NDLI: Determination of stray light at the PTB goniophotometer facility

Please wait, while we are loading the content...

Determination of stray light at the PTB goniophotometer facility

Content Provider	Springer Nature Link
Author	Bizjak, G. Lindemann, M. Sperling, A. Sauter, G.
Copyright Year	2009
Abstract	For improved luminous flux measurements, the Physikalisch-Technische Bundesanstalt (PTB) was equipped with a new robotic goniophotometer. In order to characterize this instrument, to reduce the combined measurement uncertainty, and to determine the respective uncertainty components, the influence of stray light on the measurement results was investigated. Considering the specific structure of the robotic goniophotometer, stray light was measured on-line by means of a purpose-built “back-looking” photometer. By this means, the influence of the luminous intensity distribution of each individual light source with regard to its stray light could be considered. Before the first experimental application, the invented procedure was tested by means of calculations using mathematical models. In this paper, the mathematical model for the calculation of stray light in the goniophotometer room is presented together with the calculation results and the results of the first measurements. The achieved results indicate that the recommended stray light measurements can decrease the total relative standard measurement uncertainty of luminous flux measurements down to 2 × 10$^{−3}$.
Starting Page	163
Ending Page	173
Page Count	11
File Format	PDF
ISSN	09703950
Journal	MAPAN
Volume Number	24
Issue Number	3
e-ISSN	09749853
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-12-15
Publisher Institution	Metrology Society of India
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Numerical and Computational Physics Mathematical Methods in Physics Theoretical, Mathematical and Computational Physics Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Photometry and colorimetry of reference LEDs by using a compact goniophotometer

From primary standard to mobile measurements — Overview of the Spectral Irradiance Calibration Equipment at PTB

The PTB primary standard for electrical AC power

Upgradation of a spectral irradiance measurement facility at National Physical Laboratory, India

Bilateral comparison of power measurement standards for KrF excimer lasers between PTB and NIST

Measurement of the nonlinearity of Ge-and InGaAs-photodiodes at high irradiance levels

High-grade uniform light source for radiometric and photometric applications

Micro 3D measurement method using SEM

Preliminary Study for the Establishment of DC Charge Calibration Facility at CSIR-NPL Using Charged Capacitance Source

Determination of stray light at the PTB goniophotometer facility

Similar Documents

Photometry and colorimetry of reference LEDs by using a compact goniophotometer

From primary standard to mobile measurements — Overview of the Spectral Irradiance Calibration Equipment at PTB

The PTB primary standard for electrical AC power

Upgradation of a spectral irradiance measurement facility at National Physical Laboratory, India

Bilateral comparison of power measurement standards for KrF excimer lasers between PTB and NIST

Measurement of the nonlinearity of Ge-and InGaAs-photodiodes at high irradiance levels

High-grade uniform light source for radiometric and photometric applications

Micro 3D measurement method using SEM

Preliminary Study for the Establishment of DC Charge Calibration Facility at CSIR-NPL Using Charged Capacitance Source

Determination of stray light at the PTB goniophotometer facility