Optical: systems and elements – Compound lens system – With relay
Patent
1994-10-27
1997-12-23
Nguyen, Thong
Optical: systems and elements
Compound lens system
With relay
359362, 359434, G02B 2300
Patent
active
057012008
ABSTRACT:
A monolithic relay lens system for an endoscope is provided and includes a plurality of alternating individual polymeric lens elements bonded together with optical cement lenses of predetermined optical properties. In particular, multiple biconcave lenses of a first polymeric material are bonded to and alternated with multiple biconcave lenses of a second polymeric material by biconvex optical cement material lenses, in order to provide a monolithic and cylindrical achromatic optical structure. The polymeric lens elements of the system can be mass produced using injection molding. Low temperature polymeric material combinations, such as polystyrene and acrylic, are most easily injection molded and may, together with the optical cement, be used to manufacture disposable and very inexpensive relay lens systems. On the other hand, where a temperature resistant, autoclavable endoscope is preferred, high temperature polymeric lens combinations, such as polycarbonate and TPX can be used. The biconvex optical cement (VTC2) lenses are shaped by the concave surfaces of the first and second polymeric material lens elements.
REFERENCES:
patent: 3257907 (1966-06-01), Hopkins
patent: 4168882 (1979-09-01), Hopkins
patent: 4403837 (1983-09-01), Nakahashi
patent: 4432832 (1984-02-01), Fantone
patent: 4575195 (1986-03-01), Hoogland
patent: 4662725 (1987-05-01), Nisioka
patent: 4664486 (1987-05-01), Landre et al.
patent: 4674844 (1987-06-01), Nishioka et al.
patent: 4693568 (1987-09-01), Takahashi
patent: 4721372 (1988-01-01), Yokota
patent: 4723843 (1988-02-01), Zobel
patent: 4784118 (1988-11-01), Fantone et al.
patent: 4964710 (1990-10-01), Leiner
patent: 5097359 (1992-03-01), McKinley
patent: 5188092 (1993-02-01), White
patent: 5296971 (1994-03-01), Mori
patent: 5321457 (1994-06-01), Imaizumi
patent: 5327283 (1994-07-01), Zobel
patent: 5341240 (1994-08-01), Broome
patent: 5359377 (1994-10-01), Kamo
patent: 5359453 (1994-10-01), Ning
patent: 5359456 (1994-10-01), Kikuchi
Gordon David P.
Nguyen Thong
Symbiosis Corporation
LandOfFree
Monolithic relay lens system particularly suited for use in an e does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monolithic relay lens system particularly suited for use in an e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monolithic relay lens system particularly suited for use in an e will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1805397