image according to the lane direction and executing step C if determining that the shadows exist in continuous N frames of the video images; and C. respectively inhibiting the shadows in each later frame of the video image according to a hue, saturation and value (HSV) color model, determining whether the contact ratio of foreground images in each frame of the video image before and after the inhibition meets the requirements, and repeatedly executing step B if continuous L frames meet the requirements, wherein, M, N and L are positive integers which are greater than 1. The invention further discloses a device for processing a video image under the intelligent transportation monitoring scene. The method and the device of the invention can effectively inhibit the shadows in the video images.

An image pickup lens 10 includes a first lens L1, a second lens L2, and a third lens L3. An image pickup surface I of a solid-state image sensor 51 is curved into the shape of a shallow concave spherical surface. By forming an image side surface 3b of the third lens L3, which is the lens nearest to the image side, into an aspherical shape, it is possible to make a curvature of field suitable to the curved image pickup surface I while securing excellent telecentric characteristics. The above image pickup lens 10 satisfies conditional expression (1) where THID is a thickness of an outermost periphery PA of the lens L3 nearest to the image side along an optical axis direction AX and THIC is a thickness of the lens L3 nearest to the image side on the optical axis AX.

The invention relates to a maximum entropy-based road shadow suppression method and belongs to the technical field of image processing. The maximum entropy-based road shadow suppression method is used for reducing interference of road shadow during road detection. For solving the problem that similar methods are not thorough in shadow suppression and are prone to eliminating effective road areas, the technical scheme of the maximum entropy-based road shadow suppression method comprises, firstly, transferring a colorful image into an HSV (hue, saturation and value) color space, and extracting the HSV feature (log (H / S), log (V / S)) of every pixel point; secondly, projecting the HSV features of all the pixel points in the HSV image into a one-dimensional space, calculating the entropy values of the HSV features in the one-dimensional space, changing the projection angle a to obtain the entropy values corresponding to different projection angles, and determining the projection angle am corresponding to the maximum entropy value; lastly, reconstructing the HSV image on the basis of the projection angle am, performing binarization and hole filling sequentially on the reconstructed image to obtain a shadow-suppressed road image. The maximum entropy-based road shadow suppression method is efficient, feasible and high in adaptability to different road conditions.

A textile-material monitoring device (11) that can improve accuracy in detection of a foreign matter by reducing shadows during the detection and detect a thickness irregularity of a textile material (10) favorably is provided. A clearer of the textile-material monitoring includes a light source unit (36), a light receiving unit (37) that doubles as a transmitted-light receiving unit and a reflected-light receiving unit, and a diffuser member (38). The light receiving unit (37) receives, of light emitted from the light source unit (36) toward a running spun yarn, light transmitted through the spun yarn and light reflected from the same. The diffuser member (38) arranged between the light source unit. (36) and the spun yarn (10) diffuses the light emitted from the light source unit (36) such that a degree of light diffusion in a plane orthogonal to a running direction of the spun yarn is greater than a degree of light diffusion in a plane parallel to the running direction.

The invention relates to a light source unit and an illumination device. The light source unit includes a substrate and a reflective body. The substrate includes a plurality of light-emitting elements mounted thereon. The reflective body includes a plurality of incident openings each corresponding to one of the plurality of light-emitting elements, an output opening to which light that has passed through the incident opening is output, and a plurality of reflective surfaces that expand from the incident opening toward the output opening. Reflective surfaces included in the plurality of reflective surfaces and positioned on an outermost side are provided to be adjacent to one another, and an angle is set so as to prevent reflective light of light emitted from the light-emitting elements from traveling toward an outer side in a reflective surface formed on the outer side. The invention also provides the illumination device using the light source unit.

A fabrication method of an anti-reflection structure includes the steps of: forming a resin film having micro-particles dispersed therein on a surface of a substrate; forming a protrusion dummy pattern on the resin film by etching the resin film using the micro-particles in the resin film as a mask while gradually etching the micro-particles; and forming a protrusion pattern on the surface of the substrate by etching back the surface of the substrate together with the resin film having the protrusion dummy pattern formed thereon, and transferring a surface shape of the protrusion dummy pattern formed on a surface of the resin film to the surface of the substrate.

The present invention discloses an improved method of LED reflector manufacturing process where the method includes providing a substrate, wherein said substrate comprises a reflector unit, and a Light Emitting Diode; providing a shield member with ferromagnetic property; placing said shield member over the desired area of over the substrate; providing a magnet where said shield member is attracted to; placing said magnet immediately below the substrate wherein said magnet is capable of immobilizing the shield member over the substrate; performing a vacuum deposition coating; and removing the magnet and the shield member.

The present invention provides a compact and high-performance image pickup lens having a fast F-number and capable of suppressing shading by using a curved projection surface. An image pickup lens 10 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive or negative refractive power, a fourth lens L4 having a positive or negative refractive power, and a fifth lens L5 having a negative refractive power. With regard to the fifth lens L5 among these lenses, at least one surface is aspherical. The above-described image pickup lens 10 satisfies a conditional expression (1): −2.50<f5 / f<−0.10 . . . (1) where f5 is a focal length of the fifth lens L5 and f is a focal length of the entire system of the image pickup lens 10.

The invention discloses a lighting device, image reading apparatus, and image forming apparatus, which can effectively utilize a light quantity of a point source when a point source with little light quantity is used as a light source of a reading device. A lighting system is provided with a point source 32 emitting light to the surface of a document which is located on contact glass 12 and becomes a reading object, and a condensing body 33 which is arranged forward in the direction of emission of light emitted from the point source 32 and which condenses light emitted from the point source 32 within a reading width in the direction of a sub-scanning direction at the time of document reading. The condensing body 33 is arranged in a direction in which angles of all lights passing through the condensing body 33 are less than a critical angle '[theta]' totally reflected by the contact glass 12. Thus, all of the lights emitted from the point source 32 through the condensing body 33 are irradiated to the surface of the document without total reflection at the contact glass 12, thereby enabling all of the lights emitted from the point source 32 to be effectively used for lighting the document surface.

An imaging device 100 is equipped with an image acquisition unit 51, a first calculation unit 52 and a correction information calculation unit 53. The image acquisition unit 51 acquires image data including a luminance component and color components, via an optical system. The first calculation unit 52 detects shading of the luminance component included in the image data, and detects shading of the color difference components. The correction information calculation unit 53 calculates luminance shading correction coefficients and color difference shading correction coefficients. The correction information calculation unit 53 then converts the calculated color difference shading correction coefficients so as to have predetermined ratios with respect to the calculated luminance shading correction coefficients. A correction processing unit 62 corrects plural sets of image data on the basis of the converted color difference shading correction coefficients, and then performs pixel addition of the images.

The deposition device according to the present invention includes: a deposition source for containing deposition materials; and a plurality of nozzles arranged on one side of the deposition source along a first direction and used for spraying the deposition materials onto an opposite substrate. The deposition source is divided into a central area and peripheral areas at two ends of the central area based on the first direction. The deposition device further includes: detachably formed on the nozzles arranged on the respective peripheral regions, and such that an end surface for spraying the deposition substance is formed to form an inclination with the substrate surface along the first direction Angle and the top of the nozzle toward the outside of the deposition source. According to the embodiments of the present invention, by increasing the incident angle of the deposition material incident on the substrate, the shadow phenomenon of the deposition material penetrating into the deposition mask and the substrate can be suppressed, the deposition margin can be reduced, and the deposition uniformity and deposition efficiency can be improved. Thereby, high resolution of the organic light emitting display device can be easily realized.