Patent ID: 9291807
Filing Date: 2016-03-22
CPC Classification: G01J,G01N,G02B

Claim Text:
1. An image acquisition device comprising: a light source configured to emit laser light and to be capable of controlling a wavelength of the laser light, wherein the light source emits laser light having a first wavelength and laser light having a second wavelength that is different from the first wavelength in a switching manner; a measurement unit configured to scan a sample using the laser light and to measure an intensity of measurement target light from the sample by receiving the laser light, wherein the measurement unit scans the sample using each of the laser light having the first wavelength and the laser light having the second wavelength and measures a first intensity of the measurement target light that is based on the laser light having the first wavelength and a second intensity of the measurement target light that is based on the laser light having the second wavelength; and a control unit configured to generate an image of the sample based on intensity distribution of the measured measurement target light, wherein the control unit controls a wavelength of the laser light based on the intensity distribution of the measured measurement target light and controls at least one of the first wavelength and the second wavelength based on the intensity distribution of the first intensity and the intensity distribution of the second intensity, wherein the measurement unit measures an intensity of the measurement target light that is based on the laser light having the wavelengths at each of a wavelength that is higher than one of the wavelengths and a wavelength that is lower than the wavelength, and wherein the control unit computes contrast of each of the intensity distribution of the measurement target light that is based on the laser light having the high wavelength and the intensity distribution of the measurement target light that is based on the laser light having the low wavelength and compares the contrast, and thereby controls the one wavelength to be one of the high wavelength and the low wavelength corresponding to the intensity distribution in which the computed contrast is high based on the comparison result.