The present invention relates to a polishing tool 10 comprising a holder 11, a ball 12 received in the holder 11, and a polishing foil 13 covering all or part of the free surface 12a of the ball 12.

The present invention relates to a polishing tool 10 comprising a holder 11, a ball 12 received in the holder 11, and a polishing foil 13 covering all or part of the free surface 12a of the ball 12.

Provided is a local polishing technique suitable for corrective polishing. Press polishing is performed while supplying a polishing solution between a work and a work-polishing rotating tool locally pressed against the work, the polishing solution having abrasive grains composed of organic particles with an average particle size of 5 μm or more dispersed in a liquid. The rotating tool is made of an elastic material.

Provided is a local polishing technique suitable for corrective polishing. Press polishing is performed while supplying a polishing solution between a work and a work-polishing rotating tool locally pressed against the work, the polishing solution having abrasive grains composed of organic particles with an average particle size of 5 μm or more dispersed in a liquid. The rotating tool is made of an elastic material.

Method for machining an optical surface of an optical lens, including: a lens blank providing step, during which a lens blank blocked on a lens blocker is provided; a clamping step, during which the lens blocker is clamped in a lens machining device; a tilting step, during which the lens blank and lens blocker are tilted relative to the rotation axis of the lens machining device; a surface position determining step, during which the position of the surface to be machined is determined based on the tilt angle of the lens blank and lens blocker relative to the rotation axis of the lens machining device; and a machining tool configuration step, during which the operational parameters of the lens machining tool are configured to manufacture the surface to be manufactured according to the determined surface position so the desired optical properties of the optical lens are respected.

Method for machining an optical surface of an optical lens, including: a lens blank providing step, during which a lens blank blocked on a lens blocker is provided; a clamping step, during which the lens blocker is clamped in a lens machining device; a tilting step, during which the lens blank and lens blocker are tilted relative to the rotation axis of the lens machining device; a surface position determining step, during which the position of the surface to be machined is determined based on the tilt angle of the lens blank and lens blocker relative to the rotation axis of the lens machining device; and a machining tool configuration step, during which the operational parameters of the lens machining tool are configured to manufacture the surface to be manufactured according to the determined surface position so the desired optical properties of the optical lens are respected.

A floating non-contact ultrasonic enhanced flexible sub-aperture polishing device and method are disclosed, an X-axis moving platform, a Y-axis moving platform, a Z-axis moving platform and a workpiece swinging platform in linkage control ensure normal lines of a tool and a workpiece are kept at an identical angle to realize sub-aperture processing; the ventilation main shaft acts air pressure on the ball spline's end portion to form an axial thrust to let the tool axially float; a dynamic balance among hydrodynamic pressure, air pressure and dynamic pressure is performed on the polishing liquid by rotation of the flexible tool; a tiny gap between the tool and workpiece is formed by elastic deformation of the flexible tool due to the dynamic pressure; a shearing force for removing materials is generated when the polishing liquid flows through the gap; a cavitation effect in the gap is formed by ultrasonic waves.

A polishing device for optical elements includes: a tool shank (1), and a polishing disc base; wherein the tool shank (1) is connected to the polishing disc base and is mounted on a tool shaft of a numerical-controlled processing device; wherein a polishing film (3) is stuck on the polishing disc base; the polishing disc base is a profiling polishing disc base (7), a cylinder polishing disc base (2), a profiling polishing disc base (12) or a spherical polishing disc base (8); wherein the tool shank (1) is independent and universal, thereby reducing the processing cost of the polishing device. A polishing method for optical elements is based on the shapes mentioned above of the polishing disc base, including steps of: fixing a polishing disc connecting rod (11); sticking a polishing film (3); trimming the polishing film (3); and polishing an unprocessed work piece (6).

Aspects of an ultrasonic polishing system include an ultrasonic actuator and a polishing arm. The ultrasonic actuator is configured to generate ultrasonic vibrations and the polishing arm is coupled to the ultrasonic actuator. The polishing arm includes a horn and a polishing ball. The horn has a proximal end and a distal end. The proximal end is coupled to receive the ultrasonic vibrations and the horn is configured to propagate the ultrasonic vibrations from the proximal end to a distal end. The polishing ball is attached to the distal end of the horn, where the polishing ball vibrates in response to the ultrasonic vibrations for polishing a surface of an optical element. The polishing ball is configured to provide a polishing area on the surface of the optical element that is smaller than an aperture of the optical element.

Aspects of an ultrasonic polishing system include an ultrasonic actuator and a polishing arm. The ultrasonic actuator is configured to generate ultrasonic vibrations and the polishing arm is coupled to the ultrasonic actuator. The polishing arm includes a horn and a polishing ball. The horn has a proximal end and a distal end. The proximal end is coupled to receive the ultrasonic vibrations and the horn is configured to propagate the ultrasonic vibrations from the proximal end to a distal end. The polishing ball is attached to the distal end of the horn, where the polishing ball vibrates in response to the ultrasonic vibrations for polishing a surface of an optical element. The polishing ball is configured to provide a polishing area on the surface of the optical element that is smaller than an aperture of the optical element.