JP3540856B2 - Sound scanner for sound film playback devices - Google Patents

Description

[0001]
[Industrial applications]
The present invention uses a continuous film feeder for films of different formats, each having a corresponding optical sound pickup device for an optical soundtrack of the relevant film format, each optical sound The pickup device comprises a light receiver and a light source, the light source having an excitation lamp and a sound optical system, and relates to a sound scanner for a sound film reproducing apparatus.
[0002]
[Prior art]
A sound film reproducing device of this type is known from DE-A 26 210 56, which corresponds to U.S. Pat. No. 4,088,399. In this case, selective reproduction of two standard width sound films, for example 16 mm and 35 mm, is performed. However, this publication does not describe the structure of a light source for an optical sound scanner.
[0003]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an arrangement of a light source which can be optimally adjusted relative to an optical sound track of a moving picture film in a sound scanner having a light source and a light receiver.
[0004]
[Means for Solving the Problems]
According to the invention, the object is achieved in that each excitation lamp is pre-adjusted in a lamp holder, said lamp holder being locked to an adjustment plate on the support of the scanner for sound, and the generated light beam being: The problem is solved by focusing on the associated optical soundtrack of the sound film by means of an eccentric arrangement which adjusts the sound optics in the direction of the optical axis.
[0005]
Advantages of the invention
An advantage of the sound-oriented scanner according to the invention having the above-mentioned characteristics is that it can be replaced quickly and easily without having to readjust each excitation lamp in order to perform a preconditioning. Yet another advantage is that the light beam from the light source can be easily focused onto the optical soundtrack of the sound film without using a large number of components.
[0006]
Claims 2 and 3 show advantageous embodiments of the sound scanner according to claim 1. It is particularly advantageous that the excitation lamp can be aligned in three dimensions.
[0007]
Next, the present invention will be described in detail based on embodiments with reference to the drawings. In the drawings, the same members have the same reference numerals.
[0008]
[Explanation of the embodiment]
In the case of the sound-oriented scanner shown in FIG. 1, the sound film is passed by the capstan 2 along the optical sound pickup device in the direction of the arrow. This optical sound pickup device includes a light source 3 and a light receiver 4 (for example, a photocell) arranged on the other side of the film 1. The light source 3 has an excitation lamp 6 and a sound optical system 7 pre-adjusted in a holder 5, by means of which an optical beam can be focused onto the optical soundtrack of the sound film 1. . The cap 8 of the excitation lamp 6 is fixed in the holder 5 such that the lamp filament 9 is arranged longitudinally in front of a notch 11 provided in a peripheral part below the holder 5. When the excitation lamp 6 is inserted into the optical sound scanner, the notch 11 engages a pin 13 which is fixed on the adjustment plate 12. In this case, the lamp filament 9 is positioned in a predetermined direction relative to the optical sound track and the slit diaphragm (not shown) arranged in the sound optical system 7 without further adjusting the rotation. And become suitable for each film used. The holder 5 of the excitation lamp 6 is locked to the adjustment plate 12 by a stop member 15.
[0009]
In order to be able to adjust the lamp filament 9 in all three dimensions relative to the plane of the slit diaphragm, i.e. both in the plane of the drawing and perpendicular to the drawing, the adjusting plate 12 is prevented from rotating. It is locked by two pins 14 and is adjustable using three adjusting screw means 16 each having a push screw 17 and a pull screw 18.
[0010]
In order to focus the light beam generated by the excitation lamp 6 on the optical sound track of the sound film 1, the sound optics 7 can be adjusted longitudinally in the direction of the optical axis by means of an eccentric device mechanism 19. The eccentric device mechanism 19 has a hole 22 provided in the box-shaped frame 21 of the sound optical system 7, and a pin (not shown) eccentrically arranged on the cylindrical rod is formed in this hole. ) Engage.
[0011]
Furthermore, the height of the sound optical system 7 can be adjusted relative to the associated optical sound track of the sound film 1 by using the adjusting screw means 23 including the push screw 24 and the pull screw 25. Two cables 26 are provided for supplying current to the excitation lamp 6.
[0012]
The light source side view in FIG. 2 shows two sound optics 7, 7 'for a film format of 16 mm and 35 mm respectively, these optics being respectively the other of the sound films 1, 1'. Is disposed to face the light receivers 4 and 4 '. Each sound optics 7, 7 'has an excitation lamp, of which the rear part of the holder 5 arranged on the individual adjustment plate 12 is shown in FIG.
[0013]
FIG. 3 shows a front view of the sound optical systems 7, 7 ', which are provided in adjusting members 27, 27'. These adjusting members 27, 27 'have sound optical system holders 28, 28', which can be adjusted in height by using adjusting screw means 23, 23 '. Have curved portions at positions 29, 29 ', respectively.
[0014]
【The invention's effect】
According to the present invention, there is provided a light source that is optimally adjustable relative to the optical soundtrack of a motion picture film in a sound scanner having a light source and a light receiver.
[Brief description of the drawings]
FIG. 1 is a plan view of a sound scanner according to the present invention.
FIG. 2 is a side view of a light source.
FIG. 3 is a front view of a sound optical system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film 2 Capstan 3 Light source 4 Receiver 5 Holder 6 Excitation lamp 7 Sound optical system 8 Cap 9 Lamp filament 11 Notch 12 Adjustment plate 13, 14 Pin 15 Stop member 16 Adjustment screw means 19, 23, 23 eccentric device mechanism

Claims (5)

A continuous film feeder is used for films of different formats, each having a corresponding optical sound pickup device for the optical soundtrack of the relevant film format, each optical sound pickup device receiving light. Comprising a vessel (4) and a light source (3), said light source having an excitation lamp (6) and sound optics (7);
In sound scanners for sound film playback devices,
Each excitation lamp (6) is preconditioned in a lamp holder (5),
The lamp holder (5) is locked to an adjustment plate (12) on the support of the sound scanner;
The generated light beam is focused on an associated optical soundtrack of a sound film by an eccentric mechanism (19) for adjusting the sound optics (7) in the direction of the optical axis.
Sound scanner for sound film playback devices. The lamp filaments (9) of the individual excitation lamps (6) have a pre-aligned position with respect to the notches (11) provided in the lamp holder (5), and the notches (11) The sound scanner according to claim 1, wherein when the excitation lamp (6) is arranged on an adjustment plate (12), it engages a fixed pin ( 13 ). The adjusting plate (12) is locked against rotation by two fixed pins (14) and the lamp filament (9) is adjustable by three adjusting screw means (16). 2. A sound scanner according to claim 1, wherein said adjusting plate (12) is three-dimensionally alignable by screw means. Each sound optic (7) is connected to the associated optical soundtrack by a separate adjusting screw means (23, 23 ') having a pull screw (25, 25') and a push screw (24, 24 '), respectively. 2. The sound scanner according to claim 1, wherein the height of the scanner is relatively adjustable. The eccentric device mechanism (19) has a hole (22) provided inside a box-shaped frame (21) in the sound optical system (7), and an eccentric pin engages with the hole. The scanner for sound according to claim 1.

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