CN201278049Y - Transparent retina imaging apparatus - Google Patents
Transparent retina imaging apparatus Download PDFInfo
- Publication number
- CN201278049Y CN201278049Y CNU2008201868399U CN200820186839U CN201278049Y CN 201278049 Y CN201278049 Y CN 201278049Y CN U2008201868399 U CNU2008201868399 U CN U2008201868399U CN 200820186839 U CN200820186839 U CN 200820186839U CN 201278049 Y CN201278049 Y CN 201278049Y
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- China
- Prior art keywords
- convex lens
- plane
- light modulator
- spatial light
- phase distribution
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- Expired - Fee Related
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Abstract
The utility model discloses a transmission type retina imaging device which comprises a coherent light source, a transmission type spatial light modulator, a first convex lens, a second convex lens and a phase distribution plane, wherein the coherent light source is positioned in front of the incident plane of the transmission type spatial light modulator; the transmission type spatial light modulator is positioned in front of the first convex lens; the emergent surface of the transmission type spatial light modulator is coincided with the front focal plane of the first convex lens; the second convex lens is positioned behind the first convex lens; the front focal plane of the second convex lens is coincided with the rear focal plane of the first convex lens; and the phase distribution plane is positioned behind the second convex lens and is coincided with the rear focal plane of the second convex lens. The utility model simplifies the computational processes of phase distribution functions and achieves the real-time resolution of the phase distribution functions.
Description
Technical field
The utility model relates to a kind of imaging device, especially relates to a kind of transmission-type retinal imaging device.
Background technology
The image direct imaging can be omitted the conventional two-dimensional display screen on retina, realize that virtual reality (virtual reality) shows and augmented reality (augmented reality) shows.The main at present directly technology of imaging on retina that adopts, this technology has proposed to adopt one or more lens combination to realize the convergent-divergent of full phase plane image in order to reduce the human eye iris aperture to diffractive effect as far as possible.But, when the coherent light light field is carried out image zoom on the basis of satisfying lens imaging formula (Newton's formula), the space phase distribution can be modulated simultaneously, therefore when adopting iteration or analytic method to calculate on the full phase spatial light modulator PHASE DISTRIBUTION function, need to consider simultaneously the communication process of relevant light field in one or more lens combination.
The utility model content
The technical problems to be solved in the utility model is to propose a kind of transmission-type retinal imaging device at the deficiencies in the prior art.
A kind of transmission-type retinal imaging device comprises coherent source, transmission-type spatial light modulator, first convex lens, second convex lens and PHASE DISTRIBUTION plane, and wherein coherent source is positioned at the dead ahead of the plane of incidence of transmission-type spatial light modulator; The transmission-type spatial light modulator is positioned at the dead ahead of first convex lens, and the exit facet of transmission-type spatial light modulator overlaps with the front focal plane of first convex lens; Second convex lens are positioned at the dead astern of first convex lens, and the back focal plane of the front focal plane of second convex lens and first convex lens overlaps; The PHASE DISTRIBUTION plane is positioned at the dead astern of second convex lens, and the PHASE DISTRIBUTION plane overlaps with the back focal plane of second convex lens.
The beneficial effects of the utility model are, need not to consider the modulation to the PHASE DISTRIBUTION function in relevant light field communication process of one or more lens combination, have simplified the computation process of PHASE DISTRIBUTION function, realize finding the solution in real time of PHASE DISTRIBUTION function.
Description of drawings
Fig. 1: the utility model one-piece construction figure;
Embodiment
As shown in Figure 1.A kind of transmission-type retinal imaging device comprises coherent source 1, transmission-type spatial light modulator 2, first convex lens 3, second convex lens 4 and PHASE DISTRIBUTION plane 5, and wherein coherent source 1 is positioned at the dead ahead of the plane of incidence of transmission-type spatial light modulator 2; Transmission-type spatial light modulator 2 is positioned at the dead ahead of first convex lens 3, and the exit facet of transmission-type spatial light modulator 2 overlaps with the front focal plane of first convex lens 3; Second convex lens 4 are positioned at the dead astern of first convex lens 3, and the back focal plane of the front focal plane of second convex lens 4 and first convex lens 3 overlaps; PHASE DISTRIBUTION plane 5 is positioned at the dead astern of second convex lens 4, and PHASE DISTRIBUTION plane 5 overlaps with the back focal plane of second convex lens 4.
The plane of incidence of coherent source 1 direct irradiation transmission-type spatial light modulator 2, coherent source 1 can be plane or sphere coherent source, 2 pairs of incident coherent lights of transmission-type spatial light modulator are modulated, transmission-type spatial light modulator 2 adopts the liquid crystal display device of full phase modulation (PM), coherent light is after 2 modulation of transmission-type spatial light modulator, by a telescopic lenses group of forming by first convex lens 3 and second convex lens 4, before the back focal plane of second convex lens 4 was positioned at cornea 6, promptly the PHASE DISTRIBUTION plane 5.When relevant light field is propagated in the telescopic system of first convex lens 3 and second convex lens, 4 compositions, be simple convergent-divergent relation between relevant light field plural number on relevant light field plural number distribution on the front focal plane of first convex lens 3 and the PHASE DISTRIBUTION plane 5 distributes, scaling determines that by the ratio of the focal distance f 2 of the focal distance f 1 of first convex lens 3 and second convex lens 4 promptly scaling is: M=f2/f1.The utility model preferably adopts the image that dwindles, i.e. f2＜f1.Coherent light on the PHASE DISTRIBUTION plane 5 further enters eyeball by cornea 6, and imaging on retina 7.In the time need on a plurality of planes before and after the retina, realizing the Modulation and Amplitude Modulation of relevant light field, can pass through alternative manner, or many planes alternative manner such as analytic method calculates the pure phase position distribution function on the respective phase distribution plane 5, coherent light this moment communication process in the telescopic system of first convex lens 3 and second convex lens, 4 compositions can be ignored, and the pure phase position simple convergent-divergent of distribution function process on the PHASE DISTRIBUTION plane 5 is the phase modulation function on the transmission-type spatial light modulator 2.
Claims (1)
1. transmission-type retinal imaging device, it is characterized in that this retinal imaging device comprises coherent source (1), transmission-type spatial light modulator (2), first convex lens (3), second convex lens (4) and PHASE DISTRIBUTION plane (5), wherein coherent source (1) is positioned at the dead ahead of the plane of incidence of transmission-type spatial light modulator (2); Transmission-type spatial light modulator (2) is positioned at the dead ahead of first convex lens (3), and the exit facet of transmission-type spatial light modulator (2) overlaps with the front focal plane of first convex lens (3); Second convex lens (4) are positioned at the dead astern of first convex lens (3), and the back focal plane of the front focal plane of second convex lens (4) and first convex lens (3) overlaps; PHASE DISTRIBUTION plane (5) is positioned at the dead astern of second convex lens (4), and PHASE DISTRIBUTION plane (5) overlap with the back focal plane of second convex lens (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201868399U CN201278049Y (en) | 2008-10-28 | 2008-10-28 | Transparent retina imaging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201868399U CN201278049Y (en) | 2008-10-28 | 2008-10-28 | Transparent retina imaging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201278049Y true CN201278049Y (en) | 2009-07-22 |
Family
ID=40895634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201868399U Expired - Fee Related CN201278049Y (en) | 2008-10-28 | 2008-10-28 | Transparent retina imaging apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201278049Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380157A (en) * | 2012-05-18 | 2015-02-25 | 瑞尔D股份有限公司 | Directionally illuminated waveguide arrangement |
-
2008
- 2008-10-28 CN CNU2008201868399U patent/CN201278049Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380157A (en) * | 2012-05-18 | 2015-02-25 | 瑞尔D股份有限公司 | Directionally illuminated waveguide arrangement |
| US10048500B2 (en) | 2012-05-18 | 2018-08-14 | Reald Spark, Llc | Directionally illuminated waveguide arrangement |
| CN104380157B (en) * | 2012-05-18 | 2018-12-28 | 瑞尔D斯帕克有限责任公司 | Directional lighting waveguide assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20131028 |