 Phthalocyanine compounds |
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| Cyan ink formulation |
| OF THE INVENTION The invention described herein is directed to a cyan ink particularly suitable ... |
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| Compounds, compositions and uses |
| What is claimed is: 1. A compound of Formula (1) and salts thereof: ##STR9## wherein: M is 2H, Si, ... |
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| Multimeric dye structures |
| OF THE PREFERRED EMBODIMENT(S) Before the present invention is disclosed and described, it is to ... |
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| Wear-resistant sintered ferrous alloy and method of producing same |
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| Mechanical fuse for reciprocating roller chain |
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| Sintered machine part and method |
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| Pneumatic isostatic compaction of sintered compacts |
| OF THE INVENTION Densified sintered metal compacts are made by the process described hereafter. I... |
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| Refrigerating compressor with breakaway pulley portion |
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| Power steering system having a mechanical safety breaker |
| We claim: 1. A power steering system for assisting steering operation of a manual steering system ... |
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Laser heater assembly
| Details |
Inventors: Best, Bryant A.; Mahoney, William G.;
Assignee: Scientific-Atlanta, Inc. (Lawrenceville, GA)
Primary Examiner: Leung; Philip H.
Assistant Examiner:
Attorney, Agent or Firm:
A heated laser assembly for maintaining a set point temperature of a laser. A common transistor external to the laser is positioned in thermal proximity to the laser. A thermal transfer member is positioned in thermal contact between the laser and the transistor. The transistor heats the thermal transfer member, and thus heats the laser, when the ambient temperature drops below a set point temperature. Therefore, the overall temperature range the laser must operate over is reduce through the use of a common transistor. |
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DETAILED DESCRIPTION The present invention will be described more fully hereinafter with reference to the accompanying drawings in which like numerals represent like elements throughout the several figures, and in which an exemplary embodiment of the invention is shown.
This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, the embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The present invention is described more fully hereinbelow.
FIG.
1 illustrates one embodiment of a thermoelectric heater assembly 10 of the present invention.
The heater assembly 10 of FIG.
1 is utilized, for example, in a CATV node as a coarse wave division multiplexing (CWDM) reverse transmitter 12 as shown in FIG.
2.
The transmitter 12 includes a top cover 14 and a bottom cover 16 for housing a transmitter printed circuit board 18 with fiber optic cable having a fiber connector 20.
However, the heater assembly 10 may be implemented as part of other laser designs where it is desirable to reduce the overall temperature range that a laser must efficiently operate at and where an economical solution is desired.
FIG.
3 illustrates an exploded view of the heater assembly 10 of FIG.
1.
One embodiment of the present invention allows the heater assembly 10 to be a plug-in type modular assembly which can be used with many different frequency lasers for different applications.
The heater assembly 10 includes a laser 22 adapted to be electrically and mechanically coupled to a laser printed circuit board 24 as shown in FIG.
1.
The heater assembly 10 also includes a heating element or heater such as heater transistor 30 which is also electrically and mechanically coupled to the circuit board 24.
A thermal transfer member or heat sink, such as a metal plate or block 40, is positioned in between the mounted laser 22 and heater transistor 30 as best shown in FIG
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Manufacturing Materials 
