Study of focusing aid techniques

PDF Version Also Available for Download.

Description

The study of focusing aid techniques was conducted to evaluate the performance and convenience of the split image, projection, and ground glass techniques used for focusing oscilloscope cameras. Specifically, the study was intended (1) to determine the usefulness of projection-type focusing aid devices now used on EG&G Type 3171 cameras, (2) to lead to recommendations for the most satisfactory device for use with the new LC-4 type camera, and (3) to evaluate the usefulness of such devices for production-line focusing of EG&G Type 850 cameras. The study included a brief theoretical evaluation of each focusing method and a statistical determination ... continued below

Physical Description

31 p.

Creation Information

Champeny, J. C. & Zavattaro, P. H. March 4, 1966.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The study of focusing aid techniques was conducted to evaluate the performance and convenience of the split image, projection, and ground glass techniques used for focusing oscilloscope cameras. Specifically, the study was intended (1) to determine the usefulness of projection-type focusing aid devices now used on EG&G Type 3171 cameras, (2) to lead to recommendations for the most satisfactory device for use with the new LC-4 type camera, and (3) to evaluate the usefulness of such devices for production-line focusing of EG&G Type 850 cameras. The study included a brief theoretical evaluation of each focusing method and a statistical determination of actual performance. The primary tests were made using a simulated oscilloscope trace to insure reproducibility. Comparisons of the results were made on a Tektronix oscilloscope to confirm validity of the trace simulation. Most of the tests were made with an LC-4 camera because the Nikon lens used in the LC-4 camera will be used in future 3171 cameras. A few experiments were conducted to confirm the correctness of applying the LC-4 camera results to unmodified 3171 cameras. A special split image focusing aid developed at Lawrence Radiation Laboratory (LRL) for the LC-4 camera was used in the split image technique, and a type of focusing aid now commonly used with 3171 cameras was used in the projection technique. The ground glass technique was based on a method commonly used in optical work for critical focusing. Data were accumulated for each focusing technique, for different operators, and under different conditions so that reasonable statistical validity could be obtained.

Physical Description

31 p.

Notes

OSTI as DE94015929; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

Source

  • Other Information: PBD: 4 Mar 1966

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE94015929
  • Report No.: EGG--1183-281
  • Report No.: EGG-B--3258
  • Grant Number: AC08-76NV01183
  • DOI: 10.2172/10170457 | External Link
  • Office of Scientific & Technical Information Report Number: 10170457
  • Archival Resource Key: ark:/67531/metadc1340918

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • March 4, 1966

Added to The UNT Digital Library

  • Nov. 28, 2018, 2:33 p.m.

Usage Statistics

When was this report last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Champeny, J. C. & Zavattaro, P. H. Study of focusing aid techniques, report, March 4, 1966; United States. (digital.library.unt.edu/ark:/67531/metadc1340918/: accessed January 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.