Optical lens, optical module having the same, and backlight...

Details Optical lens, optical module having the same, and backlight... Optical lens, optical module having the same, and backlight...

2005-08-03

2008-10-28

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C362S326000, C362S335000

Reexamination Certificate

active

07443609

ABSTRACT:
An optical module includes a point light source device and an optical lens. The point light source device generates light. The optical lens includes an inner curved surface and an outer curved surface. The inner curved surface has a first roughly ellipsoidal shape having a first major axis and a first minor axis that is substantially perpendicular to the first major axis. The outer curved surface has a second roughly ellipsoidal shape having a second major axis that is substantially perpendicular to the first axis and the second minor axis that is substantially perpendicular to the second major axis. The light generated by the point light source device enters the optical lens through the inner curved surface and exits from the optical lens through the outer curved surface. Therefore, the number of optical modules used in a display device may be reduced to lower manufacturing cost thereof.

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