Process for realizing a thin lens and thin lens
AssigneeBarberini S.P.A.
InventorGianni Vetrini
Life of this patent
Estimating the term…
Abstract
The present invention concerns a method for making a thin lens and thin lens (1), said method being characterized in providing the following subsequent steps: a) taking a lens comprising a first optical layer (2), having a first surface (21) and a second surface (22) opposite to the first (21), a second optical layer (3), having a first surface (32) and a second surface (31) opposite to the first (32), and a third layer (4) interposed between said first (2) and second (3) optical layers in correspondence of the respective second surfaces (22, 31), said layers (2, 3, 4) being integrally coupled among each other; b) working the first surface (32; 21) of one (3; 2) of said optical layers (2, 3) for reducing its thickness. Furthermore, the present invention relates to a thin lens (1).
Claims17
A method for making a thin lens (1) having an overall thickness of 1.8 mm or less, said method comprising the following steps:
- taking a lens comprising:
- a first optical layer (2) made of glass, having a first surface (21) and a second surface (22) opposite to the first surface (21),
- a second optical layer (3) made of glass and having a first surface (32) and a second surface (31) opposite to the first surface (32), and
- a third layer (4) interposed between the first optical layer (2) and the second optical layer (3) in correspondence of the respective second surfaces (22, 31), wherein said layers (2, 3, 4) are integrally coupled among each other;
- and
- working the first surface (32) of the second optical layer (3) for reducing its thickness in order to be less than 0.5 mm.
A lens (I) comprising:
- a first optical layer (2) made of glass,
- a second optical layer (3) made of glass, and
- a third layer (4) interposed between said the first optical layer (2) and the second optical layer (3),
- wherein said first, second and third layers (2, 3, 4) are integrally coupled;
- wherein said lens (1) has an overall thickness of 1.8 mm or less ram;
- wherein said second optical layer (3) has a thickness less than 0.5 mm;
- wherein said first optical layer (2) has a thickness of 1.4 mm or less.
Dependencies are inferred from the claim text.