Invention Grant
US09274323B1 Hypercentric lens assembly with high numeric aperture aspheric element
有权
具有高数值孔径非球面元件的超中心透镜组件
- Patent Title: Hypercentric lens assembly with high numeric aperture aspheric element
- Patent Title (中): 具有高数值孔径非球面元件的超中心透镜组件
-
Application No.: US14551662Application Date: 2014-11-24
-
Publication No.: US09274323B1Publication Date: 2016-03-01
- Inventor: Spencer D. Luster
- Applicant: Spencer D. Luster
- Applicant Address: US OH Toledo
- Assignee: Spencer D. Luster
- Current Assignee: Spencer D. Luster
- Current Assignee Address: US OH Toledo
- Agent Donald K Wedding
- Main IPC: G02B3/02
- IPC: G02B3/02 ; G02B13/18

Abstract:
An imaging hypercentric lens assembly comprising of a First Lens Group that includes: 1) At least a first high NA (0.40 or greater) aspheric lens element followed by 2) at least a second lens element that converges the light emitted from the first element to a small spot. It is further comprised of a Second Lens Group whose entrance pupil is placed at the same position as said small light spot. The Second Lens Group serves to refocus the light and form an image of an object placed in front of the First Lens Group. In this combination, the present invention allows high NA aspheric lens elements to produce good quality images of objects whose size is not limited to being considerably smaller than the diameter of the clear aperture of the high NA aspheric lens element.
Information query
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B3/00 | 简单或复合透镜 |
G02B3/02 | .具有非球面的(G02B3/10优先) |