Component Supplier

Member Since 2017

LEARN MORE

LASER COMPONENTS USA specializes in sales, distribution and marketing of components in the laser and optoelectronics industry. We have been serving customers over 15 years in North America with products from our manufacturing sites in Germany, Canada and the US, as well as from well-selected international suppliers. Our strength lies in the ability to offer FLEXPOINT® laser modules (at different wavelengths and power) and colorPol® dichroic glass polarizers (for the UV, VIS, and IR range) as single pieces or series production. Applications include alignment, positioning, and measurement.

Content Filed Under:

Industry:
Food & Beverage Food & Beverage

Application:
N/A

Laser Optics Keep Fruit and Vegetables Fresh

POSTED 03/21/2018

DOEs in the Food IndustryDOEs in the Food Industry

Bedford, NH: Diffractive optical elements (DOEs) allow laser beams to be split, bundled, or formed into almost any shape and are used in multiple applications. The food industry, for instance, uses them for laser perforation, when it comes to applying micro holes into packaging for fruit or vegetables. These allow the food to “breathe” and thus extend its storage life. The holes have diameters of between 50 μm and 300 μm depending on the type of food and material.

Only lasers can achieve the required consistency of perforation at these sizes. Using multispot DOEs for this application, the required number of identical laser beams can be generated with one single optical element. Almost the entire energy of the original beam is preserved.

Modified Atmosphere Packaging (MAP) is used to prolong the storage time of fresh food. Instead of air, the packaging contains one or several gases – mostly nitrogen or carbon dioxide. While oxygen is considered undesirable for most other groceries, fruit and vegetables need it for respiration. Micro-holes allow for the necessary exchange of gases, but keep the protective atmosphere inside the packaging.