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US 10,761,276 B2Granted
Passively aligned crossed-cylinder objective assembly
AssigneenLIGHT, Inc.
InventorsDavid Martin Hemenway, Aaron Brown, David C. Dawson, Kylan Hoener, Shelly Lin, Wolfram Urbanek
Life of this patent
Estimating the term…
Abstract
A cross-cylinder objective assembly includes a fast axis objective (FAO) situated along an optical axis for focusing an incident laser beam along a fast axis, a slow axis objective (SAO) situated along the optical axis for focusing the incident laser beam along a slow axis, and a lens cell having fast and slow axis objective receiving portions for registering the FAO and SAO at a predetermined spacing along the optical axis.
Claims21
A cross-cylinder objective assembly, comprising:
- a cylindrical fast axis objective (FAO) situated along an optical axis for focusing an incident laser beam along a fast axis;
- a cylindrical slow axis objective (SAO) situated along the optical axis for focusing the incident laser beam along a slow axis orthogonal to the fast axis;
- a lens cell comprising a first portion having a first internal diameter and a second portion having a second internal diameter larger than the first internal diameter, the lens cell having fast and slow axis objective receiving portions for registering the FAO and SAO at a predetermined spacing along the optical axis, the second portion of the lens cell having a non-circular shape in cross-section such that a side portion of the second portion is configured as a registering surface;
- and
- an optical mount defining a bore into which at least the first portion of the lens cell extends, the optical mount comprising a corresponding registering surface that engages the registering surface of the lens cell to inhibit rotation of the lens cell relative to the optical mount.
2 more elements
A method, comprising:
- selecting a lens cell from a plurality of different lens cells, each lens cell including a registering surface configured to engage a corresponding registering surface of a common optical mount associated with an optical axis to inhibit rotation of the lens cell relative to the optical axis, a fast axis objective (FAO) receiving portion for registering and securing an FAO to the lens cell, and a slow axis objective (SAO) receiving portion for registering and securing an SAO to the lens cell such that a focal axis of the SAO is orthogonal to a focal axis of the FAO, a portion of each lens cell having a non-circular shape in cross-section such that a side portion of each lens cell is configured as a registering surface;
- wherein each lens cell is different from each other lens cell by one or more of a spacing between the FAO receiving portion and the optical mount registering portion along the optical axis and a spacing between the SAO receiving portion and the optical mount registering portion along the optical axis.
A diode laser package, comprising:
- a mount comprising a lens cell receiving portion, a fiber receiving portion opposite the lens cell receiving portion, and a focusing volume extending between the lens cell and fiber receiving portions, the portions associated with an optical axis and defining respective apertures corresponding to the optical axis;
- an optical fiber secured in relation to the fiber receiving portion aperture so that an input face of the optical fiber is situated in the focusing volume at a selected position along and coaxial about the optical axis;
- a lens cell coupled to the lens cell receiving portion of the mount, a portion of the lens cell having a non-circular shape in cross-section such that a side portion of the lens cell is configured as a registering surface that engages a corresponding registering surface of the mount so as to inhibit rotation of the lens cell about the optical axis and an insertion surface that engages a corresponding insertion surface of the mount to inhibit translation of the lens cell in one or both directions along the optical axis, the lens cell including a fast axis objective (FAO) receiving portion and a slow axis objective (SAO) receiving portion;
- an FAO having an FAO focal axis and registered to the FAO receiving portion so as to inhibit rotation of the FAO in relation to the optical axis and to inhibit translation of the FAO in one or both directions along the optical axis and perpendicular to the FAO focal axis;
- and
- an SAO having an SAO focal axis orthogonal to the FAO focal axis and registered to the SAO receiving portion so as to inhibit rotation of the SAO in relation to the optical axis and to inhibit translation of the SAO in one or both directions along the optical axis and perpendicular to the SAO focal axis.
3 more elements
Dependencies are inferred from the claim text.