Optical glass, preparation method therefor and optical components thereof

[0077] The present invention provides a method for preparing the optical glass according to the present invention, which includes: weighing each component according to the proportion, mixing them uniformly, melting them, and then pouring or slipping them into a molding mold, or directly pressing them into shape.

[0078] Specifically, each component is weighed according to the specified ratio, mixed into batch materials, and melted in a platinum crucible at a temperature of 1230-1280 ° C. After the raw materials are melted into glass liquid, the temperature is raised to 1300-1280 ° C. 1340°C and turn on the stirrer to stir and homogenize, and the stirring time is controlled at 4-7h. After the stirring is completed, raise the temperature to 1350-1380°C and keep it warm for 5-10 hours to clarify and fully float the bubbles. Then lower the temperature to 1180-1220° C. and pour it into a molding mold, and finally process it after annealing to obtain the optical glass or optical element

[0088] The present invention will be described in more detail through examples below, but the present invention is not limited to these examples.

[0089] Embodiment 1-11 and ratio compare A, B, C

[0090] Table 1: Glass components and performance parameters of Examples 1-6

[0091]

[0092] Table 2: Glass components and performance parameters of Examples 7-11

[0093]

[0094] Table 3: Glass components and performance parameters of comparative examples A, B, and C

[0095]

[0096] Weigh the raw materials corresponding to the components of 1-11 examples shown in the table according to the specified proportions, mix them into batches, and melt them in a platinum crucible at a temperature of 1260°C until the raw materials are melted into glass After liquidization, the temperature was raised to 1330°C and the stirrer was turned on for stirring and homogenization, and the stirring time was controlled at 6h. After the stirring is completed, raise the temperature to 1370°C