-
公开(公告)号:US3720784A
公开(公告)日:1973-03-13
申请号:US3720784D
申请日:1971-02-12
Applicant: BELL TELEPHONE LABOR INC
IPC: B23K26/08 , B41M5/24 , G03B15/00 , G03C9/00 , G09G3/00 , G11B7/241 , H04N1/23 , H04N5/76 , G11B7/00 , G11B11/02
CPC classification number: H04N5/76 , B23K26/0821 , B23K26/361 , B23K26/389 , B23K26/40 , B23K2203/42 , B23K2203/50 , G03B15/00 , G03C9/00 , G09G3/002 , G09G3/025 , G11B7/241 , G11B7/2535 , H04N1/23
Abstract: An image comprising a multitude of small discrete holes is formed by a laser in a radiation absorbing film. Appropriate means form a large number of brief-duration, amplitude-modulated pulses of optical radiation. These pulses are then deflected and focused to form an array of discrete holes in a film, such as a 500 Angstrom thick layer of bismuth, on a polyester substrate. By varying the energy in each pulse, the size of the holes can be varied to form images having a gray scale.
Abstract translation: 通过激光在辐射吸收膜中形成包括多个小离散孔的图像。 适当的手段形成了大量的短时间,幅度调制的光辐射脉冲。 然后这些脉冲被偏转和聚焦,以在聚酯基底上形成薄膜(例如500埃厚的铋层)中的离散孔阵列。 通过改变每个脉冲中的能量,可以改变孔的尺寸以形成具有灰度级的图像。