Technology Advantages and Applications of Infrared Lens

 Infrared Lens is a rising technology with a limited range of applications. However, with the trend in security, Infrared Lens will rapidly expand.

 

infrared lenses uses special optical glass materials and modern optical design methods to eliminate the focus shift between visible light and infrared light, allowing both types of light to be imaged at the same focus point for a clear image. Currently, Infrared cameras on the market mainly use an infrared filter to switch between day and night modes. During the day, the filter blocks infrared light from reaching the CCD, enabling it to detect only visible light. At night or under poor lighting conditions, the filter stops working, allowing infrared light, reflected from objects, to enter the lens and be imaged by the CCD.

 

Advantages of Infrared Lens technology

 

However, commonly a clear daytime image becomes blurry under Infrared conditions. This is because the wavelengths of visible and infrared light differ, causing the focus point to be different which results in a blurry image. The latest optical design methods, special optical glass materials, coatings, and advanced materials eliminate the focus shift between visible and infrared light. The special optical glass material addresses the clarity issue of infrared imaging, allowing light to be focused at the same point for both visible and infrared light. Special coatings ensure that infrared light penetrates the lens while suppressing ghosting and flares in backlit conditions, providing high-quality images with high contrast, even under unfavorable backlight conditions.

Applications of Infrared Lens

Infrared Lens has a wide range of applications. It can be used as a specialized lens for Infrared purposes or as a regular lens. Infrared lenses can be easily synchronized with conventional color cameras, white cameras, and day-to-night switchable cameras, depending on the application. White cameras do not have an infrared stop filter, and the sunlight spectrum contains infrared light, so even under daylight conditions, white cameras can be affected by infrared light. Therefore, using an Infrared Lens can significantly improve image quality.

 

There are many optical lenses manufacturers, but we are the best choice for you.

 

We can also provide kinds of optical materials for sale, if you are interested, please contact us.

 

Collimating Lenses

 Custom Collimating Lenses for Precise Optical Performance

Hyperion Optics offers economical custom design laser collimating lens that can effectively correct spherical and chromatic aberrations, including singlet and chromatic lenses. Many of our clients had experiences where off-the-shelf collimators they purchased for their system do not collimate the light source perfectly, thus affecting the final system performance. To better serve clients with similar challenges when building a cost-effective system, Hyperion Optics provides free design consultation for custom collimators in both singlet and chromatic formats.

 

 

Hyperion's custom collimator lenses help parallelize the entrance light rays into your optical system setup, enabling you to control the field of view, collection efficiency, and spatial resolution. Our existing collimating lens design is responsive at UV-VIS, or VIS-NIR spectrum.

 

Affordable Aspherical Collimator Lenses for Volume Production

Aspherical collimator lens is another hot product that we offer as a cost-effective replacement for volume production. Unfortunately, brand-name aspherical lenses are not the most budget-friendly. Hyperion Optics provides reverse engineering services to help you maintain a competitive edge in the global market, oftentimes with even better system performance since our redesign aimed at optimizing the aspherical lens for your specific application. Please refer to our reverse engineering and aspherical surface production pages for more information.

 

How to Design Your Custom Laser Collimating Lens

To start with your customized collimator lens design, please verify the expected spot size and focal length of your setup:

 

For a point source, near collimation can be assumed so that the beam will be the “clear” aperture of the laser collimating lens. If a fiber is attached to the collimation lens, the divergence angle can be calculated depending on the height of the thread. This information allows you to calculate the spot size at a distance.

Tan(Theta) = (Height of fiber)/(Focal Length)

 

Focal Length = Height of fiber = (1/2)*core diameter

 

Theta = divergence angle

 

Should I choose a chromatic or singlet collimator lens?

 

For applications such as absolute irradiance, the use of achromatic lenses can offer the maximum benefits. An achromatic lens helps to eliminate the unexpected “contamination” of the spectrum caused by wavelengths outside of the optimal FOV.

 

Further, Hyperion Optics offers free consultation on your mechanical design, including lens mount, barrel, and assembly housing. Contact our technical sales team today to find out the best collimating solution for your optical system.

 

For more information about optical design manufacturing and optical materials, please feel free to contact us!

 

Beam Expander

 Beam expansion or reduction is a common application requirement in most labs using lasers or light sources and optics. Users always find there are so many off-the-shelf laser beam expanders, however, hard to find one exactly fit their needs in terms of spectral range or expansion ratio. In most cases, the plug and play solution may not be the answer.

Hyperion Optics helps customers with their unique laser expander development project, from optical design, mechanical design and responsible for the application performance. It is critical to communicate with our engineers your input and output beam diameter ratio requirement. For simple expanders, such as telescopes, consists of two lenses, the magnification of a 2 lens system is equal to the ratio of the focal lengths of the lenses, which is also equal to the ratio of the radii of curvatures of the lenses.

M= the magnification of the Beam Expander

F2= effective focal length of exit lens

 

F1= effective focal length of entry lens

 

R2= radius of curvature of exit lens

 

H2=radius of exit spot (image height)

 

H1=radius of entry spot (object height)

 

 

At Hyperion Optics, we offer rapid optical design and prototyping, in most expander cases, we offer 6 weeks delivery, means when we study your application, expansion ratio and input output parameters, we are able to deliver assembled expander within 6 weeks. Or we can work on your existing off-the-shelf solution to improve your application’s performance.

 

 

We also offer off-the-shelf expanders, please refer to following products for your requirement, or contact our engineer for further information.

 

 

For more information about hyperion laser and optical materials, please feel free to contact us!

 

 

Anamorphic Lenses

 Hyperion Optics specializes in custom anamorphic lens design and production. We are experienced in creating custom solutions for unique applications such as projection and anamorphic photography. Generally speaking, these lenses are special systems that effectively change the aspect ratios when projecting the image onto the camera sensor.

 

Compared to a more common type spherical lenses, which project images onto the sensor without causing an aspect ratio change, anamorphic lenses compress along the longer dimension and require subsequent stretching in post-production or at the projector for the output image to be properly displayed.

 

With our high quality anamorphic lenses for dslr production capability, we are able to meet the challenging and demanding anamorphic design performance, please refer to our cylindrical lens fabrication capability. Note that in some cases, custom achromatic cylindrical lenses are extremely thick in CT, and oftentimes material availability would be a manufacturing obstacle. Hyperion’s production team is able to cement singlet parts on a real-time alignment device to avoid thickness unavailability of certain materials.

 

 

Here is a great sample of how anamorphic projection lens can contribute to enhancing image quality:

We begin with a cinemascope screen. Here we’re displaying a 2.35 or 2.40 film, notice the top and bottom black bars.

 

The first step is to electronically stretch the image vertically. This process, which is crucial when using an anamorphic projection lens, is either called ‘vertical stretch’ or ‘zoom’ or ‘anamorphic mode’. The vertical stretch feature can be found in many projectors and Blu-Ray players. We have taken the active illuminated pixels in the black bars and scaled them back into the image. This process enhances the viewing experience by utilizing the full capabilities of an anamorphic projection lens to increase overall on-screen luminance or brightness. Once vertically stretched, everything on screen looks tall and skinny - compare the image below with the image above.

Finally, we take the optical expansion of the vertically stretched image to restore the geometry and to fill the entire cinemascope screen with the active image. The result below is an image that is 78% larger than the original. Now compare the top and bottom images.

 

 

 

 

 

Highlights of Hyperion Optics’ anamorphic design

 

 

 

Expected aspect ratio control

 

Sharp image quality, tested and verified MTF according to system requirements

 

Excellent achromatic feature

 

Design fit for 2.35, 2.39 and 2.4 aspect ratio

 

Theatrical cinema projection design available

ADVANTAGES OF ANAMORPHIC LENSES:

 

Anamorphic lenses takes full advantage of the performance of the projector to show a broader view and to bring about a more comfortable viewing effect.

 

Why use anamorphic lenses:

 

Anamorphic lenses can deform the projection image through the lens to meet the need of a wider screen. It allows for a wide range of scenes to be compressed into the standard frame area.

 

How the anamorphic lens works:

 

Add a set of oval compression lenses to the lens, and the film will be vertically stretched to fit the size of 35 mm. At the time of the screening, all we need to do is to use the opposite oval to magnify the lens, and we could recover the original film of 2.35:1.

The difference between spherical and anamorphic lenses:

 

1. The curvature radius of the spherical lens is the same everywhere, but the curvature radius of the anamorphic lens is different from the center to the edge of the lens; and the curvature radius of the edge is usually longer.

2. A zoom lens of multi-slice spherical lens combination can easily produce barrel distortion at the wide angle end, and pillow distortion can be easily generated at long focus end.

 

 

 

For more information about anamorphic optics and optical assembly manufacturing, please feel free to contact us!

 

We can also provide kinds of optical components for sale, if you are interested, please contact us

 

 

Dichroic Filter

 Hyperion Optics’s complete range of cost effective dichroic filter range offers superior transmission, reflection and absorption characteristics.

 

Key Features:

Sharp transition from reflection to transmission

High transmission in pass band

Hard coatings and no adhesives for long filter life span

All dielectric coated with IBS technology

Factory Standard – Contact us for manufacturing limit or custom specifications

 

Angle of Incidence: 45.0°

Shortpass Type Transmittance: Tabs>85%

Dimensions: 25.2mm*35.6mm*1.1 mm

Clear Aperture: >95%

Operating Temperature: -45°C ~ 85°C

Physical Durability: MIL-C-48497A

Longpass Type Transmittance: Tabs>90%

Reflection Band: Rabs>98%

Thickness Tolerance: ±0.1 mm

Transmitted Wavefront: 1/4λRMS@633nm (per inch)

Environmental Durability: MIL-STD-810F

Substrate: UV Grade Fused Silica

 

Dichroic optical filters consist of thin film dielectric coatings on glass and exhibit sharp transitions between transmitted and reflected wavelengths. dichroic lens are similar to traditional interference filters but differentiate themselves by reflecting all unwanted wavelengths. Consequently our dichroic range also offers minimal absorbance characteristics.

 

Our dichroic filters are available in longpass, shortpass, bandpass, bandblocking and colour correction types over a range of wavelengths. Dichroic shortpass and longpass filters can also act as hot and cold mirrors respectively.

 

Dichroic filters can divide natural light from a certain wavelength into two parts, one of which passes through, and the other is reflected or absorbed. Filters that allow longer wavelengths of light to pass through are referred to as long wave pass filters, and filters that allow shorter wavelengths of light to pass through are referred to as short wave pass filters.

 

The desired spectral range can be achieved by using different dichroic mirror.

 

For more information about optics prototyping, please feel free to contact us!

 

We can also provide kinds of optical materials for sale, if you are interested, please contact us.

 

Colored Glass Filter

 Colored Glass Filter

colored glass light filters is a performance of the color of the optical filter glass, which absorbs undesired through the band of the way, to precisely select the range of light waves to pass.

 

Tinted glass is a lower cost solution than a schott color glass filters, and tinted glass can be easily extended over a wide band. It is widely used in laser protection, industrial measurement and environmental measuring instruments.

 

For more information about custom lens design and optical materials, please feel free to contact us!

 

Bandpass Filter

 Band pass filter can separate a band of monochromatic light, the ideal transmittance of band-pass filter through the bandwidth is 100%, while the actual band-pass filter pass band is not the ideal square. The actual band-pass filter generally has a center wavelength λ0, a transmittance T0, a half width of the pass band (FWHM, a distance between two positions where the transmittance in the pass band is half the peak transmittance), the cutoff range and other key parameters to describe.

 

Band-pass filter is divided into narrow-band filter and broadband filter.

 

In general, a very narrow bandwidth or high cut-off steepness will make the product more difficult to process; meanwhile the pass band transmittance and cut-off depth is also a contradictory indicator

 

Hyperion Optics’ bandpass filter design are composed of a stack of equally spaced dielectric layers. The number of layers and thicknesses are calculated with excellent cut-off depth (typically up to OD5 or higher), better steepness and a high transmittance (70% narrowband, 90% broadband).

 

Applications:

1. Fluorescence microscopy

2. Raman fluorescence detection

3. Blood component testing

4. Food or fruit sugar detection

5. Water quality analysis

6. Laser interferometer

7. Robot welding

8. Astronomical telescope observation celestial nebula

9. Laser ranging and so on

 

For more information about optical assembly manufacturing and optical materials, please feel free to contact us!