70results about How to "Reduce glare effects" patented technology

A self-contained interactive video display system. A projector projects a visual image onto a screen for displaying the visual image, wherein the projector projects the visual image onto a back side of the screen for presentation to a user on a front side of the screen. An illuminator illuminates an object near the front side of the screen. A camera detects interaction of an illuminated object with the visual image, wherein the screen is at least partially transparent to light detectable to the camera, allowing the camera to detect the illuminated object through the screen. A computer system directs the projector to change the visual image in response to the interaction.

A self-contained interactive video display system. A flat-panel display screen displays a visual image for presentation to a user on a front side of the flat-panel display screen. A first illuminator illuminates the flat-panel display screen with visible light. A second illuminator illuminates an object. A camera detects interaction of an illuminated object with the visual image, wherein the camera is operable to view the object through the flat-panel display screen. A computer system directs the projector to change the visual image in response to the interaction.

A self-contained interactive video display system. A projector projects a visual image onto a screen for displaying the visual image, wherein the projector projects the visual image onto a back side of the screen for presentation to a user on a front side of the screen. An illuminator illuminates an object near the front side of the screen. A camera detects interaction of an illuminated object with the visual image, wherein the screen is at least partially transparent to light detectable to the camera, allowing the camera to detect the illuminated object through the screen. A computer system directs the projector to change the visual image in response to the interaction.

A method of providing visual documentation and information for a surgical procedure. The method includes, providing at least one video camera for generating a video signal in a digital format, capturing an image of an eye and displaying the image on a monitor. A first template is created having a graphical content pertinent to the eye. The first template is displayed such that the first template is overlaid contemporaneously with the image of the eye on a display monitor.

A method and system are disclosed for producing a reduced-glare image. The method and system use at least two light sources located a selected distance apart from each other. An image acquisition device acquires a first image of an object using illumination from the first light source, but not the second. Then the image acquisition device acquires a second image of the object using illumination from the second light source, but not the first. The two images, having glare at different pixel locations, are then used to form a reduced-glare image.

The screen of the invention comprises an oriented film having a direction of maximum scattering (scattering axis) and a direction of minimum scattering (transmitting axis) for linear polarized light, and containing macromolecular fine particles in a macromolecular matrix, wherein the refractive index of the macromolecular fine particles is within a specified range and the matrix and macromolecular fine particles satisfy a specified relationship. The screen reproduces bright and high-quality projected images with virtually no moire effect or glare, and is therefore highly useful as a transmissive or reflective projector screen.

A display device having integral photo-sensors for touch sensing is used to detect and mitigate the effects of veiling glare that obscures information being conveyed by the display device. The photo-sensors are periodically sampled to identify optically saturated regions of the display device. If the saturated regions of the display device are being used to convey relevant information, one or more counter-measures are initiated to mitigate the effects of the glare. The counter-measures may include: increasing the display brightness at least in the identified glare region, tilting the display or its cover lens away from estimated direction of the glare source, re-sizing or re-formatting the displayed information, using an alternate display device to convey the information, and presenting the information with a different layer of a multi-layer display.

The invention discloses a computer system, a display device and a backlight control method. The use behavior (such as the position of the user) of a user and the environment variables (such as the position of an environment light source) are detected through the display device provided with an image acquisition system by using the judgment technique of computer vision so as to manage the power source of the display, and thus, the purpose of energy saving is achieved.

The invention relates to an anti-dazzle principle based design method for traffic engineering facilities at a road tunnel exit. The method is characterized in that tunnel exit anti-dazzle facilities are arranged in front of the tunnel exit to ease intensive brightness transition caused by insufficient illuminating lamps at the tunnel exit; coloured painting materials of which reflection coefficients gradually reduce are arranged on the tunnel ceiling, side walls and roads from the top down to ease brightness transition and beam divergence at the tunnel exit, so as to lift the dazzle area, reduce the dazzle area below the visual line of a driver and increase the visual adaptation time; horizontal road direction lines and road lane keeping lines are arranged on the road, and side wall vertical direction lines and side wall double-layered contour marks are arranged on the side walls, so as to form a closed mid-frequency retroreflective information stream together; high-frequency red and white marked lines arranged on maintenance road edges and road side reflective raised route markers form a high frequency visual information stream to increase the driver's instantaneous velocity sensation, and promote the driver's speed feeling and distance feeling, and accordingly, the coordination and unification of the tunnel lighting energy conservation and tunnel traffic safety are realized.

An ultraviolet ray and infrared ray-absorbing glass composition includes the following basic glass components (weight ratio): 60% to 75% of SiO2, 8% to 20% of Na2O, 3% to 12% of CaO, 0.1% to 5% of Al2O3, 2% to 5% of MgO, 0.02% to 7% of K2O, 0.1% to 5% of BaO, 0.01% to 0.4% of SO3 and the following ultraviolet ray and infrared ray-absorbing glass main body coloring and coordinating part: 0.22% to 1.35% of Fe2O3, 0.001% to 0.8% of ZrO2+HfO2, 0% to 0.5% of Cl, 0% to 2% of B2O3, 0.01% to 0.8% of TiO2, 0.001% to 0.06% of CuO, 0% to 2.0% of Br, 0% to 0.02% of MnO, 0% to 2.0% of F, 0.001% to 0.5% of SrO, and 0.005% to 2.2% of CeO2. The reduction oxidation ratio of Fe2O3 in the glass composition is 0.4 to 0.8.

An interior lamp is provided for illuminating an interior of a vehicle having a glass surface, particularly a glass roof. At least one such interior lamp is integrated in the laminated glass of the glass surface.

A light-uniforming anti-glaring structure includes a light-polarizing reflection unit and a light-polarizing position adjusting unit. The light-polarizing reflection unit includes a multilayer reflector composed of a plurality of inter-stacked polymer films. One of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠NY≠NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction. The light-polarizing position adjusting unit is coupled with the light-polarizing reflection unit for adjusting the position of the light-polarizing reflection unit.

The invention discloses a design method for an optical lens for an LED automobile front fog lamp. A cavity for holding an LED light source is formed in the lens. The LED light source emits light right towards the cavity of the lens. The light from the central portion of an LED firstly penetrates through a spherical surface on the top of the inner wall of the cavity, and the direction of the light does not change when the light enters the lens; then the light is refracted on a free-form surface in the middle of the top of the outer side of the lens to form emergent light irradiating an illumination surface. The light from the edge portion of the LED is firstly refracted on a columnar surface of the inner wall of the cavity of the lens to enter the lens, then is totally reflected on a total reflection free-form surface on the outer side of the lens, and finally is refracted on a ring plane of the top edge of the lens to irradiate the illumination surface. The lens is simple and compact in structure, small in size, high in light energy utilization rate and low in glare effect, and the light distribution requirement of the automobile front fog lamp at the 'F3' level in the Economic Commission for Europe Regulation 19 Revision 15 (ECE R19 Rev15) is met.

The invention discloses an LED (light emitting diode) ceiling spot lamp. The LED ceiling spot lamp is provided with a rotating ring, wherein the rotating ring sleeves a spot lamp body; two opposite sides of the spot lamp body are hinged to two opposite sides of the rotating ring; the spot lamp body can rotate around a hinge point between the spot lamp body and the rotating ring in the rotating ring so as to fulfill the aim of adjusting an irradiation angle; a surface ring sleeves the rotating ring; the other two opposite sides of the rotating ring are transversely hinged to a pin shaft; an annular slot is formed in the inner ring wall surface of the surface ring; the outer end of the pin shaft is transversely inserted into the annular slot and can slide in the annular slot, so that the rotating ring can drive the spot lamp body to the spot lamp body to rotate together by 360 degrees in the surface ring around a center shaft of the surface ring; furthermore, the rotating ring is hinged to the surface ring through the pin shaft, so that the rotating ring can also drive the spot lamp body to rotate together in the surface ring around the pin shaft; the three rotating modes can be either used independently or used in a stacking manner, so that universal rotation is realized, and therefore, the spot lamp body realizes irradiation towards any direction, and the irradiation angle is wide in adjustment range.

The invention discloses an LED flat light source structure, which comprises an aluminum substrate; the aluminum substrate is adhered with a reflective membrane and is provided with a plurality of luminous bodies; the front of the plurality of the luminous bodies is provided with a light guide plate for diffusing light; the front of the light guide plate is provided with a diffuse transmission plate; and the wall of the light guide plate close to the luminous bodies is provided with freedom surfaces which correspond to the luminous bodies and are used for refracting the light. Illuminators with the two-dimensional and rotationally symmetrical freedom surfaces refract the light so as to increase the radiation area of LED point sources and reduce the glare effect; the LED luminous bodies and the illuminator are arranged one-to-one, so that the flat luminous source structure is changeable according to the actual requirement, is convenient to extend, and can be used in a plurality of occasions.

The invention discloses a method for designing an LED plane light source structure, which comprises the following steps: in step of designing a light source, establishing a relation equation between the energy distribution of the light source and the energy distribution of a target illuminated surface; in step of designing beam, establishing a relation equation between the beam of each angle of the light source and the beam of each point of the illuminated surface; in step of designing entity models of a free curved surface of a transparent body, calculating two relation equations and combining a calculating result with reverse engineering modeling to obtain the entity models of the free curved surface of the transparent body; and in step of designing a light guide plate, combining the entity models of the free curved surface of the transparent body to form the light guide plate with an integrated structure through various arrangement modes. The manufactured LED plane light source structure has high utilization rate of light energy, effectively reduces the effect of dizziness, improves the brightness uniformity of the plane light source and the illumination uniformity of the irradiated target surface and has attractive appearance, practicality and energy conservation.

Eliminate or reduce the impact of glare in printed information tag recognition applications using single- and multi-pose external illumination coupled with intelligent processing. A shelf imager can acquire shelf images for printed information tag localization and recognition. An external illuminator can provide at least one illumination condition / pose for shelf image acquisition in addition to lighting associated with the enclosed environment. A glare region of interest (ROI) detector can analyze all or a portion of the acquired shelf images for glare to determine whether additional images need to be acquired using different illumination conditions provided by the single- or multi-pose external illuminator or whether full or portion of acquired images need to be analyzed by a printed information tag locator and recognizer. A printed information tag locator and recognizer can analyze all or a portion of the acquired images to localize and recognize data printed on the printed information tags.

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle high beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is an opening; an LED light source is installed at the centre of the opening; one end rightly facing the bottom surface is a light exit port of the reflector; the minority of light emitted by the LED light source directly shines on an illuminating surface, and the majority of the light is reflected by the internal surface of the reflector and then is emergent to the illuminating surface. The light energy emitted by the LED light source is emergent after being reflected by the freeform reflector, so that the loss is reduced and the utilization rate of light energy is improved. The reflector is small in size and has a low glare effect and meets the light distribution requirements in GB5948-1998. In addition, a heat-radiating device and the LED light source are conveniently installed, and the heat dissipation efficiency of the overall lamp is favorably improved.

The invention discloses a balloon lamp which is composed of a lamp socket, an illuminating lamp body, a bracket, a power line, a strut bar, a lampshade and a base, wherein an aeration device is installed in the base; the base and the bottom of the lampshade are connected; one end of the strut bar is connected with the top of the lampshade, and the other end is connected with the base; the lamp socket is installed on the strut bar; the base is provided with an air inlet, an air outlet and an electric wire jacket; the air inlet is connected with the air suction port of the aeration device; the power wire passes through the electric wire jacket of the base to be eclectically connected with the aeration device and the lamp socket; and ambient air is adsorbed into the lampshade by the air inlet and the air outlet. The balloon lamp provided by the invention has large illumination range and lowers glare effect, and the lampshade can shrink when the illuminating lamp is transported, thus occupying small space and bringing convenience for carrying.

The invention discloses an excitation control method for an electro-excitation long-afterglow light-emitting system. A drive control circuit (2) controls an electroluminescence light source (3) to be turned on and emit light in a certain period T and at a duty ratio T0N / T, and excites a long-afterglow light-emitting material (4). There is N discontinuous power-on excitation time segments TON1, TON2,...,TON N in one period, wherein N is greater than or equal to two, and TON is the sum of the TON1, TON2,...,TON N. The method achieves the adjustment of the power-on light intensity of the electroluminescence light source (3) through the changing of a drive current, and enables the light intensity to be within the higher-excitation-power section of the long-afterglow light-emitting material (4). A PWM circuit is used for controlling a mode adjustment period or the duty ratio, thereby controlling the power consumption of the electroluminescence light source (3). The method can reduce the power consumption under the condition that the lowest brightness is not changed, or increase the excitation power of the long-afterglow light-emitting material (4) under the condition that the power consumption is not increased, thereby improving the brightness. Moreover, the method can achieve the design according to the needs, so as to meet various types of needs.

The invention provides an illuminating device for student learning, and relates to the technical field of illumination. The illuminating device for student learning comprises a base; the top of the base is welded with the bottom of a sleeve rod; an inner rod is inserted in the top of the sleeve rod; the top of the inner rod is welded with the bottom of a cross bar; the left side of the cross bar is fixedly connected with one end of a universal joint; the other side of the universal joint is bonded with the top of a lamp cover; a reflecting plate is bonded at the top of the inner wall of the lamp cover; a bulb is fixedly mounted at the bottom of the reflecting plate; and the bottom of the lamp cover is fixedly connected with the top of anti-dazzling glass. In the illuminating device for student learning, the inner rod extends in the sleeve rod, so that the height of the bulb can be controlled and adjusted, the light ray irradiating range can be controlled, and illuminating devices are convenient to use; and meanwhile, the anti-dazzling glass is bonded at the bottom of the lamp cover for diffuse reflection of light rays emitted by a lamp, so that the illuminating area is increased, the light rays are more gentle, the dazzling effect is reduced, and the anti-dazzling effect is achieved.

The invention provides a single light source anti-dazzle LED projection lamp, and belongs to the technical field of illumination. The single light source anti-dazzle LED projection lamp comprises a fixed part; one side of the fixed part is welded with a lamp pole; one side of the lamp pole far away from the fixed part is provided with a LED bulb through bonding; reflectors are arranged on the sideof the fixed part close to the lamp pole around the LED bulb through welding; the internal parts of the reflectors are provided with anti-dazzle glass; the external parts of the reflectors are provided with a lampshade. According to the single light source anti-dazzle LED projection lamp, the anti-dazzle glass and a honeycomb cover are adopted for double processing of transmitted light, so that diffuse reflection of light emitted by the single light source anti-dazzle LED projection lamp is induced, the light is more soft, dazzling effect is reduced; and in addition, anti-dazzle blocking plates arranged on the internal walls of the lampshade through bonding are capable of preventing reflection of the internal walls of the lampshade on light, reducing reflective glare; and the position ofthe lampshade on the fixed part is controllable, so that the lamp shielding angle of the single light source anti-dazzle LED projection lamp is controllable, it is convenient for adjusting of the irradiation range and irradiation brightness of the single light source anti-dazzle LED projection lamp, and the practicability of the single light source anti-dazzle LED projection lamp is improved.

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle low beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is provided with an opening for installation of an LED; one end rightly facing the bottom surface is a light exit port of the reflector; the majority of light emitted by the LED light source is reflected by the internal surface of the reflector and then is emergent to an illuminating plane, and the other light is directly emergent to the illuminating plane. The reflector is divided into an upper part and a lower part; the free-form surface at the upper part of the internal surface of the reflector is mainly used for reflecting the light above a horizontal plane to the illuminating plane below the horizontal plane; the free-form surface at the lower part of the internal surface of the reflector is mainly used for gathering diffused light below the horizontal plane to the illuminating plane below the horizontal plane. The free-form optical reflector for the LED motorcycle low beam has the characteristics of simple structure, convenience in installation and high utilization rate of light energy; light direction can be effectively controlled and the glare effect can be inhibited; and the free-form optical reflector for the LED motorcycle low beam meets the light distribution requirements in GB5948-1998.

An IOL described herein includes an optic and at least a first haptic and a second haptic connected to the optic and extending outwardly therefrom; each haptic is formed with either a frog leg configuration or a running leg configuration, which include a base adjacent the optic, a distal foot portion and an intermediate portion connected between the base and the distal foot, the base being connected to the intermediate portion through a first flexible elbow having an angle in a first circumferential direction relative to the to optic and the intermediate portion being connected to the distal foot portion by a second flexible elbow having an angle in a circumferential direction opposite to the first circumferential direction.

The invention provides a design method of a free-form surface reflector for an LED automobile rear fog lamp. The design method comprises the following steps: initial conditions are set, and a target lighting region is uniformly divided; a light source solid angle is divided, and a mapping relation is established according to the energy conservation law; discrete point coordinates of the free-form surface reflector are calculated; and discrete ordinate points are fitted into a curved surface by utilizing mechanical modeling software. According to the design method provided by the invention, the size of the free-form surface reflector is small, the glare effect is low as a light emitting surface of a light source is vertically installed upwards, and meanwhile, the light distribution requirements of national standard GB 11554-2008 for the LED automobile rear fog lamp can be met. According to the technical scheme provided by the invention, the light emitting surface of the light source emits lights upwards perpendicular to the optical axis direction and the light is reflected by the free-form surface reflector, and finally, the light emerges onto a lighting surface; and the free-form surface reflector has the advantages of symmetry, simple design and high efficiency.

The invention relates to the technical field of traffic safety of expressways and especially relates to an expressway danger-avoiding lane guidance system. The system comprises a four-stage mark guidance system and a four-layer linear guidance system. The four-stage mark guidance system comprises a first danger-avoiding lane forecast sign, a second danger-avoiding lane forecast sign, a curve warning sign, a danger-avoiding lane warning sign, a portal type danger-avoiding lane guide sign and a danger-avoiding lane confirmation sign. The four-layer linear guidance system comprises a warning typelinear guidance mark, a circular base type delineator, a protruding road sign, a rectangular delineator, a flexible warning column and an anti-collision barrel. The four-stage mark guidance system provides perfect way-finding information, a purpose of inducing an out-of-control vehicle to a braking slope bed of a danger-avoiding lane is achieved, and a probability that a truck driver misses the danger-avoiding lane is remarkably reduced. The four-layer linear guidance system realizes contour guidance and horizontal, longitudinal and transverse linear guidance of a danger-avoiding lane sectionand adjacent main line obstacles, and reduces the probability of colliding with a front vehicle and the obstacles.