Tubular tee is intersected at its junction by a reflecting/transmitting mirror angled to provide two images of an object for simultaneous photographing from two positions. This method is used when space and focal conditions are limited

Zeldin, S.

English

NASA Technical Reports Server

FebruarN 1966	 Brief 66-10072 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Beam Splitter Used in Dual Filming Technique 
PcfI,'tin,/	 . 
110
 
The problem: 
To simultaneously photograph an event with two 
cameras, where space or focal conditions prevent the 
ordinary mounting and focusing of more than one 
camera. 
The solution: 
A reflecting/ transmitting mirror so arranged that 
two images of the object are available for photograph-
ing from two different positions.
How it's done: 
A tubular tee is intersected at its junction by a 
reflecting/ transmitting mirror mounted at an angle of 
450 with respect to each tee section centerline. The 
longer tubular section sees the object directly through 
the transmitting angle of the mirror, while the shorter 
tubular section sees the image of the object off the 
reflecting angle of the mirror. 
Adak
	 (continued overical) 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000072 2020-03-11T17:34:19+00:00Z
Notes 
I. This device has been used successfully to obtain 
streak and frame studies of combustion in F-I 
thrust chambers. 
2. Where the object requires illumination, one tube 
could be used for a camera while the other is used 
to provide the illumination. 
3. In spectroscopy, this technique could be used 
with two spectrographs to continuously monitor 
different wavelengths.
4. Inquiries concerning this invention may be di-
rected to: 
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama, 35812 
Reference: B66-10072 
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code 
AGP, Washington, D.C., 20546. 
Source: S. Zeldin of North American Aviation, Inc. 
under contract to Marshall Space Flight Center 
(MFS-50 I) 
Brief 66-10072
	
Category 02


Beam splitter used in dual filming technique

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server