78results about How to "Easy to quantify production" patented technology

The invention discloses a novel test tube rack device for a clinical laboratory. The novel test tube rack device comprises a test tube rack body, fixing units and clamping units, wherein the test tuberack body comprises a top-layer placing plate, four sets of telescopic columns and a bottom plate, the telescopic columns are distributed at the top end of the bottom plate in an array mode, the topends of the telescopic columns are connected with the top-layer placing plate through the fixing units, test tube placing holes are formed in the top-layer placing plate in an array mode, and bottom-end limiting cylinders corresponding to the test tube placing holes are arranged on the bottom plate, each clamping unit comprises a guide rod, a clamping plate, a bidirectional screw column and a rotating shaft, rectangular through holes are formed in the middle of the top layer placing plate, the guide rods are installed on the inner wall of the rectangular through holes in parallel, the clampingplates are formed by connecting arc-shaped plates, the clamping degree of the test tube rack to test tubes can be adjusted, the test tube rack is suitable for containing the test tubes with differentlengths and diameters, and the test tubes are not prone to being broken due to collision with the test tube rack.

An automatic production line device of pancakes is provided; 1. by means of the device, automatic precision weighing, automatic grease spreading, blanking and molding, baking to maturity, precise filling, overturning and pancakes closing and transferring are orderly performed; each step is automatically processed, production is fully and automatically controlled, the automation level is high, the production efficiency is greatly increased, large-scale production requirements of food factories are met, traditional manual practices are replaced, and the production process has significant progress; 2. the produced pancakes have uniform quality and taste which are easily acceptable to customers and is conducive to marketing; 3. the production process barely needs technical staff, human resources are greatly saved, and human factors on the quality and taste of pancakes are greatly reduced, which is conducive to quantitative production; 4. the production line has delicate design, unique technology and simple production technology; the produced pancakes have uniform quality which is conducive to increasing the competitiveness of pancake production.

The invention relates to the technical field of lighting, in particular to a lamp string. The lamp string comprises a plurality of light emitting assemblies and two wires parallel to each other. Each wire is composed of a conductor and an insulating layer wrapping the conductor. The insulating layer of each wire is provided with a plurality of openings. Conductor contact faces are arranged at the positions of the openings and located between each conductor and the corresponding insulating layer. The conductor contact faces at the corresponding positions of the two wires form a pair of conductor contact faces. Each light emitting assembly is connected with the corresponding conductor contact faces of the two wires in a crossing mode. The lamp string can be used as a decoration. When the lamp string is used, it is only required that the two wires are connected with the positive electrode and the negative electrode of a power source respectively, and the lamp string is convenient to use. The light emitting assemblies are welded to the conductor contact faces of the two wires, the welding difficulty is low, efficiency is high, and mass production is facilitated.

Polyamide 5X resin as well as a preparation method and application thereof are provided by the invention. The polyamide 5X resin not only adopts a bio-based material as a main raw material and is green and environment-friendly, but also has double melting peaks, good mechanical properties and good ductility, and can meet the application of polyamide 5X in the fields of spinning and film drawing. Polyamide 5X fibers prepared from the polyamide 5X resin show good stretchability, the number of broken ends is small, and the spinning efficiency is remarkably improved. In addition, film prepared from the polyamide 5X resin is uniform in thickness and excellent in mechanical property.

The invention discloses a laser radar optical system and a laser radar, which relates to the technical field of measuring instruments. The laser radar optical system comprises a transmitting system and a receiving system, wherein the transmitting system sequentially comprises a laser light source, a correction lens group and a collimating lens group along the light transmission direction; the laser light source is used for transmitting a plurality of light beams, the correction lens group comprises at least one correction lens, and the correction lens is used for correcting the plurality of light beams emitted by the laser light source, so that the central axis of each light beam is aligned with the entrance pupil center of the collimating lens group. The invention aims to provide the simple and good-effect laser radar optical system to improve the vertical spatial resolution of the laser radar.

The invention discloses a preparation method for modified barium titanate ceramics suitable for a super capacitor, wherein the preparation method comprises the following steps: step a, auxiliary material preparation: selecting SnO2, CaCO3, BaCO3 and TiO2 and mixing evenly in proportion to obtain an auxiliary material mixture, putting the auxiliary material mixture in a muffle furnace, sintering for a first time, taking out the material, and crushing the material to obtain an auxiliary material, wherein the granularity of the auxiliary material is 3-5 [mu]m; step b, raw material preparation: selecting BaCO3 and TiO2 and mixing, then putting the mixture into the muffle furnace, sintering for a second time, and crushing the product after sintering to obtain a fine powder material; and step c, raw material modification: selecting the auxiliary material and the fine powder material and mixing, putting the mixture into the muffle furnace, sintering for a third time, and crushing the product after sintering for the third time to obtain a finished product. The method has the beneficial effects that the process is simple, the cost is saved, fluctuation of the dielectric coefficient is smooth along with temperature variation, the granularity is relatively fine, and the stable composite material is convenient to synthesize.

The invention relates to a pressed candy for improving the vitality of male sperms, and a production method thereof. The pressed candy comprises, by weight, 80-110 parts of selenium-rich bacterium powder, 80-120 parts of nutritional yeast powder, 8-15 parts of vitamin C, 60-70 parts of lycopene, 450-600 parts of fructose and 1100-1400 parts of auxiliary materials. Zinc-rich yeast, the selenium-rich bacterium powder, lycopene, VC and fructose are adopted as raw materials of the pressed candy for improving the vitality of male sperms, the raw materials are simple and have clear effects, zinc and selenium are from foods and can be well absorbed, and the selenium-rich bacterium powder has high selenium content and has no toxic or side effects. The pressed candy has the advantages of immunity enhancing, sperm generation and maturation prompting and male fertility enhancing effects, good safety, effectiveness, small toxic and side effects, long storage life, and convenience in taking and carrying; and the production method is simple, and is convenient for qualified production.

The invention relates to the technical field of lithium-ion batteries, in particular to a polymer electrolyte composite membrane and a preparation method thereof. The polymer electrolyte composite membrane comprises a porous base membrane and an electrolyte membrane dip-coated on the porous base membrane, and the electrolyte membrane is mainly composed of a PVDF modified single lithium-ion conductor polymer, polyethyleneimine and polyoxyethylene according to a weight ratio of (40-70): (1-10): (20-40). The PVDF modified single lithium-ion conductor polymer, the polyethyleneimine and the polyoxyethylene in the polymer electrolyte composite membrane have a synergistic effect, and the polymer electrolyte composite membrane is prepared through the procedures of dissolving, mixing, dip-coating and drying, and has excellent ionic conductivity and tensile strength. The preparation method is simple in process and convenient to operate, and facilitates the quantitative production of the polymerelectrolyte composite membrane.

The invention discloses a stripping and slitting machine. The stripping and slitting machine comprises an emptying device, a film collecting device, a paper collecting device, a stripping rubber roller, a transmission traction device, an adjustable guide wheel, a fixed guide wheel and a guide wheel fixing pile; the transmission traction device is arranged between the emptying device and the stripping rubber roller; the adjustable guide wheel and the fixed guide wheel are arranged between the stripping rubber roller and the paper collecting device; the film collecting device is arranged above the stripping rubber roller; arresting pins are arranged at the two ends of the adjustable guide wheel; multiple limiting holes are formed in the guide wheel fixing pile; the arresting pins are arranged in the limiting holes; and an electronic meter counter is arranged on the fixed guide wheel. The adjustable guide wheel is additionally provided for reducing the stripping angle and the stripping force, so that incapability of totally transferring aluminum layers on films onto paper due to excessive stripping force cannot occur, and stripping is more thorough. The adjustable guide wheel can moveon the guide wheel fixing pile to adjust to a proper stripping angle so as to achieve a better stripping effect. In addition, the electronic meter counter is arranged on the fixed guide wheel for metering the length of the paper to achieve quantitative production of the paper.

The invention belongs to the technical field of food, and provides premixed flour needing no egg separation or flour scalding and used for a chiffon cake with scalded paste, and a using method thereof. The premixed flour comprises the following components in parts by weight: 30-50 parts of white granulated sugar, 30-50 parts of wheat flour, 2-5 parts of egg white powder, 1-5 parts of egg yolk powder, 1-5 parts of glutinous rice flour, 5-15 parts of edible starch and 1-5 parts of auxiliary materials. During preparation of the chiffon cake with scalded paste in the prior art, flour scalding andegg separating and stirring are two necessary links. However, when the premixed flour disclosed by the invention is used for making the chiffon cake with scalded paste, the two steps of flour scaldingand egg separating and stirring can be omitted, so secondary pollution of raw materials is avoided, manpower is saved, cost is reduced, making time is shortened, various costs of manufacturers are reduced, yield is favorably increased, and industrial and quantitative production of the chiffon cake is facilitated.

An intelligent apple bagging machine is characterized in that: it is characterized by: the left front movable finger (1), the limit arm hole (2), the left front clamp arm (3), the connection hole (4), the left limit arm ( 5), left positioning plate (6), left steering gear (servo motor) (7), left front mechanical arm with gear (8), limit arm connection hole (9), left rear mechanical arm with gear (10), left Mechanical arm (11), left limit arm (12), rotating shaft (13), left rear movable finger (14), left rear clamp arm (15), movable tongue (16), trigger plate (17), right front movable Finger (18), limit shaft (19), etc., composed of automatic paper box output, automatic bag support mechanism and sealing mechanism; it is mainly suitable for apple bagging in orchards, with significant economic benefits, greatly saving labor costs, and quickly improving work efficiency. Common bagging calculates 6-8 times of the average common bagging time on the intelligent apple bagging machine of the present invention.

The invention discloses a drug-loading microsphere capable of developing under X-ray for intravascular embolization. The drug-loading microsphere is characterized by being prepared from the followingraw materials in parts by weight: 3 to 35 parts of 5-25%w / v polyvinyl alcohol solution, and 1 to 10 parts of acrylic acid; the drug-loading microsphere is a microsphere obtained after barium precipitation. The drug-loading microsphere has the advantages that a simple, economic and batch-production type manufacturing technology of the nondegradable drug-loading microsphere capable of developing under the X-ray is provided; the prepared microsphere can be developed under the X-ray, cannot be degraded, and can carry drug for the intravascular embolization.

The invention discloses a photoelectrochemical sensor using a copper molybdate / barium titanate p-n heterojunction as an electrooptic active substance, as well as a construction method and application of the photoelectrochemical sensor. The construction method of the photoelectrochemical sensor comprises the following steps: 1) pretreatment of a conducting glass sheet; 2) preparation of nano copper molybdate; 3) preparation of a copper molybdate stock solution; 4) preparation of a barium titanate stock solution; and 5) preparation of the photoelectrochemical sensor: firstly modifying the nano copper molybdate on the conducting glass sheet, then using a pulling method to adhere the nano copper molybdate onto the surface of the conducting glass sheet, forming the p-n heterojunction, and thus obtaining an electrode modified with the copper molybdate / barium titanate p-n heterojunction. The photoelectrochemical sensor disclosed by the invention has a strong photoelectric signal in a visible light range, is high in sensitivity and high in selectivity, and is convenient and quick compared with an existing aminothiopropionic acid sensor. The copper molybdate is prepared with a hydrothermal method, preparation conditions are easy to control, and quantitative production of the photoelectrochemical sensor is facilitated.

The invention is applicable to the field of illumination, and provides a multi-path LED (light-emitting diode) driving circuit, a backlight driving device and a backlight illuminating system. The circuit comprises a voltage stabilizing unit, a first light dimming control unit, a second light dimming control unit and a driving unit, wherein the voltage stabilizing unit is used for carrying out voltage division and voltage stabilization on the voltage of a power supply so as to reduce the fluctuation range of the power supply; an input end of the voltage stabilizing unit is connected with the power supply; the first light dimming control unit is used for generating a first light dimming signal after power is supplied; the second light dimming control unit is used for generating a second light dimming signal after the power is supplied; the driving unit is used for carrying out driving control and brightness regulation respectively on a first path of LED and a second path of LED according to the first light dimming signal and the second light dimming signal. According to the multi-path LED driving circuit, the backlight driving device and the backlight illuminating system, the fluctuation range of the voltage of the power supply is decreased by the voltage stabilizing unit, the driving unit is prevented from being burned out due to too high voltage, and moreover, a plurality of light dimming signals are generated respectively by the independent light dimming control units, so as to drive the brightness of multiple paths of LEDs, so that the driving control of the LED is more flexible.

The invention belongs to the technical field of gene engineering, and particularly relates to Shewanella for expressing functionalized amyloid fibre, a construction method and application thereof. According to the invention, dissimilatory metal reducing bacteria shewanella MR-1 is used as a host of functionalized curli; the peptide structural domain LACQCL is translated into a nucleotide sequence;the nucleotide sequence is connected with the C end of a subunit csgA gene of amyloid fibre curli of escherichia coli through a flexible sequence; and finally, a gene segment csgA-LACQCL expressing functionalized amyloid fibre curli is constructed, so that the function of the peptide structural domain is realized. The invention further provides a heavy metal ion adsorption biological membrane, which has strong tolerance and adsorption effect on various heavy metal ions; furthermore, the heavy metal ion adsorption biological membrane still has excellent metal ion removal rate after repeated adsorption for many times; the defects of long synthesis time, specific adsorption, high cost and the like in the traditional process are overcome; and, the heavy metal ion adsorption biological membrane has good commercial application value in the aspect of metal ion adsorption treatment in a water environment.

The invention provides a control unit of an emergency broadcast. The control unit comprises a microphone module, a line voice frequency module and a power source module, wherein an microphone voice frequency message source input in the microphone module is connected with input ends of a volume adjustment module and a message source selection module through a voice frequency amplification and voltage limiting control module, three line voice frequency message source inputs in the line voice frequency module are connected with an input end of the message source selection module through an operational amplifier and the volume adjustment module, an output end of the message source selection module is respectively connected with input ends of a plurality of marshalling selection modules, and an output end of each marshalling selection module forms an emergency broadcast to be output by means of the operational amplifier. The control unit has the advantages that message source selection can be performed on microphone voice frequency input and line voice frequency input through the message source selection module, selected message sources are broadcasted to selected marshalling regions through the marshalling selection modules to achieve control of the emergency broadcast; and the control unit has the advantages of being simple in circuit design, convenient to operate, low in manufacture cost, capable of facilitating quantization production, and the like.

The invention discloses transparent polyamide, which comprises the following monomer raw materials in parts by weight: 100 parts of long-chain dicarboxylic acid or mixed long-chain dicarboxylic acid,20-70 parts of pentamethylene diamine and 80-30 parts of alicyclic diamine, wherein the molecular formula of the long-chain dicarboxylic acid is HOOC-R1-COOH, R1 comprises (CH2)n, n is 7, 9, 11, 13 or15, and the alicyclic diamine comprises one or more of 3,3-dimethyl-4,4-diaminodicyclohexylmethane (MACM), 4,4'-diaminodicyclohexylmethane (PACM) and 2,2-bis(4-aminocyclohexane)propane (PACP). The transparent polyamide disclosed by the invention has proper hydrogen bond density and low crystallization degree, so that good toughness and good transparency are achieved.

The invention belongs to the field of dimming illumination and particularly relates to a dimming power supply and a Bleeder protection circuit thereof. According to the Bleeder protection circuit, a first switch and a second switch are respectively connected to two ends of a Bleeder resistor in parallel, and when a switch tube Q1 in the Bleeder protection circuit is short-circuited, the two switches can jointly achieve severe circuit-to-ground short circuit to enable a protective tube F1 to be instantaneously fused, accordingly the whole circuit is protected, and dense smoke, explosion, fire disaster and other accidents are avoided. In addition, the Bleeder protection circuit does not cause circuit loss, the dimming matching and dimming depth of the circuit are not influenced, the EMI and EMC of the whole circuit are not influenced, the reliability of the circuit is improved, and the circuit is sound, can be quantitatively produced and has high cost performance.

The invention relates to an elbow manufacturing process and an elbow manufacturing device for a suit door, namely a bamboo-plastic strip elbow mold-pressing process and a bamboo-plastic strip elbow mold-pressing device. The process comprises the steps of 1, manufacturing a mold; 2, preparing bamboo-plastic soft strips; 3, performing the compression molding forming process; and 4, demolding. The device comprises a bamboo-plastic strip softening device and a mold pressing device, wherein the running of the bamboo-plastic strip softening device and the mold pressing device are controlled by an electric control cabinet. According to the bamboo-plastic strip elbow mold-pressing process and the bamboo-plastic strip elbow mold-pressing device, the production efficiency of bamboo-plastic strip elbows is improved, the production cost is reduced, and the mass production of the bamboo-plastic strip elbows is facilitated.

The invention discloses an analogue timer, and a setting method and an operating method thereof. The analogue timer comprises a singlechip microcomputer controller, at least one variable resistor, a memory cell and at least one output unit. The setting method comprises the following steps of: obtaining and storing an oscillation frequency ratio or a cycle ratio; changing a resistance value of the variable resistor; measuring and storing a corresponding voltage value; and repeating the changing resistance value step of the variable resistor and measuring and saving the corresponding voltage values step. The operating method comprises the following steps of: changing the resistance value of the variable resistor; measuring the corresponding voltage value, and calculating the resistance value of the variable resistor by utilizing a stored corresponding voltage value; calculating a time scale by utilizing the resistance value; calculating a numerical value of a counter according to the time scale and the stored oscillation frequency ratio of cycle ratio, and performing timing according to the numerical value; and outputting a timing finishing signal.

The invention relates to a preparation method of a transparent hydrophobic spherical silicon oxide aerogel adsorbent. The preparation method comprises the following steps: preparing a sol from a silicon source, a surfactant, a gel catalyst and a solvent, and carrying out ball-drop method, amine modification and supercritical drying. The water system is adopted as a main solvent, the process is convenient, raw materials are easy to obtain, the method is environmentally friendly, cost is saved, and large-scale industrial production is easy to achieve. The prepared transparent hydrophobic spherical silicon oxide aerogel adsorbent has the characteristics of excellent mechanical property, excellent hydrophobic property, efficient gas cycle adsorption performance and the like, and is an ideal high-performance gas adsorption material.

The invention relates to a method for preparing ultramicro nanomodified chellotosan, which comprises the following steps of: degrading high molecular weight chellotosan into medium and low molecular weight chellotosans by using a molecular weight control technology; carrying out primary micronized modification on the medium and the low molecular weight chellotosans by using a quaternary ammonium salt technology; and finally preparing the ultramicro nano chellotosan by using a sol-gel method. The modified ultramicro nano chellotosan becomes a material with favorable biological compatibility and biological activity promoting effect; and after being added into products on aspects of cosmetics, medical treatment, hygiene, biomedicine, agriculture, textile, foods, and the like, the modified ultramicro nano chellotosan has dual benefits of low manufacture cost and easy mass production in addition to improve the effects of odor removing performance, moisture retention and antibiotic property.

The invention relates to a double-roll-rim box iron square-shaped pulled and tied double-layer steel plate shear wall, and belongs to the field of structural engineering. On the basis of the concept for improving the elastic shearing buckling loads and the anti-shearing bearing force of the shear wall, roll-rim box iron is innovatively guided into the double-layer steel plate shear wall, outer-side steel plates interact with the roll-rim box iron, and the integral bearing force of the wall is improved. The two outer-side steel plates are pulled and tied through the roll-rim box iron, bulging bending deformation of the steel plates towards the outer side or buckling deformation of the steel plates towards the inner side can be limited, single-wave buckling stability losing of the two outer-side steel plates is avoided, and the elastic shearing buckling loads and the anti-shear bearing force of the outer-side steel plates are effectively improved. In addition, through the arrangement ofa component which is a steel plate shear wall unit, the consistent interior and edge part connection manner is effectively guaranteed, and local wall damage caused by the connected weak area cannot happen in the stress process; and through usage of the steel plate shear wall unit, integral wall installation is more rapid, the arrangement manner is more flexible, construction is convenient and fast, and the quality is easy to guarantee.

A mechanical apple bagging machine, characterized in that it is composed of an automatic paper output box, an automatic bag support mechanism and a sealing mechanism; it consists of a left front movable finger (A1), a limit arm hole (A2), a left front clamp arm (A3), a connecting Hole (A4), left limit arm (A5), left positioning plate (A6), left gear box (A7), left front mechanical arm with gear (A8), limit arm connection hole (A9), left rear mechanical arm with gear Arm (A10), Left Robotic Arm (A11), Left Limiting Arm (A12), Rotary Shaft (A13), Left Rear Movable Finger (A14), Left Rear Clamp Arm (A15), Movable Tongue (A16), Trigger Plate (A17), the right front movable finger (A18), the limit shaft (A19), the right limit arm (A20), the right mechanical arm connection (A21), the right positioning plate (A22), etc. The structure is simple, and the work efficiency can be quickly improved , 6‑8 times of the average ordinary bagging time on the invented mechanical apple bagging machine.

The invention discloses a preparation method of pickled pawpaw, and relates to the technical field of preparation of pickles. In order to solve the technical problems that the taste of the pickled pawpaw prepared in the prior art becomes bitter easily and the pickled pawpaw is unfavorable for preservation. The preparation method comprises the following steps: selecting raw fresh green-skinned pawpaw which has no pest and disease damage and is not rotten, cleaning the selected pawpaw, and peeling off the pawpaw; standing the peeled pawpaw for 20 to 40 minutes till white juice in the pawpaw flows out; cleaning the pawpaw subjected to standing with pure water, then splitting the pawpaw, and removing pawpaw seeds; slicing the pawpaw, and steeping the pawpaw slices into the pure water for later use; mixing and smashing 100 g of raw fresh hot pepper, 100 g of garlic, 200 g of white sugar and 50 g of refined salt; taking out 2 Kg of the pawpaw slices, stirring the pawpaw slices with the smashed hot pepper, garlic, white sugar and refined salt, and pouring white vinegar while stirring; placing the stirred pawpaw into a lightproof container for standing for 2 to 5 days, so as to obtain the edible pickled pawpaw. The method for preparing the pickled pawpaw is simple and favorable for mass production; meanwhile, the pickled pawpaw tastes good and crispy, does not have bitterness, and can be preserved for a long time without going bad.

The invention discloses polyamide 5X resin capable of rapidly crystallizing and molded and a preparation method thereof. The polyamide 5X resin has good mechanical properties and rapid crystallizationproperties. According to the invention, the nucleating agent is added in the polymerization process, and the nucleating agent is dispersed in the whole PA5X resin to accelerate the rate and the crystallinity of PA5X cooling crystallization so that the PA5X is short in processing cycle time and higher in crystallinity. Compared with addition in the later modification process, addition in polymerization has the advantages of small addition amount and better and more obvious crystallization effect, the production cost can be reduced, and the production applicability is excellent.

The invention relates to the technical field of water dispenser detection, in particular to an automatic test method. The automatic test method comprises the following steps that: a plurality of to-be-tested test host boxes are installed at a plurality of mounting positions of a water dispenser tray of an automatic test cabinet; the automatic test cabinet controls all to-be-tested test host boxesindependently by a control mechanism; the control mechanism inputs a detection instruction to each to-be-tested test host box, so that the to-be-tested test host box responds to the detection instruction to complete a predetermined action; the control mechanism detects and records test data when the predetermined action is completed; and the control mechanism analyzes and compares the test data ofall to-be-tested test host boxes to obtain test results of all to-be-tested test host boxes. With the automatic test method, to-be-tested host boxes of the vehicle-mounted water dispensers can be detected in batches; the work efficiency is high; and the quantitative production of the vehicle-mounted water dispensers is realized conveniently.

The invention relates to a composition for improving the number and lethality of autologous lymphocytes and application of the composition. The composition comprises an anti-human CD3 monoclonal antibody, interleukin, a composite nutrient composition, calf serum, heparin, colchicine and phytohemagglutinin P (PHA-P). The composition includes 150-250 ng of the anti-human CD3 monoclonal antibody, 500-1500 ng of the interleukin, 1500-2500 Ug of the composite nutrient composition, 0.8-1.2 mL of the serum, 20-28 Ug of the heparin and 500-1500 ng of the phytohemagglutinin. The culture solution prepared from the composition plays a positive role in production of typeface lymphocytes, and under the action of an anti-human CD3 monoclonal antibody, interleukin and phytohemagglutinin (PHA), the small lymphocytes can be stimulated to be converted into lymphoblasts and enter mitosis. After short-term culture, a large number of mitotic cells can be obtained through colchicine treatment, hypotonic treatment and immobilization, and quantitative production is facilitated.

The invention discloses a projection lens of varying parameter currency projection pearl eye in digital projector. It can satisfy for using in the same distance projector of the digital projector with single target area and three target areas based on the DLP, LCD and D-ILA technology by combining the multiple branch structure, the replaceable middle adjusting branch structure and back group compensating branch structure, so it can compensate every image errors formed by the TIR optical thickness difference from the different kind and type of digital projector and can get the pearl eye projection lens of every digital projector with 0.7 inches to 1.2 inches target area. Comparing to the present focal variation pearl eye lens, it has bigger relative aperture. So it can design the compound currency pearl eye projection lens based on the digital projector. The mode can intensify the currency of the pearl eye lens part and benefit for production, decreasing the cost and workload.