摘要:
In a method of making pixelated scintillators, an amorphous scintillator material in a molten state is pressed into a plurality of cavities defined by a plurality of walls of a mesh array. The molten scintillator material in the plurality of cavities is cooled to form a pixelated scintillator array. An x-ray imager including a pixelated scintillator is also described.
摘要:
Systems and methods for texturing substrates (e.g., glass, metal, and the like) and the textured substrates produced using such systems and methods are disclosed. An exemplary textured substrate includes a surface having a portion with a root-mean-square roughness between 40 to 1000 microns and an autocorrelation function greater than 0.5 for distances less than 50 microns. An exemplary system for texturing a substrate includes a plunger with a textured surface, where a portion of the textured surface has a root-mean-square roughness between 40 to 1000 microns and an autocorrelation function greater than 0.5 for distances less than 50 microns. An exemplary method for texturing a substrate includes the steps of generating a pattern defining a texture, and 3-D printing the pattern on the substrate to form the texture.
摘要:
The invention provides a lens forming apparatus that can suppress generation of burrs even if gaps between outer walls of an upper die and a lower die and an inner wall of a trunk die is made wide. A lens forming apparatus 11 according to the present invention includes a trunk die 12 having a through-hole 17 therein; first and second dies 13 and 14 that are fitted into the through-hole 17 from both ends thereof, respectively, and have pressing surfaces 20 and 30 for sandwiching and pressing a forming material 24; and induction-heating coils 15 and 16 that heat the first and second dies 13 and 14 to a temperature equal to or higher than a glass transition point, in a state where the trunk die 12 is not heated and the temperature thereof is set to a temperature equal to or lower than the glass transition point.
摘要:
A method for manufacturing a glass molding by using a molding device (100), the method including the steps of: supplying molten glass (82) from an outflow nozzle (12) onto an upper surface of a holding member (20), with an opening/closing portion (25) closed, and thereby forming a glass gob on an inner side of a drip pan ring (30); opening the opening/closing portion (25) after the glass gob reaches a prescribed amount, and thereby allowing the glass gob to fall; and press molding the glass gob by using a lower die (60) and an upper die (70), wherein in the step of supplying the molten glass (82) from the outflow nozzle (12) onto the upper surface of the holding member (20), a vibration generating device (40) vibrates the drip pan ring (30) at a prescribed frequency. A high-quality glass gob is formed and a high-precision glass molding is obtained.
摘要:
A composite mold includes a mold base having a molding surface, a first adhering layer formed on the molding surface, a first diffusion barrier layer formed on the first adhering layer, and a first protective layer formed on the first diffusion barrier layer. The material of the first protective layer is silicon-doped diamond-like carbon. A method for making the composite mold is also provided.
摘要:
A diffractive optical lens (1) includes a lower surface (10) and an upper surface (12). The lower surface (10) has an aspheric curvature. The upper surface (12) has a quasi-parabolic curvature. A plurality of diffractive stripes (220) is formed on the upper surface (12). A mold (2) for making the diffractive optical lens (1) includes a lower core insert (20) and an upper core insert (22). The low core insert (20) has an aspheric surface (200). The upper core insert (22) has a surface configured for forming the upper surface (200) of the diffractive optical lens (1). A method for making the mold (2) is also provided.
摘要:
A mold (1) includes a substrate (10), a metal core (20), and a protecting film (30). The substrate is made of NEOCERAM®, a kind of material resistance to heat shock and difficult to crack. The substrate defining a cavity (101) therein and the metal core integrally fixed in the cavity. The substrate has a projecting part (102), and the top of the projecting part defines a molding cavity (103) whose surface is covered with the protecting film. A method for manufacturing such mold includes the following steps: forming a NEOCERAM cuboid; machining a projecting part at one end of the NEOCERAM cuboid; machining a molding cavity in the projecting part; defining a cavity in the cuboid and integrally fixing a metal core in the cavity; and covering the surface of the molding cavity with a protecting film made of boron nitride (BN).
摘要:
A method of producing a disk having a radius of r and a thickness of 2h from an oxynitride glass by pressing, said method being characterized in that the pressing load (F), the pressing temperature (T), and the pressing time (t) are defined by the expression below. 1900 ≥ T ≥ 100 × log 10 ( 0.045 × π × r 4 t × h 2 × F ) + A ( 1 ) where, F: pressing load (N) T: pressing temperature (° C.) t: pressing time (s) &pgr;: ratio of the circumference to its diameter r: radius of disk formed by pressing (mm) h: half a thickness of disk formed by pressing (mm) A: constant depending on glass composition (° C.) defined by 1450° C.≦A≦650° C. According to this method, it is possible to establish the optimum conditions for making disks from oxynitride glass, and it is possible to provide disks of oxynitride glass suitable for use as high-performance magnetic disk having a high specific rigidity.
摘要翻译:一种通过压制从氮氧化物玻璃制造半径为r且厚度为2h的盘的方法,其特征在于,按压负荷(F),按压温度(T)和按压时间(t) 其中,F:按压负荷(N)T:按压温度(℃)t:按压时间pi:圆周与直径的比率:压制形成的圆盘的半径(mm )h:通过压制形成的盘的厚度(mm)A:根据由1450℃定义的玻璃组成(℃)恒定<= A <= 650℃根据该方法,可以 建立从氮氧化物玻璃制造盘片的最佳条件,并且可以提供适合用作高比刚度的高性能磁盘的氧氮化物玻璃盘。
摘要:
The invention provides a method for molding a block of a fused quartz glass by the plastic deformation of a starting block with smaller dimensions at a high temperature. The molding procedure is carried out in a graphite mold under compression at a temperature of 1700.degree. C. or higher in an atmosphere of helium at a pressure in the range, preferably, from 50 to 500 Torr. The cooling schedule as specified is also of importance in order that the molded quartz glass block is freed from any strain or cracks.