Laser marker
US8896899B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 15, 2013 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Aug 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser marker/pointer for projecting circular or elliptical laser beam patterns onto a target surface such as a portion of a presentation screen or to assist in the aiming of a firearm, comprises a handheld shell body in which is mounted a laser light source, a rotating optical mirror driven by a motor, and an electronic drive circuit, whereby the aspect ratio of the marking pattern is determined by the geometric relationship of the motor shaft axis, the laser beam, and the mirror surface. The motor drive circuit when initially powered (along with the laser diode), applies full power (a continuous DC voltage to the motor to overcome inertia), followed by a pulsed voltage to lower the duty cycle of the motor, increase battery life, and reduce rotational noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.