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Terms of Use

This notice provides the Optical Constants database (OCdb) policy regarding the nature, purpose, use and sharing of any information collected via this website. The information you provide on a The OCdb website will be used only for its intended purpose. We will protect your information consistent with the principles of the Privacy Act, the e-Government act of 2002, the Federal Records Act, and as applicable, the Freedom of information Act.

Submitting Information

Submitting information is strictly voluntary. By doing so, you are giving The Optical Constants database Team your permission to provide the information to the scientific community and make it available to download or use in OCdbs tools. Data contributors are asked to document their datasets with a minimal set of required information, including contact information. For instructions on how to contribute to the database click here.

The following information will be published on the site:

  • Scientific data files and "metadata"
  • Reference and DOI

Terms and Conditions

The Optical Constants database (OCdb) is a public site that anyone may view or download content from.

Contributors are responsible for ensuring that they have the rights to distribute any data provided to be included on this site and that the data is appropriate to distribute.

Users should not upload any information considered: Classified, Control Unclassified Information (CUI), Copyrighted (without retaining proper copyright notices and without permission where not the owner), ITAR restricted, or Proprietary without permission.

ITAR, Export Controlled, and Proprietary or Copyrighted Information

The Optical Constants database (OCdb) is not for the transfer or storage of proprietary data. Information is considered "proprietary" where such information was developed at private expense and embodies trade secrets or contains commercial or financial information over which the owner intends to control access and use. Users must have explicit written approval from the owner before removing the status of proprietary information and before such information is contributed to the website.

NASA Civil Servants and Contractors are each individually responsible for ensuring all information they contribute has been through the STI Documentation Availability Authorization review process (NF-1676B at NASA Ames, including other proper forms for your center), which includes a review for export-controlled information. Other individual contributors are responsible to ensure that information submitted for contribution to the website complies with export control regulations.

Intellectual Property Policy

OCdb's policy is to respect the intellectual property rights of others so we are asking you to do the same.

As a Contributor, when you submit data entries from a publication for inclusion in OCdb, you do not transfer or assign the copyright to OCdb. Rather, you make the content available to the public while retaining the right to remove such content from OCdb at any time.

When you contribute datasets, we encourage you to first confirm your rights before doing so. As a general matter, if you are an author publishing in a journal, you may be allowed to publish certain versions of your article, but not others, and privately share certain content with others. However, many journals restrict publication of final versions and impose limitations on private sharing.

Your starting point for understanding your rights is the agreement(s) you have with your publisher or other rights owner. If you're still unsure about what you're allowed to share on OCdb, we recommend that you contact your publisher. There are other resources available that you might also find useful in understanding your rights, such as How Can I Share It (

Please be aware that if we receive notice of an alleged violation of copyright or intellectual property rights we will remove the content complained.


For data available from this server, the U.S. Government does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed.

Data Redistribution

Data acquired through the OCdb Data Repository website are distributed under NASA's Open Access Data Policy at White House - Open Government Plan.

Citing Data Sets Provided in OCdb

To acknowledge the scientists who have provided data, we request that you include a bibliographic citation to all OCdb-provided data that you use in your publications. Such citations will help others find the products and see how they have been used. Citation information is provided below.

  • Acknowledgement:

    A general statement crediting OCdb for data retrieval. This statement is included in a paragraph at the end of an article, before the reference list.

    Example Acknowledgment for data:

    "Optical constants data were retrieved from the Optical Constants database"

  • Reference Citation:

  • Please cite the reference associated with the dataset you are using. This reference is provided at the bottom left of the dataset landing page.