Secondary Focusing Lens Assemblies focus the collimated beam from a condensing lens assembly and create an image of the arc or filament one focal length away. They consist of a fused silica, plano convex lens and a flanged lens holder. The flanged lens holder can be purchased separately if the lens offered in each Focusing Lens Assembly is not suitable for the intended application. Each flanged lens holder has male and female flange compatible with the Oriel flanging system and a 1/4 - 20 threaded hole for mounting with an Optical Rod. Three Secondary Focusing Lens Assemblies are offered: model 6199: 1.5 inch flange, 6 inch Focal Length, F/4, 1.3 in. clear aperture; model 66110: 1.5 inch flange, 2 inch Focal Length composed of two lens elements, F/1, 1.3 in. clear aperture; model 6219: 2 inch flange, 6 inch Focal Length, F/3.3, 1.8 in. clear aperture. The flanged lens holders sold separately are: PN 6195: 1.5 inch flanged lens holder, which holds 1.5 inch optics; PN 6222: 2 inch flanged lens holder, which holds 2 inch optics; PN 6237: 3 inch flanged lens holder, which holds 3 inch optics.

Choose products to compare anywhere you see 'Add to Compare' or 'Compare' options displayed. Compare All Close

2. The field angle is proportional to the effective imaging size of the sensor. The higher the effective imaging height of the sensor, the larger the vertical field angle, the wider the effective imaging width of the sensor, and the larger the horizontal field angle.

The larger the field angle is, the larger the field of view is, and the smaller the optical magnification is. Generally speaking, if the target object exceeds this angle, it will not be collected in the lens. The field angle is divided into horizontal field angle, vertical field angle and diagonal field angle.

Lensedfiber

● Wide angle lens: the viewing angle is more than 90 degrees, the observation range is large, and the near image is deformed.

How to collimate light from afiber

Yes, opt-in.  By checking this box, you agree to receive our newsletters, announcements, surveys and marketing offers in accordance with our privacy policy

As the golden eye of the whole monitoring system, the camera is responsible for keeping an eye on all the details of the monitoring occasions. Its "vision" is very important. Now, Xiaojin will briefly introduce some tips about the camera's field of view angle:

Focusing Lens Assemblies expand the versatility of Oriel® Light Sources. These products are useful for converting light sources from a collimated output to a fiber optic source or light source with a focused spot size output.

Edmund Optics LED

Focusing Lens Assemblies expand the versatility of Oriel® Light Sources. These products are useful for converting light sources from a collimated output to a fiber optic source or light source with a focused spot size output.

Fiber Bundle Focusing Assemblies include a focusing lens, manual shutter, and fiber bundle holder contained into a single enclosure. These assemblies have a 1.5 inch male flange for easy coupling to Oriel Research Lamp Housings and have a 1/4-20 threaded hole on the bottom of the housing for mounting with an Optical Rod. A thumbscrew allows positional adjustment of a fiber bundle of light guide within 1 mm. These assemblies are designed to enclose light guides and fiber bundles with standard Oriel 11 mm ferrule termination. Three different Fiber Bundle Focusing Lens Assemblies are offered: 77799 : Contains f/0.85 Aspheric Pyrex lens, should be used with glass Fiber Bundles and Liquid Light Guides 77776 : Contains f/2.2 Fused Silica lens, should be used with fused silica fiber bundles and single core fibers 77800 : Contains f/2 Plano Convex lens, should be used with fused silica fiber bundles and liquid light guides Aspheric lens such as those used in the 77776 and 77799 are designed for less aberration than plano convex lenses, therefore providing better spot size uniformity. The typical spot size diameter for each light guide is: 77799 : 4 mm 77776 : 800 µm 77800 : 4 mm These spot sizes were measured by re-imaging the arc with each Focusing Assembly formed by a 75 W Xe Arc Lamp (arc size 0.25 mm x 0.25 mm) collimated by an f/1.5 condensing lens.

These spot sizes were measured by re-imaging the arc with each Focusing Assembly formed by a 75 W Xe Arc Lamp (arc size 0.25 mm x 0.25 mm) collimated by an f/1.5 condensing lens.

FiberCollimator

Fiber Bundle Focusing Assemblies include a focusing lens, manual shutter, and fiber bundle holder contained into a single enclosure. These assemblies have a 1.5 inch male flange for easy coupling to Oriel Research Lamp Housings and have a 1/4-20 threaded hole on the bottom of the housing for mounting with an Optical Rod. A thumbscrew allows positional adjustment of a fiber bundle of light guide within 1 mm. These assemblies are designed to enclose light guides and fiber bundles with standard Oriel 11 mm ferrule termination. Three different Fiber Bundle Focusing Lens Assemblies are offered:

Secondary Focusing Lens Assemblies focus the collimated beam from a condensing lens assembly and create an image of the arc or filament one focal length away. They consist of a fused silica, plano convex lens and a flanged lens holder. The flanged lens holder can be purchased separately if the lens offered in each Focusing Lens Assembly is not suitable for the intended application. Each flanged lens holder has male and female flange compatible with the Oriel flanging system and a 1/4 - 20 threaded hole for mounting with an Optical Rod. Three Secondary Focusing Lens Assemblies are offered: model 6199: 1.5 inch flange, 6 inch Focal Length, F/4, 1.3 in. clear aperture; model 66110: 1.5 inch flange, 2 inch Focal Length composed of two lens elements, F/1, 1.3 in. clear aperture; model 6219: 2 inch flange, 6 inch Focal Length, F/3.3, 1.8 in. clear aperture. The flanged lens holders sold separately are: PN 6195: 1.5 inch flanged lens holder, which holds 1.5 inch optics; PN 6222: 2 inch flanged lens holder, which holds 2 inch optics; PN 6237: 3 inch flanged lens holder, which holds 3 inch optics.

LinkedIn and 3rd parties use essential and non-essential cookies to provide, secure, analyze and improve our Services, and to show you relevant ads (including professional and job ads) on and off LinkedIn. Learn more in our Cookie Policy.

1. The field angle is inversely proportional to the lens focal length. Generally, the larger the lens focal length is, the smaller the field angle is.

The area covered by the visible image formed by the subject through the lens on the focal plane is the field of view of the lens, which is represented by the angle between the two sides of the display and the eye line.

Field of view (FOV for short) refers to the range that can be covered by the lens (objects beyond this angle will not be collected in the lens). The range that a camera lens can cover is usually expressed in terms of angle, which is called the FOV of the lens. Generally speaking, the angle formed by the limit of the range you can see by rotating your eyes while keeping your head still in front of the screen is called the field angle.

Select Accept to consent or Reject to decline non-essential cookies for this use. You can update your choices at any time in your settings.

Aspheric lens such as those used in the 77776 and 77799 are designed for less aberration than plano convex lenses, therefore providing better spot size uniformity. The typical spot size diameter for each light guide is: