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Author Topic: Spectrographic analyses of LEDs in their feral state.  (Read 92893 times)
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« Reply #800 on: September 12, 2012, 06:47:33 AM »

Everlight, Part # IR8323/C16


The camera interprets the NIR wavelength as a shade of purple; the light itself is essentially invisible unless you look directly down the "business-end" of the LED itself -- if this is done, a dull, deep cherry red color may be seen.

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Evaluations of flashlights, lasers, and analyses of LEDs in their feral state.
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« Reply #801 on: September 12, 2012, 07:00:16 AM »

Everlight, Part # IR8323/C16


The camera interprets the NIR wavelength as a shade of purple; the light itself is essentially invisible unless you look directly down the "business-end" of the LED itself -- if this is done, a dull, deep cherry red color may be seen.


Spectrometer's response narrowed to a band between 820nm and 860nm to pinpoint peak wavelength of 836.914nm.
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« Reply #802 on: September 13, 2012, 07:20:54 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 1 of this LED.
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« Reply #803 on: September 13, 2012, 07:22:15 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 1 of this LED; spectrometer's response narrowed to a band between 439nm and 460nm to pinpoint native peak wavelength, which is 452.660nm.
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« Reply #804 on: September 13, 2012, 07:22:42 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 1 of this LED; spectrometer's response narrowed to a band between 550nm and 600nm to pinpoint phosphor emission peak wavelength, which is 569.777nm.
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« Reply #805 on: September 13, 2012, 07:23:16 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 2 of this LED.
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« Reply #806 on: September 13, 2012, 07:24:37 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 2 of this LED; spectrometer's response narrowed to a band between 439nm and 460nm to pinpoint native peak wavelength, which is 447.693nm.
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« Reply #807 on: September 13, 2012, 07:26:01 AM »

Shenzhen Saiju Electronics Co., Ltd.  part # SJ-P001SWDX-XXXP




Spectrographic analysis of sample 2 of this LED; spectrometer's response narrowed to a band between 550nm and 600nm to pinpoint phosphor emission peak wavelength, which is 569.629nm.
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« Reply #808 on: September 16, 2012, 07:08:20 AM »

Panasonic, Part # LN21RCPH GaP Red LED




If=1.958mA.
The broadband nature and long peak wavelength tells me that this LED very probably has a GaP (gallium arsenide phosphide) operating chemistry.
The green spectral feature normally seen with GaP red LEDs has been effectively supressed by the strong red tint of this LED's case.
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« Reply #809 on: September 16, 2012, 07:09:58 AM »

Panasonic, Part # LN21RCPH GaP Red LED




If=1.958mA, spectrometer's response narrowed to a band between 660nm and 700nm to pinpoint peak wavelength of 680.094nm.
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« Reply #810 on: September 16, 2012, 07:12:22 AM »

Panasonic, Part # LN21RCPH GaP Red LED




If=19.28mA.
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« Reply #811 on: September 16, 2012, 07:12:58 AM »

Panasonic, Part # LN21RCPH GaP Red LED




If=19.28mA, spectrometer's response narrowed to a band between 660nm and 700nm to pinpoint peak wavelength of 678.611nm.
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« Reply #812 on: September 21, 2012, 06:43:01 AM »

Panasonic, Part # LN28CALXU Red LED




If=1.958mA.
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« Reply #813 on: September 21, 2012, 06:44:48 AM »

Panasonic, Part # LN28CALXU Red LED




If=1.958mA, spectrometer's response narrowed to a band between 640nm and 670nm to pinpoint peak wavelength of 656.442nm.
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« Reply #814 on: September 21, 2012, 06:45:11 AM »

Panasonic, Part # LN28CALXU Red LED




If=19.28mA.
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« Reply #815 on: September 21, 2012, 06:45:40 AM »

Panasonic, Part # LN28CALXU Red LED




If=19.28mA, spectrometer's response narrowed to a band between 640nm and 670nm to pinpoint peak wavelength of 660.007nm.
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« Reply #816 on: September 26, 2012, 07:01:06 AM »

Everlight, Part # HIR333C/NO NIR (830nm) LED


The camera interprets the NIR wavelength as a shade of purple; the light itself is essentially invisible unless you look directly down the "business-end" of the LED itself -- if this is done, a dull, deep cherry red color may be seen.

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« Reply #817 on: September 26, 2012, 07:01:41 AM »

Everlight, Part # HIR333C/NO NIR (830nm) LED


The camera interprets the NIR wavelength as a shade of purple; the light itself is essentially invisible unless you look directly down the "business-end" of the LED itself -- if this is done, a dull, deep cherry red color may be seen.


Spectrometer's response narrowed to a band between 800nm and 810nm to pinpoint peak wavelength of 807.332nm.
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« Reply #818 on: January 14, 2013, 09:28:35 AM »

GE # SSL-1 Yellow SiC LED




Newest (01-13-13) spectrometer software settings used.
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« Reply #819 on: January 14, 2013, 09:28:56 AM »

GE # SSL-1 Yellow SiC LED




Spectrometer's response was narrowed to a band between 550nm to 580nm to pinpoint peak emission wavelength, which is 566.789nm.
Newest (01-13-13) spectrometer software settings used.
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