Home Theater and Projectors

CEDIA Expo Preview

This blog provides a preview of new projectors expected to be introduced at the annual “Custom Electronics Design and Installation Association” (CEDIA) Expo that runs from  7 – 10 September in Indianapolis.  This is the trade show where most manufacturers of home theater oriented projectors, screens, high-end audio gear and home automation systems introduce/demo their new and upcoming products for the North American market.  Several of us associated with Projector Reviews will be attending the CEDIA Expo and my next blog will report on what new projectors were being shown and provide impressions from some of the demos.


Screens for 3D Projection – Part 2

This blog is a continuation of my previous blog.  These discussions focus on factors that need to be considered when selecting a projection screen for use in a home theater with a 3D projector.  While many of the screen characteristics equally apply to selecting a screen for regular 2D projection, there are some factors that are either more important when it comes to 3D or apply only for the case of 3D.


More on 3D Glasses and Part 1 on Projection Screens for 3D

For this Blog I am starting off with some additional info related to 3D active shutter glasses then I am begining (i.e., Part 1) a discussion on things to consider when selecting a screen for use with 3D projectors.


3D Active Shutter Glasses – Technical Overview

For this blog I will be discussing 3D active shutter glasses.

As touched upon in earlier blogs, there are basically two general categories of glasses used for viewing 3D video.  The simplest form is “passive” which use left and right lenses that either have a different fixed polarization or pass different portions of the light spectrum (e.g., different colors).  Most consumer 3D TVs and 3D projectors require the use of the more complex “active” shutter 3D glasses and this latter category is the subject of the discussion below.


LCoS 3D Projection Technology – Part 2

D-ILATM Based 3D Projectors

This is the second part of my blog on using LCoS 3D projection technology.  We are currently talking about 3D projection using sequentially alternating right/left images and where viewers must wear active shutter 3D glasses.  For this blog I will focus on the JVC D-ILA approach used for 3D.


LCoS 3D Projection Technology – Part 1

For this blog I will focus on 3D projectors based on Liquid Crystal on Silicon (LCoS) technology for which the viewer must wear 3D active shutter glasses.  As discussed in my previous blog, this type of 3D projector alternates the display of right and left images that are synchronized with the liquid crystal shutter lenses of the viewer’s 3D glasses such that the right eye only sees the stream of images intended for that eye (i.e., the right image stream) and the left eye only sees the left image stream.  LCoS is one projection technology that can be used to create such a 3D projector.


3D Projection Techniques

Over the next several blogs I intend to get into more of the details of the 3D technologies now available for use by the consumer in a home theater.   I specifically plan to cover the following 3D projection technologies and configurations:


3D Video – A Little History

This post is intended to provide a little history for 3D video and to also provide some context for my prior blog on the 3D signal formats that are defined by the HDMI version 1.4a specification and for Blu-ray 3DTM.  I hope that it will also provide some context for future blogs and discussions related to 3D video.

As a little bit history, 3D using the anaglyph technique has been used with television for decades.  This technique requires the viewer to wear eyeglasses using colored lenses (e.g., one red and the other cyan) and this is an inexpensive method to display 3D content with any standard color TV or video projector. 


First Blog – Moving to 3D

Greetings to all existing and future home theater owners that have made the decision to use front projection at the means of achieving the cinema experience in their own home.  For my first blog, as well as the next several here at Projector Reviews, I have decided to focus a little on the history and more on the technology for bringing 3D into the consumer home theater environment.  Pete Connolly’s “The Art of Gaming” blog will cover 3D gaming while my focus will be on 3D for viewing movies and video programming.



Greetings all:


My name is Ron Jones and I am very pleased to have been invited by Art to contribute to Projector Reviews with a new blog focused on home theater video technology with an emphasis on new technologies, such as 3D, and associated issues/considerations.  My background is as an Electrical Engineer (MSEE) with 30+ years professional experience and as a home theater owner/enthusiast for 35+ years.