OPTICAL GLASS WITHOUT LEAD AND ARSENIC PRESENTING A HIGH INDEX OF REFRACTION

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Lead and arsenic free, and preferably gadolinium and further preferably also fluorine free, optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive, laser technology and/or micro lens arrays have a refractive index of 1.91≰nd≰2.05, an Abbe number of 19≰νd≰25 and have a low transformation temperature, namely of less than or equal to 470° C. and preferably of less than or equal to 450° C., as well as good producability and processability and crystallization stability.