954results about How to "Prevent glare" patented technology

This invention relates to a luminaire (106), which has a housing (103) with an opening (111) at a light output side, a reflector (105) mounted in the housing, and facing the light output side, a louver (107) mounted at the opening of the housing, and LEDs (109) mounted in the louver, such that the emitted LED light exits the luminaire only after reflection against the reflector, thereby providing indirect light output.

A case for portable electronic devices including smartphones includes a feature to prevent glare from a flash from affecting images and video captured by a camera lens. Smartphones have telephony, Internet connectivity, and camera and video features. Photos and video can be uploaded through the Internet or sent to other phones. A case has a hole for a camera flash of the smartphone to pass through. The edging of the hole is colored black or another dark color to prevent glare from appearing in the photos or video taken by the smartphone when using the camera flash.

A reflective illumination device is disclosed, which is comprised of a light-guiding screen with light reflecting ability and at least a directional light source; wherein the light-guiding screen includes a reflecting surface having a semi-Fresnel lens structure arranged thereon. The semi-Fresnel lens structure, being designed basing on the principle of Fresnel lens, is the equivalent of a parabolic mirror that has spiral cut ridges for focusing light to a focal point, whereas the profile of the ridges can be a planar surface, a curved surface or the combination thereof. By arranging the reflecting surface with semi-Fresnel lens structure at the bottom of the light-guiding screen and each light source at a circumferential side wall of the light-guiding screen, the light beams emitting from each light source can be reflected out of the light-guiding screen by a specific angle as the direction of the light beams is adjusted to pour on the semi-Fresnel lens structure by a specific angle matching the configuration of the same.

The variable transmissivity window system comprises a camera for detecting light from a light source, a transmissivity control unit for controlling the transmissivity of light passed through the windshield, and a transmissivity modifying unit for modifying the transmissivity of each of blocks into which the windshield is divided. The camera calculates light source information including the direction, size and intensity of the light source. The transmissivity control unit calculates a position of the windshield block for the transmissivity to be modified, a range of the position thereof for the transmissivity to be modified, and a value for the transmissivity. The imaging unit decides whether or not the light source gives glare to the occupant, and when the imaging unit decides that the light source gives glare to the occupant, the imaging unit changes a glare decision threshold according to an ambient light level outside the vehicle.

Disclosed is a microscope for operation. This microscope for operation comprises a front lens 15 disposed between an eye 8 to be operated and an objective 14. The front lens collects an illuminating light P to guide the collected light within the eye for illuminating an interior of the eye. An operator performs an operation within the eye through an eyepiece 39. A refracting power of the front lens 15 is within a range of 30D to 50D.

To provide an auto light system which allows the driver to confirm the head light beam direction and range easily and to switch the light state easily in the auto light system for controlling the head light beam direction and range. The auto light system comprises a light control means 4 for controlling the light 6 of the vehicle, a manual light operating means 8 for operating manually the light 6, said manual light operating means 8 operated in response to the output signal from the light control means 4, and a display means 7 for displaying the control state of the light 6 controlled by the light control means 4.

The present invention provides a headlight control apparatus which suppresses a feeling of strangeness given to a driver of an own vehicle by hunting due to reflector light while preventing a preceding vehicle and an on-coming vehicle from being dazzled, based on a video image obtained by a camera. The headlight is controlled by detecting the position of a light spot in the image captured by the camera to perform irradiation with a pattern which reduces the light quantity of a certain area above the detected light spot. Thereby, even if hunting occurs due to the reflector light, the irradiation light quantity of an entire irradiation area of the headlight does not vary, but only the irradiation light quantity for a partial area above a reflector varies, and therefore, the feeling of strangeness given to the driver can be suppressed.

Wearable light device for providing additional light for activities in low light includes a wearable mount (20) including a light system (30) and power source (40). Light system (30) includes one or more arrays of light sources such as light-emitting diodes (33). Photo sensor (34) detects ambient light or emitted light returned from a reflective surface and causes control circuit (45) to dim light emission.

An adhesive layer composed of at least an ionizing radiation curable resin binder, a thermoplastic resin binder and two or more matting agents having different average diameters is formed on a transparent polymer film to obtain a support film for a transparent conductive thin film. Alternatively, a transparent hard coat layer containing at least an ionizing radiation curable resin binder and,a matting agent having an average diameter of 1-15 mum, and an adhesive layer containing at least an ionizing radiation curable resin binder, a thermoplastic resin binder and a matting agent having an average diameter of 5-50 nm are formed on a transparent polymer film. The thus obtained support film is excellent in durability when the transparent conductive thin film is formed thereon and prevents occurrence of a Newton-ring, which is produced in a touch panel of the conventional liquid crystal display. The support film, when used in a touch panel of a color liquid crystal display, prevents glare of the color screen and is suitable for use in touch panels of both monochrome and color liquid crystal displays.

A backlight device includes: a light source; a light-guiding plate; and a reflector. The light-guiding plate has a first principal surface and a second principal surface provided so as to face each other, and an end surface. The reflector is disposed so as to illuminate the end surface with light from the light source. The light-guiding plate has an output region on the first principal surface, for outputting light inputted from the end surface. An anti-reflection member is provided above the first principal surface in a region between the output region and the end surface.

A hard-coated antiglare film is provided that is excellent in antiglare properties and image sharpness and that can prevent glare from occurring. The hard-coated antiglare film includes a transparent plastic film substrate and a hard-coating antiglare layer that is formed on at least one surface of the transparent plastic film substrate and that is formed of fine particles and a curable hard-coating resin. The hard-coating antiglare layer has a thickness in the range of 20 to 30 μm. The fine particles have a weight average particle size in the range of 7 to 15 μm. The difference obtained by subtracting the refractive index of the fine particles from that of the curable hard-coating resin that has been cured is in the range of −0.06 to −0.01 or 0.01 to 0.06.

An antiglare film applicable to polarizers or displays includes a light-transparent resin, first light-transparent particles dispersed on surface of the light-transparent resin and second light-transparent particles dispersed inside the resin. The first light-transparent particles have a same refractive index as that of the resin and particle diameters of 9 to 500 nanometers that provide a less roughness surface of the resin in order to prevent from large angle diffusion to the interior light and improve clarity of image. The second particles have a different refractive index from the resin so as to diffuse the exterior light that comes to the antiglare film so as to decrease glare. The antiglare film can be made by one time of coating. The two layer light-transparent particles provide light interference and achieve a low reflectivity.

The invention provides an intelligent dimming module and an intelligent dimming LED lamp and a control method thereof, and relates to the field of LED electronic circuits. The intelligent dimming module comprises a power supply conversion module, a Zigbee control module, a PWM control module and an intelligent dimming module. The power supply conversion module is connected with a power supply, and is connected with the Zigbee control module and the PWM control module; the intelligent dimming module is connected with the Zigbee control module, the Zigbee control module is connected with the PWM control module, the PWM control module is connected with an LED lamp, the intelligent dimming module receives an input signal of a user and outputs a corresponding control signal, and the control signal is transmitted to the PWM control module through the Zigbee control module and is used for controlling working of the LED lamp. The brightness of the LED lamp is adjusted optionally in all-color range; and the intelligent dimming LED lamp is matched with an intelligent household system and can be applied to various scenes.

A lighting device (1) comprises a light source (2) and a lens (3, 23, 33, 43, 53, 63) positioned in front of the light source (2). The lens (3, 23, 33, 43, 53, 63) is provided with a light entrance surface on a side facing the light source (2) and a light exit surface (14, 38) on a side remote from the light source (2). The lens (3, 23, 33, 43, 53, 63) comprises a number of strip-shaped interconnected elongated light guiding elements (4, 24, 34, 54, 64), of which first ends (7, 27, 37, 57) and spaced apart second ends (5, 25, 35, 55, 65) comprise the light entrance surface and light exit surface, respectively. Light beams emitted by the light source (2) are transmitted by total internal reflection in the elongated light guiding elements (4, 24, 34, 54, 64) from the first ends (7, 27, 37, 57) to the spaced apart seconds ends (5, 25, 35, 55, 65).

The invention discloses a method for manufacturing light diffusion sheets. The invention is characterized in that the method comprises the following steps of (1) manufacturing an imprint die core with at least one microlens structure; (2) designing computer-based imprint control programs, imprint parameters and pattern files; (3) imprinting the die core of the step (1) on a substrate to be imprinted in a first imprint work position according to the control programs and the pattern files of the step (2), by using hot nanoimprint or ultraviolet-imprint lithography, to obtain the relevant number of concave micro-lenses on the substrate; (4) chaining the position of the imprint die core relative to the imprinted substrate according to the imprint parameters until the next imprint work position; (5) repeating the steps (3) and (4) until all the imprint procedures are completed. The invention can directly imprint concave micro-lenses on the substrate by hot nanoimprint or ultraviolet-imprint lithography, allows the light dispersion layer to be integrated with the substrate as a whole, avoids the problems of unstable adhesion, poor diffusion effect due to the difference in thermal expansion coefficient and physical deformation, and efficiently improves the performance of light diffusion sheets.

The invention discloses headlamp adaptive control method and device. The method comprises the steps of: (1) acquiring the current speed v of an automobile in real time, and acquiring the safe stopping distance S of the automobile at the current speed; (2) acquiring a horizontal deflection angle omega corresponding to the optimum lighting position of the headlamp; (3) acquiring a vertical deflection angle beta corresponding to the optimum lighting position of the headlamp; and (4) outputting control signals to control the turning of the headlamp in real time. The device comprises a control unit (1), and a detection unit (2) and a driving mechanism (3) which are respectively connected with the control unit (1), wherein the detection unit (2) comprises a speed sensor (21), a steering wheel angel sensor (22), a front ride height sensor (23), a rear ride height sensor (24), a sunshine and rain sensor (25) and an acceleration sensor (26). The invention has the advantages of large lighting range, good lighting effect, no reflected glare, simple structure, accurate control, good environmental suitability, safety, reliability and comfortable drive.

An anti-glare LED illuminating apparatus belongs to the semiconductor illuminating technology field and is characterized by being provided with an anti-glare LED illuminating unit U, which comprises an LED light source 1, a combined type reflector 2 and a shielding lace bar 3, or an LED anti-glare illuminating module or an LED anti-glare illuminating die set consisting of the anti-glare LED illuminating unit, the LED light source is arranged between two adjacent shielding lace bars 3, the inner wall of the combined type reflector 2 is an asymmetry reflection plane, optical intensity is distributed asymmetrically along the direction vertical to the combined type reflector 2 axes, a light distribution curve is of lateral wing type, the shielding lace bar 3 limits the glare generated by the LED light source 1 along the axial direction of the combined type reflector 2. The invention has scientific design, reasonable structure, easy production, convenient assembly and good anti-glare effect, reduces the difficulties of manufacturing, processing and assembly and production cost, thus being beneficial to large-scale application.

An improved lamp fixture with anti-glare function is disclosed, which comprises: a lamp; a light source; and a light-control unit, composed of a semi-Fresnel microstructure and a light-control microstructure; wherein the light source and the light-control unit are mounted on the lamp; and the semi-Fresnel microstructure is used for diffusing/collimating light of the light source while the light-control microstructure is used for controlling the resulting lighting angle. With the aforesaid lamp fixture, not only glare can be prevented, but also uniformity of the lamp fixture is improved.