Inventor

JOHNSON BRUCE K

US112 patents

⚠️ This page may combine multiple inventors who share the name “JOHNSON BRUCE K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOHNSON BRUCE K

POLAROID CORP

Method of and apparatus for detecting range using multiple range readings

Photographic exposure control system and method

Light-emitting diode having uniform irradiance distribution

Compact folding camera construction

Optical viewing system

Shutter latch arrangement releasable through shutter blade actuation and resettable through film advancement

Range synchronized flash photographic apparatus and method for achieving optimum flash exposure

Proportional fill flash

Sonar controlled lens focus apparatus

Battery assembly

Method and apparatus for controlling exposure by selective use of blocking visible filter

Folding photographic camera or similar article

Folded photographic camera or similar article

Camera having tiltable photocell lens assembly

Copy accessory for instant camera

Camera having chamber for storing exposed film units during their development

Photosensor arrangement for encoding lens and shutter blade position

Method and apparatus using weighted range signal for controlling photographic functions

Light detecting apparatus for photographic camera

Method of camera manufacture and camera apparatus

Dual actuator switches for flash and exposure modes

Apparatus for automatically selecting a preselected focal position for a lens system

Camera with folding flash unit

Walking beam latch and lens disc actuator arrangement

Shutter and trim apparatus

Fixed focus exposure control apparatus with reverse spherical aberration corrective characteristic

Sonar controlled two focal position lens system

Compact prism camera

Scanning shutter blade arrangement with ambient and flash ranges

Fixed time delay quench strobe

Hybrid exposure control system employing dual maximum blade displacement

Photographic camera having external power supply

Compact reflex box camera

Electronic camera employing reflective flat panel display for viewing and printing images

Optical system for use in a photographic printer

Photographic apparatus with sequencing system

Unicell photometer device

Focusing screen

Modular constructed sequencing system for photographic apparatus

Means and method for calibrating light responsive exposure control system

Optical system for transmitting a graphical image

Camera with auto ranging focusing and flash fire control

Modular photographic system assembly

Modular photographic system

System for printing with programmable spatial light modulator and method

Foldable camera accessory for photographing electro-luminescent images

Multiple format camera and accessory

6-bar erecting system

Digital imaging device

BOA TECH INC

Reel based closure system