Abstract: A light adjusting roller blind device has a support assembly, and a driving assembly, an adjusting mechanism and a blind assembly mounted on the support assembly. A blind of the blind assembly can be adjusted by simply detaching a second holding part from a first holding part and then releasing a first rope. The blind can be stably lowered along with the releasing of the first rope. Therefore, it is easy and convenient for the user to adjust the blind of the light adjusting roller blind device.

Abstract: A light adjusting roller blind device has a support assembly, and a driving assembly, an adjusting mechanism and a blind assembly mounted on the support assembly. A blind of the blind assembly can be adjusted by simply detaching a second holding part from a first holding part and then releasing a first rope. The blind can be stably lowered along with the releasing of the first rope. Therefore, it is easy and convenient for the user to adjust the blind of the light adjusting roller blind device.

Abstract: A transmission assembly for a roller blind has a mounting frame, a roller, a coil spring, a spring axle, a turning element, a torsional spring, a major damper, a positioning device and a blind cloth device. The roller is mounted in the mounting frame. The coil spring is mounted in the roller. The spring axle is mounted in the coil spring. The turning element is connected to the spring axle. The torsional spring is mounted in the turning element. The major damper is connected to the coil spring and has a turning rod. The positioning device is mounted in the roller and has a rotating mount, a rail mount and a positioning ball. The rail mount is mounted in the rotating mount and has two rails. The positioning ball is mounted between the rotating mount and the rails. The blind cloth device is mounted the mounting frame.

Abstract: A safety assembly for a roller blind has a fixing device, a moving device, a flexible element, a rotating device, a hooking device and a bead cord. The fixing device has a base panel, a stopping arm and a reset mount. The moving device is movably connected to the fixing device between the stopping arm and the reset mount. The flexible element is mounted between the reset mount and the moving device to push the moving device to move relative to the fixing device. The rotating device is rotatably mounted on the moving device and has a stopping disc and a rotating disk. The hooking device is mounted securely below the fixing device, the moving device and the rotating device. The bead cord is mounted between the rotating device and the hooking device to allow the rotating device rotating relative to the moving device by pulling the bead cord.

Abstract: A curtain assembly has a frame, a first curtain, a second curtain and a positioning device. The frame has a top portion, a bottom portion and two side portions mounted between the top portion and the bottom portion. The curtains are attached respectively to the top portion and the bottom portion of the frame and each has a permeability to light different from each other. The positioning device is mounted in the frame and connected to the first and second curtains to hold the first and second curtains at desired positions. Accordingly, a curtain assembly with an adjustable permeability to light and versatile in use is provided.