Abstract

A novel compact optical engine for a micro projector display is experimentally demonstrated, which is composed of RGB light sources, a tapered 3 × 1 Fiber Optic Color Synthesizer (FOCS) along with a fiberized ball-lens, and a two dimensional micro electromechanical scanning mirror. In the proposed optical engine, we successfully employed an all-fiber beam shaping technique combining optical fiber taper and fiberized ball lens that can render a narrow beam and enhance the resolution of the screened image in the far field. Optical performances of the proposed device assembly are investigated in terms of power loss, collimating strength of the collimator assembly, and color gamut of the output.

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References

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  1. D. Armitage, I. Underwood, and S. Wu, Introduction to Microdisplays (John Wiley & Sons Ltd, West Sussex, 2006), Chap. 8.
  2. A. K. Bhowmik, Z. Li, and P. J. Bos, Mobile displays: technology and applications (John Wiley & Sons Ltd, West Sussex, 2008), Chap. 21.
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  15. “0.39 NA TEQS™ Clad Multimode Fiber FT Silica/TEQS™Multimode Fibers” (Thorlabs Inc.). www.thorlabs.com
  16. R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
    [CrossRef]
  17. A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
    [CrossRef]

2009 (1)

J. Rolland and O. Cakmakci, “Head –worn display: The Future through new eyes,” Opt. Photon. News 20(4), 20–27 (2009).
[CrossRef]

2008 (1)

2006 (2)

2004 (1)

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

2001 (1)

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

1999 (1)

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

1992 (1)

T. A. Birks and Y. W. Li, “The shape of fiber tapers,” J. Lightwave Technol. 10(4), 432–438 (1992).
[CrossRef]

1987 (1)

I. Yokohama, J. Noda, and K. Okamoto, “Fiber-coupler fabrication with automatic fusion- elongation process for low excess loss and high coupling - ratio accuracy,” J. Lightwave Technol. 5(7), 910–915 (1987).
[CrossRef]

1985 (2)

Birks, T. A.

T. A. Birks and Y. W. Li, “The shape of fiber tapers,” J. Lightwave Technol. 10(4), 432–438 (1992).
[CrossRef]

Cakmakci, O.

J. Rolland and O. Cakmakci, “Head –worn display: The Future through new eyes,” Opt. Photon. News 20(4), 20–27 (2009).
[CrossRef]

Durr, P.

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

George, J.

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

Jeong, Y.

Kapoor, R.

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

Kim, H. R.

Kim, J. K.

Korth, H.

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

Kuck, H.

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

Kunze, D.

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

Kuo, J. N.

Lakner, H.

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

Lee, D.

Lee, G. B.

Lee, J. W.

Li, Y. F.

Li, Y. W.

T. A. Birks and Y. W. Li, “The shape of fiber tapers,” J. Lightwave Technol. 10(4), 432–438 (1992).
[CrossRef]

Lit, J. W.. Y.

Lit, J. W.Y.

Mukhopadhyay, P. K.

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

Noda, J.

I. Yokohama, J. Noda, and K. Okamoto, “Fiber-coupler fabrication with automatic fusion- elongation process for low excess loss and high coupling - ratio accuracy,” J. Lightwave Technol. 5(7), 910–915 (1987).
[CrossRef]

Oh, K.

Okamoto, K.

I. Yokohama, J. Noda, and K. Okamoto, “Fiber-coupler fabrication with automatic fusion- elongation process for low excess loss and high coupling - ratio accuracy,” J. Lightwave Technol. 5(7), 910–915 (1987).
[CrossRef]

Rolland, J.

J. Rolland and O. Cakmakci, “Head –worn display: The Future through new eyes,” Opt. Photon. News 20(4), 20–27 (2009).
[CrossRef]

Schenk, H.

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

Sharma, S. K.

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

Tünnermann, A.

Wolter, A.

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

Wu, H. W.

Yokohama, I.

I. Yokohama, J. Noda, and K. Okamoto, “Fiber-coupler fabrication with automatic fusion- elongation process for low excess loss and high coupling - ratio accuracy,” J. Lightwave Technol. 5(7), 910–915 (1987).
[CrossRef]

J. Lightwave Technol. (2)

T. A. Birks and Y. W. Li, “The shape of fiber tapers,” J. Lightwave Technol. 10(4), 432–438 (1992).
[CrossRef]

I. Yokohama, J. Noda, and K. Okamoto, “Fiber-coupler fabrication with automatic fusion- elongation process for low excess loss and high coupling - ratio accuracy,” J. Lightwave Technol. 5(7), 910–915 (1987).
[CrossRef]

J. Opt. Soc. Am. A (2)

Opt. Express (2)

Opt. Lett. (1)

Opt. Photon. News (1)

J. Rolland and O. Cakmakci, “Head –worn display: The Future through new eyes,” Opt. Photon. News 20(4), 20–27 (2009).
[CrossRef]

Pramana J. Phys. (1)

R. Kapoor, P. K. Mukhopadhyay, J. George, and S. K. Sharma, “An alternative approach to determine the spot-size of a multi-mode laser beam and its application to diode laser beams,” Pramana J. Phys. 53(2), 307–319 (1999).
[CrossRef]

Proc. SPIE (1)

A. Wolter, H. Schenk, H. Korth, and H. Lakner, “Torsional stress, fatigue and fracture strength in silicon hinges of a micro scanning mirror,” Proc. SPIE 5343, 176–185 (2004).
[CrossRef]

Sens. Actuators (1)

H. Schenk, P. Durr, D. Kunze, H. Lakner, and H. Kuck, “A resonantly excited 2D -micro-scanning-mirror with large deflection,” Sens. Actuators 89(1-2), 104–111 (2001).
[CrossRef]

Other (6)

D. Armitage, I. Underwood, and S. Wu, Introduction to Microdisplays (John Wiley & Sons Ltd, West Sussex, 2006), Chap. 10.

“Pico projector displays: Embedded”, (Microvision, 2008). http://www.microvision.com/pico_projector_displays/embedded.html .

D. Armitage, I. Underwood, and S. Wu, Introduction to Microdisplays (John Wiley & Sons Ltd, West Sussex, 2006), Chap. 8.

A. K. Bhowmik, Z. Li, and P. J. Bos, Mobile displays: technology and applications (John Wiley & Sons Ltd, West Sussex, 2008), Chap. 21.

Zhou, “Single Clad and Dual Clad Optical Fibers for Laser Power Delivery” (Polymicro Technologies). www.polymicro.com

“0.39 NA TEQS™ Clad Multimode Fiber FT Silica/TEQS™Multimode Fibers” (Thorlabs Inc.). www.thorlabs.com

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Figures (9)

Fig. 1
Fig. 1

Schematic diagram of proposed fiber optic micro projection display. Note that the cladding of HPCF is removed in the tapering process and the diameter of the silica core is reduced.

Fig. 2
Fig. 2

(a) Ray tracing simulation of the fabricated taper tip using LightTools®. The wavelength of incident beam was set at 550nm. (b) Ray tracing simulation for the all fiber collimator

Fig. 3
Fig. 3

(a) Intensity distribution of the propagated beam at: (a) The position of the hemispherical lens, (b) 300μm from the center of the ball lens.

Fig. 4
Fig. 4

The branch type 3×1 FOCS with tapered output.

Fig. 5
Fig. 5

(a) Microphotograph of the lens conical tip of FOCS output. (b) Microphotograph of the 500μm ball lens made of bare HPCF .

Fig. 6
Fig. 6

Intensity distribution of the red LED beam launched by an untapered (solid line) and a tapered (dash line) collimating assemblies at: (a) 5mm from the 500μm fiberized ball lens, (b) 50mm from the 10mm ball lens.

Fig. 7
Fig. 7

CIE 1931 diagram of the proposed LED-based SMP, laser-based SMP and three conventional displays of CRT, NTSC, and TFT-LCD.

Fig. 8
Fig. 8

Lissajous patterns rendered by the RGB Lasers at 100cm from the MEMS mirror.

Fig. 9
Fig. 9

Linear patterns rendered by RGB LEDs at 20cm from the MEMS mirror.

Tables (2)

Tables Icon

Table 1 Throughput power and its deviation for light sources in the output port of FOCS.

Tables Icon

Table 2 Spot size and collimating strength (CS) for two different collimators for laser sources.

Metrics