Single lens element, light source device and scanning...

Details Single lens element, light source device and scanning... Single lens element, light source device and scanning...

2007-08-14

2007-08-14

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

C359S563000, C359S566000, C359S737000

Reexamination Certificate

active

10571294

ABSTRACT:
A single lens element used for converting a divergent pencil of rays, radiated from a light source, into a predetermined convergent state, whereinthe single lens element is made from a resin and has a positive optical power due to a refraction effect and a positive optical power due to a diffraction effect,the diffraction effect is based on a diffraction structure formed on at least one of an incident side surface and an exit side surface of the single lens element, andthe following expressions are satisfied:in-line-formulae description="In-line Formulae" end="lead"?0.1<NA<0.3in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.4<T/f<0.75in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?2.2<fr/f<3in-line-formulae description="In-line Formulae" end="tail"?here,f is a focal length of the entire single lens element,fr is a focal length due to the refraction effect of the single lens element,T is a thickness of the single lens element on an optical axis, andNA is a numerical aperture of a single lens element at an incident side.

REFERENCES:
patent: 5212501 (1993-05-01), Nakamura et al.
patent: 6094286 (2000-07-01), Kato
patent: 6101020 (2000-08-01), Ori
patent: 62-141511 (1987-06-01), None
patent: 4-328512 (1992-11-01), None
patent: 4-328516 (1992-11-01), None
patent: 6-118346 (1994-04-01), None
patent: 11-274646 (1999-10-01), None
patent: 2000-171741 (2000-06-01), None
patent: 10-68903 (2000-07-01), None
patent: 2001-159731 (2001-06-01), None
patent: 2004-126192 (2004-04-01), None

Affiliated with

Also associated with

Rating

Single lens element, light source device and scanning... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single lens element, light source device and scanning..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single lens element, light source device and scanning... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3875411