The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1978
Filed:
Oct. 28, 1976
Yoshihisa Maitani, Hachioji, JA;
Osamu Kawarada, Fuchu, JA;
Olympus Optical Co., Ltd., Tokyo, JA;
Abstract
A data display for use in a strobo unit which includes a manual controlling device for manually controlling the illumination, an automatic controlling device for controlling the illumination by means of a light receiving element which serves as means for determining an external light, and a TTL controlling device for controlling the illumination by means of a second light receiving element disposed within the camera for determining reflected light from a shutter blade or a film surface. The data display comprises a first stationary display panel carrying a diaphragm aperture dial and a guide number dial for use in a manual control mode, a diaphragm aperture dial and a range dial for use in an automatic control mode, and a plurality of indicia for selection of the manual, automatic and TTL controlling devices, all disposed in interrelated and concentric relationship. The data display also comprises a second stationary display panel disposed in concentric relationship with the first stationary display panel and carrying a dial thereon which indicates the distance to which a photographing operation is possible during the TTL control mode. Additionally, the data display also comprises a first mask plate which is disposed in concentric relationship with the first stationary display panel and rotatable relative thereto, a second mask plate which is rotatable relative to the first mask plate, but rotates integrally with the latter as it rotates, and a third mask plate which is disposed for integral rotation with the first mask plate.