Title:
OPTICAL FILTER DEVICE FOR CAMERA
Document Type and Number:
Japanese Patent JPH05273514
Kind Code:
A
Abstract:
PURPOSE:To provide an optical filter device for a camera by which a special video effect is freely directed without necessitating the exchange of an optical accessory and interrupting photographing in a standard loading state in the case of directing the special video effect. CONSTITUTION:This device is provided with an optical filter main body 3 attached in a barrel 1 for attachment which is attached to the front surface of an optical lens main body 16 and having ferroelectric liquid crystal element structure and an electrode terminal 15 for impressing bias on the ferroelectric liquid crystal element. A through hole is formed in the center of the optical axis of the filter main body 3 to obtain a doughnut shape.
More Like This:
| JP4873205 | Polymerizable liquid crystal composition and optical element |
| JP3492591 | DISPLAY DEVICE AND INFORMATION TERMINAL APPARATUS |
| WO/2019/008851 | DISPLAY DEVICE |
Inventors:
Toyohiro Tsunakawa
Application Number:
JP9894392A
Publication Date:
October 22, 1993
Filing Date:
March 25, 1992
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G02F1/13; G03B11/00; (IPC1-7): G02F1/13; G03B11/00
Attorney, Agent or Firm:
Takahisa Sato