this kind of battery of laser pointer is not a problem for the customer

 The threshold current Ith: laser tube began to produce laser oscillation current in terms of low-power laser tube, and its value is about tens of mA, with a threshold current strained multiple quantum well structure laser tube can be as low as 10mA . Operating current Iop: namely, the laser tube to achieve the rated output power of the drive current, this value is more important to the design and debugging of the laser driver circuit. The customized service can provide a better and more convenient experience of laser pointer for the customer.
Vertical divergence angle θ ⊥: light-emitting laser diode with open angle in the direction of the vertical PN junction, usually around 15 ? ~ 40 ?. Horizontal divergence angle θ ∥: light-emitting laser diode with open angle and parallel to the direction of the PN junction, usually about 6 ? ~ 10 ?. Monitor current Im: the laser tube at rated output power, the PIN diode current flowing through. The semiconductor laser photoelectric switch. Laser photoelectric switch is composed of two parts, the laser transmitter and receiver, used to complete the test objectives, counting, positioning, stroke control, remote work, the general block diagram shown in Figure 5. We suggest the customer should know more details about laser pointer .In all, this kind of battery of laser pointer is not a problem for the customer
Figure 5 with a dedicated remote control integrated circuit chip, BA5104, BA5204 (Editor's note: BA5104/5204 now does not produce, instead of model SM5031/5032) and M6938 production of semiconductor laser photoelectric switch transmitter and receiver circuit. Figure 6 (a) The BA5104 is a transmitter chip, the K1 ~ the K8 is the control input, internal pull-up resistor. When either a key is pressed, the OSC1 and OSC2 pin internal clock circuit and oscillator circuit composed of an external 455kHz crystal, capacitors C1, C2 onset, frequency generator 38kHz carrier frequency divided by the internal circuitry. And then the user should require the customized service of laser pointer suitable to them according to the actual situation.
The BA5104 C1, C2 clients and K1 ~ K8 pin input data is encoded, the serial output from D0 side, sent the signal of the modulated carrier pulse laser-driven semiconductor laser tube LD after Darlington D1581 amplification. Potentiometer W to adjust the laser tube current, so that it is within the rated operating current. LED side is the launch status display output, high output, the LED illuminates. C1, C2 end user code input, you can set four kinds of encoding. LD semiconductor laser diode in the figure is a key component of the photoelectric switch transmitter.