Reflection controllable view mirror device for motor vehicle or the like

[54] REFLECTION CONTROLLABLE VIEW

MIRROR DEVICE FOR MOTOR VEHICLE
OR THE LIKE

[75] Inventors: Shigeru Kato; Junichi Nakaho;

Makoto Shibahara, all of Aichi,
Japan

[73] Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, Japan

[21] Appl. No.: 534,604

[22] Filed: Sep. 22, 1983

[30] Foreign Application Priority Data

Sep. 29, 1982 [JP] Japan 57-147510[U]

Sep. 30, 1982 [JP] Japan 57-149940[U]

Apr. 30, 1983 [JP] Japan 58-66626[U]

Apr. 30, 1983 [JP] Japan 58-66625[U]

May 18, 1983 [JP] Japan 58-74960[U]

[51] Int. CI.* G02F 1/13; G02B 5/08

[52] U.S. CI 350/331 R; 350/355;

350/279; 350/338

[58] Field of Search 350/331 R, 338, 279,

350/278, 283, 355

[56] References Cited

U.S. PATENT DOCUMENTS

3,862,798 1/1975 Hopkins 350/278

FOREIGN PATENT DOCUMENTS

2808260 8/1979 Fed. Rep. of Germany 350/278

2029343 3/1980 United Kingdom 350/279

Primary Examiner—John K. Corbin

Assistant Examiner—B. S. Shapiro

Attorney, Agent, or Firm—Steele, Gould & Fried

[57] ABSTRACT

A reflection controllable view mirror device having an electro-optical assembly which changes its optical transmittance to vary quantity of light passing therethrough in accordance with the magnitude of the applied voltage, a control circuit to control the transmittance at a value so as to ensure predetermined uniform reflection under circumstances permitting transmittance to deviate from inherent one because of deterioration or the like. Another control circuit is provided to control to ensure the inherent transmittance for predetermined reflection under the same circumstances.

5 Claims, 26 Drawing Figures