Abstract: The present disclosure discloses a light-transmittance device and a use method, and belongs to the technical field of manufacturing of rotary equipment. The light-transmittance device includes cylinder sections, a two-column vertical lathe, and a vertical lathe platform; T-shaped supporting fixtures are arranged inside the cylinder sections; light-transmittance tools are arranged at center positions of the cylinder sections; two ends of the cylinder sections are provided with rolling ring base plates which are paired and mounted with the cylinder sections; a roller frame is arranged on a lower side of each group of cylinder section; furthermore, the rolling frames are slidably connected with a rigid rail; a theodolite is arranged on one side close to the cylinder sections; and a triangular bracket and a light-transmittance platform are arranged on a lower side of a shell of the theodolite.

Abstract: A light-emitting keyboard module with a metal base material flexible copper-clad double-sided circuit board, comprising a double-sided circuit board, a trigger layer, a light-guiding film, an elastic conducting member, an LED light and a keycap. The trigger layer is arranged on the double-sided circuit board, and conducting contacts are arranged under the trigger layer corresponding to a position of the double-sided circuit board. A conduction pressing point is arranged at a position corresponding to the conducting contact above the trigger layer, the LED light is arranged on the double-sided circuit board. The trigger layer is provided with a first through hole, the light-guiding film is arranged above the trigger layer, the light-guiding film is provided with a second through hole. The light-guiding film is provided with a third through hole, an elastic conducting member is arranged at a position corresponding to the third through hole.double-sided.

Abstract: A reflective four-in-one light-emitting key core module, wherein an insulating layer is arranged on a support structure, a circuit layer is arranged on the insulating layer, a spacer layer is arranged above the insulating layer, a first through hole is opened in the spacer layer at a position corresponding to the keycap, an elastic conducting member is arranged at the position corresponding to the first through hole, a light-guiding film is arranged above the spacer layer, a conductive sheet is fixedly arranged at a position corresponding to the elastic conducting member, light-guiding mesh points are provided on the light-guiding film, a LED light is arranged on the circuit layer and corresponding to the keycap, a second through hole is opened on the spacer layer corresponding to a position of the LED light, a third through hole is opened on the light-guiding film at a position corresponding to the LED light.

Abstract: A light-emitting keyboard module with a metal base material flexible copper-clad double-sided circuit board, comprising a double-sided circuit board, a trigger layer, a light-guiding film, an elastic conducting member, an LED light and a keycap. The trigger layer is arranged on the double-sided circuit board, and conducting contacts are arranged under the trigger layer corresponding to a position of the double-sided circuit board. A conduction pressing point is arranged at a position corresponding to the conducting contact above the trigger layer, the LED light is arranged on the double-sided circuit board. The trigger layer is provided with a first through hole, the light-guiding film is arranged above the trigger layer, the light-guiding film is provided with a second through hole. The light-guiding film is provided with a third through hole, an elastic conducting member is arranged at a position corresponding to the third through hole double-sided.

Abstract: A straight-through three-in-one light-emitting key core module comprising a support structure, an insulating layer, a circuit layer, a spacer layer, an elastic conducting member, an LED light and a keycap, wherein the insulating layer is arranged on the support structure, the circuit layer is arranged on the insulating layer, and the spacer layer is arranged above the insulating layer, a first through hole is opened in the spacer layer at a position corresponding to the keycap, an elastic conducting member is arranged at a position corresponding to the first through hole, an LED light is arranged on the circuit layer and is arranged corresponding to the keycap, a second through hole is opened on the spacer layer corresponding to a position of the LED light, the LED light is arranged in the second through hole, and the keycap is arranged above the elastic conducting member.

Abstract: A reflective four-in-one light-emitting key core module, wherein an insulating layer is arranged on a support structure, a circuit layer is arranged on the insulating layer, a spacer layer is arranged above the insulating layer, a first through hole is opened in the spacer layer at a position corresponding to the keycap, an elastic conducting member is arranged at the position corresponding to the first through hole, a light-guiding film is arranged above the spacer layer, a conductive sheet is fixedly arranged at a position corresponding to the elastic conducting member, light-guiding mesh points are provided on the light-guiding film, a LED light is arranged on the circuit layer and corresponding to the keycap, a second through hole is opened on the spacer layer corresponding to a position of the LED light, a third through hole is opened on the light-guiding film at a position corresponding to the LED light.

Abstract: The present invention discloses a computer thin film switch keyboard, wherein the keyboard comprises keys/keycaps, a light guide film, a fixing film/air hole layer, metal domes, an air slot layer, a conductive film/PCB and a key plate, the key plate is disposed at the lowest layer, the conductive film/PCB is disposed above the key plate, the air slot layer is disposed above the conductive film/PCB, the metal domes are disposed on the conductive film/PCB, more than one metal dome is disposed corresponding to key configurations on the keyboard, the fixing film/air hole layer is disposed above the metal domes, and the keys/keycaps are disposed above the fixing film/air hole layer. The present invention has characteristics of being light, thin, and easy to carry, and having a Bluetooth function, a short stroke, and lower noises, etc.

Abstract: A case keyboard with thin film switches is provided. The case keyboard includes a case, a tablet PC fixing frame and a keyboard main body. The tablet PC fixing frame is fixedly installed on a surface of the case, and the keyboard main body is fixedly installed on the other surface of the case. The keyboard main body includes keys/keycaps, a fixing film/air hole layer, metal domes, an air slot layer, a conductive film/PCB and a key plate. The key plate is disposed above the lowest layer and is fixedly installed on the case. The conductive film/PCB is disposed above the key plate, the air slot layer is disposed above the conductive film/PCB, and the metal domes are disposed above conductive film/PCB. More than one metal dome is disposed corresponding to key configurations on the keyboard, the fixing film/air hole layer is disposed above the metal domes, and the keys/keycaps are disposed above the fixing film/air hole layer.

Abstract: The present invention discloses a computer thin film switch keyboard, wherein the keyboard comprises keys/keycaps, a light guide film, a fixing film/air hole layer, metal domes, an air slot layer, a conductive film/PCB and a key plate, the key plate is disposed at the lowest layer, the conductive film/PCB is disposed above the key plate, the air slot layer is disposed above the conductive film/PCB, the metal domes are disposed on the conductive film/PCB, more than one metal dome is disposed corresponding to key configurations on the keyboard, the fixing film/air hole layer is disposed above the metal domes, and the keys/keycaps are disposed above the fixing film/air hole layer. The present invention has characteristics of being light, thin, and easy to carry, and having a Bluetooth function, a short stroke, and lower noises, etc.