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OwnerJose Zimmer, Ulrich Peuchert +3inventors
InventorsJose Zimmer, Ulrich Peuchert, Jochen Alkemper, Yvonne Menke, Ina Mitra
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The present invention relates to a process for producing optical elements, in particular lenses made from an optoceramic, comprising a forming step, which step comprises the formation of a green body. The invention further relates to optical elements produced according to the before mentioned process. The process according to the present invention comprises a forming step including the application of a mould being close to the final geometry of the body to be formed (near net shape principle) including the application of moderate pressure between 0.1 MPa and 50 MPa, preferably between about 0.5 MPa and 25 MPa, in particular preferred between about 1 MPa und 12 MPa. The pressure is applied either on the ceramic powder mass during positioning of the ceramic powder mass into the form or is applied onto the ceramic powder mass within the form.
A process for the production of an optical element, especially a lens, consisting of an opto-ceramic, making use of a moulding step, said moulding step comprises the production of a green body, and the moulding step comprises the application of at least one near-net-shape mould, wherein moderate pressures of between about 0.1 MPa and 50 MPa, preferably between 0.5 MPa and 25 MPa, particularly preferred between about 1 MPa and 12 MPa, are applied either during filling of the ceramic powder into the mould on the powder batch or on the ceramic powder batch that is located in the mould.
Dependencies are inferred from the claim text.