Abstract: The present invention relates to an LED lighting module for a low street light, installed at a low height on the periphery of a road or a median strip, to illuminate light in a direction crossing the road, and to an LED lens provided on the LED lighting module. When using the LED lighting module for the low streetlight and the LED lens, according to one embodiment of the present invention, streetlight can be installed at a low height thereby reducing the cost for streetlight installation, glare on a car driver can be prevented by evenly lighting the road in the horizontal direction while deflecting downward, and the loss of light can be minimized.

Abstract: The present invention relates to an LED lighting module for a low street light, installed at a low height on the periphery of a road or a median strip, to illuminate light in a direction crossing the road, and to an LED lens provided on the LED lighting module. When using the LED lighting module for the low streetlight and the LED lens, according to one embodiment of the present invention, streetlight can be installed at a low height thereby reducing the cost for streetlight installation, glare on a car driver can be prevented by evenly lighting the road in the horizontal direction while deflecting downward, and the loss of light can be minimized.

Abstract: Disclosed is a vacuum processing apparatus having a means for preventing counter-pressure between adjacent chambers, which comprises a process chamber, a transfer chamber, and a load lock chamber, comprising: a cassette chamber installed between the chambers, having slits formed at both opposite side surfaces to serve as a passage of a substrate; a vent detection part configured to detect a vent process in which a vent gas is injected into each chamber; a cassette chamber constant pressure inducing part comprising first and second bypass lines configured to connect each chamber and the cassette chamber and first and second intermittent valves respectively installed at the first and second bypass lines to control a gas flow through each bypass line; and a control part configured to determine whether the vent process or a vacuum process is performed in each chamber through a signal detected from the vent detection part.