An image display device for displaying an image on a projection surface through scanning of a laser beam that accompanies fluctuations in the scanning speed, characterized by comprising: a laser control unit for selecting a first waveform pattern that includes a plurality of first on periods and at least one first off period that intervenes between said first on periods of said first waveform pattern within a period for displaying a first pixel, and for selecting a second waveform pattern that includes a plurality of second on periods and at least one second off period that intervenes between said second on periods within a period for displaying a second pixel that is longer than said period for displaying a first pixel, where the number of on periods in the first waveform pattern is smaller than the number of on periods in the second waveform pattern, and the ratio of the length in time of the total of the first on periods to the length in time of the first waveform pattern is larger than the ratio of the length in time of the total of the second on periods to the length in time of the second waveform pattern, and said second pixel is scanned at a scanning speed that is slower than that for said first pixel; a laser source (2a-2c) for emitting a segmented laser beam according to said plurality of first on periods at a current level corresponding to the display gradation of said first pixel during said plurality of first on periods in said first waveform pattern selected by said laser control unit, and for emitting a segmented laser beam according to said plurality of second on periods at a current level corresponding to the display gradation of said second pixel during said plurality of second on periods in said second waveform pattern selected by said laser control unit, and at the same time, allowing a current level to be set to the level at a bias current or lower irrelevant of said display gradations in said first off period and said second off period, wherein the bias current is the value on the border between the LED light emission and the laser oscillation of the laser sources (2a-2c); and a scanning mirror from which a laser beam that pertains to said first pixel and said second pixel and that has been emitted from said laser source is reflected in accordance with its shifting angle so as to be projected onto said projection surface following a predetermined scanning order. a laser control unit for selecting a first waveform pattern that includes a plurality of first on periods and at least one first off period that intervenes between said first on periods of said first waveform pattern within a period for displaying a first pixel, and for selecting a second waveform pattern that includes a plurality of second on periods and at least one second off period that intervenes between said second on periods within a period for displaying a second pixel that is longer than said period for displaying a first pixel, where the number of on periods in the first waveform pattern is smaller than the number of on periods in the second waveform pattern, and the ratio of the length in time of the total of the first on periods to the length in time of the first waveform pattern is larger than the ratio of the length in time of the total of the second on periods to the length in time of the second waveform pattern, and said second pixel is scanned at a scanning speed that is slower than that for said first pixel; a laser source (2a-2c) for emitting a segmented laser beam according to said plurality of first on periods at a current level corresponding to the display gradation of said first pixel during said plurality of first on periods in said first waveform pattern selected by said laser control unit, and for emitting a segmented laser beam according to said plurality of second on periods at a current level corresponding to the display gradation of said second pixel during said plurality of second on periods in said second waveform pattern selected by said laser control unit, and at the same time, allowing a current level to be set to the level at a bias current or lower irrelevant of said display gradations in said first off period and said second off period, wherein the bias current is the value on the border between the LED light emission and the laser oscillation of the laser sources (2a-2c); and a scanning mirror from which a laser beam that pertains to said first pixel and said second pixel and that has been emitted from said laser source is reflected in accordance with its shifting angle so as to be projected onto said projection surface following a predetermined scanning order.