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Preparation device and preparation method of dome cover window

A technology for preparing devices and windows, which is applied in chemical instruments and methods, self-melting liquid pulling method, single crystal growth, etc., can solve the problems of long processing cycle, affecting the shape and position accuracy and surface quality of the ball cover, and low yield. , to reduce processing costs, facilitate large-scale production, and improve production efficiency

Active Publication Date: 2021-12-03
安徽光智科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing cycle of this scheme is long and the yield is low, and the research on the ball scooping processing method and technology is a difficult problem. Consistency, etc. will affect the shape and position accuracy and surface quality of the dome cover

Method used

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  • Preparation device and preparation method of dome cover window
  • Preparation device and preparation method of dome cover window
  • Preparation device and preparation method of dome cover window

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preparation example Construction

[0037] First, an apparatus for preparing a dome cover window according to the present disclosure will be described.

[0038] refer to Figure 1 to Figure 4 , the preparation device 100 of the spherical cover window includes a crucible 1 , a mold 2 , a heating mechanism 3 , a clamping mechanism 4 and a pulling mechanism 5 .

[0039] The crucible 1 has an inner chamber 11 . The inner cavity 11 is used to hold the raw material 200 for preparing the spherical cover window 300 , and the projection profile of the inner cavity 11 on the horizontal plane covers the circle formed by the outer diameter of the spherical cover window 300 to be prepared. In the design, in the projection view of the horizontal plane, the relationship between the projected contours between the dome cover window 300 and the crucible 1 can be conveniently determined on the projection of the horizontal plane.

[0040] In the example shown in the figures, the inner cavity 11 of the crucible 1 is cylindrical. ...

Embodiment 1

[0063] use Figure 1 to Figure 4 The preparation device 100 and the layout of the dome cover window.

[0064] Raw material 200 is germanium material, and the solid density ρ of germanium material s 5.33g / cm 3 , liquid density ρ l 5.51g / cm 3 The inner cavity 11 of crucible 1 is cylindrical, and the diameter of inner cavity 11 is 180mm, and crucible 1 adopts graphite material to make; Mold 2 is cuboid, and top surface 22 is a square, and the side length D of square is 8.7mm, and side 23 is Rectangle, the height H of rectangle is 110mm; Die 2 is contained in the position (that is r=45mm) that is 45mm from the center line C1 of crucible 11; Post-processing amount Δd=4mm, satisfying D=(d+Δd)×ρ s / ρ l , the outer radius of the spherical cover window 300 to be prepared is 45mm (i.e. r=45mm); 14kg of germanium raw material is put into the crucible 1, and the liquid level height of the raw material 200 is 100mm after the material is changed, that is, the height of the rectangle o...

Embodiment 2

[0068] use Figure 1 to Figure 4 The preparation device 100 and the layout of the dome cover window.

[0069] The raw material 200 is silicon material, and the solid density ρ of silicon material s 2.33g / cm 3 , liquid density ρl 2.53g / cm 3 The inner cavity 11 of crucible 1 is cylindrical, and the diameter of inner cavity 11 is 250mm, and crucible 1 adopts graphite material to make; Mold 2 is cuboid, and top surface 22 is a square, and the side length D of square is 12.9mm, and side 23 is Rectangle, the height H of rectangle is 100mm; Die 2 is contained in the position (being r=60mm) that is 60mm from the centerline C1 of crucible 11; Post-processing amount Δd=4mm, satisfying D=(d+Δd)×ρ s / ρ l , the outer radius of the dome window 300 to be prepared is 60 mm (i.e. r=60 mm); 10.9 kg of silicon raw material is put into the crucible 1, and the liquid level height of the raw material 200 after the chemical is 95 mm, that is, the rectangular shape of the side of the mold 2 The...

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Abstract

The invention provides a preparation device and a preparation method of a dome cover window. The preparation device of the dome cover window comprises a crucible, a mold, a heating mechanism, a clamping mechanism and a lifting mechanism, wherein the crucible is provided with an inner cavity; the heating mechanism surrounds the crucible; the mold is placed in the crucible, the mold is provided with a slit, the slit penetrates through the mold in the vertical direction, the slit is communicated with the inner cavity at the bottom of the mold, the slit extends in the first horizontal direction of the horizontal plane, the mold is provided with a center line in the second horizontal direction perpendicular to the first horizontal direction, and the slit is symmetrical about the center line of the mold; the clamping mechanism is used for clamping a seed crystal; the lifting mechanism is connected to the clamping mechanism and can horizontally translate, vertically translate and rotate, so that the seed crystal clamped by the clamping mechanism is seeded at the slit and horizontally translate, vertically translate and rotate at the same time, the horizontal translating direction is a second horizontal direction, the vertical translating direction is a vertical direction perpendicular to the horizontal plane, and the rotation proceeds in a horizontal plane about the own axis of the seed crystal.

Description

technical field [0001] The present disclosure relates to the field of crystal preparation, in particular to a preparation device and method for a dome cover window. Background technique [0002] Optical domes (also known as dome windows) are mainly used to protect the optical windows of precision instruments, cameras, etc. used in special environments. Compared with the ordinary dome cover window, the dome cover window has a larger amount of grinding loss and higher processing difficulty. Common machining techniques require gradual grinding of the bulk material to near dome window size followed by finishing. For ultra-hard or expensive materials, such as germanium crystals, this solution is expensive and not suitable for large-scale mass production. The ball scooping technology developed in recent years, for example, CN108908104A published on November 30, 2018, discloses a ball scooping processing method for a sapphire dome cover. However, the processing cycle of this sch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B15/34C30B29/08C30B29/06C30B28/10
CPCC30B15/34C30B29/08C30B29/06C30B28/10
Inventor 狄聚青尹士平
Owner 安徽光智科技有限公司
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