Optical device

Details Optical device Optical device

1996-08-19

1998-07-14

Moskowitz, Nelson

Optical: systems and elements

Lens

Selective magnification by exchanging or adding a lens...

385 31, 385 33, 385 48, 385 50, 359194, G02B 626, G02B 632

Patent

active

057813477

ABSTRACT:
An optical device including a lens located between a first port and a second port, and a photodetector having a photodetecting surface located in the vicinity of the second port. The first port and the second port have a first aperture and a second aperture, respectively. The lens has a converging portion for converting a light beam so as to couple the first aperture and the second aperture, and a deflecting portion for deflecting a part of a light beam from the first port to make the part incident on the photodetecting surface. The converging portion and the deflecting portion are integral with each other, for example. By using this optical device, light power can be monitored stably with no polarization dependence.

REFERENCES:
patent: 4997250 (1991-03-01), Ortiz
patent: 5402509 (1995-03-01), Fukushima
patent: 5513289 (1996-04-01), Hosokawa et al.
patent: 5555330 (1996-09-01), Pan et al.
patent: 5559911 (1996-09-01), Forkner et al.

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