Spectrum-based light-emitting fixture and spectrum-based light emission method
The present invention provides a spectrum-based light-emitting fixture and a spectrum-based light emission method. The spectrum-based light-emitting fixture has light sources with multiple emission peak wavelengths, the spectrum-based light emission method is based on waveband integral calculus, where absorption peaks in a given spectrum that meet energy variation requirements are identified, and their wavelengths are used to divide primary wavebands. Each primary waveband is further subdivided into multiple secondary wavebands, and the spectral energy of each secondary waveband is calculated through integration. The selected light sources have emission peak wavelengths that are close to and match the mid-wavelengths of the secondary wavebands. By matching the light sources with the spectral energy of the corresponding secondary wavebands, the adjustment of spectrum-based light emission is achieved, thus, the emission spectrum of the spectrum-based light-emitting fixture can highly restore the given spectrum with high accuracy.
1 . A spectrum-based light emission method, comprising the following steps:
(A) providing a given spectrum to a spectrum-based light-emitting fixture, wherein said given spectrum has absorption peaks that are presented as peaks and troughs in a variation of radiant energy values along a wavelength;
(B) dividing said given spectrum into primary wavebands B m based on identification of said absorption peaks in said given spectrum that meets certain energy variation requirements and using the wavelengths of said absorption peaks as boundaries;
(C) subdividing each primary waveband B m into multiple secondary wavebands B mn , where the light sources of said spectrum-based light-emitting fixture have emission peak wavelengths that are close to and match the mid-wavelengths of said corresponding secondary wavebands B mn , wherein the starting wavelength of each secondary waveband B mn is denoted as λ mnS , the ending wavelength is denoted as λ mnE , and the mid-wavelength of each secondary waveband B mn is calculated as (λ mnS +λ mnE )/2;
(D) integrating the spectral energy E mn of each secondary waveband B mn ; and
(E) matching the radiant flux of said corresponding light source with said spectral energy E mn of said corresponding secondary waveband B m .
2 . The spectrum-based light emission method, as recited in claim 1 , wherein step (A) further comprises normalizing said given spectrum, and using said normalized relative spectrum as a final given spectrum.
3 . The spectrum-based light emission method, as recited in claim 1 , wherein in step (B), said identified absorption peaks are absorption peaks that appear in the form of troughs.
4 . The spectrum-based light emission method, as recited in claim 1 , wherein in step (C), the bandwidth of each secondary waveband B mn that corresponds to (λ mnE −λ mnS ) meets the condition 2 nm≤(λ mnE −λ mnS )≤50 nm.
5 . The spectrum-based light emission method, as recited in claim 4 , wherein in step (C), the light source of said spectrum-based light-emitting fixture has an emission peak wavelength that is close to and matches the mid-wavelength of each of said secondary waveband B mn , within a 10 nm difference.
6 . The spectrum-based light emission method, as recited in claim 5 , wherein in step (D), said spectral energy E mn of each secondary waveband B mn is obtained by a simplified formula
E
mn
=
Σ
λ
mnS
λ
m
n
E
-
1
∅
λ
,
where Ø is the relative radiant energy value of said given spectrum.
7 . The spectrum-based light emission method, as recited in claim 6 , wherein in step (C), when said spectrum-based light-emitting fixture has already been manufactured, light sources corresponding to said spectrum-based light-emitting fixture have been selected with multiple emission peak wavelengths, said secondary waveband B m is subdivided based on the emission peak wavelength of said corresponding light source as the mid-wavelength, such that said light source of said spectrum-based light-emitting fixture has an emission peak wavelength that is close to and matches the mid-wavelength of each said-secondary waveband B mn .
8 . The spectrum-based light emission method, as recited in claim 6 , wherein in step (C), when said spectrum-based light-emitting fixture has already been manufactured, and light sources corresponding to said spectrum-based light-emitting fixture have been selected with multiple emission peak wavelengths, after subdividing said secondary waveband B mn , light sources with emission peak wavelengths that are close to the mid-wavelengths of said corresponding secondary wavebands B mn are selected as the actual light-emitting light sources of said spectrum-based light-emitting fixture, such that said actual light-emitting light sources of said spectrum-based light-emitting fixture have emission peak wavelengths that are close to and match the mid-wavelengths of said corresponding secondary wavebands B mn .
9 . The spectrum-based light emission method, as recited in claim 6 , wherein in step (C), after subdividing each said-primary waveband B m into multiple secondary wavebands B mn , the method further includes:
selecting light sources with emission peak wavelengths that are close to and match the mid-wavelengths of said corresponding secondary wavebands B mn as the light sources of said spectrum-based light-emitting fixture.
10 . The spectrum-based light emission method, as recited in claim 9 , wherein in the state where a single light source has multiple emission peak wavelengths based on a combination of different LED chips, said single light source is equivalently regarded as multiple light sources with different emission peak wavelengths in said spectrum-based light-emitting fixture, wherein the radiant power of each LED chip in said single light source is independently and adjustably set, corresponding to step (E), and setting the radiant flux of said light source with each emission peak wavelength is equivalent to setting the radiant power of said LED chip with the same emission peak wavelength in said single light source.
11 . The spectrum-based light emission method, as recited in claim 9 , wherein in the state where a single light source has multiple emission peak wavelengths based on the combination of different wavelength conversion materials in its packaging silicone, said single light source is equivalently regarded as multiple light sources with different emission peak wavelengths in said spectrum-based light-emitting fixture, corresponding to said step (E), and the radiant flux of each light source with a specific emission peak wavelength is equivalent to the mass ratio of said wavelength conversion material with the same emission peak wavelength to said packaging silicone.
12 . The spectrum-based light emission method, as recited in claim 11 , wherein in step (B), one primary waveband B 1 in said primary wavebands B m is defined using said absorption peaks at wavelengths of 431 nm and 486 nm as boundaries.
13 . The spectrum-based light emission method, as recited in claim 12 , wherein in step (C), said primary waveband B 1 is subdivided into four secondary wavebands B 11 , B 12 , B 13 , and B 14 , wherein the bandwidth of said secondary wavebands B 11 , B 12 and B 13 is 10 nm, and the bandwidth of said secondary waveband B 14 is 25 nm, the corresponding wavelength ranges of said secondary wavebands B 11 , B 12 , B 13 , and B 14 are 431 nm-441 nm, 441 nm-451 nm, 451 nm-461 nm, and 461 nm-486 nm, respectively, and the mid-wavelength of said secondary waveband B 11 is 436 nm, the mid-wavelength of said secondary waveband B 12 is 446 nm, the mid-wavelength of said secondary waveband B 13 is 456 nm, and the mid-wavelength of said secondary waveband B 14 is 473.5 nm.
14 . The spectrum-based light emission method, as recited in claim 13 , wherein LED chips with emission peak wavelengths in the ranges of 436±5 nm, 446±5 nm, 456±5 nm, and 473.5±5 nm are selected as the light sources for said spectrum-based light-emitting fixture to obtain emission peak wavelengths that match the mid-wavelengths of said corresponding secondary wavebands, and wavelength conversion matching for said LED chips is performed simultaneously, using fluorescent powders with emission peak wavelengths in the ranges of 495±5 nm, 535±5 nm, and 655±5 nm, respectively, to obtain emission peak wavelengths that match the wavebands other than said primary waveband B 1 .
15 . The spectrum-based light emission method, as recited in claim 13 , wherein in step (B), one primary waveband B 2 in said primary wavebands B m is defined using said absorption peaks at wavelengths of 686 nm and 850 nm as boundaries.
16 . The spectrum-based light emission method, as recited in claim 15 , wherein in step (C), said primary waveband B 2 is subdivided into eight secondary wavebands B 21 , B 22 , B 23 , B 24 , B 25 , B 26 , B 27 , and B 28 , wherein the bandwidth of said secondary wavebands B 21 , B 22 , B 23 , B 24 , B 25 , B 26 and B 27 is 20 nm, and the bandwidth of said secondary waveband B 28 is 24 nm, the corresponding wavelength ranges of said secondary wavebands B 21 , B 22 , B 23 , B 24 , B 25 , B 26 , B 27 , and B 28 are 686 nm to 706 nm, 706 nm to 726 nm, 726 nm to 746 nm, 746 to 766 nm, 766 nm to 786 nm, 786 nm to 806 nm, 806 nm to 826 nm, and 826 nm to 850 nm, respectively, and the mid-wavelengths of said secondary wavebands B 21 , B 22 , B 23 , B 24 , B 25 , B 26 , B 27 , and B 28 are 696 nm, 716 nm, 736 nm, 756 nm, 776 nm, 796 nm, 816 nm, and 838 nm, respectively.
17 . The spectrum-based light emission method, as recited in claim 16 , wherein LED chips with emission peak wavelengths within the wavelength ranges of said secondary wavebands B 11 , B 12 , B 13 , B 14 , B 21 , B 22 , B 23 , B 24 , B 25 , B 26 , B 27 , and B 28 are selected as the light sources for said spectrum-based light-emitting fixture, and fluorescent powders with emission peak wavelengths in the ranges of 736±5 nm, 796±5 nm, and 816±5 nm are selected to perform wavelength conversion matching with said LED chips to obtain emission peak wavelengths that match the mid-wavelengths of said corresponding secondary wavebands.
18 . The spectrum-based light emission method, as recited in claim 17 , wherein fluorescent powders with emission peak wavelengths in the ranges of 495±5 nm, 525±5 nm, 535±5 nm, 554±5 nm, 605±5 nm, and 655±5 nm are further selected to perform wavelength conversion matching with said LED chips to obtain emission peak wavelengths that match the wavebands other than said primary waveband B 1 and said primary waveband B 2 .
19 . A spectrum-based light-emitting fixture, comprising multiple light sources, in the state where each said-light source has at least one corresponding emission peak wavelength, said light sources of said spectrum-based light-emitting fixture exhibit multiple emission peak wavelengths, wherein said spectrum-based light-emitting fixture emits light according to the following steps:
(a) providing a given spectrum to said spectrum-based light-emitting fixture;
(b) dividing said given spectrum into primary wavebands B m based on identification of absorption peaks in said given spectrum that meet certain energy variation requirements and using wavelengths of said absorption peaks as boundaries;
(c) subdividing each said primary waveband B m into multiple secondary wavebands B mn , where the light sources of said spectrum-based light-emitting fixture have emission peak wavelengths that are close to and match the mid-wavelengths of said corresponding secondary wavebands B mn , wherein the starting wavelength of each said secondary waveband B mn is denoted as λ mnS , the ending wavelength is denoted as λ mnE , and the mid-wavelength of each said secondary waveband B mn is calculated as (λ mnS +λ mnE )/2;
(d) integrating the spectral energy E mn of each secondary waveband B mn ; and
(e) matching the radiant flux of said corresponding light source with said spectral energy E mn of corresponding secondary waveband B mn .
20 . The spectrum-based light-emitting fixture, as recited in claim 19 , wherein in step (c), the bandwidth of each secondary waveband B mn that corresponds to (λ mnE −λ mnS ) meets the condition 10 nm≤(λ mnE −λ mnS )≤40 nm.
21 . The spectrum-based light-emitting fixture, as recited in claim 20 , wherein in step (c), said light source of said spectrum-based light-emitting fixture has an emission peak wavelength that is close to and matches the mid-wavelength of each secondary waveband B mn , within a 5 nm difference range.
22 . The spectrum-based light-emitting fixture, as recited in claim 21 , wherein in step (d), said spectral energy E m of each secondary waveband B mn is obtained using a simplified formula
E
mn
=
Σ
λ
mnS
λ
m
n
E
-
1
∅
λ
,
where Ø is the relative radiant energy value of said given spectrum.