| Aspherical Lenses & Holders For Holography |
| Large-aperture aspherical lenses are designed for collimating, focusing, and imaging. The paraxial aberrations are completely corrected for monochromatic light. Very high image quality can be achieved for a narrow bandwidth. |
Single element
Diffraction limited
630nm to 1550nm
Use as alignment flats or for collimating
Ease of assembly
Piece to piece uniformity
Negligible birefringence
Broad environmental stability range
Applications:
Fiber communications
Optical data storage
Instrumentation
Bar-code scanners
Printers
Medical
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| You have the choice of ordering a lens by itself, a holder by itself, or a lens-and-holder combination. Lenses and lens assemblies (lens + holder) are available in relative apertures of 1/3.5, 1/4, and 1/5. When ordering a lens, please specify the relative aperture and the wavelength you need it for. |
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Lenses |
Wavefront Aberration: wavelength/8 - wavelength/2 RMS and 1 wavelength for whole aperture
Focal Length (f): +/- 3%
Diameter ( O ):~ -2.5 mm
Clear Aperture Diameter (D): >94%
Surface Quality: 80/50
Bevel: Properly bevel protected
Material: BK 7 optical glass |
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| Lens Holders |
These lens holders are designed for holding the AL-series aspheric lenses. The lens is held securely between the base frame and the backup ring. The unit features vertical and tilt adjustment, and a magnetic base for mounting to an optical table or bench. |
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Stock# |
O (mm) |
D (mm) |
ASL130 |
138.0 |
130.0 |
ASL200 |
206.0 |
200.0 |
ASL240 |
250.0 |
240.0 |
ASL300 |
308.0 |
300.0 |
ASL390 |
400.0 |
390.0 |
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Stock# |
D (mm) |
W (mm) |
H (mm) |
ASLH130 |
138.0 |
197.0 |
370.0 |
ASLH200 |
206.0 |
267.0 |
405.0 |
ASLH240 |
250.0 |
312.0 |
427.5 |
ASLH300 |
308.0 |
367.0 |
455.0 |
ASLH390 |
400.0 |
412.0 |
477.0 |
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Assembly Stock# |
Lens Stock# |
Holder Stock# |
ASLA130 |
ASL130 |
ASLH130 |
ASLA200 |
ASL200 |
ASLH200 |
ASLA240 |
ASL240 |
ASLH240 |
ASLA300 |
ASL300 |
ASLH300 |
ASLA390 |
ASL390 |
ASLH390 |
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(Assembly = Aspheric lens with holder) |
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