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- Feb 25, 2010
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Build Pics #4
More progress with the " Dragon's Head "
The attached pics show the set-up for my Optical Test Bed. The LD+mount and the correction optics are shown and adjusted for optimal beam shaping. The components are now ready to be transferred over to the unit Aluminum Main Body. The black semi-circle on the front end is being used as a spatial filter to clip some very slight wings over and under the beam farfield spot. The final build will use the front end cap to accomplish this function.
I decided to go back to Acrylic for the Cylinderical Lens Holder. This is just a matter of looks. Lenses are now epoxied in to place.
The final holder design has a channel for the Plano Concave lens and a Slot for the Plano Convex. I also increased the holder thickness from .25" to .50" to better support the lenses.
See the attached pics. The beam is 11.04mm wide at 25' ( 7.62M). Much better than an uncorrected beam...which is about 125mm @ 25' !!!. At this distance the beam spot is about 9.5mm tall.
At 1250mA the output is 926mW. Just could not clear the 1W bar !!!
Sorry no better beam shots !!! I have just not mastered this talent yet !!!
In the home stretch now !!! Time to lathe some more 2" Aluminum stock to make the end caps from.
CDBEAM=======>
More progress with the " Dragon's Head "
The attached pics show the set-up for my Optical Test Bed. The LD+mount and the correction optics are shown and adjusted for optimal beam shaping. The components are now ready to be transferred over to the unit Aluminum Main Body. The black semi-circle on the front end is being used as a spatial filter to clip some very slight wings over and under the beam farfield spot. The final build will use the front end cap to accomplish this function.
I decided to go back to Acrylic for the Cylinderical Lens Holder. This is just a matter of looks. Lenses are now epoxied in to place.
The final holder design has a channel for the Plano Concave lens and a Slot for the Plano Convex. I also increased the holder thickness from .25" to .50" to better support the lenses.
See the attached pics. The beam is 11.04mm wide at 25' ( 7.62M). Much better than an uncorrected beam...which is about 125mm @ 25' !!!. At this distance the beam spot is about 9.5mm tall.
At 1250mA the output is 926mW. Just could not clear the 1W bar !!!
Sorry no better beam shots !!! I have just not mastered this talent yet !!!
In the home stretch now !!! Time to lathe some more 2" Aluminum stock to make the end caps from.
CDBEAM=======>
Attachments
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No Beam-CLens Acrylic Holder 1.JPG116.3 KB · Views: 330
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No Beam-CLens Acrylic Holder 2.JPG97.8 KB · Views: 306
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Top Veiw at 100 mW.JPG91.1 KB · Views: 379
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Ft View at 100 mW.JPG140.9 KB · Views: 372
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11.04 mm wide at 25 feet.JPG144.9 KB · Views: 376
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Operating at 600 mW.JPG89.7 KB · Views: 347
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Beam Shot with Terrawatt.JPG101.3 KB · Views: 391
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P73HH UTC 7K.JPG135 KB · Views: 388
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