US 2020/0022330 A1 · LIGHTING DEVICE FOR USE IN LIGHTING OF CHEESE

Abstract

The invention provides a method of selecting the suitability of a lighting device (100) for use in cheese lighting, the method comprising (a) defining a normalization factor (k) for a spectral power distribution (SPD(λ)) of lighting device light (101) of said lighting device (100) in a wavelength range of 380-780 nm, (b) defining the lighting device (100) suitable for use in cheese lighting when a cheese damage function value (CDFV) is equal to or below 2, wherein the cheese damage function value (CDFV) is defined as: (I) wherein: (II) wherein y (λ) is a 2-degree color matching function, and wherein DF(λ)=1 for 380 nm≤λ<410, and wherein for 410≤λ≤780: (III). CDFV = k × ∑ λ  SPD  ( λ ) · DF  ( λ ) · Δλ ( I ) k = 100 ∑ λ  SPD  ( λ ) · y _  ( λ ) · Δλ ( II ) DF  ( λ ) = 0.95 × e - ( λ - 410 22 ) 2 + 0.05 × e - ( λ - 410 105 ) 2 ( III )

Claims17

Dependent claims

A method of selecting the suitability of a lighting device for use in cheese lighting, the method comprising (a) defining a normalization factor (k) for a spectral power distribution (SPD(λ)) of lighting device light of said lighting device in a wavelength range of 380-780 nm, (b) defining the lighting device suitable for use in cheese lighting when a cheese damage function value (CDFV) is equal to or below 2, wherein the cheese damage function value (CDFV) is defined as:

CDFV
=
k
×
∑
λ

SPD

(
λ
)
·
DF

(
λ
)
·
Δλ
wherein:
k
=
100
∑
λ

SPD

(
λ
)
·
y
_

(
λ
)
·
Δλ
wherein y(λ) is the 2-degree color matching function, and
wherein DF(λ)=1 for 380 nm≤λ<410, and
wherein for 410≤λ≤780:
DF

(
λ
)
=
0.95
×
e
-
(
λ
-
410
22
)
2
+
0.05
×
e
-
(
λ
-
410
105
)
2
.

71 more elements

A lighting device configured to provide lighting device light having a cheese damage function value (CDFV) is equal to or below 2, wherein the cheese damage function value (CDFV) is obtained by (a) defining a normalization factor (k) for a spectral power distribution (SPD(λ)) of lighting device light of said lighting device in a wavelength range of 380-780 nm, (b) defining the lighting device suitable for use in cheese lighting when a cheese damage function value (CDFV) is equal to or below 2, wherein the cheese damage function value (CDFV) is defined as:

CDFV
=
k
×
∑
λ

SPD

(
λ
)
·
DF

(
λ
)
·
Δλ
wherein:
k
=
100
∑
λ

SPD

(
λ
)
·
y
_

(
λ
)
·
Δλ
wherein y(λ) is a 2-degree color matching function, and
wherein DF(λ)=1 for 380 nm≤λ<410, and
wherein for 410≤λ≤780:
DF

(
λ
)
=
0.95
×
e
-
(
λ
-
410
22
)
2
+
0.05
×
e
-
(
λ
-
410
105
)
2
.
wherein the lighting device light has a spectral power distribution with a at least two main bands providing intensity in the entire spectral region of 440-740 nm, with a first emission band having a first maximum in the range of 450-470 nm, a local minimum in the spectral range of 470-500 nm, and a second emission band having second maximum in the range of 600-620 nm, wherein the first maximum has a peak height of less than 50% and more than 20% of a peak height of the second maximum, wherein the second band has a bandwidth in the range of 100-170 nm, wherein the local minimum has a minimum intensity in the range of 50-90% of the first maximum.

72 more elements

Dependencies are inferred from the claim text.

Lighting device for use in lighting of cheese

Life of this patent

Lighting device for use in lighting of cheese

Life of this patent

Abstract

Claims17