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Single-display-shared large-exit-pupil binocular eyepiece optical system

An optical system and binocular eyepiece technology, applied in the field of optics, can solve the problems that the eyepiece of the instrument deviates from the position of the pupil of the observer, cannot see the display image, and observes the adverse effects of use, etc., and achieves convenient use, comfortable observation, and reliable performance. Effect

Inactive Publication Date: 2015-08-05
SHANDONG NORTH OPTICAL & ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The binocular eyepieces of the vehicle-mounted viewer sharing a single display generally adopt the form of a beam splitter or a beam splitter prism to divide the beam into two beams, the left and the right, for binocular observation. The composition of the optical system is relatively complicated and the production cost is high; During observation, due to the vibration and turbulence of the driving vehicle, the exit pupil of the eyepiece of the instrument may deviate from the position of the observer's eye pupil, or even completely deviate from the eye pupil, so that the monitor image cannot be seen, which will cause certain adverse effects on normal observation. influences

Method used

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  • Single-display-shared large-exit-pupil binocular eyepiece optical system
  • Single-display-shared large-exit-pupil binocular eyepiece optical system
  • Single-display-shared large-exit-pupil binocular eyepiece optical system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take a 5-lens eyepiece optical system suitable for a display screen no larger than 4 inches (aspect ratio of 4:3), focal length = 109.5mm, exit pupil diameter = 8mm, and exit pupil distance = 22mm as an example for specific illustration. The surface number of the diaphragm E is 1, and so on, and the surface number of the display I is 12. The eyepiece design data of the first embodiment are shown in Table 1 below.

[0022] Table 1

[0023] Surface serial number

[0024] The optical length of the optical system is 156mm, and the eyepiece assembly can be fixed on the vehicle body for binocular observation of a display not larger than 4 inches. When using a 4-inch display, the overlapping area of ​​the field of view of the left eye and the right eye is about 1 / 3 of the horizontal field of view; when both eyes are in the binocular observation state of the design diaphragm position, you can see the full field of view of the display. The binocular eye distance range...

Embodiment 2

[0026] Take a 5-lens eyepiece optical system suitable for a display screen no larger than 4 inches (aspect ratio of 4:3), focal length = 109.7mm, exit pupil diameter = 8mm, and exit pupil distance = 22mm as an example for specific illustrations. The surface number of the diaphragm E is 1, and so on, and the surface number of the display I is 12. The eyepiece design data of the second embodiment are shown in Table 2 below.

[0027] Table 2

[0028] Surface serial number

[0029] The optical length of the optical system is 179mm, and the eyepiece assembly can be fixed on the vehicle body for binocular observation of a display not larger than 4 inches. When using a 4-inch display, the overlapping area of ​​the field of view of the left eye and the right eye is about 1 / 3 horizontal field of view; binocular observation state with both eyes at the design aperture position, you can see the full field of view of the display. The binocular eye distance ranges from 56mm to 7...

Embodiment 3

[0031] Take a 4-lens eyepiece optical system suitable for a display screen no larger than 4 inches (aspect ratio of 4:3), focal length = 125mm, exit pupil diameter = 8mm, and exit pupil distance = 22mm as an example to make a specific description. Taking the surface number of the diaphragm E as 1, and so on, the surface number of the display device I is 10, and the eyepiece design data of the third embodiment are shown in Table 3 below.

[0032] table 3

[0033] Surface serial number

[0034] The optical length of the optical system is 176mm. The eyepiece assembly can be fixed on the vehicle body for binocular observation of a display screen no larger than 4 inches. When using a 4-inch display screen, the overlapping area of ​​the field of view of the left and right eyes is 1 / 3 of the horizontal field of view; binocular observation with both eyes at the designed exit pupil position, you can see the full field of view of the display. The binocular distance ranges fro...

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Abstract

The invention belongs to the technical field of optics. Through refraction and transmission of a spherical lens group coaxially arranged, a binocular eye pupil at an exit pupil position divides outgoing light into a left beam and a right beam in a wavefront-splitting manner, and binocular observation for a shared single display image is achieved. The single-display-shared large-exit-pupil binocular eyepiece optical system to which the invention relates is the lens groups arranged between the display and a diaphragm. The lens group is characterized in that the lens group comprises n spherical lenses which are successively and coaxially arranged, and n is a natural number not less than 3; the display is placed on a front focal plane of the lens group, and the center of the display coincides with an optical axis of the lens group; and the lens group comprises 2n optical surfaces which are (2n) and (2n+1) taking a diaphragm surface (1) as a starting point, and a display surface is (2n+2). The binocular eyepiece optical system has the advantages of simple structure, comfortable observation, reliable performance, the large exit pupil diameter and the large exit pupil distance; free observation can be performed in a certain special scope, and an object image is easy to continuously observe; the binocular eyepiece optical system can be fixed to a vehicle body and does not increase a burden of a head, and people cannot feel fatigue easily; and the binocular eyepiece optical system is suitable for a vehicle-mounted binocular observation instrument to continuously observe surrounding scenery conditions or related information.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to an eyepiece optical system, in particular to an eyepiece optical system for binocularly observing display images. Background technique [0002] The vehicle-mounted binocular viewer using small or micro display devices is a new type of product in the field of photoelectric display technology in recent years. It can zoom in and observe the display image on the front focal plane through the eyepiece to understand the surrounding scenery or related information. Its eyepiece assembly consists of binocular eyepieces and a display (LCD or OLED display). [0003] The binocular eyepieces of the vehicle-mounted viewer sharing a single display generally adopt the form of a beam splitter or a beam splitter prism to divide the beam into two beams, the left and the right, for binocular observation. The composition of the optical system is relatively complicated and the production cost is high; ...

Claims

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Application Information

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IPC IPC(8): G02B25/00G02B27/01
CPCG02B25/001G02B27/0081G02B27/0101
Inventor 聂卫东章国宁于利运王国芳马爱荣
Owner SHANDONG NORTH OPTICAL & ELECTRONICS
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