Laser scattered light measuring device
AssigneeYamamoto Kogaku Co., Ltd.
InventorsYoshitaka TANI, Kenta NODA
Life of this patent
Estimating the term…
Abstract
Provided is a laser scattered light measuring device capable of easily confirming the safety of laser scattered light to a human body. The laser scattered light measuring device includes a light receiving unit, a calculation unit, and a display unit. The light receiving unit includes a light sensor configured to output to the calculation unit a light intensity signal corresponding to an intensity of received light, and the calculation unit executes a calibration process that corrects the light intensity signal output by the light sensor by using, as a zero point, a light intensity signal obtained when ambient light is received.
Claims7
A laser scattered light measuring device configured to be handheld by a user, the laser scattered light measuring device comprising:
- a light receiving unit configured to receive laser scattered light generated when laser light is irradiated onto an object and to detect an intensity of the laser scattered light;
- a calculation unit configured to compare the intensity of the laser scattered light detected by the light receiving unit with a threshold value corresponding to a maximum permissible exposure specified by an official laser-product safety standard, and to calculate, based on a result of the comparison, a degree of risk of the laser scattered light to a human body;
- a display unit configured to display the degree of risk calculated by the calculation unit;
- and
- a housing configured to accommodate the light receiving unit, the calculation unit, and the display unit, the housing being configured to be gripped with one hand by the user such that a direction faced by the light receiving unit is changeable,
- wherein the light receiving unit includes a light sensor configured to output to the calculation unit a light intensity signal corresponding to an intensity of received light, and
- wherein the calculation unit is configured to execute a calibration process that corrects the light intensity signal output by the light sensor by using, as a zero point, a light intensity signal obtained when ambient light is received.
Dependencies are inferred from the claim text.