KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP (Seoul, KR)

The invention relates to a laser apparatus that induces the photo-mechanical effect. More particularly, the present invention relates to a laser apparatus for outputting an unidirectional laser beam and producing a photomechanical effect through controlling the pulse energy of the pulsed laser beam.

1. Technical Field

The invention is about a laser apparatus that can control a photomechanical effect and a method using it. Particularly the laser device can create the photomechanical effect by with a laser beam that is pulsed and controlling the energy of the pulse to produce the effect.

2. Description of the Related Art

Laser apparatus is an apparatus that emits light using light amplification by stimulated emission of radiation.

Lasers can emit `artificial light having a uniform direction, phase, and wavelengthwhich is distinct from natural light. the laser apparatus is employed in numerous fields of business based on such a characteristic. More particularly, thelaser apparatus is employed in a variety of industries that encompass one) an optical communication field utilizing optical properties, 2) medical fields like disease monitoring, low-level laser therapy, and photodynamic therapy.) a nanotechnologyfield that is used to break chemical bonds, and four) a precision machining field that includes diamond processing.

The laser can be used only for optical effects, or for photo-chemical and photo-thermal effects that are generated within a temperature range of 80.degree. C. or greater.

Accordingly, there is no study of a laser device capable of producing a photo-mechanical effect.

The invention in question aims to create a photomechanical effect by using a laser apparatus.

The invention also provides an electrical stimulation of the human body by using a laser apparatus.

Another objective of the present invention is to control a photomechanical effect produced by a laser.

A specific embodiment of the invention includes a laser apparatus that emits a pulsed light beam of laser light that causes a photo-mechanical effect through the manipulation of energy.

Additionally, the laser apparatus in conformity with an embodiment of the present invention regulates energy per pulse of the pulsed laser beam for inducing the photo-mechanical effect.

According to the embodiment of the present invention lasers are capable of controlling the amount of energy per pulse to the maximum value of 0.005mJ.

Furthermore, in the laser apparatus that is in accordance with an embodiment of the present invention the energy per pulse can be controlled to a level between 0.005 millijoules to 9.5 mJ.

Additionally, the laser apparatus according to an embodiment of the present invention may be used to apply an electric stimulus to the human body.

In addition, the laser device in accordance with an embodiment of the present invention controls the amount of energy in each pulse by regulating the power or a pulse width of laser output light.

Furthermore in the laser apparatus in accordance with an embodiment of the invention, the pulse width can be controlled to a degree of milliseconds (ms) or less.

The laser apparatus that is an embodiment of this invention also manages the photomechanical effect by controlling the intensity of the beam that is pulsed in the condition that a diameter is constantly maintained.

In addition, the laser apparatus in conformity with the embodiment of the present invention can be operated in a manner that photo-mechanical force is increased as well as in a state in which photo-mechanical force decreases. The laser apparatus boosts the energy per pulse of the pulsed laser beam when it is in the mode in which photo-mechanical force is increased and decreases energy per pulse of the pulsed laser beam in the mode that photo-mechanical force is decreased.

In addition, the laser apparatus in accordance with an embodiment of the present invention can perform a primary operation for constantly maintaining an output diameter for the laser beam. It can also perform an additional operation for altering the output diameter of the laser beam.

The laser device according to the embodiment of this invention maintains the same diameter of the pulsed beam when it reaches the desired target.

Furthermore, the laser apparatus as per one embodiment of the invention continuously maintains a size of the laser beam when the pulsed laser beam reaches its target by changing an output diameter of the laserbeam if a distance from the target is changed.

The laser apparatus according to the embodiment of this invention also includes an lens unit that permits to adjust the diameter of the output of the pulsed beam.

Furthermore, the laser apparatus in accordance with an embodiment of the present invention further includes a distance recognition unit for recognizing a distance from the target, wherein the lens unit is controlled based on distance informationrecognized by the distance recognition unit.

In addition in the laser apparatus, in conformity with the embodiment of the invention the distance recognition unit measures the distance with ultrasonic waves, infrared radiation, or a laser.

A haptic device according to an embodiment of this invention is able to generate an energy-pulsing laser beam energy, create a photo-mechanical effect through controlling the laser beam’s energy and create a mechanical sense by making use of the photo-mechanical effect. The haptic device according to the embodiment of this invention controls the effect of the photomechanical by controlling the energy output of the laser beam in a manner in which the beam’s diameter is constant maintained. The haptic apparatus also controls the mechanical sense through the control of the photomechanical effects.

A method of generating the photomechanical effect in accordance with an embodiment of the invention comprises: (a) controlling energy from a pulsed beam of laser light by an apparatus for lasers; (b) radiating the laser beam generated by the laser apparatus to an object and (c) inducing the photo-mechanical effects of the laser beam radiated towards the target.

In addition the method for generating an effect of photo-mechanical in accordance with the present invention controls the photomechanical effect by controlling the energy of the laser beam within the condition where the diameter of the laser beam that is pulsed is continuously maintained.

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