1/5ชิ้น5โวลต์เลเซอร์หัวเลเซอร์ไดโอดจุดวัสดุทองแดงเซมิคอนดักเตอร์หลอดเลเซอร์6มิลลิเมตรเส้นผ่านศูนย์กลางภายนอก

5V laser head diode dotted copper semiconductor laser tube 6MM outer diameter If you have purchased 3V and 5V, the longer cable is 5V, and the shorter cable is 3V. 5V laser head laser diode dotted copper semiconductor laser tube 6MM outer diameter Red positive pole black is negative pole Wavelength: 650NM Power: 5MW Outer diameter: 6MM 1: Pay attention to the safety of the laser battery, and prevent others from disassembling the electric power cell to cause short-circuit burning or battery explosion accidents. 2: The particularity of the laser emission principle and the production process determines that the laser has the characteristics that ordinary light does not have: three good (good monochromaticity, good coherence, good directionality) and high (high brightness). 3: Mainly used for laser toys, various level meters, ground wire meters, etc. Making an electronic pointer pen: The teacher uses laser projection points to remind students to observe and think during lectures. Electronic level: Let the motor drive the bald head to rotate or twist, and project it into a straight line on the wall for reference when decorating or posting New Year pictures. Miniature LCD projection: remove the condenser lens, let the laser light through the controllable LCD screen, can produce clear projection on the wall. Long-distance laser monitor: Let the laser shine on the glass of the room being eavesdropped on, and then receive the laser beam reflected from the glass, and detect the vibration of the glass to restore the sound of the room. Long-distance light-controlled anti-theft alarm: Install a laser emitting tube and a photoresistor at one corner of the fish pond or watermelon field that needs to be protected, and install a mirror at the other three corners to form a protection zone. Long-distance laser wireless communication: Use a pair of laser transceivers to face each other on two remote roofs, and use the serial communication protocol of the single-chip microcomputer to send and receive files, and even connect to the Internet. The laser head is composed of three parts: a light-emitting tube core, a condenser lens, and a copper adjustable sleeve. These three parts have been assembled when sent to the user, the lens focal length has been adjusted, and they have been glued with strong glue. Well, the user can work after plugging in the 5V DC power supply.