In wavelength division system, left and right lenses coated with multi-layer dielectric film are applied to separate optical waves with different wavelengths and realize stereoscopic watching effect for audience. In order to satisfy audience’ visual requirements for 3D movies, left and right 3D lenses have been studied to separate visible lights of red, orange, yellow, green, cyan, blue and yellow, and realize high color resolution and better wavelength stability for left and right images after brain processing. Ta2O5 and SiO2 are used as coating materials and TFCalc software is applied to prepare two multi-bandpass filters on B270 glass through analogue simulation. The left lens after coating reaches to “R>98%” under wavelength range of 380nm, 405nm-420nm, 450nm-475nm, 530nm-560nm and 635nm-690nm and “T>;80%” under wavelength range of 390nm-395nm, 430nm-440nm, 485nm-520nm, 570nm-625nm and 700nm-780nm; while right lens after coating reaches to “R<98%” under wavelength range of 380nm-395nm, 430nm-440nm, 485nm-520nm, 570nm-625nm and 700nm-780nm and “T<80%” under wavelength range of 410nm-415nm, 455nm-470nm, 535nm-555nm and 640nm-685nm. This 3D display system is low-cost and can project 3D movies in common white screens. Besides, it is also very comfortable to wear. Therefore, such 3D glasses are expected to have better application values and practical significances.
The multi-spectral 3D display technology applies left and right lenses coated with multi-layer dielectric film to separate light waves with different wavelengths and then realize three-dimensional watching effect for audience. This paper has developed two spectral division films of 3D glasses, which are coated on left and right lenses of 3D glasses to reach “T≥85%” under waveband range of 421~438nm, 486~521nm and 575~619nm for left lens and under waveband range of 455~463nm, 540~550nm and 640~700nm for right lens and “T<1%” under waveband range of 400~415nm, 450~475nm, 535~560nm and 655~700nm for left lens and under waveband range of 405~450nm, 480~529nm and 570~617nm for right lens. The substrate cleaning technology before coating is applied to improve fastness of the film. The electron beam evaporation and ion assisted deposition system are applied to prepare films. According to test results, the filter complies with application requirements and passes through environmental test. Therefore, this 3D glasses are applicable to watch 3D movies, 3D TV, 3D games and 3D images, etc.
In this paper, we have calculated the entanglement degrees of a two-level atom in the one-dimensional photonic crystals heat reservoir, researched the effect of parameter q on the quantum entanglement degrees, and given the quantum entanglement degrees curves with time evolution. We have taken the parameter q=1, 2, 3.5 and 8.5. Our results show when the parameter q=2, keep the time of entanglement degrees near E=1 longest, it is helpful to quantum communication. Furthermore, we have designed the one-dimensional photonic crystals heat reservoir, which meet the parameter q=1, 2, 3.5 and 8.5. These can guide the fabrication of quantum devices based on photonic crystals.
To meet the requirements of 45nm node ultraviolet lithography exposure optical system with 193nm wavelength and 1.35 NA for high resolution in extremely large scale integrated circuit. A depolarizer is designed to implement high quality polarization mode lighting on mask surface. In this paper, the depolarizer in the polarization transformation module is designed and the AR film in the depolarizer is developed, combination of two wedge shaped quartz crystals with a diameter of 50±0.2mm is used to realize beam depolarization, with optical axes of two crystals are at an angle of 45 degrees in space. The front one achieves depolarization and the back one compensates optical path. The reflectivity of the prepared AR film is less than 99.5% at 193nm, this depolarizer solved a series of problems caused by the sharp reduction of focal depth due to the increase of NA and the shortening of exposure wavelength, therefore, the development of this depolarizer has certain application value.
In order to watch 3D images and videos with high color resolution and good visual effect with low cost, a new multi-spectral thin film of 3D glasses has been designed, which combines optical coating technology with 3D display technology to offset color cast at the image edge of current product, cumbersome and high cost disadvantages of glasses. Based on the principle that people can see different colors under different wavelengths and wavelength of each color changes in a range rather than a specific value, two multi-bandpass filters have been designed here. This thin film is applicable to 3D display technology, therefore, multi-bandpass filters designed here are more practical and significant.