CN201116946Y - Ocular glass and near eye display system - Google Patents
Ocular glass and near eye display system Download PDFInfo
- Publication number
- CN201116946Y CN201116946Y CNU2007202012992U CN200720201299U CN201116946Y CN 201116946 Y CN201116946 Y CN 201116946Y CN U2007202012992 U CNU2007202012992 U CN U2007202012992U CN 200720201299 U CN200720201299 U CN 200720201299U CN 201116946 Y CN201116946 Y CN 201116946Y
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- CN
- China
- Prior art keywords
- lens
- display system
- eyepiece
- eye display
- eye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides an eye lens and a close eye display system which adopts the eye lens, wherein the eye lens has light weight and is beneficial for manufacturing an aspheric surface shape. The eye lens comprises an eyeglass group, wherein the lens group comprises a lens group and a field lens, the lens group at least comprises a diffraction surface, and the eyeglass group is made of plastic material. The eye lens of the utility model is made of the plastic material and is convenient for being manufactured into the aspheric surface shape, the structure of an optical system is simplified, the cost is lowered, and the eye lens has the characteristics of light weight and high production efficiency. The close eye display system which is manufactured through adopting the eye lens of the utility model also has the characteristics of light weight, low cost and simple optical system.
Description
Technical field
The utility model relates to a kind of optical instrument, particularly relates to a kind of eyepiece and adopts the near-eye display system of this eyepiece.
Background technology
Nearly eye demonstration claims the helmet to show again, is a kind of mode of utilizing optical lens to realize the virtual demonstration of large-screen image.Near-eye display system generally comprises light source, illuminator, light valve and eyepiece etc.The principle of work of near-eye display system is: the light that light source sends projects on the light valve through after converging processing such as amplification, through the modulation of light valve, forms virtual image by eyepiece.
The eyepiece of existing near-eye display system uses glass material to make mostly, and glass material is difficult for making aspheric surface, and the design complexity of spherical glass eyepiece, the number of lens is many, and the production difficulty is big, the cost height.
The utility model content
Technical problem to be solved in the utility model provides a kind of eyepiece and adopts the near-eye display system of this eyepiece, and this eyepiece is in light weight, helps making aspheric surface.
The technical scheme that the utility model technical solution problem is adopted is: eyepiece, comprise lens set, and described lens set comprises lens combination and field lens, comprises a diffraction surfaces in the described lens combination at least, described lens set adopts plastic material to make.
The beneficial effects of the utility model are: eyepiece of the present utility model adopts plastic material to make, and conveniently makes aspheric surface, has simplified the structure of optical system, has reduced cost, has characteristics in light weight, that production efficiency is high.The near-eye display system that adopts eyepiece of the present utility model to make also has in light weight, the low and optical system characteristic of simple of cost.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model.
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
Fig. 3 is the structural representation of embodiment 3 of the present utility model.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples.
The lens set of eyepiece of the present utility model adopts plastic material to make very convenient like this making aspheric surface.
Above-mentioned lens set has two, comprises lens combination 1 and field lens 2, comprises a diffraction surfaces in the described lens combination 1 at least, and wherein, the effect of field lens 2 is to strengthen the visual field.
Has an aspheric surface at least in above-mentioned two lens set.
Above-mentioned lens set is made by one or both materials, can adopt PMMA, PC or other optical materials.
The near-eye display system that adopts above-mentioned eyepiece to make comprises eyepiece, illuminator and micro display chip 4.Because the eyepiece that has adopted plastic material to make, therefore, near-eye display system of the present utility model has also had in light weight, the low and optical system characteristic of simple of cost.
Embodiment 1:
As shown in Figure 1, be a kind of reflective near-eye display system, light source 8 is imaged onto on the reflective micro display chip 4 through reflector 5, catoptron 6 and field lens 2, and micro display chip 4 is evenly illuminated, light enters into the pupil 7 of human eye again from micro display chip 4 outgoing through field lens 2, lens combination 1.Consider the minute movement the when individual difference of different crowd eyes and eyes are observed, the emergent pupil design of system wants big; Consider the needs that band eyes personage observes, eyepiece is that the distance of exit pupil of system is also wanted greatly to the distance of human eye pupil; In order to guarantee that the virtual image that near-eye display system shows has the preferable image quality, eyepiece need be corrected aberrations such as spherical aberration, coma, aberration, the curvature of field, distortion, astigmatism.
Embodiment 2:
As shown in Figure 2, micro display chip 4 adopts the micro display chip of transmission-type, and illuminator adopts the backlight illumination.
Embodiment 3:
As shown in Figure 3, micro display chip 4 adopts the autoluminescence chip, no longer needs other illuminator.
Claims (8)
1. eyepiece comprises lens set, it is characterized in that: described lens set comprises lens combination (1) and field lens (2), comprises a diffraction surfaces in the described lens combination (1) at least, and described lens set adopts plastic material to make.
2. eyepiece as claimed in claim 1 is characterized in that: have an aspheric surface in the described lens set at least.
3. eyepiece as claimed in claim 1 is characterized in that: described lens set is made by one or both materials.
4. near-eye display system, comprise eyepiece, illuminator and micro display chip (4), it is characterized in that: described eyepiece comprises lens set, described lens set comprises lens combination (1) and field lens (2), at least comprise a diffraction surfaces in the described lens combination (1), described lens set adopts plastic material to make.
5. near-eye display system as claimed in claim 4 is characterized in that: have an aspheric surface in the described lens set at least.
6. near-eye display system as claimed in claim 4 is characterized in that: described illuminator comprises light source (8), reflector (5) and catoptron (6).
7. near-eye display system as claimed in claim 4 is characterized in that: described micro display chip (4) is a transmission-type, and described illuminator adopts backlight.
8. near-eye display system as claimed in claim 4 is characterized in that: described illuminator and micro display chip (4) adopt the autoluminescence chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202012992U CN201116946Y (en) | 2007-11-08 | 2007-11-08 | Ocular glass and near eye display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202012992U CN201116946Y (en) | 2007-11-08 | 2007-11-08 | Ocular glass and near eye display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201116946Y true CN201116946Y (en) | 2008-09-17 |
Family
ID=39991522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202012992U Expired - Lifetime CN201116946Y (en) | 2007-11-08 | 2007-11-08 | Ocular glass and near eye display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201116946Y (en) |
-
2007
- 2007-11-08 CN CNU2007202012992U patent/CN201116946Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080917 |