piferal
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- Apr 5, 2011
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Hello LPF members.
First of all, apologize for my "approximate" English
Update: On November 26 I added 12 more photos
I had not put any macro photography of laser diodes for a while, and because I renewed my gear a little, I take the opportunity to
show you all at the best as possible one of my lasers diodes, which in this case is an small 405nm diode with an integrated photodiode.
I wanted to explain a little, for people that would be interested, about the depth of field "DOF" mentioned above in the title,
and so that you have a small idea about the difficulty to work with. Also the Lighting, vibrations, and others, are also a big
problems when working at this scale and distance, but this is another story
At these magnifications and distance (only at 4mm from the object, approx), the depth of field is ridiculous, so much so that to
view this chip entirely sharp (focused), are required about 22 stacked photos, or more (at least with the material that I have,
which is nothing specialized, because is in part home DIY).
The first three photos are, the complete laser diode, and laser diode chip measures, for reference.
To have a little idea of what has been said above about the depth of field, an example,
the next photo is as you can see the chip with a single shot.
Next is the same photo as above, but stacking 23 photos with a different focal length for each.
The rest of the photos are taken from different angles and magnifications.
On 26 November I added 12 more photos, this time with more magnification for a closer look,
and some of these with shallow depth of field, to highlight particular areas of the diode.
And this is all for now.
Thanks for visit :yh:
First of all, apologize for my "approximate" English
Update: On November 26 I added 12 more photos
I had not put any macro photography of laser diodes for a while, and because I renewed my gear a little, I take the opportunity to
show you all at the best as possible one of my lasers diodes, which in this case is an small 405nm diode with an integrated photodiode.
I wanted to explain a little, for people that would be interested, about the depth of field "DOF" mentioned above in the title,
and so that you have a small idea about the difficulty to work with. Also the Lighting, vibrations, and others, are also a big
problems when working at this scale and distance, but this is another story
At these magnifications and distance (only at 4mm from the object, approx), the depth of field is ridiculous, so much so that to
view this chip entirely sharp (focused), are required about 22 stacked photos, or more (at least with the material that I have,
which is nothing specialized, because is in part home DIY).
The first three photos are, the complete laser diode, and laser diode chip measures, for reference.
To have a little idea of what has been said above about the depth of field, an example,
the next photo is as you can see the chip with a single shot.
Next is the same photo as above, but stacking 23 photos with a different focal length for each.
The rest of the photos are taken from different angles and magnifications.
On 26 November I added 12 more photos, this time with more magnification for a closer look,
and some of these with shallow depth of field, to highlight particular areas of the diode.
And this is all for now.
Thanks for visit :yh:
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