| |
|
Inventor: Abe; Haruo
Address: Sakai, JP
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4231636 |
Variable field curvature lens system |
November 4, 1980 |
| An optical lens system is provided having the capability of selectively varying the peripheral field curvature to improve focusing for nonplanar objects and for special photographic effects. The lens system can include in sequence, a first lens group of positive refractive power, a secon |
| 4198126 |
Zoom lens system capable of macrophotography |
April 15, 1980 |
| The present lens system is capable of providing both a zooming operation and also a relatively efficient and economical macrophotography mode of operation. The zoom lens system contains the basic conventional lens groups of a focusing lens group, variator lens group, compensator lens |
|
|
|
