Hot-press forming preparation method of chalcogenide glass microlens

A technology of chalcogenide glass and hot press forming, which is applied in glass forming, glass pressing, glass manufacturing equipment, etc., can solve the problems of high cost, waste of raw materials, low processing efficiency, etc., achieve high production efficiency and reduce production cost , the effect of simple operation

Active Publication Date: 2020-01-17
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For small-diameter lenses, the traditional diamond turning process or single-piece molding method is used for...

Method used

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  • Hot-press forming preparation method of chalcogenide glass microlens
  • Hot-press forming preparation method of chalcogenide glass microlens
  • Hot-press forming preparation method of chalcogenide glass microlens

Examples

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Effect test

Embodiment 1

[0030] Example 1: As the component 2 Se 3 The chalcogenide glass is used as raw material to prepare microlenses, and the glass transition temperature T of the chalcogenide glass g 185℃, T s The softening temperature is 205° C., and its preparation method by hot pressing comprises the following steps:

[0031] (1) preparation figure 1 The thermoforming apparatus shown;

[0032] (2) Preparation of As by melting and quenching method 2 Se 3 The chalcogenide glass block is prepared into a spherical preform 8 with a diameter of 10 mm by mechanical cold processing, and the surface of the preform 8 is cleaned with absolute alcohol and dried;

[0033] (3) When the upper mold core 3 is separated from the lower mold core 4, place the preform 8 on the top of the lower mold core 4 and make it face the middle of the lower mold cavity 42;

[0034] (4) Vacuumize the vacuum chamber 1 by the vacuum pump 13, when the vacuum degree of the vacuum chamber 1 is lower than 10 -3 Pa, introduce...

Embodiment 2

[0041] Embodiment 2: take component as Ge 20 Sb 15 Se 65 The chalcogenide glass is used as raw material to prepare microlenses, and the glass transition temperature T of the chalcogenide glass g 270℃, softening temperature T s It is 290 ℃, and its preparation method by hot pressing comprises the following steps:

[0042] (1) preparation figure 1 The thermoforming apparatus shown;

[0043] (2) Preparation of Ge by melting and quenching method 20 Sb 15 Se 65 The chalcogenide glass block is prepared by mechanical cold processing into a disc-shaped preform with a thickness of 1.5mm and a diameter of 12mm, and the surface of the preform is cleaned with absolute alcohol and dried;

[0044] (3) When the upper mold core 3 is separated from the lower mold core 4, place the preform on the top of the lower mold core 4 and make it face the middle of the lower mold cavity 42;

[0045] (4) Vacuumize the vacuum chamber 1 by the vacuum pump 13, when the vacuum degree of the vacuum ch...

Embodiment 3

[0052] Embodiment 3: take component as Ge 22 As 20 Se 58 The chalcogenide glass is used as raw material to prepare microlenses, and the glass transition temperature T of the chalcogenide glass g 290℃, softening temperature T s is 310°C, and its hot press molding preparation method includes the following steps:

[0053] (1) preparation figure 1 The thermoforming apparatus shown;

[0054] (2) Preparation of Ge by melting and quenching method 22 As 20 Se 58 The chalcogenide glass block is prepared into a spherical preform with a diameter of 10 mm by mechanical cold processing, and the surface of the preform is cleaned with absolute alcohol and dried;

[0055] (3) When the upper mold core 3 is separated from the lower mold core 4, place the preform on the top of the lower mold core 4 and make it face the middle of the lower mold cavity 42;

[0056] (4) Vacuumize the vacuum chamber 1 by the vacuum pump 13, when the vacuum degree of the vacuum chamber 1 is lower than 10 -3...

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Abstract

The invention discloses a hot-press forming preparation method of chalcogenide glass microlens. A chalcogenide glass block prepared by a melt quenching method is used as a preform, and the chalcogenide glass microlens is prepared by using a specific hot-press forming device through a specific mold and process. According to the hot-press forming preparation method for preparing chalcogenide glass microlens, a plurality of small-caliber chalcogenide glass microlenses can be fabricated by molding at one time, and small-caliber chalcogenide glass aspheric microlens lenses can be produced in a large scale. Production efficiency is high, and consistency and uniformity in shape, size and quality of the produced microlens lenses are high. In addition, according to the preparation method provided by the invention, the perform is used as a molding object, operation is simple, and raw materials can be fully utilized, so that production cost of the microlens can be greatly reduced. The chalcogenide glass microlens prepared by the preparation method can be widely applied to various small-caliber infrared imaging lenses required by vehicle-mounted night vision, hand-held industrial monitoring, infrared mobile phones and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of chalcogenide glass microlenses, in particular to a method for preparing chalcogenide glass microlenses by thermocompression molding, which can greatly improve the preparation efficiency of chalcogenide glass microlenses. Background technique [0002] Traditional infrared thermal imaging cameras generally use germanium single crystal as the lens material, and the cost of raw materials is extremely high, and the aspheric lens of germanium single crystal must be processed by diamond turning process, which results in low processing efficiency and serious waste of raw materials. In recent years, with the improvement of infrared detector manufacturing technology and the decline of cost, infrared thermal imaging cameras have gradually moved from military to civilian markets. The market demand for infrared thermal imaging lenses with good imaging quality and low price is increasing. [0003] Chalc...

Claims

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Application Information

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IPC IPC(8): C03B11/08C03B11/12C03B11/16
CPCC03B11/08C03B11/122C03B11/125C03B11/16
Inventor 张培晴林常规戴世勋王训四吴至豪宋宝安张巍
Owner NINGBO UNIV
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