Headlight optical axis aiming measuring apparatus and method

Details Headlight optical axis aiming measuring apparatus and method Headlight optical axis aiming measuring apparatus and method

1986-01-13

1988-03-15

Rosenberger, R. A.

Optics: measuring and testing

Lamp beam direction or pattern

33335, 33613, G01J 100

Patent

active

047309237

ABSTRACT:
An inventive headlight optical axis aiming measuring apparatus and method is disclosed. The apparatus includes a head measuring horizontal and vertical inclinations of a front lens surface (34) of a headlight (12) installed in a vehicle (2) and including a plurality of contact-type displacement sensors (48, 49, 50, 51), each of which is associated with a device (28, 29, 30) in contact with the front lens surface (34) and moving in accordance with the inclinations of the front lens surface (34), a support (15) for the displacement sensors (48, 49, 50, 51), and device for checking the headlight optical axis aiming in accordance with a fixed relationship between inclinations of a headlight optical axis and the front lens surface (34) by means of outputs of the measuring head (9). In accordance with this invention, the headlight need ot come on and a large space is not required for projecting the headlight beam onto a screen.

REFERENCES:
patent: 2913825 (1969-11-01), MacMillan
patent: 3841759 (1974-10-01), Turner
patent: 4063365 (1977-12-01), Hopkins et al.

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