Preparation device and 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: 2022-06-24
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 method of dome cover window
  • Preparation device and method of dome cover window
  • Preparation device and method of dome cover window

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Experimental program
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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 device 100 for preparing the dome 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 cavity 11 . The inner cavity 11 is used to hold the raw material 200 for preparing the dome cover window 300 , and the projected contour of the inner cavity 11 on the horizontal plane covers the circle formed by the outer diameter of the dome cover window 300 to be prepared. In the design, in the projected view of the horizontal plane, through the projection of the spherical cover window 300 and the crucible 1 on the horizontal plane, the relationship between the projected contours of the two can be easily determined.

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

Embodiment 1

[0063] use Figure 1 to Figure 4 The device 100 for preparing the dome cover window and its layout.

[0064] The raw material 200 is germanium material, and the solid-state density ρ of the germanium material s 5.33g / cm 3 , liquid density ρ l 5.51g / cm 3 The inner cavity 11 of the crucible 1 is a cylindrical shape, and the diameter of the inner cavity 11 is 180mm, and the crucible 1 is made of graphite material; A rectangle, the height H of the rectangle is 110mm; the mold 2 is installed at a position 45mm away from the center line C1 of the crucible 11 (that is, r=45mm); the thickness of the final product of the dome cover window 300 is 5mm (that is, d=5mm), Post-processing amount Δd=4mm, satisfying D=(d+Δd)×ρ s / ρ l , the outer radius of the dome cover window 300 to be prepared is 45mm (that is, r=45mm); 14kg of germanium raw material is put into the crucible 1, and the liquid level height of the raw material 200 after the material is 100mm, that is, the height of the r...

Embodiment 2

[0068] use Figure 1 to Figure 4 The device 100 for preparing the dome cover window and its layout.

[0069] The raw material 200 is silicon material, and the solid density ρ of the silicon material s 2.33g / cm 3 , liquid density ρ l 2.53g / cm 3 The inner cavity 11 of the crucible 1 is a cylindrical shape, and the diameter of the inner cavity 11 is 250mm, and the crucible 1 is made of graphite material; A rectangle, the height H of the rectangle is 100mm; the mold 2 is installed at a position 60mm away from the center line C1 of the crucible 11 (ie r=60mm); the thickness of the final product of the dome cover window 300 is 10mm (ie d=10mm), Post-processing amount Δd=4mm, satisfying D=(d+Δd)×ρ s / ρ l , the outer radius of the dome cover window 300 to be prepared is 60mm (that is, r=60mm); 10.9kg of silicon raw material is put into the crucible 1, and the liquid level height of the raw material 200 after the material is 95mm, that is, the rectangular shape on the side of the...

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Abstract

The disclosure provides a preparation device and a preparation method of a dome cover window. The preparation device of the spherical cover window includes a crucible, a mold, a heating mechanism, a clamping mechanism and a lifting mechanism. The crucible has an inner cavity; the heating mechanism surrounds the crucible; The mold, the slit communicates with the inner cavity at the bottom of the mold, the slit extends in the first horizontal direction of the horizontal plane, the mold has a centerline in the second horizontal direction perpendicular to the first horizontal direction, and the slit is symmetrical to the centerline of the mold ; The clamping mechanism is used to clamp the seed crystal; the lifting mechanism is connected to the clamping mechanism, which can translate horizontally, vertically and rotate, so that the seed crystal clamped by the clamping mechanism can be seeded at the slit and simultaneously Horizontal translation, vertical translation and rotation, the direction of horizontal translation is the second horizontal direction, the direction of vertical translation is the vertical direction perpendicular to the horizontal plane, and the rotation is carried out in the horizontal plane around the axis of the seed crystal itself.

Description

technical field [0001] The present disclosure relates to the field of crystal preparation, in particular to a preparation device and preparation method of a dome cover window. Background technique [0002] Optical domes (also known as dome windows) are mainly used to protect optical windows used in special environments such as precision instruments and cameras. Compared with the ordinary dome cover window, the dome cover window has a larger amount of grinding and is more difficult to process. Common machining techniques require gradual grinding of the monolith to near the size of the dome window, followed by finishing. For superhard or expensive materials, such as germanium crystals, this solution is expensive and not suitable for mass production. The ball fishing technology developed in recent years, such as CN108908104A published on November 30, 2018, discloses a sapphire ball cover processing method. However, the processing cycle of this scheme is long, the yield is lo...

Claims

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Application Information

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Patent Type & Authority Patents(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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