40results about How to "Short light path" patented technology

A white LED light source device and an LED backlight using the white LED light source can produce, among other features, white light with sufficient luminous intensity, uniform color tone, and high luminous utilization efficiency. A light path for producing white light with favorable color mixture can be shortened. The white LED light source device can be configured to include a bluish green LED lamp which can emit bluish green light by the combination of a blue LED device and a green phosphor material and a purple LED lamp which can emit purple light by the combination of a blue LED device and a red phosphor material. The bluish green light from the bluish green LED lamp and the purple light from the purple LED lamp are subjected to additive color mixture to produce white light with a spectrum containing three primary color wavelength components.

A digital light processing projector comprising a light source, a splitter module, a plurality of total internal reflection (TIR) prisms and digital mirror devices (DMDs), a combiner and a projection lens is provided. The splitter module is disposed in the light path of the light after the light source to split the light into a plurality of color lights. Each color light is incident to the total reflection plane of the TIR prism with an incident angle larger than the critical angle, and then is totally reflected to the DMD. Thereafter, each color light is reflected by the DMD being incident to the total reflection plane of the TIR prism with an incident angle smaller than the critical angle, and then passes through the TIR prism directly. The color lights passing through the TIR prisms are combined by the combiner and then projected by the projection lens.

The invention discloses a mini three-dimensional scanning confocal microscope. The double-comb linear scanning comprises an actor, two X linear drivers using as stator, Z linear driver, the second microlens is set on the actor, the light from the point-source become to the collimated light laser beam after passing the fist microlens, the beam goes through the mini optical spectroscope, reflected by the micro-scanning reflector, and focalize on the sample by the second microlens, the reflected or fluorescence light passes the second microlens and the micro-scanning reflector along the original path and returns to the mini optical spectroscope, the reflected light shines in the micro-light detector through the third microlens and the pinhole, the controlling device is used to collect and process the data and control said linear scanning on the focus of the direction X and Y.

The invention discloses a light-cured 3D printer. The light-cured 3D printer comprises a carrier plate, a driving mechanism, a containing tank, a light beam generation assembly for providing parallel light beams and a liquid crystal screen for forming a light transmittance zone with a slice shape. Parallel light beams produced through the light beam generation assembly perpendicularly go through the light transmittance zone and irradiate liquid photosensitive resin. The parallel light beams produced through the light beam generation assembly go through the light transmittance zone of the liquid crystal screen and irradiate the liquid photosensitive resin so that the resin is cured, and the parallel light beams going through the liquid crystal screen are not refracted and reflected and thus the shape of each layer of the cured photosensitive resin is the same to that of the corresponding slice and a printing precision is high. When the parallel light beams are formed, the theoretical shortest distance from a spot light source to the liquid photosensitive resin is one focal length of a lens or is equal to thickness of a light guide plate and thus the light-cured 3D printer has a small volume and is convenient for carrying and use.

The present invention discloses a large wheel diameter outside diameter optical projection measuring equipment. It includes a mechanical positioning component and an optical measuring head mounted on the mechanical positioning component. Said optical measuring head is composed of back projection laser source, beam expander lens, optical slit component, imaging lens component, CCD camera and signal control processing device. It is applicable to diameter measurement of geometric revaling body whose wheel diameter is greater than 500mm, specially it is applicable to diameter measurement of geometric revolving body whose thread width is greater than 80 mm.

The disclosure relates to a 3D printing device and printing method. The 3D printing device comprises: a liquid storage tank for holding a liquid photo polymerizable material; a liquid crystal display screen; a light source system, the light from the light source system transmits through the liquid crystal display screen to the liquid photo polymerizable material; a lifter pallet disposed in the liquid storage tank, the lower surface of the lifter pallet and the bottom of the liquid storage tank form a cavity, the liquid photo polymerizable material flows into the cavity along with the upward movement of the lifter pallet; a display control device for driving the liquid crystal display screen, the light source system and the lifter pallet respectively. The curing equipment in the 3D printing device has a short light path and a low graphic deformation rate, thus significantly improves the molding precision of 3D printing.

The invention discloses a gaseous substance detection device based on a transparent capillary structure and fluorescent light. The gaseous substance detection device comprises a light source system, a fluorescent coating capillary tube and a detection system, which are arranged on a capillary tube base; the detection system and the light source system are arranged vertically to the wall of the fluorescent coating capillary tube; the detection system and the light source system are arranged at 90 degrees; the light source system comprises an LED light source, a collimation system and a first light filter, which are sequentially connected and arranged; and the detection system comprises a detector and a second light filter. The light source and the detector are arranged at 90 degrees along the wall of the fluorescent coating capillary tube, so that exciting light is prevented from directly irradiating the detector; a light path is short; the effects of water vapor and the like are reduced; the second light filter is isolated from an air path, and is prevented from being polluted by gas; stray light of the exciting light is reduced through the arrangement of a sleeve; the fluorescence intensity and the signal strength are enhanced; the signal background noise is reduced; and the effects caused by the water vapor and dust adhesion in the detection gas are reduced.

The embodiments of the invention provide a zoom lens, a zoom method, a terminal and a computer readable storage medium. The zoom lens includes n lenses; the n lenses are successively arranged in an optical axis direction; n is a positive integer greater than or equal to 2; an aperture is arranged parallel to the n lenses in an optical axis direction; the aperture is arranged at the tail end of theoptical axis and parallel to the n lenses to form an image plane; the n lenses include m variable curvature lenses and n-m aspherical lenses; the top end and bottom end of each variable curvature lens of the m variable curvature lenses are provided with driving parts; m is a positive integer greater than 1 and less than n; by changing the power of the driving parts corresponding to the m variablecurvature lenses, the radiuses of curvature of the m variable curvature lenses are changed, and an incident angle is obtained; and after receiving incident light corresponding to an object space, under the action of a beam of light of the aperture, and through the n lenses, the incident light is reflected to the image plane to be an image at an incident angle.

The invention provides an infrared interference imaging spectrometer based on biplane right angle reflectors. The infrared interference imaging spectrometer comprises a rotary platform, a beam splitter, a first right angle reflector, a second right angle reflector, an imaging object lens, a surface array detector and a control and information processing module. The beam splitter, the first right angle reflector, the second right angle reflector, the imaging object lens and the surface array detector are respectively installed on the rotary platform. The control and information processing module controls the rotary platform and the surface array detector and receives signals of the surface array detector. According to the invention, a static Michelson interference principle is utilized, one right angle reflector is dislocated in a direction perpendicular to an optical axis, and transverse cutting and light splitting of light beams are realized. Under a push-scan or rotation-scan mode, a space and spectrum information "data cube" is obtained.

A self ¿C scanning and projecting measurement device of two- dimensional configuration consists of laser, extender lens, light slot, cylindrical lens set, CCD and controller on the same light path in sequence. It is featured as setting light slot on linear scanner for moving said slot along X direction, making light slot length be greater than Y directional width of geometric form section to be measured and making light slot width be less than X directional measurement resolution rate; forming cylindrical lens set by cylindrical lens or cylindrical lens and imaging lens; using controller to control movement and to control collection and process of measurement signal.

The invention discloses a four-spectrum-in-one spectral beam split structure. The structure is used for imaging four spectral bands of visible light, near infrared, medium wave infrared and long waveinfrared of a remote target on corresponding detectors at the same time, thereby realizing reliable detection and sufficient identification of the target. A whole light path is composed of three parts. A main optical system carries out first-time imaging. Dichroic mirrors and reflecting mirrors carry out spectral beam split and light path reflection. A post-imaging optical structure of each spectral band realizes secondary imaging of each spectral band. According to the structure, beam split mode and structure layout of the four spectral bands is realized. The structure is compact in structure, mature in coating technology and high in beam split efficiency. The structure is characterized by that each spectral band of a system is high in optical transmittance, imaging quality is high, and the system is easy to maintain.

The invention provides a display substrate, a display device and a preparation method thereof. The display substrate comprises a substrate and a pixel defining layer, wherein the pixel defining layer is arranged on the substrate, and a plurality of sub-pixel openings are defined by the pixel defining layer; and the surface of the side, which is away from the substrate, of the display substrate is provided with at least one concave part, and the orthographic projection of the concave part on the substrate is not overlapped with the orthographic projection of the sub-pixel opening on the substrate. When the display substrate is assembled into a display device, a spacer on a color film substrate can be accommodated in the concave part, so that the thickness of the display device can be greatly reduced, the light emitting path of a light-emitting element can be reduced, the light emitting efficiency of the light-emitting element can be improved, and the service life of the light-emitting element can be prolonged.

The invention provides laser projection equipment. The laser projection equipment comprises a complete machine shell and a light source, the light source comprises a red laser assembly and a green laser assembly which are installed in parallel, and a blue laser assembly perpendicular to the red laser assembly and the green laser assembly. A first light combination mirror is arranged at the intersection of the blue laser and the green laser, the first light combination mirror transmits the blue laser and reflects the green laser, a second light combination mirror is arranged at the intersectionof the blue laser, the green laser and the red laser after light combination, and the second light combination mirror transmits the red laser and reflects the blue laser and the green laser to a third light combination mirror. The third light combination mirror reflects the red laser, the blue laser and the green laser to a light source light outlet, and the first light combination mirror, the second light combination mirror and the third light combination mirror are arranged in parallel. According to the laser projection equipment, the light loss of the red laser is small, the power ratio orcolor ratio of the three-color laser beams can be maintained, and the laser projection equipment can present a projection picture with high brightness and good color.

A three-DOF (Degree of Freedom) heterodyne grating interferometer displacement measurement system comprises a dual-frequency laser, a grating interferometer, a measurement grating, receivers and an electronic signal processing component; the grating interferometer comprises a polarizing spectroscope, a reference grating and dioptric elements; the measurement system realizes displacement measurement on the basis of grating diffraction, the optical Doppler Effect and the optical beat frequency principle. Three linear displacements can be output by the system when the grating interferometer and the measurement grating perform a three-DOF linear relative motion. The measurement system can reach sub-nanometer and even higher resolution and precision, and can simultaneously measure three linear displacements. The measurement system has the advantages of being environmentally insensitive, high in measurement precision, small in size, light in weight, etc., and is capable of improving the overall performances of an ultra-precision stage of a lithography machine as a position measurement system for this stage.

The invention discloses a total reflection focusing method and device used for an LED shadowproof lamp. The method and device are characterized in that the device comprises a total reflection focusingdevice unit; with a point S and a point D as the circle centers, a circle S and a circle D intersecting with the circle S are formed correspondingly; with the circle centers of the circle S and the circle D as the focal points, a conjugated ellipse is formed; total reflection surfaces of the total reflection focusing device unit are located on a curve section of the ellipse, and when incident light emitted from the point S irradiates the total reflection surfaces located on the curve section of the ellipse in the mode that the incidence angle alpha is greater than or equal to the critical angle of a total reflection focusing device, the incident light can be totally reflected to the point D; and incident planes are formed between the points of intersection of the circle S and the circle Dand the points of intersection of the circle S and the ellipse, light-exiting surfaces are formed between the points of intersection of the circle S and the circle D and the points of intersection ofthe circle D and the ellipse, and the total reflection surfaces are formed on the curved section between the points of intersection of the ellipse and the circle S and the points of intersection of the ellipse and the circle D. The total reflection focusing method and device provided by the invention have the advantages that the light path is short, the light loss is small, the light utilizationrate is higher, a required lamp is low in power and small in heating capacity, formed light spots are fine and smooth, and glare is avoided.

The invention discloses a fingerprint imaging module and a forming method thereof, a fingerprint imaging module mother board and electronic equipment. The fingerprint imaging module comprises a substrate; a light-emitting structure layer, wherein the light-emitting structure layer is located on one surface of the substrate; a pixel array, wherein the pixel array is located on the light-emitting structure layer. Light rays generated by the light-emitting structure layer form sensing light carrying fingerprint information on a sensing surface after transmitting the pixel array, and the pixel array collects the sensing surface to obtain a fingerprint image. The light-emitting structure layer and the pixel array are sequentially stacked on the same surface of the substrate. Therefore, the light source for generating the light and the base layer of the image sensor for collecting the sensing light are realized, the light path for obtaining the fingerprint image light is shortened, and the thickness of the fingerprint imaging module is reduced, so that the aims of improving the integration degree of the device and improving the imaging quality are fulfilled.