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Resources / 應用說明 / Optics / The Benefits of Color-Corrected Optical Lenses
The Benefits of Color-Corrected Optical Lenses
Edmund Optics Inc.

The Benefits of Color-Corrected Optical Lenses

Aspheric Condenser Lenses

Minimizing the number of lenses in an optical assembly is a critical design consideration. Selecting single optical lenses that can simultaneously reduce multiple aberrations is an ideal way to achieve this goal. Color-corrected aspheric lenses, for instance, reduce both spherical and chromatic aberration, making them ideal for a range of applications where precision results and image quality are key.

Chromatic aberration occurs in conventional optical lenses when different wavelengths of light focus at different points along the optical axis, and is typically eliminated by introducing multiple lenses, fabricated from glasses with different indices of refraction, into an optical assembly. However, by eliminating chromatic aberration with color-corrected aspheric lenses, an imaging system with fewer lenses can be designed. Reducing the element count not only minimizes the size and weight of the assembly, but it also simplifies the assembly process, yielding imaging lenses that ultimately cost less and outperform assemblies made of traditional spherical optical components. For more in-depth information on chromatic aberration, please read Chromatic and Monochromatic Optical Aberrations.

Optical designers use a variety of tools to recognize, and try to correct for, aberrations. These tools often include computer generated spot diagrams and chromatic focal shift comparisons. Spot diagrams represent an estimation of the smallest spot size an optical lens can focus to. Chromatic focal shift displays the focal length of an optical lens over different wavelengths. A smaller spot size and lower degree of chromatic focal shift are the superior options. See the benefits of color-corrected optical lenses by comparing spot diagrams and chromatic focal shift graphs of TECHSPEC hybrid aspheric lenses, TECHSPEC aspheric lenses, and TECHSPEC achromatic lenses.

Select Lenses to Compare:

  Hybrid Germanium Aspheric Lens vs. Germanium Aspheric Lens
Germanium Infrared (IR) Hybrid Aspheric Lens
  • Designed for use in the 3 – 5μm infrared (IR) region
  • Near diffraction limited performance
  • Over 95% transmission
  • Ideal for use with polychromatic light sources
Germanium Infrared (IR) Aspheric Lens
  • Designed for mid-wave infrared (MWIR) and long-wave infrared (LWIR) regions
  • Diffraction limited performance
  • AR coated lenses offer over 95% transmission
  • Ideal for use with monochromatic light sources
Spot Diagram for 25mm Dia. x 25mm FL Hybrid Ge Aspheric Lens
Figure 1a: Spot Diagram for #68-262 25mm Dia. x 25mm FL Hybrid Ge Aspheric Lens
Spot Diagram for 25mm Dia. x 25mm FL Ge Aspheric Lens
Figure 1b: Spot Diagram for #68-238 25mm Dia. x 25mm FL Ge Aspheric Lens
Chromatic Focal Shift Comparison of a Hybrid Ge Aspheric Lens and a Ge Aspheric Lens
Figure 1c: Chromatic Focal Shift Comparison of #68-262 and #68-238 Aspheric Lenses
  Plastic Hybrid Aspheric Lens vs. Standard Plastic Aspheric Lens
Plastic Hybrid Aspheric Lens
  • Color corrected
  • Available uncoated or with VIS AR coating
  • Lightweight design
  • High numerical aperture
  • Ideal for use with polychromatic light sources
Plastic Aspheric Lens
  • Low autofluorescence
  • Available uncoated or with VIS or NIR AR coating
  • Lightweight design
  • High numerical aperture
  • Ideal for use with monochromatic light sources
Spot Diagram of 25mm Dia. x 25mm FL Plastic Hybrid Aspheric Lens
Figure 2a: Spot Diagram of #65-991 25mm Dia. x 20mm FL Plastic Hybrid Aspheric Lens
Spot Diagram of 25mm Dia. x 25mm FL Plastic Aspheric Lens
Figure 2b: Spot Diagram of #66-077 25mm Dia. x 20mm FL Plastic Aspheric Lens
Chromatic Focal Shift Comparison of a Plastic Hybrid Aspheric Lens Aspheric and a Plastic Aspheric Lens
Figure 2c: Chromatic Focal Shift Comparison of #65-991 and #66-077 Aspheric Lenses
  Aspherized Achromatic Lens vs. Standard Achromatic Lens
Aspherized Achromatic Lens
  • Greater color correction than standard achromatic lens
  • Corrects spherical aberration
  • Ideal for use with polychromatic light sources
Achromatic Lens
  • Color corrected doublet lens
  • Multiple AR coating options
  • Ideal for use with polychromatic light sources
Spot Diagram of 25mm Dia. x 30mm FL Aspherized Achromatic Lens
Figure 3a: Spot Diagram of #49-662 25mm Dia. x 30mm FL Aspherized Achromatic Lens
Spot Diagram of 25mm Dia. x 30mm FL Achromatic Lens
Figure 3b: Spot Diagram of #45-211 25mm Dia. x 30mm FL Achromatic Lens
Chromatic Focal Shift Comparison of an Aspherized Achromatic Lens and an Achromatic Lens
Figure 3c: Chromatic Focal Shift Comparison of #49-662 and #45-211 Achromatic Lenses
  Precision Aspherized Achromatic Lens vs. Precision Aspheric Lens
Precision Aspherized Achromatic Lens
  • Color and spherical aberration corrected aspheric lens
  • All glass doublet
  • Diffraction limited over visible spectrum
  • Low f/# designs
  • Ideal for use with polychromatic light sources
Precision Aspheric Lens
  • Spherical aberration corrected aspheric lens
  • Multiple AR coating options
  • Increased numerical aperture
  • Aberration correction similar to multi-lens system
Spot Diagram of 25mm Dia. x 25mm FL Precision Aspherized Achromatic Lens
Figure 4a: Spot Diagram of #85-302 25mm Dia. x 25mm FL Precision Aspherized Achromatic Lens
Spot Diagram of 25mm Dia. x 25mm FL Precision Aspheric Lens
Figure 4b: Spot Diagram of #47-730 25mm Dia. x 25mm FL Precision Aspheric Lens
Chromatic Focal Shift Comparison of a Precision Aspherized Achromatic Lens and a Prescision Aspheric Lens
Figure 4c: Chromatic Focal Shift Comparison of #85-302 Achromatic Lens and #47-730 Aspheric Lens
  Achromatic Lens vs. Spherical Singlet Lens
Achromatic Lens
  • Optimized to reduce spherical and chromatic aberrations
  • Ideal for use with polychromatic light sources
Spherical Singlet Lens
  • Lightweight
  • Ideal for use with monochromatic light sources
Spot Diagram of 25mm Dia. x 25mm FL Achromatic Lens
Figure 5a: Spot Diagram of #65-553 25mm Dia. x 25mm FL Achromatic Lens
Spot Diagram of 25mm Dia. x 25mm FL Plano-Convex Spherical Singlet Lens
Figure 5b: Spot Diagram of #45-098 25mm Dia. x 25mm FL Plano-Convex Spherical Singlet Lens
Chromatic Focal Shift Comparison of an Achromatic Lens and a PCX Spherical Singlet Lens
Figure 5c: Chromatic Focal Shift Comparison of #65-553 Achromatic Lens and #45-098 PCX Spherical Singlet Lens

 

As shown, the use of high performance optical lenses, such as TECHSPEC hybrid aspheric lenses, TECHSPEC aspheric lenses, or TECHSPEC achromatic lenses, can greatly improve the performance of an optical system. Using high performance optical lenses minimizes both the spot size and chromatic focal shift.

Compare spot diagrams, chromatic focal shift graphs, MTF graphs, and transverse ray fan plots to see why you need these optical lenses.

Offered uncoated or with multiple anti-reflection coating options for the UV, visible, or IR spectrum. Optical glass, crystalline, plastic, polished, or molded versions available. Buy Now!

Hundreds of stock aspheric lenses ready for purchase, available in glass, plastic, or infrared crystalline material. Don’t see what you need? We can make it.

Designing optical systems is never an easy task; even perfectly designed systems contain optical aberrations. Learn about the types of aberrations and how to correct for them.

What is an aspheric lens? In what applications are aspheric lenses used? See the answers.

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