A light based skin treatment device comprises a laser light source for providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue. In one arrangement, a focusing system has a pre-focusing lens for increasing the convergence of the an incident light beam and a skin contact lens having convex light input and light exit surfaces. The focal spot position is controlled by adjusting a spacing between the pre-focusing lens and the skin contact lens. In another arrangement, there is an adjustable lens system before an adjustable focusing system for providing compensation for aberration in the adjustable focusing system.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

A light based skin treatment device comprises a laser light source for providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue. In one arrangement, a focusing system has a pre-focusing lens for increasing the convergence of the an incident light beam and a skin contact lens having convex light input and light exit surfaces. The focal spot position is controlled by adjusting a spacing between the pre-focusing lens and the skin contact lens. In another arrangement, there is an adjustable lens system before an adjustable focusing system for providing compensation for aberration in the focusing system.

The present invention relates to a laser beam device outputting a multi-spot laser beam, and a laser bean hand piece. The laser beam device, according to the present invention, comprises: a light source unit which generates and emits a single-spot laser beam having a first wavelength; a laser beam oscillation unit which outputs the first wavelength single-spot laser beam emitted from the light source unit as any one of a first wavelength multi-spot laser beam and a single-spot laser beam having a second wavelength, and then outputs any one of the outputted first wavelength multi-spot laser beam and second wavelength single-spot laser beam as a second wavelength multi-spot laser beam, and an amplification unit which amplifies the second wavelength multi-spot laser beam so that the output energy of the second wavelength multi-spot laser beam outputted from the laser beam oscillation unit is relatively high output energy.

Methods and devices for an optical assembly for a laser generator comprise: a laser source producing a first beam of light and an optical assembly. The optical assembly comprises a prism. The prism has a bottom surface configured to receive a first beam at an incoming angle of incidence relative to a first surface normal, and a hypotenuse surface configured to transmit, at an exit angle relative to a second surface normal, a second beam having a second aspect ratio. The optical assembly further comprises a plano-convex lens configured to transmit the second beam to a coupler. The coupler comprises a first coupling plane at a first distance from the plano-convex lens and a second coupling plane at a second distance from the plano-convex lens. The combination of the prism and the plano-convex lens is configured to change the beam divergence, so that the first coupling plane has a third aspect ratio and the second coupling plane has a fourth aspect ratio.

An ablation instrument (e.g., an ablation balloon catheter system) includes an elongate catheter having a housing with a window formed therein. An energy emitter is coupled to the elongate catheter and is configured to deliver ablative energy. A controller is received within the window and is coupled to the energy emitter such that axial movement of the controller within the window is translated to axial movement of the energy emitter and rotation of the controller within the window is translated into rotation of the energy emitter. The instrument includes a motor that is at least partially disposed within the housing of the catheter; a first gear that is operatively connected to and driven by the motor; and a second gear that is coupled to the energy emitter and is driven by the first gear to cause rotation of the energy emitter, while allowing the energy emitter to move axially.

A skin care device using multiple composite laser pulses according to an embodiment of the present disclosure includes: a laser generating unit including an energy portion configured to supply energy, a light emission portion configured to generate light by absorbing the energy supplied from the energy portion, a first mirror and a second mirror configured to form a resonance path in which the light generated from the light emission portion is amplified, a polarizing portion disposed on an optical resonant path between the first mirror and the second mirror and configured to polarize the light, and a first switch and a second switch configured to convert a polarization component of an incident polarized light; and a control unit configured to control the first switch and the second switch so that the laser generating unit operates in a single laser pulse mode or a multiple laser pulse mode.

An apparatus and method for laser-assisted machining (LAM) of non-monolithic composite bone material is described. A high intensity focused laser beam conducts bone material removal in extremely short time duration without causing any thermal (necrosis) and mechanical damage to the material surrounding the bone-laser interaction region. A computer associated with the apparatus for machining bone preferably employs a Multiphysics computational modeling approach which takes into account physical phenomena such as heat transfer, fluid flow, convection mixing, and surface tension when determining bone target volume, calculating material properties of the multicomponent and multicomposition composite bone material, determining parameters for the laser-assisted machining based on the material properties, and performing the laser-assisted cutting/shaping/machining of bone.

In one aspect of the present disclosure, a laser fiber may include an optical fiber. The optical fiber may include a proximal portion. The optical fiber also may include a distal portion having a distal end. The optical fiber may be configured to transmit laser energy from the proximal portion to the distal portion for emission of the laser energy from the distal end. The optical fiber also may include a distal tip surrounding the distal portion to protect the distal portion. The distal tip may include a sheet glass material having a laser energy emitting surface. The laser energy emitting surface may be defined by a chemically-strengthened surface layer.

The infrared denaturing device of the present invention is provided with: an infrared lamp which emits infrared light; a light guide which guides the infrared light; and a light projecting body which radiates the infrared light guided from the light guide onto an object to be denatured. The light projecting body is provided with: a reflecting surface which reflects the infrared light; and a radiating surface which radiates the infrared light reflected by the reflecting surface onto an object to be irradiated. Further, there is also provided a denaturing detection sensor which detects denaturing, by means of the infrared light, of a region being denatured.