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AssigneeChuo Electronic Measurement Co., Ltd.
InventorsToshiyuki Kaya, Osamu Takao, Nobuo Matsushita
Estimating the term…
In the apparatus for measuring optical-axis deflection angle of a headlight, according to the present invention, the optical-axis detecting means (3) detects the optical axis (l") of the light projected at the first location (E.sub.1) from the headlight (7), and the screen box moving mechanism (2) moves until the position of the optical axis (l") coincides with the center of the screen (9). Then, the screen box is stopped there. Next, the screen moving mechanism (10) is put into operation to move the screen (9) from the first location (E.sub.1) to the second location (E.sub.2), the optical-axis detecting means (3) detects the optical axis (l") from the light projected onto the screen (9), and the controlling means (6) makes a predetermined calculation from the information on the optical-axis position, thereby calculating a deflection angle (.alpha..sub.1, .alpha..sub.2) of the optical axis.
An apparatus for measuring the deflection angle of the optical axis of a light beam projected from the headlight of a car under inspection, comprising:
An apparatus for measuring the deflection angle of optical axis of a light beam projected from the headlight of a car under inspection, comprising:
Dependencies are inferred from the claim text.