公开(公告)号：US20230296813A1

公开(公告)日：2023-09-21

申请号：US18018520

申请日：2020-07-30

申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  OBSERVATOIRE DE LA COTE D’AZUR ,  UNIVERSITÉ CÔTE D’AZUR ,  UNIVERSITÉ GRENOBLE ALPES

发明人： François HENAULT ,  Alain SPANG

IPC分类号： G02B3/00 ,  G02B5/20 ,  G01J9/00

CPC分类号： G02B3/0056 ,  G01J9/00 ,  G02B5/20 ,  G02B2003/0093

摘要： The systems for inspecting an optical wave surface output from an optical device, the optical device comprising an output pupil, the inspection system comprising an optical measurement head and a computer for processing the images obtained from the optical measurement head. The optical measurement head comprises: a density gradient filter, the density varying periodically in the two directions of the space, a matrix array comprising at least four identical lenses, of square form, of the same focal length and disposed symmetrically, a matrix of photodetectors, each of the four lenses forming, of the pupil, an image in the plane of this matrix. The computer for processing the images comprises computation means that make it possible to calculate the partial derivatives






∂
Δ


∂
x




x
,
y


and


∂
Δ


∂
y




x
,
y






and of the wave surface Δ(x, y) in the plane of the output pupil.

公开(公告)号：US20220099497A1

公开(公告)日：2022-03-31

申请号：US17310393

申请日：2020-01-21

申请人： Centre National De La Recherche Scientifique ,  Observatoire De La Cote D'Azur ,  Université de Nice Sophia Antipolis ,  Université Grenoble Alpes

发明人： François HENAULT ,  Alain SPANG

IPC分类号： G01J9/00 ,  G02B9/64

摘要： Systems for inspecting a surface of an optical wave originating from an optical device are provided. The optical device includes an exit pupil, and the inspection system includes an optical measuring head and a computer for processing the images from said optical measuring head. The optical measuring head includes a density gradient filter, the density varying periodically in the two directions in space, a matrix frame having at least four identical lenses of square shape of the same focal length and being arranged symmetrically, and a photodetector array, each of the four lenses forming an image of the pupil in the plane of this array. The image processing computer includes computing means for computing the partial derivatives ∂ Δ ∂ x ⁢ ( x , y ) and ∂ Δ ∂ y ⁢ ( x , y ) of the wave surface Δ(x, y) in the plane of the exit pupil.

公开(公告)号：US20170130994A1

公开(公告)日：2017-05-11

申请号：US15127746

申请日：2015-03-24

申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

发明人： François HENAULT ,  Cyril CALIOT

IPC分类号： F24J2/18 ,  F24J2/16 ,  H04N5/232 ,  G01M11/08 ,  H04N5/225 ,  F24J2/12 ,  G01M5/00

CPC分类号： F24S23/79 ,  F24S23/71 ,  F24S23/77 ,  F24S2050/25 ,  G01M5/005 ,  G01M11/005 ,  G01M11/081 ,  H04N5/2258 ,  H04N5/23296 ,  Y02E10/42 ,  Y02E10/52

摘要： The invention relates to an apparatus for concentrating cosmic radiation originating from a celestial object, said apparatus comprising: a concentrating optical surface able to reflect incident cosmic radiation toward a target surface O′X′Y′, and liable to contain local surface errors and aiming and orientation errors; a system for inspecting the reflective optical surface; means for acquiring images of the optical surface from various viewpoints M′mn (X′mn, y′mn) that are located on the target surface, m varying from 1 to M and n varying from 1 to N, so as to obtain M×N images of the optical surface illuminated by the cosmic radiation, with M viewpoints along X′ and N viewpoints along Y′, where M>1, N>1 and M·N≧30; and a unit for processing the M·N acquired images, which unit is suitable for: calculating the slopes δΔ(P)/δx and δΔ(P)/δy for each point P(x,y) of the reflective optical surface, where: ∂ Δ  ( P ) ∂ x = g X   ɛ 0  ∑ m = 1 M  ∑ n = 1 N  sign  ( x mn ′ )   L  ( M mn ′ , P ) ∑ m = 1 M  ∑ n = 1 N  L  ( M mn ′ , P ) ,  and ∂ Δ  ( P ) ∂ y = g Y   ɛ 0  ∑ m = 1 M  ∑ n = 1 N  sign  ( y mn ′ )   L  ( M mn ′ , P ) ∑ m = 1 M  ∑ n = 1 N  L  ( M mn ′ , P ) , L(M′mn, P) being the luminance at a point of the image corresponding to the point P(x,y) of the reflective optical surface (2) observed from the viewpoint M′mn, ε0 the apparent angular radius of the celestial object and gx and gy preset coefficients; and determining from these slopes δΔ(P)/δx and δΔ(P)/δy, a local surface error ΔP(x,y) at the point P(x,y) of the reflective optical surface (2).