Author Affiliations
1State Key Laboratory of Optical Technologies for Micro-fabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China2University of Chinese Academy of Sciences, Beijing 100049, Chinashow less
Fig. 1. Axial and side views of binary optical lens
Fig. 2. Schematic of axial dispersion of binary optical lens
Fig. 3. Schematic of spectral confocal micro-spacing measurement of binary optical lens
Fig. 4. Diffraction images when image screen is at different locations from binary optical lens. (a) 20 mm; (b) 40 mm; (c) 50 mm; (d) 60 mm; (e) 80 mm
Fig. 5. Intensity distributions when image screen is at different locations from binary optical lens. (a) 20 mm; (b) 40 mm; (c) 50 mm; (d) 60 mm; (e) 80 mm
Fig. 6. Diffraction patterns under different incident light wavelengths when distances between light screen and binary optical lens are different. From top to bottom, distances between light screen and binary optical lens are 42.969, 46.610, 50.000, and 55.000 mm, respectively. From left to right, incident light wavelengths are 500, 550, 590, and 640 nm, respectively
Fig. 7. Original spectrum of spectrometer
Fig. 8. Spectra received by spectrometer at different locations
Fig. 9. Focal position of incident light with different wavelengths corresponds to axial coordinate of three-dimensional translation stage
Fig. 10. Measured optical disc
Fig. 11. Spectra of two adjacent thin films of optical disc