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Lepton 1.5
FLIR Lepton 1.5 User Manual
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FLIR
LEPTON® Engineering
Data
sheet
The inf
ormat
ion co
ntain
ed her
ein do
es not c
ontain
tech
nology as
def
ined b
y the E
AR, 15
CFR 77
2, is
public
ly ava
ilable,
and th
erefor
e, n
ot subj
ect to E
AR.
NSR (
6/14
/2018)
.
Inform
ation
on
this page
is
subject
to
change wit
hout not
ice.
Lepton Enginee
ring Da
tasheet, D
ocume
nt Number
: 500-0659-
00
-09
R
ev: 203
7
2.0
500
-0659-41.pdf
2.5
500
-0763-
41
.pdf
3.0
500
-0726-41.pdf
3.
5
500
-0771-41.pdf
6
8
Table of Contents
Default Chapter
2
Table of Contents
2
1 Introduction
6
Revision History
6
Contact Us
6
References
6
Device Overview
8
Figure 1. Lepton with Shutter Camera (with and Without Socket)
8
Key Specifications
9
System Architecture
11
Figure 2 - Lepton Architecture
11
2 Functional Description
12
Fpa Interface Module
12
System Control (Sys Ctrl) Module
12
Figure 3 - Lepton Detailed Block Diagram
12
Power Management Module
13
Software-Based Video Processing (SVP Core) Module
13
Memory System (Memory Sys) Module
13
General Purpose Processor (Gpp)
13
Video Interface Module (Video If)
13
One-Time Programmable Memory (OTP)
13
Static Random-Access Memory (SRAM)
13
Gpio Interface Module (Gpio If)
14
Video Pipeline
14
Nuc
14
Defect Replacement
14
Spatial / Temporal Filtering
14
Figure 4 - Lepton Video Pipeline Block Diagram
14
Agc
15
Colorize
15
Master Clock
15
3 Operating States and Modes
15
Power States
15
Figure 5 - State Diagram Showing Transitions Among the Five Power States
16
Ffc States
18
Figure 6 - Lepton Power Sequencing
18
Figure 7 - Examples of Good Uniformity, Graininess, and Blotchiness
19
Figure 8 - FFC States
21
Gain States
22
Figure 9 - Relative Spatial Noise after FFC Vs. Number of Integrated Frames ((Defaults Is 8)
22
Telemetry Modes
23
Radiometry Modes
29
Radiometry Enabled - Tlinear
30
Radiometry Enabled - Flux Linear
30
Radiometry Disabled
31
Figure 10 - Hypothetical Illustration of Camera Output in Counts Vs. Camera Temperature in Radiometry-Enabled Mode
31
Radiometric Accuracy - Module
32
Radiometric Accuracy - System Considerations
32
Figure 11 - Hypothetical Illustration of Camera Output Vs. Camera Temperature in Radiometry-Disabled Mode
32
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
33
Agc Modes
34
Figure 12 - Illustration of a Histogram for a 3X3 Pixel Area
35
Video Output Format Modes
36
Figure 13 - Comparison of Linear AGC and Classic/Lepton Variant of Histogram Equalization
36
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
37
Figure 14 - Built-In Color Palette
38
Gpio Modes
39
Figure 15 - Comparison of an Identical Image with Grayscale and a False-Color Palette
39
4 Interface Descriptions
40
Command and Control Interface
40
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
41
User Defaults Feature
42
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
43
Ospi Channel
44
Vospi Physical Interface
45
Figure 16 - Vospi Flexible Clock Rate
45
Figure 17 - Vospi I/O
45
Vospi Protocol - Lepton 1.5, 1.6, 2.0 and 2.5
46
Figure 18 - SPI Mode 3 (CPOL=1, CPHA=1)
46
Figure 19 - SPI Bit Order (Transmission of 0X8C08)
46
Figure 20 - Generic Vospi Packet
47
Figure 21 - Video Packet
48
Figure 22 - Discard Packet
48
Figure 23 - Raw14 Mode: 1 Video Line Per 160-Byte Payload
49
Figure 24 - RGB888 Mode: 1 Video Line Per 240-Byte Payload
49
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
50
Figure 25 - Frame Counter for Successive 80X60 Frames
51
Figure 26 - Valid Frame Timing (no Loss of Synchronization)
52
Figure 27 -Clock too Slow - Failure to Read an Entire Frame Within the Frame Period
53
Figure 28 - Intra-Frame Delay too Long - Failure to Read out an Entire Frame before the Next Is Available
53
Figure 29 - Failure to Read out an Available Frame
53
Vospi Protocol - Lepton 3.0 and 3.5
54
Figure 30 - Generic Vospi Packet
55
Figure 31 - Segment and Packet Relationship to the 160X120 Video Image
55
Figure 32 - Packet Header Encoding and an Example
56
Figure 33 - Discard Packet
57
Figure 34 - Raw14 Mode: 1 Video Line Per 160-Byte Payload
58
Figure 35 - RGB888 Mode: 1 Video Line Per 240-Byte Payload
58
Figure 36 - Location of Telemetry Lines
58
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
59
Figure 37 - Frame Counter for Successive Frames
60
Figure 38 - Valid Frame Timing (no Loss of Synchronization)
61
Figure 39 - Clock too Slow - Failure to Read an Entire Frame Within the Frame Period
61
Figure 40 - Intraframe Delay too Long - Failure to Read out an Entire Frame before the Next Is Available
62
Figure 41 - Failure to Read out an Available Frame
62
Vospi Protocol - Lepton 2 Vs. Lepton 3
62
5 Thermal Camera Basics
63
Figure 42 - Illustration of Lepton Detector Time Constant
64
6 Mounting Specifications
65
Figure 43 - Lepton with Radiometry Camera Mounting Dimensions
65
Socket Information
66
Figure 44 - Two Commercially-Available Sockets (both from Molex) Compatible with Lepton
66
Figure 45 - both Sockets Mounted on a PCB
67
Mechanical Considerations
68
Figure 46 - Recommended Approach to Retaining Lepton in the End Application
68
Thermal Considerations
69
Optical Considerations
69
7 Image Characteristics
69
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
70
8 Spectral Response
71
Figure 47 - Normalized Response as a Function of Signal Wavelength for Lepton 1.5, 2.0 and 2.5
71
Figure 48 - Normalized Response as a Function of Signal Wavelength for Lepton 3.0 and 3.5
72
9 Electrical Specifications
73
Lepton Pin-Out
73
Figure 49 - Pinout Diagram (Viewed from Bottom of Camera Module)
73
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
74
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
75
DC and Logic Level Specifications
76
Ac Electrical Characteristics
77
Absolute Maximum Ratings
78
Electronic Integration Considerations
78
Figure 50. Example of Lepton Schematic
78
10 Environmental Specifications
79
Compliance with Environmental Directives
80
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
81
11 Abbreviations and Acronyms
82
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
83
The Information Contained Herein Does Not Contain Technology as Defined by the EAR, 15 CFR 772, Is Publicly Available
84
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FLIR Lepton 1.5 Specifications
General
Brand
FLIR
Model
Lepton 1.5
Category
Control Unit
Language
English
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