Pulse-originated human figurative imagery transferred into dichromate gelatin DCG reflection holograms

Fred D. Unterseher; August Muth; Rebecca E. Deem

doi:10.1117/12.342809

23 March 1999 Pulse-originated human figurative imagery transferred into dichromate gelatin DCG reflection holograms

Fred D. Unterseher, August Muth, Rebecca E. Deem

Proceedings Volume 3638, Holographic Materials V; (1999) https://doi.org/10.1117/12.342809
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

The authors discuss the transfer of human figurative imagery originated with a pulsed ruby laser into dichromate gelatin (DCG) emulsion. Human figurative imagery (live subject matter) has been recorded holographically with pulse laser systems, most commonly with pulsed ruby and frequency doubled Yag lasers using silver halide emulsion due to the short end reciprocity failure of other recording materials. Since the DCG reflection transfer is exposed at 488 nm and the silver transmission master recording is at 694 nm, two of the major considerations for transfers is frequency shift and image size in the DCG hologram. As a display medium, DCG holography is conventionally produced in small format recordings. The authors discuss methods for reducing the imagery optically to better accommodate a small-scale hologram. A reduced image, where the projected image is compressed can work within the constraints of a broad-banded DCG reflection hologram (white/pink coloration), whose limitation of depth, about 2.5 to 3' or 5 to 8 cm has made recording of one to one scale human figurative imagery prohibitive. DCG reflection holograms, volumetric holograms, tend to exhibit a short depth of field and the more broad banded (white in coloration) the more severe the chromatic aberrations in the z-axis. The reduction methods offer image compression in particular with the lens system between H1 and H2, in which case the image from H1 is compressed in the X and Y axis and most importantly in the Z axis. The longitudinal (z-axis) reduction shrinkage is square to that of the transverse reduction. The authors consider the visual appeal and increased efficiency in the final transfer DCG hologram to be well worth the effort. A practical approach is emphasized.

Citation Download Citation

Fred D. Unterseher, August Muth, and Rebecca E. Deem "Pulse-originated human figurative imagery transferred into dichromate gelatin DCG reflection holograms", Proc. SPIE 3638, Holographic Materials V, (23 March 1999); https://doi.org/10.1117/12.342809

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Holograms

Image compression

Reflection

Holographic interferometry

Silver

Beam splitters

Ruby lasers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years