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公开(公告)号：US4510575A
公开(公告)日：1985-04-09
申请号：US410901
申请日：1982-08-24
CPC分类号： G03H1/0891 , G03H1/08 , Y10S359/90
摘要： A micro graphic representation such as a hologram is formed by directing from a computer to a display surface signals to form a very small portion of the graphic representation of the display surface, focusing a micro image of the display on a recording element, mechanically moving the recording element to a new position, optically measuring the new position and signalling the computer the precise new position and then sending to the display surface next signals to form on the display surface a next very small portion of the graphic representation with the position of the next portion modified to compensate for the difference between the measured position and the required position. The piece-by-piece display is repeated a large number of times to record an entire graphic representation. One embodiment of the invention is a hologram writer.
摘要翻译： 通过从计算机引导到显示表面来形成诸如全息图的微图形表示信号以形成显示表面的图形表示的非常小的一部分，将显示器的微观图像聚焦在记录元件上，机械地移动 记录元件到新位置，光学测量新位置并向计算机发送精确的新位置，然后向显示表面发送下一个信号以在显示表面上形成下一个非常小的图形表示部分，其中下一个位置 部分修改以补偿测量位置和所需位置之间的差异。 逐个显示重复了很多次，以记录整个图形表示。 本发明的一个实施例是全息图写入器。
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公开(公告)号：US4416538A
公开(公告)日：1983-11-22
申请号：US328021
申请日：1981-12-07
IPC分类号： G03B27/54
CPC分类号： G03B27/542
摘要： Image enhancement is achieved to increase the ability to distinguish details otherwise difficult to discern in bright and dark areas of a photorecord by reflecting light off surface perturbations on the record and displaying the reflected light by means of schlieren optics.
摘要翻译： 实现图像增强以增加区分细节的能力，否则在光记录的明暗区域难以辨别，通过反射光在记录上的表面扰动并通过色彩光学显示反射光。
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公开(公告)号：US4804249A
公开(公告)日：1989-02-14
申请号：US946248
申请日：1986-12-24
CPC分类号： G02B27/46 , G02B27/0025
摘要： An optical filter for use with an imaging lens in an incoherent imaging system operating in broadband illumination for increasing the depth-of-focus of the lens while maintaining energy thru-put is disclosed. The optical filter comprises a transparent support having on one surface thereof an array of transparent, discrete steps of substantially equal size, each step having a thickness that differs from all other steps by at least the coherence length of the radiation to be passed and the size of the array being equal to the size of the lens. In use, the optical filter is positioned in front of the imaging lens. When so positioned, the depth of focus of the imaging lens is proportional to the size of the individual steps rather than the size of the lens while the energy thru-put of the imaging remains the same as it would be without the optical filter.
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