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US 10,371,500 B2Granted
Incident-light illumination for a variable working distance
AssigneeCarl Zeiss Industrielle Messtechnik GmbH
InventorsDominik Seitz, Nils Haverkamp
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AssigneeCarl Zeiss Industrielle Messtechnik GmbH
InventorsDominik Seitz, Nils Haverkamp
Estimating the term…
A lens device for an illumination assembly. The lens device has light-entry and light-exit surfaces and comprises at least one ring region. Each ring region extends along a circumferential direction about a central axis of the lens device, and comprises a plurality of area segments. Each area segment forms a circular arc portion of a respective ring region and comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction. At the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface, and at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface differing from the first angle.
A lens device for an illumination assembly, said lens device having a light-entry surface and a light-exit surface, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of area segments, wherein each area segment forms a circular arc portion of a respective ring region and wherein each area segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein, at the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface and wherein, at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface, said second angle differing from the first angle, wherein all area segments of the same ring region have the same first angle in the direction of the central axis at the first end and the same second angle in the direction of the central axis at the second end, and wherein the respective first angles of the ring regions are different from one another and the respective second angles of the ring regions are different from one another.
An illumination assembly for a measuring machine for measuring a workpiece by means of an optical sensor, comprising at least one illumination arrangement, and wherein the illumination assembly further comprises a lens device having a light-entry surface and a light-exit surface, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of area segments, wherein each area segment forms a circular arc portion of a respective ring region and wherein each area segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein, at the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface and wherein, at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface, said second angle differing from the first angle, wherein the illumination assembly comprises a plurality of illumination arrangements and wherein an illumination arrangement is assigned to each area segment.
An illumination assembly for a measuring machine for measuring a workpiece by means of an optical sensor, comprising at least one illumination arrangement, and wherein the illumination assembly further comprises a lens device having a light-entry surface and a light-exit surface, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of area segments, wherein each area segment forms a circular arc portion of a respective ring region and wherein each area segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein, at the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface and wherein, at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface, said second angle differing from the first angle, wherein the at least one illumination arrangement comprises a light source and/or the illumination arrangement is a light-exit surface of an optical waveguide.
A coordinate measuring machine for measuring a workpiece by means of an optical sensor, wherein the coordinate measuring machine further comprises an illumination assembly comprising at least one illumination arrangement, wherein the illumination assembly further comprises a lens device having a light-entry surface and a light-exit surface, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of area segments, wherein each area segment forms a circular arc portion of a respective ring region and wherein each area segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein, at the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface and wherein, at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface, said second angle differing from the first angle, wherein a measurement cone of the optical sensor extends along the central axis, wherein the illumination assembly comprises a plurality of illumination arrangements and wherein an illumination arrangement is assigned to each area segment.
A method for changing an illumination working distance of a coordinate measuring machine, wherein the coordinate measuring machine comprises an illumination assembly comprising a lens device, wherein the lens device extends along a circumferential direction about a central axis of the lens device, wherein the lens device has a light-entry surface and a light-exit surface, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of area segments, wherein each area segment forms a circular arc portion of a respective ring region and wherein each area segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein, at the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface and wherein, at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface, said second angle differing from the first angle, wherein all area segments of the same ring region have the same first angle in the direction of the central axis at the first end and the same second angle in the direction of the central axis at the second end, and wherein the respective first angles of the ring regions are different from one another, and the respective second angles of the ring regions are different from one another, said method comprising the following step:
Dependencies are inferred from the claim text.