LLK 3 - A new Sound Camera Based on Laser Beam Exposure

Metadata

Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 1995, No. 15, pp. 483–490
Abstract: In order to avoid the disadvantages of existing light valve cameras the new laser beam camera LLK 3 has been designed for recording of analogue tracks with high quality and long time stability. A newly designed drive control system with stepper motor enables bi-phase master and slave operation. In addition it offers the fast and easy implementation of already existing digital recording systems like DOLBY SR-D or DTS. The sound drum of the camera is fitted with a high definition incremental tacho unit which is used for synchronizing the laser beam scanner and the DSP system. The DSP unit takes care of the audio processing and switches the laser beam on and off by means of an acousto-optical deflector. The deflection system works completely without mechanically moved elements, therefore no mechanical resonance has an impact on the frequency response. All important adjustments like track position, exposure intensity, frequency response etc. can be programmed by means of a microcontroller. As the He-Ne Laser is operated at a low intensity level the long term stability and reliability is evident. A sophisticated monitoring system offers unique features such as simultaneous reproduction of the audio signal derived directly from the laser beam via a beam splitter. An ocular in connection with a rotating polygon mirror can be used for viewing the beam recording. Besides the two channel analogue input a digital audio input (AES/EBU-48 kHz) for direct transfer from digital systems is also available. The digital audio processing offers additional possibilities like the recording of special test and control signals or direct simultaneous recording of the DTS-Control signal, etc. The basic recorder model works without PC monitor and keyboard and is controlled only with conventional keys.
Publication Date: 1995-09-01
DOI: 10.5594/M00515
Link: https://doi.org/10.5594/M00515
Author(s): J. P. MönchOptronik GmbH Potsdam/Germany
J. RistowOptronik GmbH Potsdam/Germany
P. StroetzelW. AIbrecht Studiogeräte GmbH Berlin/Germany
Copyright: © 1995 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Recording of Variable-Area Soundtracks Using a Laser Light-Modulating Device [Active]
A High-Quality Optical Sound Recording System Using a Scanned Laser Beam [Active]
Applications of Laser Technology to Photographic Optical Sound Recording [Active]
Characteristics of the Photophone Light-Modulating System [Active]
The Principles of the Light Valve [Active]
The RCA Recording System and Its Adaptation to Various Types of Sound-Track [Active]
/1/ Lichte H. Narath A. , Physik und Technik des Tonfilms , S. Hirzel Verlag , Leipzig , 1945 . EXTERNAL
/10/ Image Technology , Oct. 1992 , p. 158 . EXTERNAL
/11/ Enz K. , Fernseh- und Kinotechnik 45 ( 1991 ) 1 , 30 – 37 . EXTERNAL
/12/ Gainsborough J. , Cinema Technology Oct. 1992 , p 138 – 139 . EXTERNAL
/13/ Cinema Technology Jan. 1992 , p 98 . EXTERNAL
/3/ Tykocinski-Tykociner J. , Journal of SMPE 6 ( 1923 ) 1 , 90 – 119 . EXTERNAL
/9/ Zoller H. P. , Fernseh- und Kinotechnik 42 ( 1988 ) 7 , 323 – 326 . EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-M00515.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

J. P. Mönch, J. Ristow, and P. Stroetzel; LLK 3 - A new Sound Camera Based on Laser Beam Exposure, SMPTE Meetings and Conferences ( September 1995); SMPTE, 1995. Available at https://doi.org/10.5594/M00515

Snippet:

J. P. Mönch, J. Ristow, and P. Stroetzel; LLK 3 - A new Sound Camera Based on Laser Beam Exposure, SMPTE Meetings and Conferences ( September 1995); SMPTE, 1995. Available at https://doi.org/10.5594/M00515

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">J. P. Mönch, J. Ristow, and P. Stroetzel; <cite>LLK 3 - A new Sound Camera Based on Laser Beam Exposure</cite>, SMPTE Meetings and Conferences ( September 1995); SMPTE, 1995. Available at <a href="https://doi.org/10.5594/M00515" target="_blank" rel="noopener">https://doi.org/10.5594/M00515</a></span>

SMPTE's HTML Pub

Preview:

J. P. Mönch, J. Ristow, and P. Stroetzel; LLK 3 - A new Sound Camera Based on Laser Beam Exposure, SMPTE Meetings and Conferences ( September 1995); SMPTE, 1995
doi: 10.5594/M00515
url: https://doi.org/10.5594/M00515

Snippet:

<li>
J. P. Mönch, J. Ristow, and P. Stroetzel; <cite id="bib-10-5594-m00515">LLK 3 - A new Sound Camera Based on Laser Beam Exposure</cite>, SMPTE Meetings and Conferences ( September 1995); SMPTE, 1995
<span class="doi">10.5594/M00515</span>
</li>