US 11,962,933 B2Granted

Device with glazing and associated thermal camera, and optimization methods

AssigneeSaint-Gobain Glass France

InventorsMathieu Berard, Keihann Yavari

Life of this patent

Estimating the term…

Abstract

A device includes a vehicle glazing, including, in a peripheral zone, a through-hole including an insert and a thermal camera.

Claims20

Dependent claims

A device, comprising:

a vehicle glazing of given thickness E1, the vehicle glazing having an outer main face oriented outward and an inner main face on a vehicle interior side, the vehicle glazing comprising, in a peripheral zone, a through-hole between the inner main face and the outer main face, the through-hole being delimited by a side wall of the vehicle glazing,
in said through-hole, an insert made of a material that is transparent in a range A of wavelengths in an infrared spectrum beyond 2.5 μm, ranging at least from 9.5 to 10.5 μm, the insert being of given thickness e, made of a material of refractive index n in the range A, with an input face oriented toward the vehicle interior and an output face, the input face fitting within a rectangle or square of width Wi and height Di with aspect ratio Di/Wi of at least 0.8 and of at most 1.2, with Di at most 35 mm, defining a center O which is an intersection of the diagonals of said rectangle,
a thermal camera, disposed on the inner main face side so as to receive an electromagnetic radiation after passing through said insert, the thermal camera comprising an input pupil, with a height p, and an infrared detection system in a range A and a lens, the camera being defined by:
an optical axis X′ passing through a center C of the pupil, C facing the insert,
a vertical viewing angle θ of at least 10°,
the thermal camera being of given volume defined by a point of contact T capable of touching the vehicle glazing first, or a plate on the inner main face of the vehicle glazing, or the insert, or a piece in a peripheral environment of said vehicle glazing, in position mounted in a vehicle,
an orthogonal reference frame (O, X, Y, Z) is defined in which X is an axis parallel to the optical axis X′, oriented toward the outer main face, Z is an axis normal to the optical axis, the axis Y is normal to X in a plane containing P0 oriented toward a top of the vehicle glazing, Z is normal to P0
T being in a plane P0 passing through O and C or Tv, which is a virtual point of contact, is defined as being a projection of T in said plane P0, w being the distance according to X and algebraic in the plane P0 from T or Tv and h is a distance according to Y in the plane P0 between C and T or Tv, the input main face of the insert having an inclination defined by an angle α with respect to X,
wherein a first straight line Dt1 is defined
y
=
-
tan
⁡
(
θ
2
)
⁢
x
+
(
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
-
sin
⁢
α
)
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
2
⁢
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
2
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
[
Math
⁢
49
]
a second straight line Dt2 is defined
y
=
tan
⁡
(
θ
2
)
⁢
x
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
50
]
Dt1 and Dt2 are secant at C0 (xC0, yC0) with
x
c
o
=
-
sin
⁢
α
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
+
e
n
⁢
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
⁢
cos
⁡
(
α
-
θ
2
)
2
⁢
tan
⁡
(
θ
2
)
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
[
Math
⁢
51
]
y
C
⁢
0
=
tan
⁡
(
θ
2
)
⁢
x
C
⁢
0
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
52
]
a third straight line Dt3 is defined
y=−tan(α)(x+w)−h [Math 53]
Dt1 and Dt3 are secant at E(xE,yE),
Dt2 and Dt3 are secant at F(xF,yF)
x
F
=
-
D
I
⁢
cos
⁢
α
⁢
tan
⁢
θ
2
+
D
I
⁢
sin
⁢
α
+
2
⁢
w
⁢
tan
⁢
α
+
2
⁢
h
2
⁢
(
tan
⁢
α
+
tan
⁢
θ
2
)
[
Math
⁢
54
]
y
F
=
tan
⁡
(
θ
2
)
⁢
x
F
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
55
]
x
E
=
-
(
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
-
sin
⁢
α
)
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
2
⁢
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
2
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
+
w
⁢
tan
⁢
α
+
h
tan
⁢
α
-
tan
⁢
θ
2
[
Math
⁢
56
]
y
E
=
-
tan
⁡
(
α
)
⁢
(
x
E
+
w
)
-
h
[
Math
⁢
57
]
xC being a negative value, yC being a positive value,
wherein
in a case a)
yF>yC0>yE
C(xC,yC) is inside a triangle of vertices C0(xC0,yC0) F(xF,yF) and E(xE,yE), at least 50% of the pupil being positioned in said triangle by including E;
or
in a case b)
when
|xC0|<|xF| [Math 58]
then yC<(yC0+5 mm)
a point K of intersection is then defined between a straight line y=yC0 and Dt3 therefore
x
K
=
w
-
y
C
⁢
0
-
h
tan
⁡
(
α
)
[
Math
⁢
59
]
y
K
=
y
C
⁢
0
[
Math
⁢
60
]
|
x
K
-
x
C
⁢
0
|
<
10
⁢
mm
.
[
Math
⁢
61
]

524 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/790,662Filed 23 Dec 2020
Priority: FR 20000193 Jan 2020
Published: US 2023/0074901 A19 Mar 2023
Granted: 16 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

G02B 5/208
Filters: for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
H04N 5/33
Transforming light or analogous information into electric information: transforming infrared radiation
B32B 17/10036
Characterized by the number, the constitution or treatment of glass sheets: comprising two outer glass sheets
B32B 17/10293
Functional features of the laminated safety glass or glazing: edge features, e.g. inserts or holes

Family

US 2023/0074901 A1Pre-grant publication · published 9 Mar 2023
US 11,962,933 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

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A device, comprising:

a vehicle glazing of given thickness E1, the vehicle glazing having an outer main face oriented outward and an inner main face on a vehicle interior side, the vehicle glazing comprising, in a peripheral zone, a through-hole between the inner main face and the outer main face, the through-hole being delimited by a side wall of the vehicle glazing,
in said through-hole, an insert made of a material that is transparent in a range A of wavelengths in an infrared spectrum beyond 2.5 μm, ranging at least from 9.5 to 10.5 μm, the insert being of given thickness e, made of a material of refractive index n in the range A, with an input face oriented toward the vehicle interior and an output face, the input face fitting within a rectangle or square of width Wi and height Di with aspect ratio Di/Wi of at least 0.8 and of at most 1.2, with Di at most 35 mm, defining a center O which is an intersection of the diagonals of said rectangle,
a thermal camera, disposed on the inner main face side so as to receive an electromagnetic radiation after passing through said insert, the thermal camera comprising an input pupil, with a height p, and an infrared detection system in a range A and a lens, the camera being defined by:
an optical axis X′ passing through a center C of the pupil, C facing the insert,
a vertical viewing angle θ of at least 10°,
the thermal camera being of given volume defined by a point of contact T capable of touching the vehicle glazing first, or a plate on the inner main face of the vehicle glazing, or the insert, or a piece in a peripheral environment of said vehicle glazing, in position mounted in a vehicle,
an orthogonal reference frame (O, X, Y, Z) is defined in which X is an axis parallel to the optical axis X′, oriented toward the outer main face, Z is an axis normal to the optical axis, the axis Y is normal to X in a plane containing P0 oriented toward a top of the vehicle glazing, Z is normal to P0
T being in a plane P0 passing through O and C or Tv, which is a virtual point of contact, is defined as being a projection of T in said plane P0, w being the distance according to X and algebraic in the plane P0 from T or Tv and h is a distance according to Y in the plane P0 between C and T or Tv, the input main face of the insert having an inclination defined by an angle α with respect to X,
wherein a first straight line Dt1 is defined
y
=
-
tan
⁡
(
θ
2
)
⁢
x
+
(
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
-
sin
⁢
α
)
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
2
⁢
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
2
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
[
Math
⁢
49
]
a second straight line Dt2 is defined
y
=
tan
⁡
(
θ
2
)
⁢
x
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
50
]
Dt1 and Dt2 are secant at C0 (xC0, yC0) with
x
c
o
=
-
sin
⁢
α
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
+
e
n
⁢
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
⁢
cos
⁡
(
α
-
θ
2
)
2
⁢
tan
⁡
(
θ
2
)
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
[
Math
⁢
51
]
y
C
⁢
0
=
tan
⁡
(
θ
2
)
⁢
x
C
⁢
0
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
52
]
a third straight line Dt3 is defined
y=−tan(α)(x+w)−h [Math 53]
Dt1 and Dt3 are secant at E(xE,yE),
Dt2 and Dt3 are secant at F(xF,yF)
x
F
=
-
D
I
⁢
cos
⁢
α
⁢
tan
⁢
θ
2
+
D
I
⁢
sin
⁢
α
+
2
⁢
w
⁢
tan
⁢
α
+
2
⁢
h
2
⁢
(
tan
⁢
α
+
tan
⁢
θ
2
)
[
Math
⁢
54
]
y
F
=
tan
⁡
(
θ
2
)
⁢
x
F
+
D
i
2
[
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
+
sin
⁢
α
]
[
Math
⁢
55
]
x
E
=
-
(
cos
⁢
α
⁢
tan
⁡
(
θ
2
)
-
sin
⁢
α
)
[
D
i
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
-
2
⁢
e
n
⁢
cos
⁡
(
α
-
θ
2
)
]
2
⁢
1
-
1
n
2
⁢
cos
2
(
α
-
θ
2
)
+
w
⁢
tan
⁢
α
+
h
tan
⁢
α
-
tan
⁢
θ
2
[
Math
⁢
56
]
y
E
=
-
tan
⁡
(
α
)
⁢
(
x
E
+
w
)
-
h
[
Math
⁢
57
]
xC being a negative value, yC being a positive value,
wherein
in a case a)
yF>yC0>yE
C(xC,yC) is inside a triangle of vertices C0(xC0,yC0) F(xF,yF) and E(xE,yE), at least 50% of the pupil being positioned in said triangle by including E;
or
in a case b)
when
|xC0|<|xF| [Math 58]
then yC<(yC0+5 mm)
a point K of intersection is then defined between a straight line y=yC0 and Dt3 therefore
x
K
=
w
-
y
C
⁢
0
-
h
tan
⁡
(
α
)
[
Math
⁢
59
]
y
K
=
y
C
⁢
0
[
Math
⁢
60
]
|
x
K
-
x
C
⁢
0
|
<
10
⁢
mm
.
[
Math
⁢
61
]

524 more elements

Facts

Application

17/790,662Filed 23 Dec 2020

Priority

FR 20000193 Jan 2020

Published

US 2023/0074901 A19 Mar 2023

Granted

16 Apr 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

G02B 5/208
Filters: for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
H04N 5/33
Transforming light or analogous information into electric information: transforming infrared radiation
B32B 17/10036
Characterized by the number, the constitution or treatment of glass sheets: comprising two outer glass sheets
B32B 17/10293
Functional features of the laminated safety glass or glazing: edge features, e.g. inserts or holes