Optically Clear Diaphragm For An Acoustic Transducer And Method For Making Same
First Claim
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1. A diaphragm for use with a mechanical-to-acoustical transducer comprising:
- (a) a layer of optically clear film;
(b) a damping layer;
(c) a layer of optically clear film;
wherein the diaphragm has a composite damping value of tan delta equal to or greater than 0.04 in the frequency range of 500 Hz to 2000 Hz at 30°
C., wherein said diaphragm has a total luminous transmittance of equal to or greater than 75%.
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Abstract
The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions.
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Citations
46 Claims
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1. A diaphragm for use with a mechanical-to-acoustical transducer comprising:
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(a) a layer of optically clear film; (b) a damping layer; (c) a layer of optically clear film; wherein the diaphragm has a composite damping value of tan delta equal to or greater than 0.04 in the frequency range of 500 Hz to 2000 Hz at 30°
C., wherein said diaphragm has a total luminous transmittance of equal to or greater than 75%.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A diaphragm for use with a mechanical-to-acoustical transducer comprising:
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(a) a layer of optically clear film; (b) a damping layer; (c) a layer of optically clear film; wherein the damping layer has a damping value of tan delta that is equal to or greater than 0.1 at said frequency range from 500 Hz to 2000 Hz at 30°
C.- View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46-70. -70. (canceled)
Specification