Integrating Sphere for the Measurement of Reflectance with the Beckman Model DR Recording Spectrophotometer

John A. Jacquez; Wayne McKeehan; John Huss; James M. Dimitroff; Hans F. Kuppenheim

doi:10.1364/JOSA.45.000971

Journal of the Optical Society of America
Vol. 45,
Issue 11,
pp. 971-975
(1955)
•https://doi.org/10.1364/JOSA.45.000971

Integrating Sphere for the Measurement of Reflectance with the Beckman Model DR Recording Spectrophotometer

John A. Jacquez, Wayne McKeehan, John Huss, James M. Dimitroff, and Hans F. Kuppenheim

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John A. Jacquez, Wayne McKeehan, John Huss, James M. Dimitroff, and Hans F. Kuppenheim, "Integrating Sphere for the Measurement of Reflectance with the Beckman Model DR Recording Spectrophotometer," J. Opt. Soc. Am. 45, 971-975 (1955)

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Abstract

The design and performance of a comparison type integrating sphere for the Beckman Model DR recording spectrophotometer is described. This instrument allows the measurement of total reflectance with an accuracy of about 1%.

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$\frac{λ}{m μ}$	$\frac{r_{MgCO 3}}{r_{MgO}}$	95% confidence limits for mean
700	0.994	0.002
650	0.994	0.002
600	0.995	0.002
550	0.995	0.002
500	0.994	0.002
480	0.992	0.002
460	0.989	0.002
440	0.986	0.007
420	0.983	0.002
400	0.978	0.002
390	0.974	0.002
380	0.968	0.004
370	0.955	0.005
360	0.940	0.004
350	0.915	0.004
340	0.887	0.004
330	0.861	0.004
320	0.835	0.005
310	0.829	0.005
300	0.824	0.005
290	0.819	0.005
280	0.812	0.005
270	0.802	0.005
260	0.793	0.005
250	0.781	0.005
240	0.796	0.008
235	0.817	0.012

$\frac{λ}{m μ}$	$\frac{Slit}{mm}$	$\frac{Half-band width}{m μ}$
700	0.34	19.6
678	0.24	13.0
634	0.145	7.4
620	0.120	6.0
580	0.062	3.2
550	0.054	2.6
490	0.060	2.0
450	0.071	1.8
420	0.111	1.9
380	0.180	1.9
355	0.305	2.4
305	0.85	3.4
277	1.05	3.0
252	1.30	2.6
238	1.75	2.9

$\frac{λ}{m μ}$	Beckman	GE	B-GE
Blue card (mat surface)
440	0.582	0.567	0.015
460	0.609	0.590	0.019
500	0.605	0.590	0.015
520	0.578	0.558	0.020
560	0.479	0.463	0.016
600	0.381	0.360	0.021
680	0.325	0.310	0.015
Glossy red surface
500	0.064	0.060	0.004
520	0.062	0.060	0.002
560	0.069	0.067	0.002
600	0.330	0.328	0.005
650	0.734	0.727	0.007
680	0.740	0.737	0.003
Human skin
460	0.262	0.252	0.010
500	0.318	0.295	0.023
540	0.290	0.265	0.025
580	0.309	0.280	0.029
620	0.510	0.499	0.011

$\frac{λ}{m μ}$	Stray energy r_b/rMgO^a
700	0.005
650	0.006
600	0.008
550	0.007
500	0.008
450	0.008
400	0.008
360	0.010
320	0.012
280	0.014
260	0.015
235	0.016

$\frac{λ}{m μ}$	$\frac{r_{MgCO 3}}{r_{MgO}}$	95% confidence limits for mean
700	0.994	0.002
650	0.994	0.002
600	0.995	0.002
550	0.995	0.002
500	0.994	0.002
480	0.992	0.002
460	0.989	0.002
440	0.986	0.007
420	0.983	0.002
400	0.978	0.002
390	0.974	0.002
380	0.968	0.004
370	0.955	0.005
360	0.940	0.004
350	0.915	0.004
340	0.887	0.004
330	0.861	0.004
320	0.835	0.005
310	0.829	0.005
300	0.824	0.005
290	0.819	0.005
280	0.812	0.005
270	0.802	0.005
260	0.793	0.005
250	0.781	0.005
240	0.796	0.008
235	0.817	0.012

Abstract

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Tables (4)

Journal of the Optical Society of America