Help with Gradient Index Lenses specifications:
Performance
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| Focal Length | The Effective Focal Length is the distance from the lens the light converges. Focal lengths are positive for a converging system and negative for a diverging system. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| Center Thickness | The thickness of the lens at its center. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| Edge Thickness | The thickness of the lens at its edge. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
Lens Surface
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| Surface Quality: | Surface quality of the lens. | ||
| Your choices are... | |||
| 10-5 Scratch / Dig | A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 10 / 5 indicates the average diameter of the digs to be .05 mm and the average length of a scratch is .10 mm. | ||
| 20-10 Scratch / Dig | A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 20 / 10 indicates the average diameter of the digs to be .10 mm and the average length of a scratch is .20 mm. | ||
| 40-20 Scratch / Dig | A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 40 / 20 indicates the average diameter of the digs to be .20 mm and the average length of a scratch is .40 mm. | ||
| 60-40 Scratch / Dig | A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 60 / 40 indicates the average diameter of the digs to be .40 mm and the average length of a scratch is .60 mm. | ||
| 80-50 Scratch / Dig | A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 80 / 50 indicates the average diameter of the digs to be .50 mm and the average length of a scratch is .80 mm. | ||
| Other | Any other Scratch / Dig rating not listed. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| Surface Flatness: |
The surface flatness of the plate lens, given in terms of ( =633nm).
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| Your choices are... | |||
/2
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The biggest variation in surface height for the lens is no more then /2 ( =633nm).
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/4
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The biggest variation in surface height for the lens is no more then /4 ( =633nm).
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/5
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The biggest variation in surface height for the lens is no more then /5 ( =633nm).
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/8
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The biggest variation in surface height for the lens is no more then /8 ( =633nm).
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/10
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The biggest variation in surface height for the lens is no more then /10 ( =633nm).
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/20
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The biggest variation in surface height for the lens is no more then /20 ( =633nm).
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| Other | Any other surface flatness. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
Lens Features
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| Antireflection Coating | Lenses have an antireflective coating. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
| Laser / Heat Resistant | Lenses are rated for use with lasers or are heat resistant. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
| Microoptic | Suppliers describe the optic as a microoptic or miniature optic. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
| Mounted | Optics come already mounted. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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