72results 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.

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 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.

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.

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.

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

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 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.

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 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.