Abstract: A multi-functional telescopic device is disclosed which can be used as an optical telescope for general long-distance observation and astronomical observation or as a magnifying glass. More particularly, the telescopic device allows for rapidly switching a terminal eyepiece between long-distance observation and a horizontal eyepiece for astronomical observation. The telescopic device is characterized in that a rapidly switching reflective mirror is provided to an end of the terminal eyepiece and the horizontal eyepiece, so that a user can directly rotate an external switching knob to selectively switch the terminal eyepiece and the horizontal eyepiece. As a result, the user can not only observe remote objects conveniently, but also watch the stars directly through the horizontal eyepiece without having to look upwards at a large elevation angle.

Abstract: A telescope with a foldable and extendable base that can be extended before use and folded after use, including a telescope main body being cradled in a socket; a stanchion having an upper joint connecting to a joint base of the socket; a left base having a ring with an arc external cover and a left leg on a lateral; a right base having a circular groove with an arc body and a right leg on a lateral; a sliding base having an upper hinge for connecting with a lower joint of the stanchion through a bolt and a nut; a bolt passing through the circular groove and the bolting hole of the sliding base to enable the sliding base sliding round the ring and the arc external cover sliding round the arc body.

Abstract: A telescope with a foldable and extendable base that can be extended before use and folded after use, including a telescope main body being cradled in a socket; a stanchion having an upper joint connecting to a joint base of the socket; a left base having a ring with an arc external cover and a left leg on a lateral; a right base having a circular groove with an arc body and a right leg on a lateral; a sliding base having an upper hinge for connecting with a lower joint of the stanchion through a bolt and a nut; a bolt passing through the circular groove and the bolting hole of the sliding base to enable the sliding base sliding round the ring and the arc external cover sliding round the arc body.

Abstract: A device capable of exchanging image projection directions includes an inner body provided with an internal reflector having adjustable angles and a horizontal light permeation aperture; an accommodation tube formed at the rear of the inner body and an upper light permeation aperture formed at the top of the accommodation tube; an outer accommodation barrel disposed with at least two connection openings at the outer periphery thereof; and an inner accommodation barrel disposed with a long orifice and an outer connection opening, and is further flexibly connected into the outer accommodation barrel and fixed around the accommodation tube, such that the long orifice corresponds to the upper light permeation aperture for forming a path for light beams. The connection openings are connected to binocular connection barrels having various magnifications in advance, thereby viewing images with different magnifications and viewing ranges without dismantling or assembly of the binocular connection barrels.

Abstract: A device capable of exchanging image projection directions includes an inner body provided with an internal reflector having adjustable angles and a horizontal light permeation aperture; an accommodation tube formed at the rear of the inner body and an upper light permeation aperture formed at the top of the accommodation tube; an outer accommodation barrel disposed with at least two connection openings at the outer periphery thereof; and an inner accommodation barrel disposed with a long orifice and an outer connection opening, and is further flexibly connected into the outer accommodation barrel and fixed around the accommodation tube, such that the long orifice corresponds to the upper light permeation aperture for forming a path for light beams. The connection openings are connected to binocular connection barrels having various magnifications in advance, thereby viewing images with different magnifications and viewing ranges without dismantling or assembly of the binocular connection barrels.

Abstract: An adjusting device for adjusting a projecting direction of a view comprises the following components. A reflector is pivotally installed in a body case. The body case is formed with an incident hole, first viewing hole and a second viewing hole. A reflector is located within the body case and is pivotally installed thereto. An adjusting button is located on the upper cover. A rotary flange is installed on the adjusting button. Thereby, the user rotates the adjusting button so that a rotary arm is adhered on the adjusting button. When a user desires to see an outer view; by a driving the rotary arm, the reflector is driven to rotate to a predetermined angle. On the contrary, when the user desires to see outer view from the first viewing hole; the user only needs to restore the adjusting button to the original position.

Abstract: An adjusting device for adjusting a projecting direction of a view comprises the following components. A reflector is pivotally installed in a body case. The body case is formed with an incident hole, first viewing hole and a second viewing hole. A reflector is located within the body case and is pivotally installed thereto. An adjusting button is located on the upper cover. A rotary flange is installed on the adjusting button. Thereby, the user rotates the adjusting button so that a rotary arm is adhered on the adjusting button. When a user desires to see an outer view; by a driving the rotary arm, the reflector is driven to rotate to a predetermined angle. On the contrary, when the user desires to see outer view from the first viewing hole; the user only needs to restore the adjusting button to the original position.