Refocusing device
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorNicolaas Cornelis Johannes Van Der Valk
Life of this patent
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Abstract
A focusing device comprises a base unit and a mirror unit which is translatable relative to the base unit parallel to an optical axis of the focusing device. The mirror unit is configured to receive incident light along the optical axis in a first direction and to reflect the incident light parallel with the optical axis in said first direction. The mirror unit comprises at least four mirrors, at least one of the mirrors being curved.
Claims13
A focusing device, comprising:
- a base unit;
- and
- a mirror unit,
- wherein the mirror unit is translatable, relative to the base unit, parallel to an optical axis of the focusing device,
- wherein the mirror unit is configured to receive incident light along the optical axis in a first direction and to reflect the incident light parallel with the optical axis in said first direction, wherein the mirror unit comprises an even number of mirrors,
- wherein at least one of the mirrors is curved, and
- wherein the number of mirrors is equal to at least four.
An interferometer comprising a focusing device, wherein the focusing device comprises:
- a base unit;
- and
- a mirror unit,
- wherein the mirror unit is translatable, relative to the base unit, parallel to an optical axis of the focusing device,
- wherein the mirror unit is configured to receive incident light along the optical axis in a first direction and to reflect the incident light parallel with the optical axis in said first direction, wherein the mirror unit comprises an even number of mirrors,
- wherein at least one of the mirrors is curved, and
- wherein the number of mirrors is equal to at least four.
Dependencies are inferred from the claim text.