Abstract: A diffuser for a hair dryer includes a main body case, an adjusting part rotatably mounted at the main body case, and a comb-tooth part mounted at the adjusting part and including a plurality of comb teeth. A rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to move telescopically relative to the main body case, to adjust a length of a portion of each of the plurality of comb teeth protruding out of the main body case.

Abstract: Disclosed is a hair curler, which relates to the technical field of hairdressing tools. The hair curler includes a handle and a hair curling component, the hair curling component includes a thermal conductive cylinder and a hair rotating rack, the thermal conductive cylinder is configured to protrude from the top of the handle, a hair entry groove is formed on the top of the thermal conductive cylinder, the hair rotating rack is a closed annular structure and is rotatably provided on the peripheral side of the thermal conductive cylinder, a hair rotating entry is provided on the side wall of the hair rotating rack and is configured to extend along the height direction of the hair rotating rack, and in response to the stop of the hair rotating rack, the hair rotating entry is provided opposite to the hair entry groove.

Abstract: A system includes an imaging system and a fiber detection and alignment system. The fiber detection and alignment system includes one or more neural networks trained to detect end faces of one or more fibers in an image and to predict rotation angle and direction of rotation for each fiber that will align an axis of the fiber to associated reference keys. In operation, the imaging system generates an image of an end face of one or more polarization-maintaining (PM) fibers to be aligned. The fiber detection and alignment system generates fiber detection information, such as bounding boxes around end faces of each fiber in the image, and fiber alignment information, such as an alignment instruction indicating a rotation angle and direction of rotation that will align fast or slow axes of each fiber to associated reference keys. The novel system provides a scalable technique to automatically align PM fiber.