Michael J Holtz
Architects at Heidelberg Dr, Boulder, CO

License number
Colorado 302076
Issued Date
Aug 15, 1980
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Architect
Address
Address
3355 Heidelberg Dr, Boulder, CO 80305

Professional information

Michael Holtz Photo 1

Mini-Optical Light Shelf Daylighting System

US Patent:
6480336, Nov 12, 2002
Filed:
Feb 2, 2001
Appl. No.:
09/776319
Inventors:
Neall Edward Digert - Carlsbad CA
Michael Joseph Holtz - Boulder CO
Assignee:
Architectural Energy Corporation - Boulder CO
International Classification:
G02B 1700
US Classification:
359596, 359597, 160104
Abstract:
The mini-optical light shelf daylighting system is implemented in the paradigm of a window treatment that is applicable to both new installations as well as existing window glazing. In particular, the mini-optical light shelf is a passive, static optical device which receives incident daylight transmitted through a window and efficiently redirects it uniformly onto the interior ceiling surface in a diffuse manner, thereby creating a useful source of interior illumination. The mini-optical light shelf comprises multiple shelves, each of which contains an identical optically shaped top surface to allow light to be efficiently collected and accurately directed onto the ceiling surface. The optical shelves are narrow and can be implemented in the paradigm of a window treatment. The window area is partitioned into a view related glazing section and a daylight collection and redirection glazing area. The occupants views out of the building remain unobstructed through the view related area of the glazing to a height of approximately seven feet.


Michael Holtz Photo 2

Mini-Optical Light Shelf Daylighting System

US Patent:
6714352, Mar 30, 2004
Filed:
Nov 11, 2002
Appl. No.:
10/293689
Inventors:
Zach L. Rogers - Layfayette CO
Michael J. Holtz - Boulder CO
Caroline M. Clevenger - Boulder CO
Neall E Digert - Westminster CO
Assignee:
Architectural Energy Corporation - Boulder CO
International Classification:
G02B 1700
US Classification:
359596, 359597, 160104
Abstract:
Each light slat of the Mini-Optical Light Shelf daylighting system consists of a light reflecting segment that comprises the top surface of the light slat. A light shading segment and a light redirecting segment comprise the bottom surface of the light slat. The daylight incident on the daylight collection section of the glazing is collected by the optically shaped light reflecting segment of the light slats and redirected onto the ceiling plane of the room in a glare free, uniform manner. In addition, the light redirecting segment of each light slat functions to redirect incident daylight, that is reflected off the light reflecting segment of the adjacent light slat at angles above a predetermined threshold, onto the ceiling plane of the room. The light shading segment functions to block low altitude components of incident daylight from entering the room.


Michael Holtz Photo 3

Automated Diagnostic System Having Temporally Coordinated Wireless Sensors

US Patent:
5481481, Jan 2, 1996
Filed:
Nov 23, 1992
Appl. No.:
7/979825
Inventors:
Donald J. Frey - Boulder CO
Michael J. Holtz - Boulder CO
Assignee:
Architectural Engergy Corporation - Boulder CO
International Classification:
G01F 156
US Classification:
36455101
Abstract:
The diagnostic system makes use of a knowledge based controller and a plurality of data logger units, at least one of which is a wireless unit, to collect temporally coordinated data indicative of the real time operation of a system under test that comprises a plurality of spatially disjunct but operationally interdependent components. The diagnostic system controller automatically architects an instrumentation plan to collect the data and calculates performance factors from this collected data. A comparison of the calculated performance factors with optimum and typical failure mode performance factors identifies performance problems in the system under test.