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Unbenanntes Dokument
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Optics
Set Mini |
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for
7"-8" TFT
Mini DIY projector |
| Product
informations |
Including:
-
high-value Vario-Focus objective
The lens has an adjustable focal length of 285-330
mm. The same lens is used by 3M in the upper class of the overhead
projectors (from EUR 1000.-). Settles colour errors (chromatic
abberation) and makes the housing clearly smaller (no more telescope
construction necessarily).
Light collecting aperture: 50 mm
Projection apperture: 40 mm
- special positive-positive fresnel lens
Size: 200x200 mm (for displays 5.6" until 8"), cutable.
The fresnel lens has a fine facet spacing of 0.40 mm, spilt in stable
acryl, for higher temperatures. The lens is obviously divisible
into two single fresnel lenses, what leads also to a small
light profit.
Focal lenghts:
+160 mm for first lens
+305 mm for second lens
- professional glass reflector (cold mirror)
Consists of glass and a fine aluminum layer on
the inside. Very temperature steady. Diameter: 50 mm. Depth: 18
mm.
Distance to HQI: 1.00 mm
- big glass condensor lens
The condensorlens has a large diameter of 90 mm, therefore also
for larger light source relatedly (HQI). The convex lens has a very
large retirement angle. Very temperature steady.
Focal length: F=+240 mm
Distance to HQI: 23.85 mm
This articles are tuned on each other.
Reflector + 1mm to HQI + 23.85mm to condensor + 136.15mm to fresnel
+ 285 to 330mm to objective |
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