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Three-dimensional real time super-resolution digital holography recording system

A recording system and digital holography technology, applied in microscopes, optics, instruments, etc., can solve the problems of not having high time and high spatial resolution at the same time, achieve spatial and time resolution, achieve common improvement, and large field of view and depth of field effects

Inactive Publication Date: 2012-04-04
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented device allows for precise control over how many layers of data from various angles fall onto top of another layer during photography by adjusting certain parameters such as timing delays and intensity levels. These techniques help create 3D images faster because they involve exposure to both strong and weak lights instead of just single brightness values like red/green colors. Additionally, this technique also prevents any unwanted signals from being mixed up into specific areas within the scene's area behind them. Overall, these technical improvements improve the quality of 3D cameras while reducing their size and cost.

Problems solved by technology

This patented technical problem addressed in this patents relates to achieving both space resolution and depth of observation capabilities simultaneously during an entirety of digital photography. Current methods require expensive equipment like scanning electronics, resulting in slow down times due to their low speeds. Additionally, current techniques are limited because they cannot capture fine details accurately even if there were small changes made within them over multiple frames.

Method used

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  • Three-dimensional real time super-resolution digital holography recording system

Examples

Experimental program
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Embodiment 1

[0027] Embodiment 1: as figure 1 , 2 As shown, the three-dimensional real-time super-resolution digital holographic recording system includes two parts: an incident light generation system and a recording system. The incident light generation part includes a femtosecond pulse laser 1, a frequency doubling crystal 2 that changes the wavelength of the incident laser pulse, a dichroic mirror 3 that can separate two different wavelength laser pulses from the frequency doubling crystal 2 and has an output time difference, and a mirror 4 , 5, and a non-polarizing beam splitter 6; the recording system includes a polarization beam splitter that decomposes each incident laser pulse entering the system (from the non-polarizing beam splitter 6) into linearly polarized beams in the horizontal X direction and vertical Y direction The mirror 7 is located between the polarizing beam splitter 7 and the reflector 9, and the non-polarizing beam splitter 8 that decomposes the polarized light fr...

Embodiment 2

[0058] Embodiment 2: as figure 1 , 2 As shown, the three-dimensional real-time super-resolution digital holographic recording system is the same as that in Embodiment 1. The laser 1 used is an ORANGE-type ytterbium-doped fiber oscillator with an output laser pulse center wavelength of 1030nm and a pulse time interval of less than 100fs. The frequency doubling crystal 2 can double the frequency of the original input pulse laser, that is, the laser wavelength passing through it KTP potassium titanyl phosphate that has become 1 / 2 times the original wavelength (size: 2 mm×5 mm×5 mm, the crystal response wavelength range is 350-4500nm, and the frequency doubling efficiency is about 70%). The generated laser pulse optical delay system is realized by a dichroic mirror 3, two reflective mirrors 4, 5 placed symmetrically on the reflective surface, and a non-polarizing beam splitter 6. The dichroic mirror has dichroic The spectroscopic plate has high reflectivity for light with a wave...

Embodiment 3

[0059] Embodiment 3: as figure 1 , 2 As shown, the three-dimensional real-time super-resolution digital holographic recording system is the same as that in Embodiment 1. The laser 1 used is a Clarke-MXR CPA2010 femtosecond laser oscillator with an output laser pulse center wavelength of 775nm and a pulse time interval of less than 150fs. The frequency doubling crystal 2 can generate another wavelength while passing through the 775nm high-frequency laser pulse. LBO lithium triborate crystal (dimension: 5mm×3mm×8mm, crystal response wavelength range is 160-2600nm, frequency doubling efficiency is about 30%) with low-frequency laser pulse at 387nm; the optical delay of the generated laser pulse is composed of a The dichroic mirror 3, a roof prism and a non-polarizing beam splitter 6 realize that the dichroic mirror is a dichroic beam splitter, which has a high reflectivity to the light of 387nm wavelength and has a high reflectivity to the light of 775nm. The higher transmittan...

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Abstract

The invention relates to a three-dimensional real time super-resolution digital holography recording system, which belongs to the field of three-dimensional microscopic imaging technology and comprises an incident light generation system and a recording system. The incident light generation system comprises a femtosecond pulse laser, a frequency doubling crystal, a dichroscope, an optical path delay system and an unpolarized beam splitter. Said recording system comprises a microobjective and a series of polarized beam splitter and unpolarized beam splitter, a reflector, a digital camera and a computer holography image processing and reproducing system. With the technologies of wavelength division, angle division, time division and polarization division multiplexing and with the optical frequency doubling crystal, the lasers sent from the laser device can be divided into two lasers with different wavelengths to enter the recording system; then a digital holography record for the three-dimensional real time super-resolution imaging can be realized in one frame image of Charge Coupled Device (CCD) through a series of beam splitting, high resolution, large view field and large depth of field. The invention has the advantages of simple system and more information records, which can simultaneously improve the space resolution and time resolution and can be widely applied to the three-dimensional real time high-resolution imaging for the microscopic object.

Description

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Claims

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Application Information

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Owner KUNMING UNIV OF SCI & TECH
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