34results about How to "Increase lighting levels" patented technology

Endoscopic illumination and imaging systems for enabling observation of both the forward and rearward directions in a lumen using only a single imaging device. According to one implementation, the system utilizes the effects of a partially reflective mirror to respectively transmit and reflect light from the different portions of the lumen or cavity, and uses separate groups of illumination sources to illuminate one or the other section of the lumen, such that the illuminated section is preferentially imaged by virtue of its increased light level. In a second implementation, electrically switched mirrors are used, having properties switched between a transmissive and a partially reflective state, such that the mirror can be switched between imaging the regions forward of the camera when in a transmissive state, and imaging the regions rearward of the camera when in a reflective state. A mechanically swiveled mirror is described for the same purpose.

A light guide device for illumination, lighting and display purposes that exhibits an output light having a predetermined, and preferably uniform, angular luminance profile is described. The device comprises a light guide (13) suitable for guiding light coupled thereto and a plurality of extraction features (10, 11) located on one or more surfaces of the light guide. The plurality of extraction features comprises an interleaved pattern of first (11) and second extraction features the arrangement of which provides a means for defining the predetermined angular and spatial luminance profiles for the output light. The device allows for a uniform angular luminance profile to be produced that is maintained even when the light guide is curved or bent.

Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.

A resin composition for sealing an optical device is provided. The composition includes (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 3×103, having an average composition formula: R1a(OX)bSiO(4-a-b) / 2 wherein, R1 represents an alkyl, alkenyl or aryl group of 1 to 8 carbon atoms, X represents a hydrogen atom, or an alkyl, alkenyl, alkoxyalkyl or acyl group of 1 to 8 carbon atoms, a is a number within a range from 1.05 to 1.5, b is a number that satisfies 0<b<2, and 1.05<a+b<2, (ii) a condensation catalyst, and (iii) inorganic fine particles. The composition is excellent in light extraction efficiency from semiconductor light emitting elements, and useful for sealing LED and like.

A light guide plate structure including a main body, a low-refraction index layer, and a collimation lens film is provided. The main body has a side incident surface on a sidewall thereof. The low-refraction index layer is bonded to an upper surface of the main body. A refraction index of the low-refraction index layer is smaller than a refraction index of the main body. The low-refraction index layer has a plurality of through holes therein. The through holes are filled with a material, and the refraction index of the material is close to the refraction index of the main body. The collimation lens film is disposed on an upper surface of the low-refraction index layer and has a plurality of lens structures aligned to the through holes respectively for transforming a light beam entering the collimation lens film via the through holes into a parallel light beam projecting upward.

A battery-powered light level sensing device comprises a light level sensor 1 and a wireless transmitter 3 in data communication with the light level sensor and configured to transmit light level information from the light level sensor 1 to a lighting controller for a room. The sensing device also includes attachment means adapted to attach the sensing device to the glass of a window defining a boundary of the room with the light level sensor positioned to sense the ambient light level outside the room.

The invention provides an environment-friendly PVC (Polyvinyl Chloride) foaming ceiling panel and a preparation method thereof. The environment-friendly PVC foaming ceiling panel comprises the following components in parts by weight: 90-110 parts of PVC resin, 5-10 parts of polylactic acid, 7-12 parts of polycaprolactone, 10-20 parts of polyester fiber, 50-70 parts of barium sulfate, 3-7 parts of plasticizer, 5-11 parts of stabilizer, 1.7-5 parts of titanium dioxide, 0.6-2 parts of PE (Poly Ethylene) wax, 2-5.5 of processing modifier, 1.4-3.2 parts of anti-impact modifier, 0.7-1.5 parts of composite foaming agent and 20-30 parts of sepiolite. The environment-friendly PVC foaming ceiling panel provided by the invention has the characteristics of environmental friendliness, good weather fastness, high fire resistance, strong scratch resistance, sound insulation, thermal insulation, dust prevention, noise absorption, insect prevention and light reflection and is very suitable for serving as an indoor ceiling.

This invention provides a method of face recognition and a device for implementing said method, the method comprising the steps of: (a) performing a face recognition algorithm on an image of a user to determine an identity of the user, the image having an illumination level; (b) determining if a reliability measurement of the identity of the user determined by the face recognition algorithm meets a threshold indicating reliable identification and, if the reliability measurement is below the threshold indicating reliable identification; (c) receiving a new image of the user, the new image having an adjusted illumination level; and (d) performing a further face recognition algorithm on the new image of the user to determine the identity of the user.

An improved security system incorporating a video flashlight for data acquisition (image data and audio data) by a security officer. The video flashlight includes a video camera, a transmitter and a power supply, in addition to the ordinary flashlight features. The camera converts an image or a series of real-time images into electronic form that is broadcast by the transmitter. A remote unit having a receiver and data capturing equipment receives the broadcast data and converts it back into electronic form. The capturing equipment includes one or more of the following: a repeater, a recorder or a monitor. In one embodiment, the security system is used by law enforcement personnel, with the remote units located in police stations and in police cars. The monitor is positioned in the passenger compartment of the police car, with the recorder locked in the trunk.

A method of grinding a semiconductor nanocrystal-polymer composite, the method including obtaining a semiconductor nanocrystal-polymer composite including a semiconductor nanocrystal and a first polymer, contacting the semiconductor nanocrystal-polymer composite with an inert organic solvent; and grinding the semiconductor nanocrystal-polymer composite in the presence of the inert organic solvent to grind the semiconductor nanocrystal-polymer composite.

Provided is a resin composition for sealing an optical device that has favorable curability, exhibits excellent levels of heat resistance, ultraviolet light resistance, optical transparency, toughness and adhesion, and yields a cured product that enables an improvement in the light extraction efficiency from a semiconductor light emitting element at a high refractive index.The above resin composition for sealing an optical device comprises:(A) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 3×103, represented by an average composition formula:R1a(OX)bSiO(4−a−b) / 2 (wherein, each R1 represents, independently, an alkyl group of 1 to 6 carbon atoms, an alkenyl group of 2 to 6 carbon atoms, or an aryl group of 6 to 10 carbon atoms, each X represents, independently, a hydrogen atom, or an alkyl group, alkenyl group, alkoxyalkyl group or acyl group of 1 to 6 carbon atoms, a represents a number within a range from 1.00 to 1.5, and b represents a number that satisfies 0<b<2, provided that 1.00<a+b<2),(B) an aluminum chelate compound, and(C) fine particles of a metal oxide sol.

The invention aims at providing a tunnel bituminous pavement light color functional layer based on a light color cement material. The functional layer is characterized by comprising the light color cement material and a broken stone material, wherein the light color cement material is formed by mixing a component A and a component B in a mass ratio of 1:1, wherein the component A and the component B have specific compositions. The tunnel bituminous pavement light color functional layer based on the light color cement material has excellent track-resisting capacity and water damage resisting capacity; and the drawing and bonding strength of the light color cement material is obviously improved, the adhesion between the light color cement material and the stone material is improved further, so that the functional layer has more excellent structural integrity and road surface functionality.

Apparatus and method for using a light source having spatially separated light emitting areas emitting light at different wavelengths to incapacitate a subject by a pattern of temporal flashing and / or color flashing of the light source. Reflectors adapted for use with spatially separated light substrates provide for light concentration from lower powered optical sources.

A method of grinding a semiconductor nanocrystal-polymer composite, the method including obtaining a semiconductor nanocrystal-polymer composite including a semiconductor nanocrystal and a first polymer, contacting the semiconductor nanocrystal-polymer composite with an inert organic solvent; and grinding the semiconductor nanocrystal-polymer composite in the presence of the inert organic solvent to grind the semiconductor nanocrystal-polymer composite.

Described is a dynamic emergency exit sign comprising one or more pictograms and at least one light source for accentuating one or more of the one or more pictograms either singly or in combination, wherein at least one light source is controlled by signals from evacuation computer modelling software to assist occupants egress in emergency or other critical situations.

The invention aims at providing a tunnel bituminous pavement clearing functional layer, characterized in that: the layer comprises a clearing binder material and a clearing macadam material, wherein, the clearing binder material comprises a component A and a component B with the weight ration of A to B being 1 to 1, and the clearing macadam material comprises market artificial white stones satisfying the specific performance indexes. The invention has the advantages of excellent rutting resistance, low temperature crack resistance and water damage resistance, wherein, the drawing and bonding intensity of the clearing binder material is greatly increased, the specially-produced clear macadam has bright color and good angularity, the adhesiveness between the bonding material and the stones is greatly improved, thus the structural integrity and functionality of the surface of the pavement are excellent.

The invention discloses a motor winding detection device for a large workshop inspector. The motor winding detection device includes a box body, a mini camera and a wireless transmission device. The box body is in rotary connection with a box cover, and the outer wall of the box body is connected with a handle. A storage tank is located below a liquid crystal display screen, and a detection device is arranged in the storage tank. The tail end of the detection device is internally movably connected with a pull bar, an LED lamp switch is embedded in the outer wall of the tail end of the detection device, and an LED lamp bead is arranged on the head end of the detection device. The LED lamp bead and the LED lamp switch are electrically connected. A magnifying glass sheet is embedded in the outer wall on the top of the head end of the detection device. The mini camera is mounted on the bottom of the head end of the detection device, and the wireless transmission device is installed at the bottom of the mini camera. The box body and the box cover of the motor winding detection device are in a suitcase structure as a whole after being integrated. The whole device is easy to carry for an inspector walking in a large workshop and is more convenient for use.

The invention discloses a rope arrangement fault detection method and device based on laser ranging. The method includes step 1, rotating a rotary table to enable a laser sensor to scan the whole ropearrangement area on the surface of the winding drum along the length direction of the winding drum, and acquiring the position parameters of the scanning points in the rope arrangement area under a two-dimensional coordinate system; step 2, sequentially selecting the characteristic point on each winding rope in the rope arrangement area along the length direction of the winding drum, and acquiring two-dimensional coordinates of each characteristic point according to the position parameters of each scanning point; step 3, calculating the number of layers of the winding ropes of each characteristic point according to the obtained two-dimensional coordinates of each characteristic point according to the corresponding relation between the rope winding layer number of the characteristic pointand the Y-axis coordinate of the characteristic point; step 4, calculating the layer number characteristic value y3 according to the obtained number of layers of the winding ropes of each characteristic point (J); and step 5, obtaining a fault conclusion according to the calculated layer number characteristic value y3 (j). According to the method, the conclusion that whether a fault occurs or notcan be accurately obtained, and the rope skipping fault or the rope clamping fault is obtained is obtained.

A method for an alarm silencing or suppression routine following activation of a wake-up alarm on an electronic device (42). The method comprises, following the alarm activation, monitoring (14) light levels at a light sensor (44) of the device and automatically silencing (20) or otherwise suppressing the alarm signal responsive to sensing (16) a light level at the sensor above a pre-defined threshold. Following alarm signal suppression, a further confirmatory monitoring period follows in which light levels at the sensor continue to be monitored (22). If they fall to below a further predefined threshold (26), or below the original silencing threshold, the alarm signal is reactivated (28). This ensures that a user has not returned to a darkened environment a short space of time after alarm silencing, which might lead to the user falling back to sleep.

The invention aims to provide a tunnel asphalt pavement bright-color functional layer based on bright-color gravel. The tunnel asphalt pavement bright-color functional layer is characterized by comprising a bright-color gravel material and a cementitious material, wherein the bright-color gravel material adopts a commercial artificial white stone material meeting a specific performance requirement index. The tunnel asphalt pavement bright-color functional layer has excellent rutting resistance and water damage resistance. The specially-made bright-color gravel has bright color and luster and excellent angularity, so that the excellent adhesivity of specially-made bright-color gravel to an asphalt-based cementitious material is achieved, and excellent structural integrity and pavement functionality are achieved.

The invention discloses a shower head type LED lamp. The shower head type LED lamp comprises a lamp power base, a lamp base, a heat dissipation base, a shower head type lamp cap, a plurality of LED lamp cores and a waterproof cover, wherein the lamp base is installed on the lamp power base, the shower head type lamp cap is installed on the lamp power base through the heat dissipation base, the heat dissipation base is uniformly connected between the lamp base and the shower head type lamp cap in a gear shape, the LED lamp cores are uniformly distributed on the shower head type lamp cap, and the waterproof cover is installed on the shower head type lamp cap. According to the mode, the shower head type lamp cap is adopted, and therefore the illumination degree of light sources is improved; the waterproof cover is installed and has the water protection function, and therefore the requirements of high-humidity environment illumination such as cold storage illumination and plant growth illumination and the requirements of underground illumination can be met, and the heat dissipation effect is good in the use process; the waterproof cover has the effect of resisting the high temperature, and therefore the service life of the waterproof cover is prolonged.

The invention relates to a road reflective energy-saving pavement structure in a tunnel and a paving method thereof. The pavement structure comprises an original soil layer, a gravel layer, a rubble layer, a coarse asphalt concrete layer and a fine asphalt concrete layer which are sequentially paved from bottom to top, a reflective layer is paved on the fine asphalt concrete layer, the reflective layer is composed of a plurality of white ceramic particles consistent in shape and particle size, each white ceramic particle comprises a green body, the green body is provided with a multi-diamond surface, a texture layer is formed on the multi-diamond surface, the surface of the texture layer is covered with a reflecting layer, and the surface of the reflecting layer is covered with a transparent protective layer. White ceramic particles of the pavement structure can be fully embedded and extruded into skeleton gaps of a fine asphalt concrete layer mixture, the whole pavement structure is combined more compactly after compaction, the rut resistance and the water damage resistance of a pavement are effectively improved, meanwhile the whole reflective effect of the pavement is better, and the reflecting effect of the pavement is more controllable.