1. The greater the relative aperture, the lens becomes "fast."

2. Research results show that the relative aperture of optical lens, the incline and defocusing of reflection plane in TV seeker optical system reduce the intensity of the "cats eye" reflection.

3. Bandwidth of amplifier and relative aperture of optical system are optimized based on the requirement of temperature resolution.

4. Effective relative aperture of the lens aperture (beam diameter) and the ratio of focal length.

5. Coupling efficiency can be maximized by optimizing the relative aperture of coupling lens.

6. The objective has high infrared transmission, large relative aperture and high resolution.

7. Towards a relative aperture of their shape, head Jan tail, eyes.

8. However, you don't expect weak quality of the maximum relative aperture, high level of chromatic aberration, significant coma and noticeable astigmatism along with huge vignetting.

9. The characteristics and design methods of WFOV and large relative aperture underwater photography objective under weak illumination are introduced.

10. Objective lens of beam expander with a high-order curved surface can correct aberration for a deep relative aperture lens.

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11. It is a key step of manufacturing the large relative aperture aspherical surface to make a breakthrough at the technology.

12. In the meantime, we analyse the main factors that is focus, relative aperture and image illuminance affect lens image quality and their relations.

13. The characteristics of the system are both large linear field of view and large relative aperture.

14. In optimized design, damped least squares method and adaptive procedure are used to get higher relative aperture, lower distortion and appropriate MTF, and so on.

15. Thermal imaging systems based on uncooled focal plane array detectors require their optical lens with a large relative aperture.