48 results about "Optical sorting" patented technology

The invention describes a method for isolating one or more genetic elements encoding a gene product having a desired activity, comprising the steps of: (a) compartmentalising genetic elements into microcapsules; (b) expressing the genetic elements to produce their respective gene products within the microcapsules; (c) sorting the genetic elements which produce the gene product having the desired activity using a change in the optical properties of the genetic elements. The invention enables the in vitro evolution of nucleic acids and proteins by repeated mutagenesis and iterative applications of the method of the invention.

A chute for an optical sorting machine allows objects to be sorted to drop under gravity from the lower end of the chute, thereby supplying the objects to an optical detection section. The chute is provided with: a first portion which includes a portion for receiving the objects to be sorted which are supplied from a supply section; and a second portion which continues from the first portion. The first portion is composed of a single part and has: flat surfaces along which the objects to be sorted flow down; and connection surfaces. The flat surfaces located upstream are bent downward and the connection surfaces located downstream are bent upward to form a smooth undulation in the surface along which the objects to be sorted flow down.

The invention relates to an optical flow control chip utilizing impinging stream and optical scattering force and application thereof for sorting micro-nano particles, belonging to the field of optical flow control chips. The optical flow control chip comprises a cylindrical optical separation cavity, wherein one side of the optical separation cavity is connected with an impinging stream inlet through an impinging stream channel, the other side of the optical separation cavity is provided with an auxiliary flow inlet and a sample flow inlet, the center line of a channel formed by converging of an auxiliary flow channel and a sample flow channel and the center line of the impinging stream channel are positioned on the same straight line, and two sides of the channel formed by converging of the auxiliary flow channel and the sample flow channel are respectively connected with an inlet of sheath flow through a sheath flow channel, and then are connected with the optical separation cavity; an optical fiber groove with a collimating lens, as well as a large-particle outlet and a small-particle outlet, is further formed in the optical separation cavity. According to the invention, a point with the minimal speed value is formed at the center of an optical sorting cavity, so that an optical scattering force can be used for sorting particles at the point, the average speed of sorting operation by the optical force is greatly improved, and the sorting precision and efficiency are improved.

The present invention intends to provide an optical sorting machine which can improve the collection rate of non-defective products without increasing the size of the machine. The optical sorting machine of the present invention includes a granular object feed unit including storage means that stores an object to be sorted, and transfer means that transfers the object to be sorted from the storage means; an optical sorting unit including optical detection means that detects an object to be sorted falling along a predetermined trajectory from an end portion of the transfer means, determination means that determines a type of the object to be sorted based on a detection signal from the optical detection means, an ejector that removes an object to be sorted determined as a specific type from the predetermined falling trajectory based on a determination result by the determination means, and a discharge hopper having a first discharge passage provided at a falling position of the object to be sorted falling along the predetermined trajectory, a second discharge passage provided at a falling position of the object to be sorted removed from the predetermined falling trajectory, and a third discharge passage formed between the first discharge passage and the second discharge passage; and conveyance means that conveys an object to be sorted discharged from the third discharge passage of the discharge hopper in the optical sorting unit to the storage means of the granular object feed unit.

The invention provides an integrated photolithography plate manufacturing method and a sorting method for producing LED chips. Wherein the method for making the integrated photoresist comprises the following steps: 1) two dividing lines arranged perpendicular to each other on the integrated photoresist divide the photoresist into four quadrants, and use the two dividing lines as abscissa lines and The ordinate forms a coordinate system; 2) in any quadrant, taking the zero point of the coordinate system as a reference, extending to the abscissa line and the ordinate direction to form a square standard cell area containing at least one grain template; 3) in four quadrants , consecutively set a plurality of comparison unit areas with the same graphics and specifications as the grain templates in the standard unit area, and the arrangement position of each grain template in each comparison unit area is the same as that of each grain template in the standard cell area , so as to obtain an integrated photolithography plate. This method quickly separates the crystal grains of the LED chip by designing the pattern and specification of the crystal grains on the integrated photolithography board.

Microspheres are sorted by resonant light pressure effects. An evanescent optical field is generated when light is confined within the interior of an optical element such as a surface waveguide, a tapered microfiber, or a prism. Microspheres brought within vicinity of the surface are subjected to forces that result from a coupling of the evanescent field to whispering gallery modes (WGM) in the microspheres. Alternatively, a focused laser beam is directed close to the edge of the microspheres to exert resonant optical forces on microspheres. Alternatively, standing optical waves are excited in the optical element. Optical forces are resonantly enhanced when light frequencies match WGM frequencies in the microspheres. Those microspheres for which resonance is obtained are more affected by the evanescent field than microspheres for which resonance does not occur. Greater forces are applied to resonating microspheres, which are separated from a heterogeneous mixture according to size.

Microspheres are sorted by resonant light pressure effects. An evanescent optical field is generated when light is confined within the interior of an optical element such as a surface waveguide, a tapered microfiber, or a prism. Microspheres brought within vicinity of the surface are subjected to forces that result from a coupling of the evanescent field to whispering gallery modes (WGM) in the microspheres. Alternatively, a focused laser beam is directed close to the edge of the microspheres to exert resonant optical forces on microspheres. Optical forces are resonantly enhanced when light frequencies match WGM frequencies in the microspheres. Those microspheres for which resonance is obtained are more affected by the evanescent field than microspheres for which resonance does not occur. Greater forces are applied to resonating microspheres, which are separated from a heterogeneous mixture according to size.