Process for creating an optical component for generating, from a given light source, a given near-field illumination

Patent metadata

Field	Value
Publication number	US-2022011569-A1
Application number	US-201917296116-A
Country	US
Kind code	A1
Filing date	Nov 20, 2019
Priority date	Nov 22, 2018
Publication date	Jan 13, 2022
Grant date	—

Abstract

Disclosed is a method for fabricating an optical component that is configured so as to generate on an illumination target in the near-field an illumination that has a determined pattern according to which each point (i) of the illumination target receives a quantity of light (alpha_i) via an illumination generated by an illumination light source that is incident on the optical component, which is placed between the illuminating light source and the illumination target.

First claim

1 . Method for fabricating an optical component that is configured so as to generate on a near field illumination target an illumination that has a determined pattern according to which each point (i) of the illumination target receives a quantity of light (alpha_i) via an illumination originating from an illumination light source which is incident on the optical component placed between the illumination light source and the illumination target, wherein the method includes the following steps:
(a) positioning an origin point O between the illumination light source and the illumination target; (b) for each point (i) of the illumination target, computing a direction (dir_i) which corresponds to the direction of the vector connecting the origin point O and the point (i) on the illumination target; (c) positioning a reference point A between the origin point O and the illumination target; (d) creating the optical component (Cff) whose surface passes through the reference point A and which, when the illumination originating from an illumination light source is incident on the optical component (Cff), generates an illumination comprised of the all the illuminations of direction (dir_i) and quantity of light (alpha_i); (e) for each point (z_i) of the optical component (Cff) that generates the illumination of direction (dir_i) and quantity of light (alpha_i), computing a corrected direction (dirc_i) which corresponds to the direction of the vector connecting the point (z_i) and the point (i) on the illumination target; (f) determining whether or not, for each point (i), the difference between the direction (dir_i) and the corrected direction (dirc_i) satisfies a predetermined criterion; (g) if, for each point (i), the difference between the direction (dir_) and the corrected direction (dirc_i) satisfies the predetermined criterion, fabricating the optical component that corresponds to the optical component (Cff), (h) if, for each point (i), the difference between the direction (dir_i) and the corrected direction (dirc_i) does not satisfy the predetermined criterion, reiterating the steps (d) to (f) by substituting (dir_i) with (dirc_i).

2 . The method according to claim 1 , wherein the step (f) further comprises determining whether on each point (i) the mean of the norms of the differences between the direction (dir_i) and the corrected direction (dirc_i) is less than a predetermined value.

3 . The method according to claim 1 , wherein the optical component is one of a concave optical component and a convex optical component.

4 . The method according to claim 1 , wherein the optical component is one of a mirror and a lens.

5 . The method according to claim 2 , wherein the optical component is one of a concave optical component and a convex optical component.

6 . The method according to claim 2 , wherein the optical component is one of a mirror and a lens.

7 . The method according to claim 3 , wherein the optical component is one of a mirror and a lens.

8 . The method according to claim 5 , wherein the optical component is one of a mirror and a lens.

Assignees

• Univ Grenoble Alpes
• Grenoble Inp Inst Polytechnique De Grenoble
• Centre Nat Rech Scient
• Univ Paris Sud 11

Inventors

• Meyron Jocelyn
• Mérigot Quentin
• Thibert Boris

Classifications

• G02B27/0977

  Reflective elements · CPC title

• G02B27/095

  Refractive optical elements · CPC title

• G02B27/0012 Primary

  Optical design, e.g. procedures, algorithms, optimisation routines · CPC title

• G06F17/11 Primary

  for solving equations {, e.g. nonlinear equations, general mathematical optimization problems (optimization specially adapted for a specific administrative, business or logistic context G06Q10/04)} · CPC title

• G02B27/0927

  Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat · CPC title