Germanium Windows11

In the range of 2-12 μm, germanium is the most commonly used material for the production of spherical lenses and windows for high efficiency infrared in imaging system. Germanium has a high refractive index (about 4.0 through 2-14μm band), usually do not need to be modified due to its low chromatic aberration in low power imaging systems. Hyperion Optics utilizes precision double polishers to produce Germanium windows at competitive pricing. We strictly control every critical parameter at different processing stages, such as surface accuracy and every physical dimension to meet tolerance requirement. We provide special power controlled windows i.e. one surface with low power, while polish the other side with high power ring. Please talk to one of our technicians for further information. Germanium Windows COMMERCIAL GRADE FACTORY STANDARD PRECISION GRADE Diameter Tolerance(mm) +0/-0.05 +0/-0.03 +0/-0.025 Center Thickness(mm) ±0.01 ±0.03 ±0.025 Parallelism (Arc min) 6 <3 <1 Cosmetic(MIL-C-13830A) 100-80 40-20 20-10 Figure Tolerance inλ(Pow/irreg) 5 - 2 2 - 1 1 - 1/4 Coating (T% avg) 96% @ 3-5um/7-14um.    95% @ 4-12um Materials Optical Grade Germanium Aside of conventional Germanium window products, Hyperion Optics provides Ultra-thin germanium uncoated substrates for coating application. Upon custom requirement, we are able to fulfill as thin as 0.20-0.31 mm in center thickness, diameter as small as 3-5mm. Outer diameter special treatment is also available upon request, with extreme precise control of beveling <0.1mm for each face. Our Ultra-thin products are measured 100% individually to secure quality. Check our Ultra-thin category inventory list to match your potential demand. Ge Ultra-thin Windows Diameter Tol (mm) Center Thickness(mm) Power (Lambda) Cosmetic Bevel(mm) Chips(mm) Dia 6 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 8 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.10 <0.10 Dia 9.5 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.15 <0.10 Dia 11 mm +0/-0.05 1.00±0.02 <1 L 40/20 <0.10 <0.10 Dia 12 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 12 mm +0/-0.05 0.20±0.02 <1 L 40/20 <0.10 <0.10 Dia 12 mm +0/-0.05 0.29±0.02 <1 L 40/20 <0.20 <0.10 Dia 15 mm +0/-0.05 1.00±0.02 <1 L 40/20 <0.20 <0.10 Dia 15 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.20 <0.10 Dia 18 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 21 mm +0/-0.05 1.00±0.03 <1 L 40/20 <0.20 <0.10

When a specimen is viewed through a microscope it is easiest to begin viewing the slide under a lower magnification to get a broad view. This helps the operator determine where to center the slide in order to select a higher magnification. For this reason, it is ideal for the objectives to be oriented in such a way that the slide remains in focus when switching to a higher or lower magnification level.

Most professional microscopes contain multiple objective lenses on a rotating nosepiece to facilitate a quick change in the magnification of a slide specimen. Parfocal lenses are those that are oriented in such a way that the specimen remains in focus as the objectives are rotated into place.

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Germaniumlens

In the range of 2-12 μm, germanium is the most commonly used material for the production of spherical lenses and windows for high efficiency infrared in imaging system. Germanium has a high refractive index (about 4.0 through 2-14μm band), usually do not need to be modified due to its low chromatic aberration in low power imaging systems.

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Hyperion Optics utilizes precision double polishers to produce Germanium windows at competitive pricing. We strictly control every critical parameter at different processing stages, such as surface accuracy and every physical dimension to meet tolerance requirement. We provide special power controlled windows i.e. one surface with low power, while polish the other side with high power ring. Please talk to one of our technicians for further information.

FTIRwindows

Microscopes tend to have two types of lenses: Ocular and Objective. The ocular lens is the one in the eyepiece that the user looks through, and the objective lenses are those that are located on the rotating nosepiece. Images are focused by using the focus knobs. A typical lens set involves a 10x ocular lens, or one that magnifies the image ten times, and objective lenses that range from 4x to 100x, for a total magnification range of 40x to 1000x.

Aside of conventional Germanium window products, Hyperion Optics provides Ultra-thin germanium uncoated substrates for coating application. Upon custom requirement, we are able to fulfill as thin as 0.20-0.31 mm in center thickness, diameter as small as 3-5mm. Outer diameter special treatment is also available upon request, with extreme precise control of beveling <0.1mm for each face. Our Ultra-thin products are measured 100% individually to secure quality. Check our Ultra-thin category inventory list to match your potential demand.

Schorr, Ryan. Why Is It Desirable That Microscope Objectives Be Parfocal? last modified March 24, 2022. https://www.sciencing.com/why-is-it-desirable-that-microscope-objectives-be-parfocal-12742456/

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To determine if a microscope has parfocal objectives, a slide should be brought into focus using the highest magnification settings. The operator should then switch to an objective with a lower magnification level to check for sharpness of focus on the slide. If the slide remains in focus with very little adjustment, the objectives are parfocal; conversely, if the slide is not focused, the objectives are not parfocal. It is important to start with the most powerful objective because it has the narrowest range of focus.

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Schorr, Ryan. "Why Is It Desirable That Microscope Objectives Be Parfocal?" sciencing.com, https://www.sciencing.com/why-is-it-desirable-that-microscope-objectives-be-parfocal-12742456/. 12 November 2009.

Light your subject in 850nm infrared light with this zoom-able telescopic IR flashlight. IR light beam is invisible to the human eye and non IR sensitive.

Germanium Windows COMMERCIAL GRADE FACTORY STANDARD PRECISION GRADE Diameter Tolerance(mm) +0/-0.05 +0/-0.03 +0/-0.025 Center Thickness(mm) ±0.01 ±0.03 ±0.025 Parallelism (Arc min) 6 <3 <1 Cosmetic(MIL-C-13830A) 100-80 40-20 20-10 Figure Tolerance inλ(Pow/irreg) 5 - 2 2 - 1 1 - 1/4 Coating (T% avg) 96% @ 3-5um/7-14um.    95% @ 4-12um Materials Optical Grade Germanium

A specimen is prepared on a slide and placed on the stage, the horizontal platform directly under the objective lenses. Light is projected up through the stage and into the objective to illuminate the specimen. The coarse and fine focus knobs are then used to bring the image into its sharpest possible view.

Germanium Windows12

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Ge Ultra-thin Windows Diameter Tol (mm) Center Thickness(mm) Power (Lambda) Cosmetic Bevel(mm) Chips(mm) Dia 6 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 8 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.10 <0.10 Dia 9.5 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.15 <0.10 Dia 11 mm +0/-0.05 1.00±0.02 <1 L 40/20 <0.10 <0.10 Dia 12 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 12 mm +0/-0.05 0.20±0.02 <1 L 40/20 <0.10 <0.10 Dia 12 mm +0/-0.05 0.29±0.02 <1 L 40/20 <0.20 <0.10 Dia 15 mm +0/-0.05 1.00±0.02 <1 L 40/20 <0.20 <0.10 Dia 15 mm +0/-0.05 0.49±0.02 <1 L 40/20 <0.20 <0.10 Dia 18 mm +0/-0.05 0.31±0.02 <1 L 40/20 <0.15 <0.10 Dia 21 mm +0/-0.05 1.00±0.03 <1 L 40/20 <0.20 <0.10

"Parfocal" is a term that literally means "side-by-side focus." All of the objective lenses in a parfocal microscope have focal points that are all in the same plane. Parfocality is not limited to microscopes; it can also refer to lenses used in telescopes or photography.

Schorr, Ryan. (2009, November 12). Why Is It Desirable That Microscope Objectives Be Parfocal?. sciencing.com. Retrieved from https://www.sciencing.com/why-is-it-desirable-that-microscope-objectives-be-parfocal-12742456/