To provide a faraday rotator using a TGG ceramic sintered compact and a light isolator using the faraday rotator such that the influence of scattered light can be relatively reduced and overall characteristics degradation for the entire light isolator is minimized so that a high extinction ratio of at least 38 dB or greater is achieved. [Solution] The faraday rotator according to the present invention uses a TGG ceramic sintered compact having an average particle diameter of 0.2 to 5.0 m, and has a transmission beam diameter of 0.3 mm or more, the TGG ceramic sintered compact being preferably annealed.

Foam products of a material having many voids or gas bubbles therein are marked by one or more of a plurality of devices capable of melting and/or vaporizing a desired pattern into a surface portion of the foam product, at least some doing so by movement of a hot tool, laser, flame, hot gas or other hot item, and systems and methods for making the mark or marks forming the desired pattern are disclosed along with the so marked foam products

The present invention relates to a method for the automated production of a workpiece having at least one diaphragm, including a workpiece for an electrochemical sensor, including providing a workpiece that has a wall with at least one continuous opening through the wall, wherein a diaphragm body is affixed in the at least one opening, such that the diaphragm body completely fills a cross-section of the opening, and processing the diaphragm body by means of a laser.

A device for producing molded concrete blocks includes a mold lower part in which at least one mold cavity is formed and a mold upper part including at least one pressure piece with a lower face facing the mold cavity, an upper face facing away from the mold cavity, and lateral surfaces, wherein the pressure piece has fluid openings on the lower face and/or on the lateral surfaces and is designed to engage into the mold cavity such that when the pressure piece is engaged, a fluid can be introduced into the mold cavity from the fluid openings and/or when the pressure piece is engaged, a fluid can be discharged out of the mold cavity from the fluid openings.

Provided is a multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.

A decorative concrete with a very uniform finish surface and a method of fabricating the same is disclosed. A concrete mixture is poured over a subgrade which defines an exposed surface. The exposed surface is finished with any of several techniques, and the surface is then worked with an abrasive material, and additional techniques are used to color and seal the concrete.