A method and apparatus are provided for performing a therapeutic treatment on a patient's skin by concentrating applied radiation of at least one selected wavelength at a plurality of selected, three-dimensionally located, treatment portions, which treatment portions are within non-treatment portions. The ratio of treatment portions to the total volume may vary from 0.1% to 90%, but is preferably less than 50%. Various techniques, including wavelength, may be utilized to control the depth to which radiation is concentrated and suitable optical systems may be provided to concentrate applied radiation in parallel or in series for selected combinations of one or more treatment portions.

Method and apparatus for emr treatment

A light energy delivery head is provided which, in one aspect, mounts laser diode bars or other light energy emitters in a heat sink block which is adapted to cool both the emitters and a surface of a medium with which the head is in contact and to which it is applying light energy. In another aspect, various retroreflection configurations are provided which optimize retroreflection of back-scattered light energy from the medium. The size of the aperture through which light energy is applied to the medium is also controlled so as to provide a desired amplification coefficient as a result of retroreflection.

Light energy delivery head

A number of improvements are provided relating to computer aided surgery utilizing an on tool tracking system. The various improvements relate generally to both the methods used during computer aided surgery and the devices used during such procedures. Other improvements relate to the structure of the tools used during a procedure and how the tools can be controlled using the OTT device. Still other improvements relate to methods of providing feedback during a procedure to improve either the efficiency or quality, or both, for a procedure including the rate of and type of data processed depending upon a CAS mode.

On-board tool tracking system and methods of computer assisted surgery

Photocosmetic device for use in medical or non-medical environments (e.g., a home, barbershop, or spa), which can be used for a variety of tissue treatments. Radiation is delivered to the tissue via optical systems designed to pattern the radiation and project the radiation to a particular depth. The device has a variety of cooling systems including phase change cooling solids and liquids to cool treated skin and the radiation sources. Contact sensors and motion sensor may be used to enhance treatment. The device may be modular to facilitate manufacture and replacement of parts.

Cooling System For A Photocosmetic Device

A system for treating a selected dermatologic problem and a head for use with such system are provided. The head may include an optical waveguide having a first end to which EM radiation appropriate for treating the condition is applied. The waveguide also has a skin-contacting second end opposite the first end, a temperature sensor being located within a few millimeters, and preferably within 1 to 2 millimeters, of the second end of the waveguide. A temperature sensor may be similarly located in other skin contacting portions of the head. A mechanism is preferably also provided for removing heat from the waveguide and, for preferred embodiments, the second end of the head which is in contact with the skin has a reflection aperture which is substantially as great as the radiation back-scatter aperture from the patient's skin. Such aperture may be the aperture at the second end of the waveguide or a reflection plate or surface of appropriate size may surround the waveguide or other light path at its second end. The portion of the back-scattered radiation entering the waveguide is substantially internally reflected therein, with a reflector being provided, preferably at the first end of the waveguide, for returning back-scattered light to the patient's skin. The reflector may be angle dependent so as to more strongly reflect back scattered light more perpendicular to the skin surface than back scattered radiation more parallel to the skin surface. Controls are also provided responsive to the temperature sensing for determining temperature at a predetermined depth in the patient's skin, for example at the DE junction, and for utilizing this information to detect good thermal contact between the head and the patient's skin and to otherwise control treatment. The head may also have a mechanism for forming a reflecting chamber under the waveguide and drawing a fold of skin therein, or for providing a second enlarged waveguide to expand the optical aperture of the radiation.

System for electromagnetic radiation dermatology and head for use therewith

A laser treatment apparatus is constructed from a [a] laser apparatus 10 equipped with a laser light generating device 11 which has a solid-state laser 12 that generates a specified laser light, a fiber light amplifier 20 that amplifies the laser light generated by this laser light generating device, and a wavelength converter 40 that converts the amplified laser light into treatment laser light with a wavelength of approximately 193 nm using a nonlinear optical crystal, and [b] an irradiation optical device 60 which conducts the treatment laser light generated by this laser apparatus to the surface of the cornea and irradiates the surface of the cornea. As a result, a laser treatment apparatus can be obtained which is especially suitable for treatment of the cornea, and which uses a solid-state laser apparatus that is easy to maintain and that has a compact and light-weight construction.

Laser treatment apparatus

An ultraviolet laser apparatus according to the present invention comprises a laser generating portion having a single-wavelength oscillating laser for generating laser light having a single wavelength falling within a wavelength range from an infrared band to a visible band, an optical amplifier having a fiber optical amplifier for amplifying the laser light generated by the laser generating portion, and a wavelength converting portion for wavelength-converting the amplified laser light into ultraviolet light by using a non-linear optical crystal, whereby ultraviolet light having a single wavelength is generated. Further, an exposure apparatus according to the present invention serves to transfer a pattern image of a mask onto a substrate and comprises a light source including a laser apparatus for emitting a laser light having a single wavelength, a first fiber optical amplifier for amplifying the laser light, a light dividing device for dividing or branching the amplified laser light into plural lights, and second fiber optical amplifiers for amplifying the plural divided or branched lights, respectively; and a transmission optical system for transmitting the laser light emitted from the light source to the exposure apparatus.

Ultraviolet laser apparatus and exposure apparatus using same

An ultraviolet laser apparatus is characterized in that the apparatus comprises a laser beam generator having a single-wavelength oscillation laser for generating a laser beam of a single wavelength in a wavelength range of from the infrared region to the visible region, an optical amplifier having a fiber optical amplifier for amplifying the laser beam generated by the laser beam generator, and a wavelength converter for converting the wavelength of the amplified laser beam into an ultraviolet beam using a nonlinear optical crystal, and in that the apparatus produces ultraviolet beam of a single wavelength. An exposure apparatus for transferring the pattern of a mask onto a substrate is characterized by comprising a light source including a laser emitting a laser beam of a single wavelength, a first fiber optical amplifier for amplifying the laser beam, a beam-branching unit for branching the amplified laser beam into a plurality of beams, and a second fiber optical amplifier for amplifying the branched beams; and an optical transmission system for transmitting the laser beam emitted from the light source to the exposure apparatus.

Ultraviolet laser apparatus and exposure apparatus comprising the ultraviolet laser apparatus

A small and lightweight laser therapy apparatus using a solid-state laser is provided which is of easy maintenance and suited especially to treatment for the cornea A laser therapy apparatus comprises a laser beam generator (11) including a solid-state laser (12) for producing a predetermined laser beam; a laser device (10) including a fiber optic amplifier (20) for amplifying a laser beam produced by the laser beam generator, and a wavelength converter (40) for converting the amplified laser beam to a therapeutic beam of about 193-nm wavelength using a nonlinear optics crystal; and an optical system (60) for directing the therapeutic laser beam to the corneal surface

Tomoko Ohtsuki

Papers

Laser treatment apparatus

Ultraviolet laser apparatus and exposure apparatus using same

Ultraviolet laser apparatus and exposure apparatus comprising the ultraviolet laser apparatus

Laser therapy apparatus

Ultraviolet laser apparatus, and exposure apparatus and mehtod comprising ultraviolet laser apparatus