| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser output control device and a laser scanning type display device having stable luminance and display colors.SOLUTION: Current values at two or more points larger than a threshold current value It that is a laser oscillating current, are supplied to an LD (a laser diode). At this time, light intensity characteristics P are generated on the basis of a light intensity L detected at a first light detector. A specific current value Is to be supplied to the LD, by which the light intensity L detected by the first light detector becomes a preliminarily-defined specific light intensity Ls, is calculated. In the case that a gradation level En is made equal to or more than a preliminarily-defined determination level Es, a current to be supplied to the LD is adjusted on the basis of the generated light intensity characteristics P. On the other hand, in the case that the gradation level En is made lower than the determination level Es, pulse width modulation drive of the LD is performed on the basis of a PWM (pulse width modulation) value Dn preliminarily associated with the gradation level En by using the specific current value Is as a reference. |
