Nidek Co., Ltd.

Yasuyuki Naito

Seiki Tomita

Toshifumi Sumiya

Hitoshi Abe

Hirokazu Nakamura

Tsuyoshi Yamada

Kenichi Hayashi

Kazunobu Kojima

Wataru Niwa

Shinichi Matsuura

Seiyo Harino

Naho Kawai

A laser treatment apparatus for performing treatment by irradiating an affected part with a laser beam comprises: a laser source capable of emitting beams of a plurality of different wavelengths; a first setting unit which sets an irradiation amount of a laser beam for treatment of a wavelength to be used for treatment; an emission amount changing unit which changes an emission amount of the beam in plural levels; an attenuating unit which attenuates the beam emitted by the laser source; and a control part which controls the emission amount changing unit and the attenuating unit based on the set irradiation amount of the treatment beam.

Laser treatment apparatus

A laser treatment apparatus for irradiating an affected part of a patient's eye with a treatment laser beam to treat the affected part is disclosed. The laser treatment apparatus includes treatment beam irradiation section including a first irradiation optical system for irradiating the treatment beam; aiming beam irradiation section including a second irradiation optical system for irradiating an aiming beam, the second irradiation optical system being optically adjusted such that sighting of the treatment beam is completed when the aiming beam forms a predetermined shape on a reflection plane; image pickup section including an image pickup optical system for imaging an area including the affected part of the patient's eye; sighting detection section for processing an image of the aiming beam picked-up by the image pickup section to detect a sighting state; movement detection section for detecting movement in an optical axis direction of at least one of at least a part of the image pickup optical system and at least a part of the irradiation optical system; and determination section for determining a direction in which at least one of at least the part of the image pickup optical system and at least the part of the irradiation optical system is to be moved based on results detected by the sighting detection section and the movement detection section respectively.

A laser treatment apparatus for performing treatments on an affected part by irradiating the affected part with a laser beam for treatment is disclosed. This apparatus includes a laser oscillator, a cooling unit including a fan which cools the laser oscillator, a temperature sensor which directly or indirectly detects a temperature of the laser oscillator, and a control unit which drives the fan at roughly constant low speed when a detected temperature by the temperature sensor is below a predetermined reference value and at roughly constant high speed when the detected temperature is the predetermined reference value or more.

A laser treatment apparatus having a guide beam forming mechanism for guiding a treatment laser beam to a diseased part, including a laser beam irradiation optical system which irradiates the diseased part with the treatment laser beam, a target for obtaining a position of the central fovea of a patient's eye which is projected to the fundus, and a fixation mark for fixing the patient's eye so that the central fovea is located at a predetermined position with respect to the target. With the laser treatment apparatus, the central fovea of a patient's eye is easily judged, and, even for a patient's eye having reduced central visual acuity, the fixation is stably conducted.

A laser treatment apparatus for performing treatments on a patient's eye by irradiating a laser beam is provided with an observation optical system including eyepieces through which a patient's eye is observed, wherein the brightness of a display part for displaying setting information such as laser irradiation conditions and others is controlled based on the light reception quantity detected by a light quantity detecting device.

A laser apparatus for oscillating laser beams has a resonator,in which an output mirror,and a reflection mirror,(,) are disposed opposite to each other on both sides of a laser tube,. The reflection mirror,is rotated about a first axis and a second axis intersecting the first axis at a predetermined angle, respectively. A control section measures output values of laser beams corresponding to three angles during the rotation of the mirror,to determine a rotating range. Then, the optimum angles of the mirror,with respect to the respective first and second axis directions are determined by causing the mirror,to sequentially rotate in the determined rotating range.

Growing community of inventors

Nukata-gun, Japan

Yasuyuki Naito