A method and an apparatus serve for visualizing a signature mark on a spectacle lens. In order to identify the signature mark, an illumination light beam is directed onto the spectacle lens, which impinges on the spectacle lens, after impinging on the spectacle lens is reflected at a retroreflector, impinges once again on the spectacle lens, and finally is passed as an observation light beam to a camera. A reflection region of the illumination light beam on the reflector is varied by means of a moved first optical element.

Claims

21 · 2 independent · depth 3

21 granted claims

›1.independentA method for visualizing a signature mark on a spectacle lens, in which an illumination light beam is directed onto the spectacle lens, which impinges…+8

›2.↳ 1The method according to claim 1, wherein the reflector is fixed.d2

›3.↳ 1The method according to claim 1, wherein the reflection region of the illumination light beam on the reflector is moved linearly.d2+1

›5.↳ 1The method according to claim 1, wherein the reflection region of the illumination light beam on the reflector is moved circularly or elliptically.d2+1

›7.↳ 1The method according to claim 1, wherein the first optical element is a plane-parallel plate tilted with respect to an optical axis of the spectacle l…d2

›8.↳ 1The method according to claim 1, wherein the first optical element is a mirror.d2+1

›10.independentAn apparatus for visualizing a signature mark on a spectacle lens, comprisingnan illumination light source arranged on a first side of the spectacle l…+11

›11.↳ 10The apparatus according to claim 10, wherein the reflector is embodied in a fixed fashion.d2

›12.↳ 10The apparatus according to claim 10, wherein the apparatus comprises a drive device, which is coupled to the first optical element in such a way that …d2

›13.↳ 10The apparatus according to claim 10, wherein the apparatus comprises a drive device, which is coupled to the first optical element in such a way that …d2

›14.↳ 10The apparatus according to claim 10, wherein the first optical element is a plane-parallel plate tilted with respect to an optical axis of the spectac…d2

›15.↳ 10The apparatus according to claim 10, wherein the apparatus furthermore comprises at least one optical guide element for guiding the illumination light…d2+1

›17.↳ 10The apparatus according to claim 10, wherein the apparatus furthermore comprises at least one optical guide element for guiding the observation light …d2

›18.↳ 10The apparatus according to claim 10, wherein the first optical element is a prism having a wedge-shaped main surface.d2

›19.↳ 10The apparatus according to claim 10, wherein the first optical element is a plate having at least one undulatory surface.d2

›20.↳ 10The apparatus according to claim 10, wherein the first optical element is a mirror.d2+1

Classifications

4 codes

IPC · International Patent Classification

Section G — Physics

G01B9/00
G01M11/02
G03F7/20

USPC · US Patent Classification

356/124

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Pendency

1.6 y

592 days filing → grant

Office actions

non-final + final

Responses

no RCE

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Examiner

Tarifur Chowdhury

art unit 2886 · TC 2800

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Citations: 28 back · 0 forward

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Priority chain

2 priority documents

Priority

25 Nov 2011

earliest claimed

›Priority documents — 2

Type	Document	Date
provisional	US 61563661	25 Nov 2011
related publication	US 20130148111 A1	13 Jun 2013

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