Investigation of Screens as Spectrophotometric Absorption Standards

J. M. Vandenbelt

doi:10.1364/JOSA.52.000284

Journal of the Optical Society of America
Vol. 52,
Issue 3,
pp. 284-287
(1962)
•https://doi.org/10.1364/JOSA.52.000284

Investigation of Screens as Spectrophotometric Absorption Standards

J. M. Vandenbelt

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J. M. Vandenbelt, "Investigation of Screens as Spectrophotometric Absorption Standards," J. Opt. Soc. Am. 52, 284-287 (1962)

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Abstract

Perforated and mesh screens were examined for suitability as spectrophotometric absorption standards. Screens give consistent readings with large-beam spectrophotometers, but they are sensitive to handling, and they lack adequate range. The absorbance decreases at shorter wavelength. For general use, they are inferior to appropriate glass-filter standards.

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Inst. ser. no.	λ mμ (uv)					λ mμ (Vis)

	220	250	300	350	400	400	500	600	750
25	0.756	0.759	0.760	0.759	0.760	0.759	0.761	0.764	0.766
67	0.762	0.760	0.762	0.761	0.765	0.772	0.778	0.780	0.776
82	0.760	0.763	0.764	0.762	0.758	0.764	0.767	0.770	0.764
113	0.763	0.764	0.764	0.764	0.765	0.767	0.772	0.772	0.775
142	0.766	0.763	0.762	0.762	0.763	0.762	0.767	0.770	0.770
144	0.757	0.759	0.759	0.760	0.763	0.767	0.770	0.770	0.763
158	0.758	0.757	0.763	0.762	0.763	⋯	⋯	⋯	⋯
168	0.753	0.754	0.759	0.756	0.760	0.761	0.753	0.755	0.764
172	0.750	0.751	0.754	0.751	0.747	0.750	0.742	0.742	0.763

216	0.760	0.758	0.757	0.760	0.764	0.766	0.786	0.789	0.770
Mean	0.758	0.759	0.760	0.760	0.761	0.763	0.766	0.768	0.768
Median	0.759	0.759	0.761	0.760	0.763	0.764	0.767	0.770	0.766
θ	0.005	0.004	0.003	0.004	0.005	0.006	0.012	0.013	0.005
V^A	0.6	0.5	0.4	0.5	0.6	0.8	1.6	1.7	0.6

Inst. Ser. no.	λ mμ (uv)					λ mμ (Vis)				λ μ (near infrared)

	220	250	300	350	400	400	500	600	750	0.60	0.75	1.0	1.5	2.0	2.5
54	0.754	0.752	0.754	0.754	0.757	0.763	0.765	0.764	0.771	0.762	0.771	0.773	0.779	0.784	0.789
60	0.761	0.762	0.766	0.761	0.763	0.762	0.765	0.769	0.772	0.753	0.755	0.756	0.766	0.774	0.781
62	0.755	0.756	0.758	0.760	0.759	⋯	⋯	⋯	⋯	0.757	0.762	0.765	0.771	0.777	0.780
89	0.758	0.758	0.759	0.760	0.760	0.758	0.760	0.758	0.760	0.759	0.761	0.765	0.772	0.781	0.787
127	0.752	0.753	0.755	0.755	0.760	0.760	0.760	0.757	0.762	0.761	0.762	0.766	0.773	0.781	0.790
161	0.759	0.758	0.758	0.758	0.760	0.759	0.759	0.758	0.763	0.760	0.761	0.765	0.776	0.780	0.784

Mean	0.756	0.756	0.758	0.758	0.760	0.760	0.762	0.761	0.766	0.759	0.762	0.765	0.773	0.780	0.785
Median	0.756	0.757	0.758	0.759	0.760	0.760	0.760	0.758	0.763	0.760	0.762	0.765	0.772	0.780	0.786
θ	0.003	0.003	0.004	0.003	0.002	0.002	0.003	0.005	0.005	0.003	0.005	0.005	0.004	0.003	0.004
V^A	0.4	0.4	0.5	0.4	0.2	0.2	0.4	0.6	0.6	0.4	0.6	0.6	0.5	0.4	0.5

Run no.	λ mμ (uv)					λ mμ (Vis)

	220	250	300	350	400	350	400	500	600	750
1	0.765	0.763	0.762	0.763	0.768	0.767	0.767	0.768	0.770	0.773
2	0.759	0.761	0.760	0.760	0.761	0.762	0.762	0.764	0.766	0.770
3	0.765	0.765	0.760	0.759	0.759	0.768	0.768	0.772	0.773	0.776
4	0.760	0.762	0.761	0.760	0.763	0.764	0.764	0.766	0.768	0.769
5	0.760	0.759	0.759	0.762	0.761	0.762	0.763	0.764	0.765	0.770
6	0.764	0.766	0.764	0.764	0.765	0.770	0.770	0.773	0.774	0.776
7	0.766	0.767	0.766	0.765	0.767	0.764	0.764	0.766	0.769	0.770
8	0.765	0.766	0.765	0.765	0.765	0.769	0.771	0.773	0.773	0.777
9	0.764	0.765	0.765	0.764	0.764	0.767	0.769	0.775	0.776	0.775
10	0.764	0.765	0.765	0.767	0.767	0.768	0.771	0.775	0.777	0.774

Mean	0.763	0.764	0.763	0.763	0.764	0.766	0.767	0.770	0.771	0.773
Median	0.764	0.765	0.763	0.764	0.764	0.767	0.768	0.770	0.772	0.774
θ	0.002	0.002	0.002	0.003	0.003	0.003	0.003	0.004	0.004	0.003
V^A	0.3	0.3	0.3	0.3	0.4	0.4	0.4	0.6	0.5	0.4

	λ mμ (uv)					λ mμ (Vis)

Screens	220	250	300	350	400	350	400	500	600	750
60-mesh	0.504	0.505	0.504	0.505	0.507	0.508	0.509	0.511	0.514	0.520
60-mesh+No. 50P	1.273	1.274	1.277	1.278	1.280	1.280	1.283	1.287	1.291	1.293
Filter No. 7905	0.424	0.335	0.147	⋯	⋯	⋯	⋯	⋯	⋯	⋯
Filter No. 3307	⋯	⋯	⋯	1.210^a	⋯	1.212^a	1.842^b	0.751	0.152	0.146
Filter+No. 50P	1.196	1.103	0.917	1.973^a	⋯	1.982^a	2.615^b	1.524	0.931	0.925

Inst. ser. no.	λ mμ (uv)					λ mμ (Vis)

	220	250	300	350	400	400	500	600	750
25	0.756	0.759	0.760	0.759	0.760	0.759	0.761	0.764	0.766
67	0.762	0.760	0.762	0.761	0.765	0.772	0.778	0.780	0.776
82	0.760	0.763	0.764	0.762	0.758	0.764	0.767	0.770	0.764
113	0.763	0.764	0.764	0.764	0.765	0.767	0.772	0.772	0.775
142	0.766	0.763	0.762	0.762	0.763	0.762	0.767	0.770	0.770
144	0.757	0.759	0.759	0.760	0.763	0.767	0.770	0.770	0.763
158	0.758	0.757	0.763	0.762	0.763	⋯	⋯	⋯	⋯
168	0.753	0.754	0.759	0.756	0.760	0.761	0.753	0.755	0.764
172	0.750	0.751	0.754	0.751	0.747	0.750	0.742	0.742	0.763

216	0.760	0.758	0.757	0.760	0.764	0.766	0.786	0.789	0.770
Mean	0.758	0.759	0.760	0.760	0.761	0.763	0.766	0.768	0.768
Median	0.759	0.759	0.761	0.760	0.763	0.764	0.767	0.770	0.766
θ	0.005	0.004	0.003	0.004	0.005	0.006	0.012	0.013	0.005
V^A	0.6	0.5	0.4	0.5	0.6	0.8	1.6	1.7	0.6

Abstract

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Tables (4)

Journal of the Optical Society of America