The invention relates to an infrared glass vacuum melting furnace. The infrared glass vacuum melting furnace comprises an upper furnace body and a lower furnace body, and the upper furnace body and the lower furnace body are independent mutually and can be communicated and separation-blocked according to demands so that infrared glass vacuum melting is realized in the upper furnace body and environmental moisture is thoroughly isolated. Through a vacuum negative-pressure environment, separation of a hydroxyl group from a structure is promoted so that glass hydroxyl removal is realized. Infrared glass melt normal-pressure discharging in the lower furnace body is carried out so that large-size and irregular-shape infrared glass product molding requirements are satisfied. The infrared glass vacuum melting furnace can produce infrared glass having good spectrum permeation performances, can effectively improve performance stability and optical homogeneity of the infrared glass, and is conducive to molding preparation of the large-size and irregular-shape infrared glass product.

Infrared glass vacuum melting furnace, melting system and melting method

The invention discloses a leakage-injection production device for non-oxide chalcogenide glass and a production method thereof, belongs to the technical field of infrared optical glass manufacture and mainly solves the problems of the conventional devices that the production efficiency is low and the production cost is relatively high. The leakage-injection production device is mainly characterized in that the inner chamber of a furnace main body is divided into a smelting chamber, a forming chamber and an atmosphere control chamber by partition boards; a furnace door is formed in the front face of each of the smelting chamber and the forming chamber; a quartz crucible, a quartz cover plate, a crucible heating device, a stirring device, a pull rod and a material leakage pipe are arranged in the smelting chamber, a ball body is arranged at the lower end of the pull rod, and the upper end of the pull rod is connected with a support device; a forming die, a forming platform and a die heating device are arranged in the forming chamber; and an exhaust tube and an aeration tube are arranged in the atmosphere control chamber, and a smelting vent hole and a forming chamber vent hole are respectively formed in the partition boards adjacent to the smelting chamber and the forming chamber. The leakage-injection production device has the characteristics of simple structure, convenience in operation, reliable performance, high production efficiency and use safety and is mainly used for carrying out leakage injection of the non-oxide chalcogenide glass.

Leakage-injection production device for non-oxide chalcogenide glass and production method thereof

A vacuum melting furnace for infrared glass, includes an upper furnace body and a lower furnace body that can be connected with each other or isolated from each other. Vacuum melting of the infrared glass is achieved in the upper furnace body wherein the influence of water in the environment is eliminated. The vacuum negative pressure environments can promote separation of hydroxyl in the structure, which achieves removing of hydroxyl in the glass, and then discharging of the molten infrared glass is conducted at atmospheric pressure in the lower furnace body. By using the vacuum melting furnace for infrared glass, infrared glass with good spectrum transmission performance can be obtained with improved property stability and optical homogeneity, which facilitates the preparation and molding of large sized and special-shaped infrared glass products.

Vacuum melting furnace for infrared glass and melting system and method thereof

The invention relates to a device and method for testing the stress of an infrared optical material, belongs to the technical field of infrared optical material test, and aims at solving the problems in testing the stress of the infrared optical material through which visible light cannot be transmitted in the prior art. The device is mainly characterized by comprising an infrared light source, an infrared optical system, a signal reception system, a computer acquisition, processing and display system and a test platform. Test is carried out based on the principle of angular measurement compensation of a polarization analyzer, when an angle of 45 degree is formed between an infrared polarizer and an infrared polarization analyzer, namely a vector stress is include, elliptically polarized light generates a stroke difference, and thus, the stress of the material can be calculated. The device is characterized by simple operation and convenient test, the stress of the infrared optical material, through which visible light cannot be transmitted, can be tested, stress test can be used to guide and optimize production technology, glass of a lower stress can be produced, the imaging quality of the infrared material can be further improved, and a high-level infrared imaging system can be produced on the basis.

Device and method for testing stress of infrared optical material

The invention provides a preparation method and a preparation device for chalcogenide glass. The method comprises three steps: first, vacuum low-temperature purification: conducting purification on glass raw materials at a first temperature under a vacuum condition, so as to remove impurities; second, vacuum high-temperature melting: melting the purified glass raw materials at a second temperature under the vacuum condition, so as to obtain molten glass; third, material discharge and formation: discharging the molten glass, and forming a finished glass product, wherein the pressure of the vacuum condition is lower than 1.0*10 Pa. The chalcogenide glass product prepared according to the three-step preparation method is high in optical homogeneity, excellent in spectrum penetration performance, and large in size.

Preparation method and preparation device for chalcogenide glass

The utility model discloses an infrared optical material stress test device, belongs to the technical field of infrared optical material tests, and aims to solve the problem of stress tests of non-transparent visible light infrared optical materials The infrared optical material stress test device is mainly characterized in that the device is composed of an infrared light source, an infrared optical system, a signal receiving system, a computer collection processing display system and a test platform The infrared optical material stress test device tests based on polarization analyzer measurement compensation principles, and when an infrared polarizer and an infrared polarization analyzer form a 45-degree angle (with a vector stress), generated elliptically polarized light generates a stroke difference, so as to calculate the stress of a material The device has the characteristics of being simple to operate and convenient to test, can realize stress tests of the non-transparent visible light infrared optical materials, and through stress tests, production processes are guided and optimized, glass with small stress is manufactured, imaging quality of the material is further raised, and foundations are laid for manufacturing a high-level infrared imaging system

Infrared optical material stress test device

The utility model provides a nonoxide chalcogenide glass leakage pouring production device and a production method thereof, and belongs to the technical field of infrared optical glass manufacturing. The nonoxide chalcogenide glass leakage pouring production device mainly resolves the problems that existing equipment is not high in production efficiency but high in production cost. The nonoxide chalcogenide glass leakage pouring production device is mainly characterized in that an inner chamber of a smelter body is divided into a smelting chamber, a forming chamber and an atmosphere control chamber through partition plates; the obverse side of the smelting chamber and the obverse side of the forming chamber are respectively provided with a furnace door; a quartz crucible, a quartz cover plate, a crucible heating device, a stirrer, a pull rod and a material leakage pipe are arranged in the smelting chamber, a sphere is arranged at the lower end of the pull rod, and the upper end of the pull rod is connected with a supporting device; a forming mold, a forming platform and a mold heating device are arranged in the forming chamber; an air exhaust pipe and an air charging pipe are arranged in the atmosphere control chamber, the partition plate of the smelting chamber and the partition plate of the forming chamber are provided with a smelting chamber air vent hole and a forming chamber air vent hole respectively, and the partition plate of the smelting chamber and the partition plate of the forming chamber are adjacent to each other. The nonoxide chalcogenide glass leakage pouring production device has the advantages of being simple in structure, convenient to operate, reliable in performance, high in production efficiency and safe to use, and is mainly used for leakage pouring of nonoxide chalcogenide glass.

Nonoxide chalcogenide glass leakage pouring production device

The invention provides an optical glass and a preparation method thereof and an optical element. The optical glass comprises the following components metered according to a compound: 5.1-15% of Al(PO3)3, preferably 7-13%; 25-50% of AlF3, preferably 28-47%; 3-25% of BaF2, preferably 5-20%, 3-25% of SrF2, preferably 5-20%; 15-45% of CaF2, preferably 20-40%; 0-4.9% of MgF2, preferably 0.5-4.5%; 0-3.5% of LaF3, preferably 0.5-3%; 0-3.5% of YF3, preferably 0.5-3%; 0-3.5% of GdF3, preferably 0.5-3%, and 0.5-8% of LiF, and preferably 1-5%. the above percentage is mass percentage. The optical glass has the advantages of low transition temperature, good chemical stability, good pigmentation degree and short wave uviol performance, and good crystallization performance, and is suitable for production processing.

Optical glass and preparation method thereof, and optical component

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