168results about How to "Uniform distribution of light intensity" patented technology

The light-emitting apparatus includes a light-emitting element, a base body having, on its upper principal surface, a placement portion for emplacing thereon the light-emitting element; a first reflecting member formed in a frame-like shape and attached to the upper principal surface of the base body so as to surround the placement portion; a second reflecting member formed in a frame-like shape and attached to the upper principal surface of the base body so as to surround the first reflecting member; a light transmitting member provided inside the second reflecting member so as to cover the light-emitting element and the first reflecting member; and a first wavelength-conversion layer for converting a wavelength of light from the light-emitting element, the first wavelength-conversion layer being provided inside the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting members.

A lighting apparatus 10 comprising light sources 12a, 12b for emitting light, a plurality of light reflection portions 20 formed on the reflection side for reflecting light incident from the light sources, and a linear photoconductor 14 for causing the light to exit from the exit side opposed to the reflection side, the planes of the plurality of reflection portions being respectively tilted at angles which converge the light to the human eyes watching. Angles of the light reflection portions are set so that exit angles of light exiting from the linear photoconductor are required angles, whereby the lighting apparatus can have a uniform light intensity distribution. The application of the lighting apparatus can provide a liquid crystal display of good display characteristics.

On the rear surface of a transparent molded unit is provided a reflecting member. In a central part of the molded unit are encapsulated light emitting devices. In the vicinity of the central part of the reflecting member is formed a reflecting area that is angularly inclined to the rear surface as it moves to the outer circumferential direction. A toric channel is provided on a light irradiation surface of the molded unit, and a slope total reflection area is provided in its inner circumferential side. Light emanating from the light emitting devices is reflected at the slope total reflection area, and further reflected at the direct output area. Then, after being further reflected at the reflecting area of the reflecting member, the light is guided to the outer circumferential end of the reflecting member, and is outputted forward from the total reflection area by being reflected at the outer circumferential end of the reflecting member.

There is provided a laser projector, including: a laser source section for emitting laser beams; a spatial light modulator which modulates the laser beams to generate image light; a projector lens from which the image light is emitted; a beam shaper which shapes the laser beams into a shape of the spatial light modulator; and a pupil uniformizer which makes a light intensity distribution uniform at an exit pupil of the projector lens, wherein the pupil uniformizer is situated between the laser source section and the beam shaper.

To provide a light emitting element mounting wiring substrate having a light emitting element mounting section on a substrate main body having a front surface and a back surface, and a confined component electrically connected to the light emitting element, such that the confine component does not obstruct the optical path of the light emitted from the light emitting element, resulting in uniform distribution of light intensity. The light emitting element mounting wiring substrate (1a) includes a substrate main body (2) which has a front surface (3) and a back surface (4) and which includes at least an insulating substrate (2a), and a plurality of element terminals (13, 14) formed on the front surface (3) of the substrate main body (2), at least one of the element terminals having a light emitting element mounting section (fa) on the top surface thereof, wherein the wiring substrate has a Zener diode (confined element) (10) embedded in the substrate main body (2), which element is electrically connected to a light emitting element (20) mounted on the mounting section (fa) and prevents application of overvoltage to the light emitting element (20).

A spatial light modulator that can quickly switch the focal length and light intensity distribution. This spatial light modulator 10 has a plurality of micro mirrors 14A, 14B, 14C, - - - arranged on a substrate 12 and these micro mirrors 14A, 14B, 14C - - - are each provided with a reflection angle distribution such that they converge the reflected light at one point for one reflection angle state with respect to incident collimated light and such that the reflected light is diverged for the other reflection angle state.

The embodiment of the invention discloses a light emitting diode (LED) device and a production method thereof. The LED device comprises a substrate, a chip, a first lens and a first particle layer, wherein the chip is arranged on the substrate; the first lens is arranged to be opposite to the substrate, and the chip is arranged between the substrate and the first lens; the first particle layer is arranged on the inner surface, on the outer surface or inside the first lens, and the first particle layer comprises fluorescent powder and also comprises light diffusion particles or reflection particles; and the light diffusion particles can scatter the light emitted by the chip and the fluorescent powder, and the reflection particles can reflect the light emitted by the chip. The LED device has high light emitting efficiency, and can solve the problems of the prior art that the LED device has small light emitting angle and non-uniform light.

In an optical discharge apparatus used in an electrographic image forming apparatus, by forming, on a light guiding member, a diffusing reflecting face for reflecting light from an LED lamp towards a photosensitive drum, and by supplementing the amount of light by altering the height of the diffusing reflecting face to the light emitting face and the width of the diffusing reflecting face in accordance with their distance from the light source, the light intensity distribution of the irradiating light that is irradiated onto the photosensitive drum is made uniform. Furthermore, since light that leaks from the diffusing reflecting face is reflected by a reflecting film that is pasted onto an upper face in the vicinity of a rear end portion of the light guiding member, and returned to the interior of the light guiding member, the amount of light that is irradiated from the light emitting face in the vicinity of the rear end portion of the light guiding member increases, and thus it is possible to further increase the uniformity of the light intensity distribution of the irradiating light. Furthermore, an optical discharge apparatus used in an electrographic image forming apparatus is provided with a light guiding member that is arranged facing the photosensitive drum of the image forming apparatus, and an LED lamp for irradiating the light onto the light incident face of the light guiding member. A diffusing reflecting face for reflecting the light from the LED lamp toward the photosensitive drum is formed on the light guiding member. The rear end face of the light guiding member is an optically transparent face, and the amount of irradiating light that is irradiated onto the photosensitive drum from the vicinity of the rear end portion of the light guiding member increases by forming a reflecting face behind the rear end face of the light guiding member.

The invention relates a transient speckle measurement optical system based on a double-pulse laser, and belongs to the field of dynamic mechanical quantity laser measurement. The system comprises a light source, a light path transmission system and a photoelectric receiving system; the light source emits double-pulse laser, the energy of the laser is adjusted by an attenuation piece, and the space filtering is carried out for speckles of the laser by a space filtering mirror group which consists of a first long focal length lens, a metal pinhole and a second long focal length lens; the light beam passes through a second reflector after the space filtering is expanded and collimated by a first reflector, an expanded beam lens and a collimating lens, and is divided into a path of measurement light and a path of reference light through a beam splitter prism to be incident on a measured surface and a reference surface respectively; the two paths of scattered light are gathered after passing through the beam splitter prism, and are interfered mutually; and the interfered light beam is imaged on the receiving surface of a CCD (Charge-Coupled Device) camera by an eyepiece. The system obtains speckle images of transient vibration of an object structure surface in an adjustable time interval; and the signal to noise ratio of the obtained speckle images is high.

A screen including a first plane and a second plane opposite to the first plane, at least one of which is illuminated with light, includes a reflective portion that reflects the light incident on the first plane, a transmissive portion that transmits the light incident on the second plane toward the first plane, and an optical element that focuses the light incident on the second plane such that the focused light is incident on the transmissive portion.

There is provided a small sized imaging apparatus which can measure with high accuracy a color distribution of a surface of an object, in which a light intensity distribution on a predetermined surface in a direction substantially perpendicular to an optical axis is uniform, and a change in an amount of light in a direction along the optical axis is reduced, and an illuminating unit which used in this imaging apparatus. (The imaging apparatus) Includes a light source section (210) which supplies illuminating light, a diffusing section (211) which diffuses by reflecting the illuminating light from the light source section (210), and aperture sections (212a and 212b) which allow to emerge diffused illuminating light, and the aperture sections (212a and 212b) has an aperture diameter D which allows the diffused illuminating light to emerge as a substantially parallel light.

An illumination device includes a flexible and substantially rod-like member having a predetermined length with a light-receiving surface and a light-emitting surface and an elongated light source extending along and positioned adjacent the light-receiving surface of the rod-like member, such that light entering the rod-like member from the elongated light source and through the light-receiving surface is preferentially scattered, thus causing a light intensity pattern that appears substantially uniform along the light-emitting surface of the rod-like member.

The invention provides an automatic target scoring and speed measuring device and a positioning and bullet speed measuring method. At least two first-class optical sensors are used for detecting the position of a point of impact, and bullets of various types and speeds except light tracers can be accurately positioned; moreover, linear and continuous infrared background light sources are adopted, so that light intensity of all portions of a target surface is evenly distributed, in the bullet point coordinate positioning process, a method including optical calibration table checking and ratio calculation is adopted, trigonometric function operation of a triangulation localization method is avoided, hardware calculation is easy to achieve, and the software and hardware structure is simplified. Meanwhile, two automatic target scoring devices with second-class optical sensors are used and connected in series to form an automatic speed measuring device, and under the condition of no target and target paper, the speed of a bullet of common light arms and a cannon can be measured. The automatic target scoring and speed measuring device and the positioning and bullet speed measuring method thereof are high in measuring precision, low in installation precision requirement, easy to maintain and suitable for wide application.

The invention discloses automatic calibration equipment for the light intensity of a DLP (Digital Light Processing) printing equipment projector. The automatic calibration equipment comprises a base; the base is provided with a first cylindrical linear guide rail which moves along the X-axis direction, a first sliding platform, a second cylindrical linear guide rail which moves along the Y-axis direction, a second sliding platform, a mounting platform, a third cylindrical linear guide rail which moves along the Z-axis direction and a third sliding platform in sequence from bottom to top; an extending platform is arranged at a side edge of the base in front of the third sliding platform; the third sliding platform and the extending platform are provided with a projector and a light intensity sensor respectively; the projector and the light intensity sensor are connected with a system control board; a calibration method comprises the following steps: step (1) focusing and adjusting; step (2) determining calibration reference light intensity; step (3) collecting compensation mask gray level numerical value of the projector; step (4) generating a compensation mask; step (5) carrying out calibration. The automatic calibration equipment provided by the invention is reasonable in design, compact in structure, convenient to operate and good in stability and can effectively obtain the light intensity of the projector.

The invention provides a stereo display device and relates to the technology field of photoelectricity. The stereo display device is capable of weakening moire pattern and improving stereo display effect. The stereo display device comprises a display panel and a transmission grating, wherein the display panel and the transmission grating are arranged in parallel. The transmission grating comprises a plurality of lens units. Each lens unit is provided with aberration. The distance H between the display panel and the transmission grating is equal to F plus or minus delta, wherein the F is the equivalent focal length of each lens unit and the delta is adjustment threshold. The stereo display device is suitable for the display device manufacturing field.

The invention relates to a laser scanner used curve rotating mirror which uses gear sharp to displace the regular polyhedron sharp and uses special curve reflector to displace the flat mirror of rotating mirror-oscillating mirror system to achieve the sense scan of the laser beam with even scan speed.

An optical element (10) according to the present invention is provided with a plurality of waveguides (11)˜(13) and a plurality of light path coupling parts (21), (22) coupling adjacent waveguides so as to optically couple said plural waveguides serially, wherein the paths for transmitting lights through the plural waveguides are curved at the optical path coupling parts, thereby the optical elements which is converted the incident laser light into the emitted light having uniform cross-sectional light intensity distribution can give a compact structure, further a laser light source that employs the optical element, and a two-dimensional image forming apparatus that employs the laser light source can also give a compact structure.

The invention provides a fluorescence microscopy method to generate multi-layer polished sections by utilizing a Fresnel biprism and a device. The device comprises parallel beams, a generating system of polished sections, a sample cell and an image acquisition system. The generating system of polished sections comprises a Fresnel biprism or a system composed of a Fresnel biprism, a telescope system and a phase shifting glass sheet; the sample cell is arranged at the rear part of the Fresnel biprism or at the rear part of the phase shifting glass sheet. As the parallel beams refract after passing through the Fresnel biprism, an interference field is generated in the beam overlaying region behind the prism, thus the light field of multi-layer polished sections is obtained. The invention solves the technical problems of ununiform luminance, small penetration depth of samples and slow rate of image acquisition in the existing mono-layer microscopy technology; the obtained multi-layer polished sections have great penetration depth, can be applied to fluorescence microscopy imaging of living entity samples; and the image acquisition rate is high.

The invention discloses a LED street lamp, which aims at providing the LED street lamp which has the wide illumination range, the even illumination, the strong transition sense, the strong brightness, and the high power. The invention comprises a base plate (2) of a plurality of LEDs (1), the base plate (2) comprises a plane section (6) and oblique planes with at least two stages respectively opposite positioned on the both sides of the plane section (6), the LEDs (1) are arranged on the plane section (6) and the oblique planes, the oblique planes comprise two first oblique planes (11,12) and two second oblique planes (21,22), the included angle between the first oblique planes (11,12) is Alpha, and the included angle between the second oblique planes (21,22) is Beta, Alpha is more than 100 degrees and less than 135 degrees, and Beta is more than 80 degrees and less than 110 degrees. The invention can be widely applied to the outdoor lighting field.

The invention relates to a trace substance analysis device based on near-field optical traveling-wave absorption. The prior art has a complex structure and high optical machine requirement, and fails to obtain high-precision spectral information. The device comprises an annular high-fineness cavity consisting of a single optical element, namely an isosceles triangular prism, and two equicrural surfaces are high-reflectivity surfaces; a light beam is incident from one high-reflectivity equicrural surface, performs the total internal reflection on the bottom surface of the prism to form a near-field optical test area, forms optical traveling-wave in the isosceles triangular prism, and emerges from another high-reflectivity equicrural surface; the emergent light beam passes through a high-precision light splitting unit of an Fabry-Perot cavity consisting of two high reflection mirrors, and a moving part drives one high reflection mirror of the Fabry-Perot cavity to move along the axial direction to adjust and control emergent spectral information; and a photoelectric detector receives an emergent beam from the Fabry-Perot cavity, forms a high-precision spectrum signal, and realizes the detection of trace substances. The device has the characteristics of simple and steady system structure, high precision of spectral information, less quantity of needed detected substances, broad applicable range and the like.

The invention relates to a designing method for a multi-partition optical phase plate in photo-etching illumination, which is characterized by comprising the following steps of: (1) calculating the size l of a phase unit; (2) selecting the partition size d of the optical phase plate; (3) emitting a light beam and determining the light distribution of required light beam, and carrying out matrix process; (4) assigning the initial phase in one partition in the phase plate; (5) processing discretization process with iterative algorithm to obtain the phase distribution of the partition; (6) repeating the step (4) and the step (5) in each partition one by one to obtain the phase distribution of each partition and combine the phase distribution so as to obtain the integral phase distribution; and (7) estimating the designing result. The optical phase plate designed by the invention has the characteristic of insensitivity property for position, size, shape and light distribution of the emitted light beam so that the required output light distribution can be obtained.

The invention provides a luminescent device and a backlight source in one embodiment, relates to the technical field of display and aims at solving the problem of a small light emergent angel of a luminescent device in the prior art and the problem of non-uniform brightness like light spots and light rings on a display screen if the luminescent device is applied to a backlight source. The luminescent device comprises an LED and an optical lens, wherein the optical lens comprises a light incident surface and a light emergent surface; the light incident surface comprises a concave free-form surface, while the light emergent surface comprises a convex free-form surface; the connection line of the center point of a light-emitting surface and any point of the light incident surface forms a first included angle with an axis of symmetry, and the curvature of the light incident surface is reduced as the first included angle is increased; the connection line of the center point of the light-emitting surface and any point of the light emergent surface forms a second included angle with the axis of symmetry, and the curvature of the light emergent surface is increased as the second included angle is increased; the first included angle and the second included angle are not greater than 90 degrees. The luminescent device is applied to the manufacture of the luminescent device and the backlight source comprising the luminescent device.