207results about How to "Simple optical structure" patented technology

A semiconductor light-emitting device and a method for manufacturing the same can include a wavelength converting layer in order to emit various colored lights including white light. The device can include a board, a frame located on the board, at least one light-emitting chip mounted on the board, the wavelength converting layer located between an optical plate and an outside surface of the chips so that a density of a peripheral region is lower than that of a middle region, and a reflective material layer disposed at least between the frame and a side surface of the wavelength-converting layer. The device can have the reflective material layer form each reflector and can use a wavelength converting layer having different densities, and therefore can emit a wavelength-converted light having a high light-emitting efficiency and a uniform color tone from various small light-emitting surfaces.

The invention discloses a laser direct plate marking device for a plane screen print plate and device. The device comprises a screen frame for screen printing, a screen mesh stretched on the screen frame for screen printing, wherein the bottom of the screen mesh is coated with a photosensitive material coating, an optical component arranged below the screen frame for screen printing and used for performing exposure treatment on the photosensitive material coating, a scanning trolley for driving the optical component to reciprocate on the horizontal surface, and a longitudinal moving member for driving the optical component to shuttle on the horizontal surface; and the optical component comprises a plurality of lasers arranged on the same horizontal surfaces, the plurality of lasers are arranged on the same straight line parallel to a longitudinal central line of a rectangular screen frame from front to the back. The method comprises the following steps of confirming a control parameter of a mechanical structure, confirming a control parameter of a laser, and exposure imaging. The device disclosed by the invention is reasonable in design, low in investment cost, simple for use and operation, good in use effect, and wide in application range, and can be used for finishing the print plate manufacturing process of a screen frame in different sizes.

In a planar waveguide optical circuit 1, a inclined groove 3 is formed at an inclination angle .theta. with respect to the vertical axis so as to cross optical waveguides 2.sub.n. A reflection filter 4 structured such that the difference in reflectivity between orthogonal polarization is compensated for with respect to signal light is installed inside the groove 3, the reflected light from the reflection filter 4 is detected by the photodetectors 6.sub.n, and the optical intensity of the signal light is monitored. This makes it possible to accurately monitor the optical intensity regardless of the polarization state of the signal light. Also, since the inside of the groove 3 including the reflection filter 4 is sealed with a filler resin 5, any deterioration in long-term stability that would otherwise be caused by contamination of these components is prevented. Thus, the optical waveguide module with which the structure of the optical circuit is simpler, and the optical intensity can be correctly monitored regardless of the state of polarization of the signal light is realized.

A semiconductor light-emitting device and a method for manufacturing the same can include a wavelength converting layer in order to emit various colored lights including white light. The semiconductor light-emitting device can include a base board, a frame located on the base board, at least one light-emitting chip mounted on the base board, the wavelength converting layer located between an optical plate and each outside surface of the chips so as to extend toward the optical plate using a meniscus control structure, and a reflective material layer disposed at least between the frame and both side surfaces of the wavelength converting layer and the optical plate. The semiconductor light-emitting device can be configured to improve light-emitting efficiency and color variability between the light-emitting chips by using the reflective material layer as each reflector, and therefore can emit a wavelength-converted light having a high light-emitting efficiency from various small light-emitting surfaces.

A light emission section includes light generators which are operated on the basis of drive signals from a controller so as to emit near infrared interferable light beams having different specific wavelengths to a light interference section. The light interference section includes a beam splitter having a low-reflection region. The beam splitter allows a most portion of the near infrared interferable light beams to propagate toward an object to be examined, and reflects a portion of the near infrared interferable light beams to a movable mirror. The beam splitter causes interference between measurement light reflected by the object and reference light reflected by the movable mirror, and the resultant interference light propagates to a light detection section. The light detection section receives the interference light and calculates predetermined information regarding the object by making use of the quantity distribution of the interference light. A display section displays the calculated information.

An optical system of a helmet displayer comprises a micro displayer, a bonding lens and an optical combiner. The micro displayer and the bonding lens are bonded integrally, the optical combiner comprises two tightly-adhered right-angle prisms forming a 45-degree angle and a concave-surface reflecting mirror, a narrow-band high-reflective optical surface is located at the bonding position of the two right-angle prisms and forms a 45-degree angle respectively with the horizontal optical axis and the vertical optical axis, the concave-surface reflecting mirror and the right-angle prisms are bonded integrally, and the concave surface is the high-reflective optical surface. Light beams are emitted from the micro displayer, are converged through the bonding lens, enter the optical combiner and pass through the narrow-band high-reflective optical surface, then transmitted light beams are converged through the high-reflective optical surface again, and reflected light beams become parallel light beams after the light beams pass through the narrow-band high-reflective optical surface again. An exit pupil is located at the position of a pupil of one human eye, extraneous light enters the optical combiner and passes through the narrow-band high-reflective optical surface, and then the transmitted light beams enter the pupil of one human eye. The optical system of the helmet displayer has the advantages of being compact in system, convenient to correct, good in aberration correction and high in reliability.

The present invention provides a dual-spectrum camera system based on single sensor and an image processing method, and relates to the technical field of image collection. The system comprises a lens,an image sensor and a logic beam split module and an image fusion module which are connected in order; the image sensor comprises a RGB light-sensitive unit and an IR light-sensitive unit, a light-inpath of the RGB light-sensitive unit is provided with an infrared cut-off filtering layer; the image sensor receives incident light to generate original images and send the original images to the logic beam split module; and the logic beam split module performs conversion of the original images to divide the original image into a visible image and an infrared image and send the visible image andthe infrared image to the image fusion image to generate a fused image. The objective of the invention is to provide a dual-spectrum camera system based on single sensor and an image processing methodto allow the optical construction of the dual-spectrum camera system to be simpler so as to facilitate the more miniaturized size of the camera device and reduction of the cost and improve the imageeffect.

An optical tunable filter is provided including a first substrate having light transmission properties and having a movable part and a supporting member that movably supports the movable part and having a smaller thickness than the movable part, a second substrate having light transmission properties and opposed to the first substrate, a first gap and a second gap provided between the movable part and the second substrate, an interference part causing interference between the movable part and the second substrate through the second gap and a drive member changing an interval of the second gap by moving the movable part to the second substrate by making use of the first gap.

The invention discloses a laser induction fluorescence detecting machine, which is mainly used for the micro sample inspecting in the field of clinical medicine and life science. The invention comprises an excitation light path (10), a separating micro column (20) and a fluorescence light collecting path (30). The axis shaft line of the excitation light path (10) is vertical with the axis shaft line of the fluorescence light collecting path (30), and the excitation light path (10) has the same axis with the separating micro column (20), an optical fiber (40) is equipped between the excitation light path (10) and the separating micro column (20); the front end of the optical fiber (40) is coupled with the excitation light path (10), and the rear end extends to the inspecting window (21) of the separating micro column (20). The invention has the advantage that the invention has high fluorescence stimulation efficiency, The optical structure is simple, the volume is small, the fluorescence stimulation of the sample can be directly realized, the sensitivity and accuracy can be enhanced; and the invention can be used together with the micro column separating systems like capillary tube electrophoresis, capillary tube liquid chromatography and flowing injection, etc.

A spectroscopic scatterometer detects both zero order and higher order radiation diffracted from an illuminated spot on a target grating. The apparatus forms and detects a spectrum of zero order (reflected) radiation, and separately forms and detects a spectrum of the higher order diffracted radiation. Each spectrum is formed using a symmetrical phase grating, so as to form and detect a symmetrical pair of spectra. The pair of spectra can be averaged to obtain a single spectrum with reduced focus sensitivity. Comparing the two spectra can yield information for improving height measurements in a subsequent lithographic step. The target grating is oriented obliquely so that the zero order and higher order radiation emanate from the spot in different planes. Two scatterometers can operate simultaneously, illuminating the target from different oblique directions.; A radial transmission filter reduces sidelobes in the spot and reduces product crosstalk.

An optical connector is disclosed. The optical connector includes a first waveguide member that includes a first waveguide, a first lens disposed at one end surface of the first waveguide, and a second lens disposed at the other end surface of the first waveguide.

A distance measurement device measures target distances to a measurement target by optically detecting the measurement target using a lens. The image formation relative quantity calculating part of the distance measurement device creates an image of the measurement target by causing light having a plurality of wavelengths from the measurement target to form an image by part of the lens. By further determining the image formation distances from the lens to the image for each wavelength, image formation relative quantities, which are quantities indicating the relative relationship between the image formation distances, are calculated. A recording part records correlation information, which is information defined by the chromatic aberration characteristics of the lens, in a manner so as to indicate the correlation between image formation relative quantities and target distances. A distance calculating part calculates the target distances by matching the image formation relative quantities to the correlation information.

The invention discloses a speech detecting system. The speech detecting system is designed based on the Doppler interference of an M_Z interferometer, the optical frequency modulation is achieved through an acousto-optic modulation, so that speech signals to be tested and low frequency environment disturbance signals are separated, and then demodulation output of the speech signals are achieved by means of an orthogonal phase lock demodulation method. The speech detecting system has the advantages of being simple in optical structure and small in nonlinear errors.

The invention provides a dual zooming lens based on polarization state control. A polarizer, a quarter-wave plate, a first lens and a second lens are successively arranged in the forward direction of light, the first lens and the second lens employ planar nanometer brick lenses composed of nanometer brick arrays, the dimension of each nanometer brick in the nanometer brick arrays is the same, the center interval between adjacent nanometer bricks is the same, the corners of the nanometer bricks are determined according to the distance from the center of the lens. The dual zooming lens is characterized in that focal length values of two nanometer brick meta-material structured lenses can be changed to opposite numbers of original focal length values simply by changing the rotation direction of rotatory polarization of the nanometer brick meta-material structured lenses (i.e., rotating the quarter-wave plate by 90 degrees), and thus a zooming function of a combined lens is realized. The dual zooming lens with polarization control has the advantages of simple zooming, small volume, light weight, high integration, batch copy and the like, thereby can be widely applied to such fields as photon integration, laser processing and the like.

The invention relates to a component prism-based phase diversity wavefront sensor comprising a lens, a component prism, a CCD imaging detector, and a computer system. After a parallel light beam containing wavefront distortion passes through the lens and is focused, the focused light beam is vertically irradiated on a front surface of the component prism; after the light beam passes through the component prism, an incident light beam is split into two beams of lights; and two beams of lights emitted by the component prism are imaged on a CCD photosensitive surface, wherein there is a fixed light path difference between the two beams of lights. According to the invention, the optical structure of the sensor is simple; the CCD imaging detector can simultaneously collect a focal plane light intensity distribution image and a defocused light intensity distribution image, so that the synchronism and the real-time property of the two images can be ensured as well as detection precision of the phase diversity wavefront sensor on dynamic aberration and restorability on an expansion object can be effectively improved; and moreover, the provided phase diversity wavefront sensor has obvious advantages in fields like optical detection, adaptive optics, high resolution imaging and the like.

The present invention discloses an electro optic modulator based on two-sided metallic reflection type polarization independent crystal, wherein, the top and bottom surface of the crystal wave guide layer is adhered with an upper and a lower metallic electrodes, the crystal wave guide layer and the adhered upper and lower metallic electrodes jointly consist a wave-guide structure, an input matching circuit is connected with the upper layer metallic electrode and the lower layer metallic electrode; the incident carrier light forms a focused beam after focusing, and then the focused beam is incident onto the wave-guide structure, reflecting by the upper layer metallic electrode; a modulation electrical signal is added between the upper layer metallic electrode and the lower layer metallic electrode by the input matching circuit, the modulating signal changes the reflection index at the work corner by changing the refractivity of the wave guide layer, thereby implementing the modulation of intensity of reflected light. The invention has a polarization independent characteristic, and has a low requirement to the electro-optic coefficient of the wave guide layer crystal. At the same time, the invention has low-voltage, large modulation bandwidth, small insertion loss and transmission loss, simple production and low cost.

A lamellar grating interferometer is described, in which the light beams are collimated and focused onto the grating by means of mirror 9, which at the same time serves for collecting the light reflected from the grating. In this case, the light beam of a white light source 1 is first collimated by means of first lens 2, and subsequently passed through a sample cuvette 3. The transmitted light beam is subsequentlyy focused and coupled by another lens 2 into a fibre 17. The light to this fibre 17 is subsequentlyy directed towards a mirror 9, reflected from this mirror 9 onto a grating 11, which forms part of a lamellar grating interferometer which is realised by means of a micro electro mechanical device MEMS 7, which is mounted on a MEMS holder 6, as is the fibre 17. The light reflected from this grating 11 is reflected onto the same mirror 9, and focused and coupled by this same mirror 9 into a second multimode fibre 18, which is also fastened to the holder 6. The light guided by this second multimode fibre 18 is subsequently fed into a detection device 4.

The invention provides a device used for whole row scanning type laser display and a synchronization control method thereof. The device used for display comprises a light source assembly, a one-dimensional imaging device, a scanning device, a projection lens, a video decoding device, a light source drive control device and a photoelectric sensor. The light source assembly comprises plural laser generator module groups. The one-dimensional imaging device comprises plural light guide devices. The scanning device is arranged in the light path of laser emergent from a light emergent end and used for reflecting emergent light of the light emergent end of the guide light devices to the projection lens. The photoelectric sensor is used for detecting a single-frame scanned initial laser signal. The light source drive control device is used for outputting drive control signals to the light source assembly in a spacing way according to one-dimensional video signals decoded by the video decoding device. When the scanning device rotates around the rotating shaft of the scanning device, the projected one-dimensional emergent light of a first direction can be scanned along a second direction vertical to the first direction.

The invention discloses a zoom projection fish-eye lens generally used for a digital projector, which comprises a front main tube of a lens, a zoom tube of the lens, a compensation tube of the lens, a rear main tube of the lens, a front fixed mirror group, a zoom mirror group, a compensation mirror group, a rear fixed mirror group and an aperture diaphragm, wherein the front fixed mirror group, the zoom mirror group, the compensation mirror group, the rear fixed mirror group and the aperture diaphragm are coaxially arranged on the positions of the front main tube of the lens, the zoom tube of the lens, the compensation tube of the lens and the rear main tube of the lens. The zoom structure mode of the zoom projection fish-eye lens disclosed by the invention is a mechanical compensation method positive-group zoom and negative-group compensation mode designed by a ''non-object-image exchange principle''. Two cam curves followed by the zoom mirror group and the compensation mirror group are both constructed into standard spiral lines. According to the zoom projection fish-eye lens generally used for the digital projector, which is disclosed by the invention, two standard spiral lines with a regular lead are used as the cam curves of the zoom mirror group and the compensation mirror group, so that the production difficulty and the assembling and adjusting difficulty are lowered, and the stability of a lens structure and the regulation smoothness are improved. The zoom projection fish-eye lens generally used for the digital projector is favorable for mass production and can be used for common 1LCD (liquid crystal display), 3LCD or 1DMD (digital micro-mirror device)-type digital projectors with chips of different sizes and different chip length-width ratios.

Method and system for laser cutting is disclosed. Using a novel dual-focus optical conversion unit. The dual-focus optical conversion unit may comprise a beam splitter and a convex mirror. The beam splitter may be insensitive to the polarization of an incident beam. The convex mirror may be placed beyond and parallel to the beam splitter, wherein the surface of the convex mirror may be coated with a reflective phase-retarder coating.

Provided are a color-depth sensor and a three-dimensional image acquisition apparatus including the same. The color-depth sensor includes a color sensor that senses visible light and an infrared sensor that is stacked on the color sensor and senses infrared light. The 3D image acquisition apparatus includes: an imaging lens unit; a color-depth sensor that simultaneously senses color image information and depth image information about an object from light reflected by the object and transmitted through the imaging lens unit; and a 3D image processor that generates 3D image information by using the color image information and the depth image information sensed by the color-depth sensor.

The invention discloses a large-scale multi-pulse modulation femto-second laser absolute distance measurement device and method and belongs to the field of femto-second laser distance measurement. According to the invention, the device includes a femto-second laser source, an atomic clock, a Michelson interferometry ranging device, a wave plate HWP4, a PBS (Polarized Beam Splitter), a balance optical cross-correlation assembly, a photoelectric detection device, a servo control device and a frequency counter. The device also includes a single-mode long optical fiber in a length m and a wave plate HWP5. The invention also discloses the large-scale multi-pulse modulation absolute distance measurement method implemented based on the femto-second laser absolute distance measurement device. According to the invention, the length of a reference arm in the Michelson interferometry ranging device is not needed to know and absolute distance measurement of a continuous range based on a flight time method is realized. The application range of femto-second laser absolute distance measurement can be expanded and the invention has a good application prospect in engineering fields such as femto-second laser distance measurement and the like.

A laser distance measuring device is provided for measuring distance to an object. The laser distance measuring device comprises a laser emitter, a collimator objective lens, a optoelectronic converter, a receiving objective lens, and a control and analysis system, wherein the collimator objective lens and the receiving objective lens are aligned along a common axis. The laser emitter is positioned at the focal point of the collimator objective lens on the optical axis, and the light receiving surface of the optoelectronic converter is positioned at the focal point of the receiving objective lens on the optical axis.

A lower cladding layer is formed on a surface of an electrical circuit substrate. A UV curable resin layer is stacked on the lower cladding layer. The resin layer is partly cured, and the other uncured resin layer is removed, thereby forming resin projections. The resin projections are processed so as to have an inclined face. Metal reflecting layers are formed on the inclined faces. A core layer is stacked on the lower cladding layer and the metal reflecting layers, and an upper cladding layer is stacked on the core layer.

The invention belongs to the technical field of optical lenses, and particularly relates to a large-aperture wide-angle zoom lens, which comprises a zoom group and a compensating group, wherein the zoom group has positive total optical power, the compensating group has negative total optical power, and zoom is carried out through changing the interval between the zoom group and the compensating group; the compensating group comprises a first lens, a second lens and a third lens arranged sequentially from the object side; the zoom group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens arranged sequentially from the object side; the fourth lens is a glass aspherical lens; and the focus Ff' of the compensating group and the focus Bf' of the zoom group meet the following condition: 0.8<|Ff' / Bf'|<1.1. In comparison with the prior art, a mixture of a glass spherical lens and a glass aspherical lens is adopted, the aspherical lens has a stronger aberration correction ability, higher performance can be achieved, the reasonably-arranged glass aspherical lens can replace a plurality of glass spherical lenses, the optical structure of the lens can be simplified, the size is reduced, and the assembly efficiency is enhanced.

The invention provides a display system. The display system comprises a light collimation module and a light view switching module, and the light view switching module is arranged on an emergence side of the light collimation module and comprises a first conductive film, a second conductive film, a diffusion structural film and an electro-optical material. The first conductive film is arranged on one side close to the light collimation module, the second conductive film is opposite to the first conductive film, a gap is reserved between the first conductive film and the second conductive film, and the diffusion structural film is arranged in the gap. A surface, away from the first conductive film or the second conductive film, of the diffusion structural film is a first surface which is a concave lens surface or a convex lens surface, and the first surface comprises a plurality of microstructures arrayed sequentially. The electro-optical material is arranged in the gap and positioned on the first surface. The display system is simple in optical structure and low in energy consumption, and peep-proof display can be realized.

A high-efficiency, compact color illuminating system and a projection type image display apparatus using the color illuminating system are provided. The color illuminating system includes a light source, a spiral lens disc that periodically scrolls light by rotational movement, and an optical unit that isolates light beams of different wavelengths from white light emitted from the light source and guides the isolated light beams to enter at least two effective regions of the spiral lens disc. The projection type image display apparatus includes the color illuminating system, an image forming unit that generates images using scrolling light from the spiral lens disc, and a projection lens unit that enlarges and projects the images formed by the image forming unit on a screen.

The invention provides an infrared and ultraviolet cutoff filtering film structure for a large curvature lens surface and a manufacture method thereof. The infrared and ultraviolet cutoff filtering film structure for the large curvature lens surface comprises a large curvature lens which is provided with an infrared and ultraviolet cutoff filtering film. The infrared and ultraviolet cutoff filtering film comprises low refractive index film layers and high refractive index film layers which are alternately stacked on the large curvature lens, the number of the low refractive index film layers is larger than or equal to 10, and number of the high refractive index film layers is larger than or equal to 10. The infrared and ultraviolet cutoff filtering film is a 45-layer multi-film-layer structure. The low refractive index film layers are made of SiO2, and the high refractive index film layers are made of Ti3O5 or Ta2O5. The infrared and ultraviolet cutoff filtering film structure has the advantages of a simple and reasonable structure, consistent film layer uniformity, and strong film firmness.