61-6911-29 Biconcave Lens BK7 φ10mm Focal Length -19.7mm SLB-10B-20NM
特徴
- By making both sides concave, this lens can efficiently refract light in a small space and spread light widely.
- This function can be used to increase the area of illumination.
- A lens made by BK7 for the visible to near-infrared range.
- Three types of lenses with anti-reflection film are available in the visible, near-infrared and infrared ranges.
- It can be selected according to your specifications from the wide variety of subdivided by outer diameter size and focal length.
- * The concave lens cannot collect light or tie a real image by itself.
- * Use in combination with convex lenses.
- * Spherical biconcave lenses have chromatic aberration, and the focal length depends on the wavelength.
- * When a high-energy pulsed laser is used, the condensing point is connected to the optical path by the reflected light of the concave surface, and a spark may be generated.
- * When using with a pulsed laser, use a flat concave lens.
仕様
- [
common specification] - Material: BK7
- Design wavelength: 546.1nm
- Refractive index: n e＝1.519
- Coating: Reflective prevention film (400 - 700nm)
- Transmittance: > Average 99%
- Laser durability (reference value): Reflective prevention film coat 4J/cm^2 (pulse width 10ns, Repeat frequency 20Hz)
- Effective diameter: 85% of outer diameter
- Scratch - dig: 20-10
- [Individual specification]
- Reflective prevention film coat wavelength region: 400 - 700nm
- Outer diameter φD: φ10mm
- Focus distance f: ?19.7mm
- Edge thickness te: 3.2mm
- Center thickness tc: 2mm
- Back focus fb: ?20.3mm
- Curvature half diameter r: 20.76mm
- Eccentricity: ＜1′
- RoHS conform product
| Order No. | 61-6911-29 | |
|---|---|---|
| 型番 | SLB-10B-20NM | |
| 標準価格 |
JPY: 7,500
USD: 47.01
Excange rate 1USD= 159.53JPY
Valid price in Japan |
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| Quantity | 1piece | |
| Stock in Japan |
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| Supplier Stock |
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