Abstract: An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film, wherein in the ultraviolet band, the difference of between the wavelength with the transmittance at 80% of the absorbing film and the wavelength with the reflectivity at 80% of the first multilayer film falls in the range between 25 nm and 37 nm, the difference of between the wavelength with the transmittance at 50% of the absorbing film and the wavelength with the reflectivity at 50% of the first multilayer film falls in the range between 6 nm and 14 nm, and the difference of between the wavelength with the transmittance at 20% of the absorbing film and the wavelength with the reflectivity at 20% of the first multilayer film falls in the range between ?6 nm and 2.5 nm.

Abstract: A golf-club head cleaning device which includes a container body configuration with externally mounted control switch and having an interior main body including a top brush, a top cover, a power brush module mechanism, a motor, a middle housing, a blower, a bottom cover and a chargeable battery. The top brush which is a soft brush body is mounted within a bottom holding seat of a middle slot of the top cover, forming into a brushing device for the first brushing of the golf club head. The top cover is disposed within the middle housing and has a face which is positioned at the middle slot having the bottom holding seat for the mounting of the top brush; The cleaning device facilitates cleaning process of club head and provides an effective way of cleaning the grooves of the club head.

Abstract: A multi-functional earphone cum microphone is disclosed. The device comprises an earphone, a microphone, a call-transferring box and transmission cable or wire, characterized in that the earphone includes a main earphone and a secondary earphone being connected by a connection wire, and from the interior of the main earphone, a specific length of earphone signal wire is extended and the end head of the signal wire is mounted with the call-transferring box having a connection male socket for the linkage with connector of any transmission source.