JPH02108166U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block circuit diagram conceptually showing the main parts of the pen-type barcode reader according to the present invention;
The figure is a schematic configuration diagram of the semiconductor laser temperature monitoring device shown in FIG. 1, FIG. 3 is a graph showing control by the semiconductor laser temperature monitoring device shown in FIG. 1, and FIGS. FIG. 4 is a schematic configuration diagram of a semiconductor laser temperature monitoring device, and FIG. 5 is a timing diagram of the temperature monitoring device shown in FIG. 4. 6 is a cross-sectional view showing the internal structure of the pen body of the pen-type barcode reader according to the present invention, FIG. 7 is a cross-sectional view taken along the line ``-'' in FIG. 6, and FIG. FIG. 9 is an enlarged view of the mounting portion of the condenser lens shown in FIG. 6, and FIG. 10 is a diagram showing a schematic structure of the pen body of a conventional pen-type barcode reader. 10... Semiconductor laser, 10'... Target, 30
...Pen body, 50...Auto power control section,
54...Thermistor, 55...Comparator.

Claims (1)

[Claims for Utility Model Registration] A pen-shaped barcode reader that reads barcode information by non-contact scanning the object while irradiating the object with visible laser light emitted from a visible light-emitting semiconductor laser. a temperature monitoring device that detects whether the temperature of the visible light emitting semiconductor laser has reached a predetermined value or higher, and stops driving the visible light emitting semiconductor laser when the temperature of the visible light emitting semiconductor laser is higher than the predetermined temperature; A pen-type barcode reader characterized by being equipped with.