Lensing duct

Patent · Tue Apr 26 00:00:00 EDT 1994

OSTI ID:5074743

Beach, R J; Benett, W J

A lensing duct to condense (intensify) light using a combination of front surface lensing and reflective waveguiding is described. The duct tapers down from a wide input side to a narrow output side, with the input side being lens-shaped and coated with an antireflective coating for more efficient transmission into the duct. The four side surfaces are uncoated, preventing light from escaping by total internal reflection as it travels along the duct (reflective waveguiding). The duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials, and can be fabricated from inexpensive glass and plastic. 3 figures.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5307430; A
• Application Number: PPN: US 7-983350
• OSTI ID: 5074743
• Resource Relation: Patent File Date: 30 Nov 1992
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
OPTICAL SYSTEMS
DESIGN
SOLID STATE LASERS
OPTICAL PUMPING
LASER RADIATION
LENSES
LIGHT TRANSMISSION
USES
WAVEGUIDES
ELECTROMAGNETIC RADIATION
LASERS
PUMPING
RADIATIONS
426002* - Engineering- Lasers & Masers- (1990-)