eo_logo
 
Product added to cart

Yellow Monochromatic Lamp

×

When using optical flats to assess the flatness of processed components, the field of view must be illuminated with monochromatic light. Monochromatic light sources are very effective for viewing Brewster's fringes and Newton's rings. This monochromatic lamp uses a standard commercial 35W low pressure sodium SOX lamp which gives very economic running costs and a long operating life. The effective monochromatic wavelength is 589.6nm, so λ/2 is approximately 0.3 microns.

Products

 Title   Compare   Stock Number   Price  Buy
589.6nm Monochromatic Lamp
Replacement 35W Bulb

Product Details

In front of the bulb is an opalescent diffusing screen with a straight line engraved across its face. By suitable adjustment of the flat, work and eye position, the reflection of the engraved line provides a straightness reference with which the bands can be compared.