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    • 8. 发明授权
    • Method for producing a hologram and a display device using the same
    • 制造全息图的方法和使用该全息图的显示装置
    • US06198554B1
    • 2001-03-06
    • US08741175
    • 1996-10-29
    • Tomoyuki KandaKazutoshi KoieKatsuyoshi NishiiMasahiro ShiozawaKatsumi KamiyaAtsuo Ishizuka
    • Tomoyuki KandaKazutoshi KoieKatsuyoshi NishiiMasahiro ShiozawaKatsumi KamiyaAtsuo Ishizuka
    • G03H102
    • G02B5/32G03H1/0256G03H1/04G03H1/0404G03H1/0486G03H1/22G03H1/265G03H1/28G03H2001/2239G03H2001/306G03H2223/14G03H2240/51G03H2240/53G03H2250/32G03H2260/10H04N7/144
    • A method for producing a hologram recording an interference fringe formed by an object light and a reference light on a photosensitive dry plate, and the object light either having diffusing and scattering characteristics or being passed through an optical diffusion body, mainly includes the following steps: In a first step, a ratio &eegr;RO/&eegr;OO of a first diffraction efficiency &eegr;OO and a second diffraction efficiency &eegr;RO, is calculated. The diffraction efficiency &eegr;OO is dependent on two object light beams. The efficiency &eegr;RO is dependent on the object light and the reference light. In a second step, the intensity EO of the object light and the intensity ER of the reference light is adjusted in such a way that the ratio &eegr;RO/&eegr;OO is set to at least 10 and the efficiency &eegr;OO does not exceed 5%. A display device using the above hologram is structured by a display unit for generating a signal light; a hologram screen formed by either reflection or transmission hologram, and a projecting unit for projecting the signal light to the hologram screen. According to the present invention, it is possible to easily produce a hologram, for example, a screen hologram, having no cloudiness or cloudy state when an observer observes an image displayed on the screen, and to a display device using the above hologram screen.
    • 一种用于产生记录由感光干板上的物体光和参考光形成的干涉条纹的全息图的方法以及具有漫射和散射特性或通过光漫射体的目标光主要包括以下步骤: 在第一步骤中,计算第一衍射效率etaOO和第二衍射效率etaRO的比率ηηRO/ eta。 衍射效率etaOO取决于两个物体光束。 效率etaRO取决于物体光和参考光。 在第二步骤中,调整对象光的强度EO和参考光的强度ER,使得etaRO / eta00的比率设定为至少10,效率etaOO不超过5%.A显示 使用上述全息图的装置由用于产生信号光的显示单元构成; 通过反射或透射全息图形成的全息屏幕和用于将信号光投射到全息屏幕的投影单元。根据本发明,可以容易地生成全息图,例如没有浑浊的全息图 或观察者观察屏幕上显示的图像时的混浊状态,以及使用上述全息图的显示装置。