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DL-PNIR
Diameter φD
Focal length f
Edge thickness te
Center thickness tc
Back focal length fb
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By bonding two lenses with wavelength dispersion of different refractive index the resulting component will provide reduced spherical aberration and chromatic aberration than that of a single spherical lens. These achromatic lenses can be used as a focusing lens for YAG laser (1064nm) or LD of the near-infrared.

◦The lens design is optimized so that the focal length change is minimized in the near infrared region. The focal length matches at 700nm, 880nm, 1100nm wavelengths and is optimized to minimize aberrations.
◦It is suitable as a collimating lens not only because chromatic aberration but also spherical aberration is collected.

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▶For product other diameter size or focal lengths which are not listed on our website or in our catalog, please contact our Sales Division with your requests.
▶The design and manufacture of achromatic lens of other wavelength bands are available upon requested.
▶Focusing Lenses for Fiber Lasers (HFTLSQ/HFDLSQ) are also available.
W3080

Attention

▶Please use achromatic lens when focusing an image at infinity or when making parallel light from the one point of light source. It does not provide sufficient optical performance when used in such as short-range distance imaging.
▶There is a direction to the incident light parallel to the achromatic lens. A surface with a small radius of curvature is allowed to be incident parallel light from a rear surface (the surface the arrow is pointing to). When it is incident parallel light from the opposite side, spherical aberration and chromatic aberration will occur and the focused spot size will increase.
▶When used in the visible region, spherical aberration and chromatic aberration increases. In addition, the transmittance decreases.

Common Specifications
MaterialN-LAK22, SF6
Design wavelength700nm, 880nm, 1100nm
CoatingMulti-layer anti-reflection coating (700 – 1550nm)
CementUltraviolet Hardened Adhesive
Laser Damage Threshold0.3J/cm2
Surface Quality (Scratch-Dig)40-20
Clear aperture90% of actual aperture
Outline Drawing

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Schematic

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Incident direction of the parallel light

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Spec
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Part Number
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    JP Yen Stock Qty
DL-15-20PNIR
DL-15-25PNIR
DL-15-30PNIR
DL-15-50PNIR
DL-25-30PNIR
DL-25-40PNIR
DL-25-50PNIR
DL-25-100PNIR

φ15mm

19.9mm

6.6mm

9.5mm

14.7mm

<3′

φ15mm

25mm

5.8mm

8.1mm

20.6mm

<3′

φ15mm

30.1mm

5.6mm

7.4mm

26.0mm

<3′

φ15mm

50.2mm

4.9mm

5.9mm

46.8mm

<3′

φ25mm

30mm

10.8mm

16.3mm

21.4mm

<3′

φ25mm

40.1mm

9.3mm

13.2mm

32.8mm

<3′

φ25mm

50.2mm

8.5mm

11.6mm

43.8mm

<3′

φ25mm

100.4mm

7.2mm

8.7mm

95.1mm

<3′

RoHS  

¥10,500

IN STOCK
RoHS  

¥10,500

IN STOCK
RoHS  

¥10,500

IN STOCK
RoHS  

¥10,500

LOW
RoHS  

¥11,300

LOW
RoHS  

¥11,300

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US
RoHS  

¥11,300

CONTACT
US
RoHS  

¥11,300

CONTACT
US