Definition of spectrograph

ON DEMAND: Learn how to enhance uptime and quality control with next-gen vision sensors at Photonics Media's Summit!

Suppliers Products Categories Handbook Dictionary Careers
Resources Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help
Subscribe Advertise

Suppliers Products Categories Handbook Dictionary Careers

Resources

Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help

Excelitas Technologies Corp. - X-Cite Vitae LB 11/24

Photonics Dictionary

spectrograph

An optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a prism or a diffraction grating. A concave grating requires no other means to form a sharp image of the slit on the film, but a plane grating or a prism requires auxiliary lenses or concave mirrors to act as image-forming means in addition to the dispersing element. Refracting prisms can be used only in parallel light, so a collimating lens is required before the prism and an imaging lens after it. Some special-purpose spectrographs are equipped with tiny photodetectors situated in the spectrum at the positions corresponding to the lines of elements whose presence is to be determined.

Popular Articles

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Photonics Spectra Now
Videos
Our Summits & Conferences
Industry Events
Bookstore

Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps

About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)

Requesting information about:

* First Name:

* Last Name:

* Email Address:

* Company:

* Country:

Message:

When you click "Send Request", we will record and send your personal contact information to the supplier by email so they may respond directly. You also agree that Photonics Media may contact you with information related to this inquiry, and that you have read and accept our Privacy Policy and Terms and Conditions of Use.

* Required

We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.