Dispositivos ópticos

Tamron has developed a range of high-precision lens components. The lineup includes various aspherical lens elements, thin film-coating products using special multi layer films, and ultra-high precision test plates that can quickly and accurately verify the profile irregularity of lens surfaces. In the area of test plates in particular, Tamron accepts orders to manufacture flat and spherical test plates that have been polished with skilled craftsmanship.

Test Plates

Tamron’s tests, both in spherical and flat configurations, represent the company’s spirit of craftsmanship nurtured over the course of many years. The wide array of test plates serves as solid testament to the quality control put forth at the company’s optical element production lines.

Extensive Assortment and Quick Turn-Around Time

Master Test Plates

A pair of Test Plates constitutes the master standard for curvature and/or perfect flatness.
Spherical Test Plates consist of a concave and convex pair, while Flat Test Plates are comprised of three flat plate
units.

Production Test Plates

A set of Test Plates is used for inspection of lens elements at the production line. It is
replicated from the master. As the pertinent surface sustains wear and tear and/or damage after a period of use, a
precisely replicated replacement is produced from the very same master.

Tolerance

Tamron’s Test Plates are produced in conformity with tolerances as specified below:

Test PlateDiameterAccuracy of Curvature
CurvatureTolerance
Sphericalø2.5-ø150mm<200mm
201-500mm
500mm		±0.02%
±0.03%
±0.05%
Flatø5-ø300mm∞ 

Test Plates Itemized List
This table lists the curvature and curvature precision of master test plates currently owned by Tamron.
We also manufacture master test plates, production test plates, and Δh test plates.
Note that master test plates manufactured by Tamron are built to levels of precision within the tolerance range
shown in the following curvature table.
Inquire separately if you wish other specifications.

CategoryDiameterSurface Accuracy
RadiusTolerance
Spherical Test Plates1mm-150mm<200mm±0.02%
201mm-500mm±0.03%
501mm-3000mm±0.05%
3001mm-6000mm±0.1％
6001mm-9999mm±0.2％
10000mm-19999mm±200m/m
20000mm-29999mm±300m/m
30000mm-39999mm±500m/m
> 40000mmTBD
Flat Test Plates5mm-300mm∞ 

Notes
Product curvature values were found at Tamron.
Let us know in advance if you will be confirming curvature precision at your business after product delivery.

Radius
Select the required curvature (R) from the following. (Revised May 7, 2014)

R=1.0-5.0R=61.0-70.0
R=6.0-10.0R=71.0-80.0
R=11.0-15.0R=81.0-95.0
R=16.0-20.0R=96.0-119.0
R=21.0-25.0R=120.0-169.0
R=26.0-30.0R=170.0-219.0
R=31.0-35.0R=220.0-299.0
R=36.0-40.0R=300.0-699.0
R=41.0-50.0R=700.0-1790.0
R=51.0-60.0R=1800-50000

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Test Plate Handbook

Thin Film Coating Products

Ranging from anti-reflection multiple-layer coatings to dichroic and/or metal coatings, Tamron fulfills a wealth of customer needs, including shiftless coating design and process within a tolerance of 2~3 nm. In compliance with specific requirements associated with transmissive or reflective characteristics at a given wavelength range, Tamron can deliver customized coatings from prototype sample to production stage.

Advance Coating Technologies Coupled with High Precision Polishing

Applicable dimensionsø2-ø1,000mm
Wavelength Range250-3,200nm
ProductosMultiple-Layer Anti-Reflection Coating
(On glass and/or plastic substrate),
Polarization Coating,
Non-Polarized Half Mirrors,
Dichroic Mirror/Filter, Enhanced Reflection Mirrors,
Laser Mirror, Cold Mirror/ Filters,
Low Pass Filters

 

Spherical Lens Elements

Well-founded with experienced engineers armed with advanced production equipment and measurement devices, Tamron produces a vast array of elements from diversified glass materials in different forms: plano-convex, bi-convex, convex meniscus, plano-concave, bi-concave, and concave meniscus. Diameters range from as small as 3.5mm up to as large as 200mm.

High-Accuracy Optical Elements from Initial Sample to Produce

Contour

Convex ElementsPlano-Convex, Bi-Convex, Meniscus
Concave ElementsPlano-Convex, Bi-Convex, Meni

Dimensiones

External Diametero3.5 – o200mm
CurvatureR1.5mm – ∞

Materials

Optical glass, Silica glass, Si, Ge

Precisión

 Common Gradeigh Grade
Newton Rings2 – 5 fringes1 – 2 fringes
Astigmatismo2 – 5 fringes0.2 – 0.4 lines
Diameter Tolerance± 0.02mm± 0.005mm
Angular Deviation to Axis< 1 min< 30sec.
Thickness at Center± 0.03 – ± 0.05mm± 0.01mm

 

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