Abstract: An eyeglass device includes a primary frame and an auxiliary frame for receiving two primary lenses and two auxiliary lenses respectively. The primary frame includes two brow portions and two primary magnetic members disposed respectively on the two brow portions or on top edges of the two primary lenses. Each of the primary magnetic members has a magnetic surface facing upwards or downwards or rearwards. The auxiliary frame includes two brow portions and two auxiliary magnetic members disposed respectively on the two brow portions or on top edges of the two auxiliary lenses to be mutually magnetically attachable with the two primary magnetic members.

Abstract: A light assembly that can be magnetically attached to a pair of glasses. The assembly has a light source and a housing, which has a first magnetic element. When the light assembly is attached to a pair of glasses, the person wearing the glasses would not block the light emitted from the light assembly; the first magnetic element is magnetically coupled to a second magnetic element; and at least a portion of the housing extends over at least a portion of the glasses to provide support for the light assembly, if necessary.

Abstract: A light assembly that can be magnetically attached to a pair of glasses. The assembly has a light source and a housing, which has a first magnetic element. When the light assembly is attached to a pair of glasses, the person wearing the glasses would not block the light emitted from the light assembly; the first magnetic element is magnetically coupled to a second magnetic element; and at least a portion of the housing extends over at least a portion of the glasses to provide support for the light assembly, if necessary.

Abstract: A linking device for attaching secondary lenses to a pair of eyeglasses incorporates a magnetic component that allows the main body to be installed either on the end piece or on the bridge thereof, corresponding to the position of at least one magnetic holding pad on the secondary lenses; alternatively, the magnetic component can also be installed on two ends or in the middle section of the secondary lenses, corresponding to the position of at least one holding pad on the frame of eye glasses. Under such design, a pair of secondary lenses can be magnetically mounted onto the frame of a pair of regular eye glasses in front of the glass lenses as removable sunglasses.

Abstract: A computer-aided learning method and apparatus allowing a student to select an instructor from many instructors to learn a subject, and vice versa. Each user has an identifier. The apparatus can include a determinator, a search engine, a session manager, an account manager, a categorizer, and a storage medium. The determinator determines the type of user based on at least the identifier of the user. If the user is a student, the search engine identifies the instructor based on information previously stored in the storage medium regarding the instructors; the session manager manages a session between the student and the identified instructor for learning the subject; and the account manager processes an account based on the duration of the session for collecting a payment from the student to pay the instructor. If the user is an instructor, based on inputs from the instructor, the categorizer generates the instructor's profile to be identified.