focal length造句怎么写

Further study on thin-lens focal length measurement experiment;

This dissertation aims at meeting the needs of designing long focal length space camera.

the ratio of the focal length to the diameter of a (camera) lens system.

Measurement of optical surface and foci of long focal length lens by CGH

The results indicate that with the increase of focal length, the intensity distribution on the focal plane varies from central-dip form to Gaussian distribution.

Once you choose a lens whose focal length is closest to the focal length required by your imaging system, you need to adjust the working distance to get object under inspection in focus.

Electrically driving and controlling adaptive 128 element×128 element liquid crystal micro-lens array with tunable focal length

a camera lens having a wider than normal angle of view (and usually a short focal length).

The aperture size (area of the aperture) of a lens could be calculated from focal length and the correspondent f-number.

For example, a telescope with a focal length of 2000mm has twice the power and half the field of view of a 1000mm telescope.

In his view, such a distraction when shooting do not have to adjust the focal length, the results can determine whether the visual frame by which the camera.

How deep I should distort the building shapes by using wide angle focal length or if I should avoid it and use more close to standard values or even a telelens.

Having three focal lengths.

As a result, the focal lengths in these planes will be different.

拉开窗帘，那扑面而来的光亮，使我想到了人类的早晨。

Set the focal length on your lens.

Sturdy of large-diameter,long focal length collimator assemble technical

They have a focal length, and where an image is formed depends on a combination of the focal length and the distance between the object and the lens.

The unsteadiness of air becomes prohibitive only if instruments with large focal length are used.

The focal length of camera is estimated efficiently by using the algorithm of equidistant matching, images are warped to the surface of sphere whose radius equals to the focal length of camera.

The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.

A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.

The creative point of the paper is that the distribution of the temperature inside the laser crystal and the thermal focal length with Gauss pump source in 4-order approximation were deduced.

A focal length only half the diagonal of the film frame, produced with an almost symmetric lens design of surprising compactness, featuring the typical advantages of symmetrical lens designs: distortion is extremely well controlled, and so is color correction and image field flatness.

variable focal length (cylindrical) lens

The focal length differs with the thickness of the lens

Or, you can calculate the exit pupil by dividing the focal length of the eyepiece (in mm) by the focal ratio of the telescope.

F-number: The figures marked on the lens collar to indicate the size of the lens aperture in relation to its focal length.It is the ratio of the aperture diameter to the focal length of the lens.

If you like taking photos of birds or other wildlife, or if you’re just a peeping Tom, you can get a superzoom camera with a built-in lens with an insane focal length.

short focal length (high aperture) lens

consists of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length.

equivalent focal length

The automatic adjustment in the focal length of the lens of the eye to permit retinal focus of images of objects at varying distances.

Smaller sensors 'crop' the scene and make a lens appear to have a longer focal length.