73results about How to "Improve optical resolution" patented technology

A method for depth-resolved optical detection of a specimen comprises the steps of providing a scanning movement over the specimen or at least a part of the specimen of an illumination light distribution of at least one wavelength which is generated on or in the specimen, providing detection particularly of the light which is influenced based on interaction with the specimen, especially fluorescent light and / or reflected light and / or luminescent light and / or scattered and / or transmitted light, the illumination light having a modulation in at least one spatial direction, and carrying out the scanning movement and detection associated with the scanning with the scanning movement at least in a first and a second different phase position of the modulation and / or first and second frequency of the periodicity of the modulation and calculating at least one optical section image through the specimen or through part of the specimen. Other methods and arrangements are disclosed.

Method for specific detection of one or more analytes in a sample. The method includes specifically associating any one or more analytes in the sample with a scattered-light detectable particle, illuminating any particle associated with the analytes with light under conditions which produce scattered light from the particle and in which light scattered from one or more particles can be detected by a human eye with less than 500 times magnification and without electronic amplification. The method also includes detecting the light scattered by any such particles under those conditions as a measure of the presence of the analytes.

The invention provides a stimulated radiation loss micro imaging system which comprises an exciting light laser, a first dichroscope, a fluorescent light activating and imaging unit, a loss photoexcitation light, a vector beam modulation unit and a control unit, wherein the fluorescent light activating and imaging unit comprises a second dichroscope, an XY vibrating mirror scanning part, a scanning lens, a cylinder mirror, an objective lens, a probe hole and a photomultiplier tube. The stimulated radiation loss micro imaging system provided by the invention adopts the vector beam modulation unit to modulate the incident loss light laser beam amplitude, a phase and a polarization state, the loss light wave amplitude, the phase and the polarization state of the pupil of an objective lens are utilized to form loss light focal spots, and meanwhile, the loss light focal spots are reshaped in a fine and complicated manner under the action of the multiple physical quantities, so that the generated loss light focal spots are exactly matched with the exciting light focal spot distribution, meanwhile, the diameter of a centre dark region of the loss light focal spots is minimal under the condition of a certain signal-to-noise ratio, and the stimulated radiation loss micro imaging system has high optical resolution.

An opthalmological measuring device for determining geometric structures in an eye includes an optical, triangulating measurement system for determining at least one geometric reference in the eye by triangulation, and an optical, interferometric measurement system for determining geometric detailed structures in the eye by optical interferometry. The measuring device is designed to position the geometric detailed structures determined by the interferometric measurement system on the basis of the at least one geometric reference in the eye determined by the triangulating measurement system. This firstly allows the interferometric measurement system to register geometric detailed structures in the eye with a high optical resolution and at places that are not visible to the triangulating measurement system, and secondly allows the positioning of said geometric detailed structures in the eye on the basis of geometric references that are determined by the triangulating measurement system without significant movement artifacts.

The present invention discloses an ocular lens optical system of a head-mounted display device. The ocular lens optical system of the head-mounted display device is suitable for a screen with the size of 4.5-5.5inches and a display screen with the resolution of 2k or 4k. The ocular lens system has high image analysis capacity to fully develop the high resolution and the DPI advantage of the 4K screen, the field angle reaches up to 64 degrees, the silent frame is clear and is almost distortionless, the ray tracing journey is smaller than 75mm, so that the volume and the weight of the whole glasses are greatly reduced. The ocular lens optical system of the head-mounted display device comprises a piece of biconvex aspheric surface positive lens, a piece of biconcave aspheric surface negative lens, a lens barrel and a display screen; the materials of the positive lens are optical grade PMMA, the materials of the negative lens are the optical-grade PC, the positive lens and the negative lens are separately arranged, and the negative lens is close to the display screen.

The invention relates to a spectrum analyzer, which comprises a light source, a light collecting unit, a light splitting unit, an imaging unit, a detecting unit and a processing unit. The light source emits measuring light. The light collecting unit couples the measuring light to the light splitting unit which comprises a first light splitting module and a second light splitting module. The measuring light is split by the first light splitting module in an X direction, split by the second light splitting module in the same direction, imaged by the imaging unit and then received by the detecting unit. Signals received by the detecting unit are processed by the processing unit so as to obtain a spectrogram corresponding to a narrow wave band. The invention further provides a spectrum analyzing method. The spectrum analyzer and the spectrum analyzing method have the advantage of high spectral resolution of the narrow wave band.

The invention relates to a large-visual-field-angle high-image-quality eyepiece optical system and a head-mounted display device. The large-visual-field-angle high-image-quality eyepiece optical system comprises a first lens group and a second lens group which are coaxially and sequentially arranged from a human eye to an image source along an optical axis direction, wherein the first lens group and the second lens group satisfy a certain focal length relationship. The effective focal length of the first lens group is a negative value, and the first lens group is composed of a first lens close to the human eye and a second lens away from the human eye. The effective focal length of the second lens group is a positive value, and the second lens group is composed of one or two pieces of lenses. The first lens is in a biconvex shape, the optical surface, close to the human eye, of the second lens is recessed towards the human eye, and the first lens and the second lens are each of an aspheric surface type. The distance between the first lens and the second lens, a focal length relationship between lenses in the second lens group, and material characteristics of the lenses satisfy certain relationships, and the second lens group further comprises a fourth lens. The large-visual-field-angle high-image-quality eyepiece optical system has the advantages of large aperture, large field of view, high resolution, low distortion, small size and the like, and is suitable for the head-mounted display and similar devices.

The invention provides a total refraction immersed projection optical system and device and the application thereof, for imaging pattern in object plane of the optical system into image plane of the optical system; the optical system comprises six lens sets in the light axis direction, where the first, third, fifth and sixth have positive focal power and the second and fourth lens sets have negative focal power; aperture grating is located between the fifth and sixth lens sets; high refractivity liquid medium is filled between the image plane and lens closest to the image plane; the optical surface of each lens is spherical or planar. And the invention implements large numeric aperture, high resolution and better imaging quality; enlarges object-side working distance but does not introduce nonsphere, reduces difficulty in optical machining, detection and mounting and check, and besides, effectively reduces the making cost.

A high-resolution grating interferometer based on high-density gratings comprises a linear polarization light source, a polarization beam splitter, a first reflector, a second reflector, a third reflector, a fourth reflector, a first quarter wave plate, a second quarter wave plate, a data acquisition, processing and control unit, a double-frequency heterodyne interference photoelectric detection unit and an auto-collimation device, wherein the double-frequency heterodyne interference photoelectric detection unit is composed of a non-polarization beam splitter, a first polarization analyzer placed on orthogonal double-frequency linearly polarized light by 45 degrees, a first detector corresponding to the first polarization analyzer, a second polarization analyzer placed on the orthogonal double-frequency linearly polarized light by 45 degrees and a second detector corresponding to the second polarization analyzer. The high-density gratings are designed to have negative first-class high diffraction efficiency. Thus, subdivided gratings are adopted, so that light beams are diffracted by a scale grating many times and finally are vertically reflected to the reflectors, and light paths return by the way that light paths come; the light beams are diffracted by the scale grating many times, so that a high optical subdivision multiple is obtained, and the resolution of the grating interferometer is improved.

The invention, which belongs to the spectrum measurement instrument field, provides an MEMS-scanning-micromirror-based double-pass grating monochrometer optical path structure. The double-pass grating monochrometer optical path structure is composed of an optical circulator, a fiber signal input port, an incident fiber port, a collimation and focusing mirror, an MEMES micro mirror, a grating, a plane mirror and an emergent fiber port. The fiber signal input port is connected with a first port of the optical circulator. An optical signal passes through a second port of the optical circulator and enters free space through the incident fiber port; after collimation of a doublet lens, the optical signal irradiates the MEMES micro mirror; the MEMES micro mirror reflects the optical signal to the grating to carry out first-time diffractive splitting; the plane mirror reflects the optical signal to the grating again according to the same path to carry out second-time diffraction; and then the processed signal enters the incident fiber port. According to the invention, the structure is mainly applied to the design and manufacturing field of the spectrum measurement instrument.

An integrated structure of auto focus (AF) and optical image stabilizer (OIS) mechanisms includes a lens holder, a frame, magnets, suspension elements, and a driver board. The lens holder has an AF coil disposed outside thereof and is suspended in the frame. The inner edges of the sidewalls of the frame are close to but do not contact the outer edge of the AF coil. The magnets are disposed between the frame and the lens holder and correspond to the outer edge of the AF coil, for driving the lens holder back and forth along an optical axis (i.e. the Z axis). The suspension elements suspend the frame in the direction of the optical axis. The driving board has fine pattern coils each corresponding to one of the magnets, for driving the frame laterally (i.e. along the X-axis and / or Y-axis) with respect to the optical axis.

An ophthalmological measuring device for determining geometric structures in an eye includes an optical, triangulating measurement system for determining at least one geometric reference in the eye by triangulation, and an optical, interferometric measurement system for determining geometric detailed structures in the eye by optical interferometry. The measuring device is designed to position the geometric detailed structures determined by the interferometric measurement system on the basis of the at least one geometric reference in the eye determined by the triangulating measurement system. This firstly allows the interferometric measurement system to register geometric detailed structures in the eye with a high optical resolution and at places that are not visible to the triangulating measurement system, and secondly allows the positioning of said geometric detailed structures in the eye on the basis of geometric references that are determined by the triangulating measurement system without significant movement artifacts.

The invention discloses miniature spectrograph which is based on a stepping motor-based and comprises an optical fiber connector, an entrance slit, a reflecting mirror, a blazed grating, a focusing mirror and a detector, wherein, the reflecting mirror includes an external framework as well as a plane mirror and a stepping motor which are arranged in the external framework. By adopting the stepping motor and a novel light path structure, the miniature spectrograph provided by the invention is characterized by good applicability and simple light path structure, and can overcome the defects of large signal noise, complicated optical structure and the like in the folding structure light path of the prior miniature spectrograph. In addition, the miniature spectrograph provided by the invention has the advantages of wide applicable spectral range, flexible use and portability, and is characterized in that no error is introduced, no change of internal resistance occurs, and the plane mirror can rotate at an angle of 360 DEG.

The present invention provides a separating agent for enantiomeric isomers which exhibits high optical resolving power together with solvent resistance. That is, the present invention provides a separating agent for enantiomeric isomers including a polysaccharide derivative such as a carbamate derivative or ester derivative of cellulose or amylose carried on a porous carrier such as silica gel, in which the porous carrier having an epoxy group and part of hydroxyl groups of the polysaccharide derivative are chemically bonded.

Improved ophthalmological surgical methods, systems and devices, employing a colorant.

The invention discloses a camera module. The camera module comprises a lens module, a shell, a bottom plate and a photosensitive chip, the mean square error radius of the focusing image point when thedistance from the object point on the optical axis to the object space main surface of the lens module is smaller than 40mm is smaller than the mean square error radius of the focusing image point when the object point on the optical axis is located at infinity; the lens module sequentially comprises a first lens group, an aperture and a second lens group from the object side to the image side ofan optical axis, the first lens group and the second lens group have positive focal power. The object-side clear aperture of the first lens group is larger than the image-side clear aperture of the first lens group, and the object-side clear aperture of the second lens group is smaller than the image-side clear aperture of the second lens group, and specific process parameters of the position relationship between the lens module and the photosensitive surface of the photosensitive chip are given. The structure is beneficial to reducing the distance from the image side end surface of the lensto the photosensitive chip during close-range imaging, avoids adopting a distance increasing mode to realize close-range photographing, and is beneficial to miniaturization of the structure.

The invention relates to a low-distortion, broadband-spectrum and high-definition wide-angle aerial shooting monitoring lens. The low-distortion, broadband-spectrum and high-definition wide-angle aerial shooting monitoring lens comprises a front lens group A, a variable diaphragm B, a rear lens group C and a color filter D which are sequentially arranged along an incidence direction of a light rayfrom left to right, wherein the front lens group A comprises a positive crescent lens A-1, a negative crescent lens A-2, a negative crescent lens A-3, a dual-convex lens A-4, a dual-concave lens A-5,a positive crescent lens A-6 and a dual-convex lens A-7 which are sequentially arranged along the incident direction of the light ray from left to right, and the rear lens group C comprises a dual-convex lens C-1, a dual-concave lens C-2, a dual-convex lens C-3 and a dual-convex lens C-4 which are sequentially arranged along the incident direction of the light ray from left to right. The invention also relates to an imaging method of the low-distortion, broadband-spectrum and high-definition wide-angle aerial shooting monitoring lens. Eleven full-spherical lenses are used, the low-distortion,broadband-spectrum and high-definition wide-angle aerial shooting monitoring lens has a compact optical structure, the full-field angle is larger than 84 degrees, the distortion is smaller than 2%, the optical resolution is high, and the low-distortion, broadband-spectrum and high-definition wide-angle aerial shooting monitoring lens is adaptive to a high-definition camera with pixels beings 12 millions, is favorable in visual light and near-infrared band imaging and is suitably used for monitoring sea lane in a large range.

The invention belongs to the field of spectrum measurement instruments. In order to provide a monochromator having characteristics of simple structure and small size and meeting a high resolution requirement, the technical scheme adopted by the invention is a high-resolution double-grating monochromator optical path apparatus, wherein the structure comprises an optical circulator, an optical fiber signal input port, an incident optical fiber port, a collimating and focusing lens, a grating 1, a grating 2, a grating rotation mechanism and an emergent optical fiber port, the optical fiber signal input port is connected to the first port of the optical circulator, an optical signal passes through the second port of the optical circulator, enters a free space from the incident optical fiber port, is collimated by a cemented doublet, and then irradiates on the grating 1 so as to produce first diffraction, the grating 1 diffracts the optical signal onto the grating 2 to produce second diffraction, the grating 2 diffracts the optical signal to the grating 1 according to the original path to perform third diffraction, and the third diffracted light returns to the cemented doublet according to the incident angle of the first diffraction. The high-resolution double-grating monochromator optical path apparatus of the present invention is mainly used for the design and the manufacture of spectrum measurement instruments.

The invention discloses a high-precision interference-type dual phase grating displacement sensor for surface topography measurement, which comprises a laser, a reflection-type cylindrical holographic phase grating, two symmetrically-arranged plane reflectors, a reference plane grating with the linear density double that of the reflection-type cylindrical holographic phase grating, two symmetrically-arranged photodetectors, two signal processing devices connected with the two photodetectors respectively, a measurement lever with one end connected with the reflection-type cylindrical holographic phase grating, and a contact pin connected with the other end of the measurement lever and contacted with the surface of a to-be-measured workpiece. The reflection-type cylindrical holographic phase grating generates + / - 1-order diffraction light with a diffraction angle to be theta, the light is reflected by the two plane reflectors and is then incident to the same grating area on the reference plane grating, two groups of different-order diffraction light interference fringes are generated in + / -theta angle directions respectively, the interference fringes are received by the two photodetectors respectively and are converted to electric signals, and the electric signals are transmitted to the signal processing devices for being processed.

An optical alignment method is for an optical module including a housing unit, a light-sensing unit, and a lens unit. The method includes: (a) through image-capturing techniques, finding a light-sensing component of the light-sensing unit and a predetermined reference point, and determining an actual total optical path length between the light-sensing component and an object position; (b) subtracting a correction distance from the actual total optical path length to obtain a corrected total optical path length; (c) finding a first center line that divides the corrected total optical path length in half; (d) through image-capturing techniques, finding opposite first and second edges of the lens unit, and determining a lens length between the first and second edges; (e) finding a second center line that divides the lens length in half; and (f) assembling the lens unit to the housing unit such that the first and second center lines overlap.

The invention relates to an eyepiece optical system with large field angle and high image quality and a head-mounted display device. The eyepiece optical system with large field angle and high image quality comprises a first lens group and a second lens group, which are coaxially and sequentially arranged along an optical axis from a human eye to an image source and satisfy a certain focal length relationship. The first lens group is composed of a first lens near the human eye and a second lens far away from the human eye. The second lens group is composed of one or two lenses. The first lens is biconvex. The optical surface, near the human eye, of the second lens is concave towards the human eye, and is aspheric. The spacing between the first lens and the second lens, the focal length relationship between the lenses in the second lens group and the materials of the lenses satisfy a certain relationship. The second lens group further includes a fourth lens and a fifth lens arranged separately. The eyepiece optical system of the invention has the advantages of large aperture, large field of view, high resolution, low distortion, small size, and the like, and is suitable for head-mounted displays and similar devices.

The invention discloses a whole-body high-resolution multispectral optical imaging system for a living body of a small animal. The system comprises an excitation light source, an excitation light spectroscope cone, an emitting light filter set, a microscope cone, an emitting light spectroscope cone, an imaging detector, a three-dimensional motion scanning platform, a rack and an image collecting workstation. The excitation light source enters the excitation light spectroscope cone through optical fiber coupling to form coaxial excitation light, the living body sample of the small animal on theplatform generates emitting light under irradiation of the excitation light, and the emitting light is filtered by the emitting light filter set; the microscope cone and the emitting light spectroscope cone conduct imaging at a visible light CCD and a near-infrared CCD respectively, the image collecting workstation connected with the detector can control the three-dimensional motion scanning platform to conduct high-resolution optical focusing and XY-direction whole-body scanning imaging in real time, and thus whole-body high-resolution multispectral optical imaging of the living body of thesmall animal is achieved. By means of the system, ultrahigh-optical-resolution imaging of visible light and near-infrared light of various wavebands can be achieved simultaneously, and the whole bodyof the living body of the small animal can be subjected to scanning imaging; the system is simple in structure and convenient to operate.

The invention discloses an optical recognition component, comprising: a transparent substrate; a patternized multi-layer film formed on the transparent substrate; and an antireflecting optical film formed in the gaps of the patternized multi-layer film. And the invention also provides a display unit comprising the optical recognition component, comprising: a display panel having a transparent substrate; a patternized multilayer film formed on the transparent substrate and an antireflecting optical film covering the gaps of the patternized multilayer film. And the invention advances a handwriting input device suitable for various flat panel displays, on the condition of not influencing the output pictures of the original displays, able to be used for the optical recognition device to clearly locate the relative position and able to improve optical recognition ratio.

In a semiconductor technology, a fine mask for a semiconductor and a method of forming a mask pattern using the same are disclosed. In order to improve accuracy of line width resolution and optical resolution in forming a pattern of a semiconductor wafer, the fine mask includes a first mask, including a first mask original plate, a first light-blocking pad pattern formed on the first mask original plate, a first main pattern including a plurality of first light-transmitting regions formed on the first light-blocking pad pattern, and a first sub-pattern including a plurality of phase shift regions between the first light-transmitting regions and at an outermost portion of the first mask original plate. A second mask includes a second mask original plate, a second light-blocking pad pattern formed on the second mask original plate, a second main pattern including a plurality of second light-transmitting regions formed on the second light-blocking pad pattern, and a second sub-pattern including a plurality of phase shift regions between the second light-transmitting regions.

The invention discloses a mask for a semiconductor device and a patterning method using the same. The mask for a semiconductor device includes a first mask including main patterns constituted by a plurality of split patterns arranged at intervals, and a second mask including first auxiliary patterns disposed corresponding to regions among the plurality of split patterns, and second auxiliary patterns disposed corresponding to edge parts of the plurality of split patterns. The plurality of split patterns may be formed as triangles or squares. Because the main patterns of the first mask is arranged in space, the patterned marginal portion can be more accurate, and the pattern can be more close to match the original form; by independently controlling the main pattern and assistant pattern, the optical neighborhood correction can be optimized, and the optical resolution can be improved by using the first mask and second mask even if the pattern dimension is below 90nm.

The present invention provides an optical module and its aiming, assembling method, the optical module includes a case unit, a sensitive unit fixed in the case unit, and a lens unit which the focusing source is on the sensitive unit. The case unit has an opening formed on one side. The lens unit is placed on the case and displayed in the opening relative to the sensitive unit frame. In addition, when assembling, the lens unit is inserted in the case unit by the opening, when aiming, only retrieving the center position of the lens coinciding to the center position of the sensitization unit to the object position after deducting the repairing optical length, can complete optical alignment, and greatly echance accuracy and conveniences when assembled.