Optical measurement device
First Claim
1. An optical measurement device for measuring an optical appearance of a surface of a sample (12), in particular the surface (14) of a human skin, wherein the optical measurement device comprises:
- a first illumination device (16) for illuminating the surface of the skin (14) with a first illumination beam (22), wherein the first illumination beam (22) is incident at a first angle of incidence (38) onto the surface (14); and
a detection device (28) for detecting a response beam (42), wherein the response beam (42) is a response of the sample (12) to the first illumination beam (22), comprising at least one screen (27) for intercepting the response beam (42) and at least an image detection component (29), characterized in that the optical measurement device (10) comprises a second illumination device (18), wherein the second illumination device (18) is providing a second illumination beam (24) with a second angle of incidence (54) at the surface (14), wherein the first angle of incidence (38) is different from the second angle of incidence,further characterized in that the screen is a full hemispherical screen, intercepting the response beam in about 360 degrees above the surface of the sample.
1 Assignment
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Accused Products
Abstract
An optical measurement device for measuring an optical appearance of a surface of a sample, in particular the surface of a human skin, wherein the optical measurement device comprises: a first illumination device (16) for illuminating the surface (14) with a first illumination beam (22), wherein the first illumination beam (22) is incident at a first angle of incidence (38) onto the surface (14); and a detection device (28) for detecting a response beam (22), wherein the response beam (42) is a response of the sample (12) to the first illumination beam (22), comprising at least one screen (27) for intercepting the response beam (42) and at least an image detection component (29). The optical measurement device (10) comprises a second illumination device (18), wherein the second illumination device (18) is providing a second illumination beam (24) with a second angle of incidence (54) at the surface (14), wherein the first angle of incidence (38) is different from the second angle of incidence (54).
23 Citations
20 Claims
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1. An optical measurement device for measuring an optical appearance of a surface of a sample (12), in particular the surface (14) of a human skin, wherein the optical measurement device comprises:
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a first illumination device (16) for illuminating the surface of the skin (14) with a first illumination beam (22), wherein the first illumination beam (22) is incident at a first angle of incidence (38) onto the surface (14); and a detection device (28) for detecting a response beam (42), wherein the response beam (42) is a response of the sample (12) to the first illumination beam (22), comprising at least one screen (27) for intercepting the response beam (42) and at least an image detection component (29), characterized in that the optical measurement device (10) comprises a second illumination device (18), wherein the second illumination device (18) is providing a second illumination beam (24) with a second angle of incidence (54) at the surface (14), wherein the first angle of incidence (38) is different from the second angle of incidence, further characterized in that the screen is a full hemispherical screen, intercepting the response beam in about 360 degrees above the surface of the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17)
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9. An optical measurement device for measuring an optical appearance of a surface of a sample, in particular the surface of a human skin, wherein the optical measurement device comprises:
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a first illumination device for illuminating the surface with a first illumination beam, wherein the first illumination beam is incident at a first angle of incidence onto the surface; and a detection device for detecting a response beam, wherein the response beam is a response of the sample to the first illumination beam, comprising at least one screen for intercepting the response beam and at least an image detection component; a second illumination device, wherein the second illumination device is providing a second illumination beam with a second angle of incidence at the surface, wherein the first angle of incidence is different from the second angle of incidence; and a base plate, having a measuring port through which the illumination beam is propagating in order to illuminate the surface and the response beam is propagating towards the detection device, wherein the measuring port has the shape of an elongated aperture in order to detect the response beam that is the response of the sample to the illumination beam, scattered at a sub-surface area, wherein the response beam is generated in a distance from the location of the illumination beam incident on the surface, and wherein the elongated aperture is designed such that the response beam shows a spatial distribution related to a depth at which the illumination beam was scattered in the sub-surface area.
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18. A method for inspecting a surface of a sample and measuring an optical appearance of the sample (12), in particular the surface (14) of a human skin, comprising the following steps:
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illuminating the surface (14) of the sample of the skin (12) with a first illumination beam (22) incident at a first angle of incidence (38) at the surface (14); intercepting a response beams (42), wherein the response beam (42) is a response of the sample (12) to at least the first illumination beam, wherein the intercepting is done by a full hemispherical screen in about 360 degrees above the surface of the sample; characterized by illuminating the surface (14) with a second illumination beam (24) incident at a second angle of incidence (54) at the surface (14); and estimating a first and/or at least a second correlation factor from the intercepted response beam (42); assigning the first and/or the at least second correlation factor to a first and/or a second feature of the optical appearance of the sample (12). - View Dependent Claims (19, 20)
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Specification